Regions Of Mexico Research Articles

Activity patterns and use of artificial water ponds by White-tailed deer (Odocoileus virginianus) in western Campeche

Artificial Water Ponds (AWP) are widely employed for preserving and managing white-tailed deer (Odocoileus virginianus) in arid, and tropical regions of Mexico. However, there is a significant knowledge gap concerning the impact of these AWP on white-tailed deer activity. To determine the effect of AWP on the ecological aspects of white-tailed deer, we assessed the visitation rates and activity patterns of this species in AWP and compared them with areas devoid of water such as Dirt Roads (DR) using camera traps during the dry season within the seasonal wetland region of Nicte Ha, situated in western Campeche, Mexico. The research was conducted in a highly seasonal tropical wetland area at the Nicte-Ha UMA in southwestern Campeche, México. We established set camera trap stations during the dry season of 2019, 2020, and 2021 in seven AWP and 12 DR that operated for at least 80 days and compared the white-tailed deer visitation rate (measured as the Relative Abundance Index, RAI) and activity patterns among both treatments and across the three studied years. We collected a total of 3,640 independent records of white-tailed deer (2,584 in AWP and 1,056 in DR) for three years, with a combined effort of 3,978 camera days (1,306 camera days in AWP and 2,672 in DR). Our analysis revealed that the Relative Abundance Index (RAI) was consistently higher in the AWP than the DR across the three study years. However, we examined RAI variations over the three years and observed differences in the AWP, while the DR exhibited a relatively stable pattern. In the case of the activity patterns, we observed that white-tailed deer were primarily diurnal, with a significant overlap in activity between the two treatment areas. Nonetheless, within the AWP, the species exhibited continuous daytime activity, whereas, in the PR, distinct activity peaks occurred during sunrise and sunset. The results show that the presence of AWP in Nicte Ha has important effects on the presence of white-tailed deer during the dry season since we observed that there is a higher RAI in the sites where there is AWP compared to the PR sites. In the case of activity patterns, the AWP sites maintain constant activity throughout the day compared to DR, where activity peaks associated with sunrise and sunset occur. Our results show the importance that this type of structure has for the management of the species during the dry season of the year in Nicte Ha and the potential benefits of these structures in tropical seasonal areas, especially under a scenario in which drought during the dry season may be more severe in the near future due to the global change.

Cosmopolitics and Environmental History: Towards a Multinatural Approach

How can we tell environmental histories/stories where other worlds have a place? This paper considers the value of cosmopolitics and its possibilities for building a multinatural environmental history. Throughout the paper, we try a cosmopolitical approach to navigating indigenous historical worlds. To do so, we mobilised materials from the Lake Pátzcuaro region, an indigenous region in west-central Mexico, whose environmental history has been the subject of debate, examining the effects that acknowledging the plurality of worlds has for understanding the consequences of our knowledge practices and for creating different ways of relating to other worlds.

Assessing Nowcast Models in the Central Mexico Region Using Radar and GOES-16 Satellite Data

In this study, the nowcast models provided by the Python pySTEPS library were evaluated using radar derived rain rate data and the satellite product Split-Window Difference (SWD) based on GOES-16 data, focusing on central Mexico. Initially, we obtained a characterization of the rainfall that occurred in the region using the radar rain rate and the SWD. Subsequently the nowcasts were evaluated using both variables. Two nowcast models were employed from pySTEPS: Extrapolation and S-PROG. The results indicate that average SWD is below 2.5 K, 90 min before the onset of rainfall events, and, on average, the SWD is 2 K during rainfall events. The results from both nowcast models were accurate and produced similar results. The nowcasts performed better when SWD data were used as input, having an average Probability of Detection (PoD) above 70% and a False Alarm Rate (FAR) reaching 40% for the 15-min prediction. The nowcasts were less accurate using the radar rain rate as input for the 15-min forecast, where the PoD was maximum 70% and FAR reaching 40%. However, these nowcasts were more reliable during well-organized precipitation events. In this work, it was determined that the nowcast models provided by pySTEPS can provide valuable rain forecasts using GOES-16 satellite and radar data for the central Mexico region.

Spatiotemporal changes in hurricane-force wind risk assessment in the Yucatan Peninsula, Mexico

Tropical cyclones are one of the most dangerous natural phenomena. These extreme events involve various hazards, such as strong winds, severe precipitation, storm surge, flooding, and landslides. In Mexico, tropical cyclones are the most frequent natural threats and have a high cost to affected populations. This research aimed to characterise the spatial and temporal changes in risk associated with hurricane winds on the Yucatan Peninsula. This effort included a comprehensive analysis of three integral risk components (hazard, vulnerability, and exposure) for three distinct time intervals (1950–2000, 1950–2010, and 1950–2020). This analytical process was executed utilising a fine-resolution hexagonal grid. Hazard was estimated by calculating the probabilities of occurrence of winds related to various hurricane categories after estimating wind fields from the International Best Track Archive for Climate Stewardship (IBTrACS) data with a parametric model. Vulnerability was approximated by constructing indicators with sociodemographic data from the National Population and Housing Census issued by Mexico’s National Institute of Statistics and Geography. With these indicators, a factor analysis was performed, and a weighted index was constructed. Finally, exposure was estimated from population density. Each of these indices was aggregated at the hexagonal level, allowing the calculation of the risk associated with hurricane-force wind. The results showed high-risk levels associated with high-hazard levels, e.g. in coastal areas such as the Riviera Maya. Similarly, high-risk levels are related to high marginalisation, i.e. vulnerability, in the northeastern zone of the Yucatan Peninsula. The increased frequency of tropical cyclones combined with high population densities has recently led to higher risk levels in this region of Mexico.

Personal and Psychological Traits of University-Going Women That Affect Opportunities and Entrepreneurial Intentions.

The purpose of this research is to analyze how personality traits and psychological profiles influence the detection of entrepreneurial opportunities by, and the intentions of, university-going women in the northwest region of Mexico. It also examines how business opportunities are decisive when it comes to awakening entrepreneurial intention. The moderating and mediating effects of the detection of business opportunities and the psychological profile are also examined with respect to the direct relationship between personal traits and entrepreneurial intentions. For this study, information was collected from 1197 students attending the Autonomous University of Baja California and the Technological Institute of Sonora through a digital survey (Google Forms) distributed via email during the second half of 2022. The PLS-SEM statistical technique was used to test the hypotheses of the proposed theoretical model. The results revealed that personality traits have positive and significant effects on the psychological profile and on business opportunities. However, it was clearly observed that one's personal traits and psychological profile have little or no influence on entrepreneurial intentions. We also found that the psychological profile is the construct that most influences business opportunities. In addition, it was also highlighted that business opportunities contribute to awakening the entrepreneurial intentions of university-going women. On the other hand, it was revealed that business opportunities have a negative moderating effect on the relationship between the psychological profile and entrepreneurial intentions. Likewise, this study has shown that the detection of business opportunities and the psychological profile have indirect effects on the relationship between the personal traits and the entrepreneurial intentions of university-going women. This research contributes to the development and strengthening of trait theory, the theory of reasoned action, and the theory of planned behavior.

Insights into Caribbean tectonics from a detrital zircon U-Pb provenance study of siliciclastic strata in western and central Cuba

The tectonic affinity and origins of the Jurassic, siliciclastic San Cayetano and Constancia formations exposed in western and central Cuba in the Caribbean region remain debated. The scarcity of modern geochronologic studies on these Cuban units hampers both sedimentary provenance and palinspastic reconstructions, resulting in Caribbean models that tend to oversimplify the formation of Cuba and correlate the Jurassic strata to various regions such as North America, South America, the Yucatán margin, or the conceptual Caribeana domain. Using laser ablation−inductively coupled plasma−mass spectrometry (LA-ICP-MS), we conducted a detailed detrital zircon (DZ) U-Pb provenance study of these Cuban siliciclastic strata that provides critical insights into understanding the formation of Cuba during the Early Jurassic rifting stages of Pangea. Results from 19 San Cayetano Formation samples show a dominant Oaxaquia (ca. 1 Ga) and Chiapas batholith (ca. 250 Ma) signature, while six Constancia samples display variable ca. 1 Ga and ca. 250 Ma grains. The Lower Cretaceous Polier Formation and the Paleocene Moncada Formation also display the same ca. 1 Ga and ca. 250 Ma signatures. After comparing these Cuban data with data from other regional DZ studies, we propose that that the San Cayetano and Constancia formations are correlative to the Todos Santos Formation located in the southwestern Yucatán region of Mexico. These Cuban units were predominantly deposited adjacent to the Chiapas batholith during the Early Jurassic in northwest−southeast-trending basins created by Pangean rifting. They were eventually sheared during eastward migration of the Caribbean plate and transported northward until they collided with the North American continent in the Paleogene. This DZ study provides new constraints on the tectonic provenance of western and central Cuba and improves plate tectonic reconstructions of the Caribbean.

Statistical Analysis by Linear Regression of the Prevalence of Flatfoot in Preschool Children of a Mexican Community

Context: In Mexico's rural towns, it is essential to generate a culture of studying the prevalence of flat feet in children aged 3 to 5, whose arch is still in development and can be corrected. By means of a computer application, statistical bar graph and correlation studies via linear regression can validate the results obtained regarding the categorization of infants' footprint type, which are acquired through the Hernández Corvo index (HCI), Clarke’s angle protocol (CA), the Staheli index (SI), the Chippaux index (CI), and the body mass index (BMI). Methods: A statistical analysis of the plantar footprint of 95 infants in a rural region of Mexico was carried out, employing a computational technique together with a photo-podoscope. Footprint images were acquired, processed, and classified. The footprint type was categorized with respect to the HCI, CA, and the Staheli-Chippaux index (SCI). The footprint distribution was validated via the linear regression method. Results: We evidenced a prevalence of flat foot of 54,7% in relation to HCI, 58,9% in relation to CA, and 61,05% in relation to SCI, where the male gender was shown to be more susceptible (up to 28, 32, and 33 cases, respectively). The best prediction was obtained using the SI and the CI: 90,7 and 87,0% for the right and left feet, with a positive increase. No dependence on body composition was observed. Conclusions: The diagnosis of the type of footstep, in its normal, cavus, and flat categories, shows the prevalence of flat feet among infants aged 3 to 5, with at least 28 cases, mostly male and without dependence on weight. Although it is difficult to perform plantar footprint diagnoses in the rural communities of Mexico, this statistical study highlights the importance of monitoring foot development in preschool infants with the advantages and practicality of computational techniques.

Adult People with Hemophilia A Have Low Annualized Bleeding Rate, However the Arthropathy Remains a Burden: A Retrospective Cohort Study.

Congenital Hemophilia A is a complex disease to treat, especially in places without access to hemophilia treatment centers (HTCs). The primary aim of this study was to analyze the outcomes of a cohort of adult people with congenital hemophilia A in an HTC localized in the Bajio region of Mexico. Observational retrospective study of a cohort of 82 adult people with congenital hemophilia A treated in a tertiary-level hospital in the Bajio region of Mexico, between June 2022 and June 2023. The median age of the patients was 29.5years, 60.9% with severe hemophilia A, 53.6% were under some factor VIII prophylaxis regimen, and 52.4% had home therapy. The median annualized bleeding rate (ABR) was one bleed/year (IQR 0-3 bleeds/year) including a median of zero joint bleeds/year (IQR 0-3 bleeds/year). The presence of high-response inhibitors was detected in 8.5%, with an overall incidence of inhibitors of 14.6% of the cohort. Univariate analysis showed that inhibitors (OR 21.10; CI 95% 1.20-370.3; P = 0.03) and clinical arthropathy (OR 6.14; CI 95% 2.13-17.68; P = 0.001) were significantly higher in severe hemophilia. Clinically significant arthropathy was found in 71.9% of patients. Ultrasonography of the target joints showed that mainly cartilage degeneration was affected. Blood transfusion-associated viral infections were detected in 10.9% of patients. In our HTC, current treatment with hemostatic agents allows adequate control of ABR with acceptable inhibitor rates. However, we still have joint damage in most patients, which is partly explained by the fact that prophylaxis was introduced only in recent years.

Design and control of a distillation sequence for the purification of bioethanol obtained from sotol bagasse (Dasylirium sp.)

Sotol bagasse (SB) is a byproduct generated during the fermentation of the sotol plant (Dasylirium sp.) for the production of a traditional alcoholic beverage in Mexico. In this study, a novel ethanol purification distillation sequence is proposed, utilizing ethanol produced from SB treatment as described by González-Chavez et al. (2022). Prior to purification, the ethanol-water mixtures exhibited ratios of 0.054 and 0.935. The proposed distillation sequence comprises three columns: i) depletion, ii) extraction (employing ethylene glycol as the solvent agent), and iii) solvent recovery. To assess energy consumption and controllability, three solvent:feed ratios (1.5:1, 2:1, 2.5:1) were examined, taking into account the feed to the second column. The lowest energy consumption was observed at 31 × 103 kW, corresponding to the 1.5:1 ratio. Optimal controllability was achieved at a solvent:feed ratio of 2.5:1, as evidenced by the lowest Integral Absolute Error (IAE) value of 3.3 × 10–3 and the highest proportional gain (Kc) value of 250. In summary, we leveraged previously reported experimental data to design a new distillation sequence with potential applications in the ethanol purification derived from SB fermentation. The outcomes of this investigation underscore the importance of promoting circular economy practices, particularly in the northern region of Mexico, where significant quantities of agrowastes are generated.

Grammatical Object Passives in Yucatec Spanish

Yucatec Spanish displays a type of sentence that appears to mix elements of an active impersonal and a passive. For example, “te castigaron por mi tío” may be interpreted as “you were punished by my uncle”, where a by-phrase headed by the preposition por introduces an agent rather than a cause or reason. The verb has active morphology—it is always third-person plural, and accusative clitics (e.g., te) and DOM-marked objects are possible. This type of sentence, which I descriptively label an active–passive (A-P) hybrid, has been mentioned in previous literature on contact varieties in Mayan-speaking regions of Mexico and Guatemala, but it has not been precisely described or analyzed formally. I argue that A-P hybrid constructions are instances of grammatical object passives. Grammatical object passives have certain active properties—accusative case is assigned to a theme argument and the morphology of the verb is active, but like passives, they require that the expression of the agent be a by-phrase rather than a grammatical subject. I claim that this is possible in this variety of Spanish due to the emergence of a null pronoun, absent in other varieties of Spanish, that can merge in the specifier of Voice and restrict, rather than saturate, an agent argument, permitting the subsequent addition of a third-person by-phrase. I demonstrate that this analysis is able to explain its hybrid properties as well as other person restrictions on the by-phrases that express the agent. Finally, I describe avenues of future research that will help discern the role that language contact may have played in the emergence of A-P hybrids.

Influenza A virus antibodies in dogs, hunting dogs, and backyard pigs in Campeche, Mexico.

This study aimed to identify exposure to human, swine, and avian influenza A virus subtypes in rural companion and hunting dogs, backyard pigs, and feral pigs. The study took place in a region of southeastern Mexico where the sampled individuals were part of backyard production systems in which different domestic and wild species coexist and interact with humans. We collected blood samples from pigs and dogs at each of the sites. We used a nucleoprotein enzyme-linked immunosorbent assay to determine the exposure of individuals to influenza A virus. Haemagglutination inhibition was performed on the positive samples to determine the subtypes to which they were exposed. For data analysis, a binomial logistic regression model was generated to determine the predictor variables for the seropositivity of the individuals in the study. We identified 11 positive individuals: three backyard pigs, four companion dogs, and four hunting dogs. The pigs tested positive for H1N1 and H1N2. The dogs were positive for H1N1, H1N2, and H3N2. The model showed that dogs in contact with backyard chickens are more likely to be seropositive for influenza A viruses. We demonstrated the essential role hunting dogs could play as intermediate hosts and potential mixing vessel hosts when exposed to human and swine-origin viral subtypes. These results are relevant because these dogs interact with domestic hosts and humans in backyard systems, which are risk scenarios in the transmission of influenza A viruses. Therefore, it is of utmost importance to implement epidemiological surveillance of influenza A viruses in backyard animals, particularly in key animals in the transmission of these viruses, such as dogs and pigs.

Analysis of the Regional Economic Structure in Mexico (2019-2021)

The objective of this research is to analyze the behavior of the dynamism and distribution of the economy in the regions of Mexico in the period 2019-2021. A brief explanation of economic growth and economic structure is provided, as well as the importance of territorial analysis for planning development strategies in the territories. The territorial analysis techniques applied in this work and the methodology for their implementation are explained. The work is based on the study of the dynamics and structure of the economy based on the "gross value added" indicator, which allows for measuring the contribution made by the different sectors in the municipalities. As a result of the research, the main economic activities within the regions of Mexico and those processes of structural change that have favored the development of the regions are identified. The most lagging sectors and the municipalities whose economic structure does not favor the dynamics demanded by their economic development are pointed out. Finally, a set of conclusions is reached that can be used to define strategies and public policies aimed at promoting investment and local economic development management.

Regionalization of the Mortality Risk from Cardiomyopathy and Respiratory Diseases Based on the Maximum Entropy Model.

This research presents a time-series study in one of the most polluted regions in Mexico, the southern part of the Mezquital Valley. Three mortality causes related to areas highly contaminated by industrial activities were considered to carry out this model, namely, ischemic cardiomyopathy, mesothelioma, and pneumoconiosis. The pollutant exposure factors used in the maximum entropy modeling were distance to rivers, distance to industries, particulate matter less than 2.5 microns (PM < 2.5 µm), and the digital elevation model (DEM). A model that expresses the presence of the disease by areas of exposure to pollutants was also obtained. In addition, the odds ratio was calculated to evaluate the level of association of ischemic cardiomyopathy (OR = 3.37 and 95% CI: 3.05-3.6) and mesothelioma (OR = 4.79 and 95% CI: 3.5-6.08) by areas of exposure. In the case of pneumoconiosis, only cases in the very high exposure category were recorded, so it was not comparable with the remaining areas. It is important to mention that particulate matter in the municipalities of the Mezquital Valley presented values above 20 μg/m3 and that in accordance with the provisions of the Norma Oficial Mexicana de Salud Ambiental or NOM (translated as Mexican Official Standard for Environmental Health) and the Agency for Toxic Substances and the Disease Registry (ATSDR), high concentrations of particulate matter can have a severe impact on the development of some diseases. In the studied area, ischemic cardiomyopathy and mesothelioma were attributed to pollution in 70.3% and 79.1%, respectively; therefore, pollution mitigation could prevent the occurrence of these two diseases.

Exploring diatomite as a novel natural resource for ecofriendly-sustainable hybrid cements

The primary goals of the present study are to decrease CO2 emissions and minimize the excessive consumption of natural resources associated with cement production. The main natural resource was diatomite (DIO), a naturally abundant material found in several regions of Mexico. Four different hybrid cement (HC) mixtures were prepared using NaOH, while maintaining a consistent OPC percentage of 10 % across all the mixtures. The obtained results demonstrate the exceptional performance of one of these HC mixtures, surpassing OPC properties in terms of compressive strength at 1, 7 and 28 days, with values of 28.8, 47.16 and 62.9 MPa, respectively. The outstanding HC mixture underwent thorough confirmation through a range of analyses, such as TG, FTIR, SEM and EDX. This innovative HC composite offers several solutions to reduce CO2 emissions and conserve natural resources currently wasted in cement manufacturing, making it a compelling choice for various industrial and construction applications.

Tequila, bats, and agave farmers: towards an understanding of the right incentives to protect genetic diversity

Tequila has a designation of origin by which it can only be produced with the blue agave (Agave tequilana Weber blue variety) grown in certain regions of Mexico. For several decades, an intensive asexual technique of reproduction has prevailed in the tequila industry. This has not only been detrimental for the agave’s genetic diversity, but it has also harmed bat populations. The low levels of diversity have increased the agave’s exposure to pests and diseases and have limited the possibilities for artificial selection of beneficial characteristics that can improve production. Arguably, with the cooperation of producers and consumers, it is possible to have an environmentally friendly and resilient production system. We focus on the agave producers and analyze their willingness to let some of their plants flower in exchange of some monetary and non-monetary benefits. By analyzing data from a choice experiment, we show that farmers are willing to let some of their plants flower even when they only receive partial compensation for the value of the plants. Farmers also show a willingness to participate in a conservation program if they receive a non-monetary transfer or expect an increase in yield because of the program. Our results provide a relevant piece of information that can help policymakers, producers, NGOs, and other participants in the tequila industry, in the design of effective strategies that can lead to the genetic conservation of blue agave and the protection of magueyero bats.

Diferencias regionales de la disolución conyugal por divorcio y separación en el norte de México

This is a descriptive socio-demographic study of the marital dissolution by divorce and separation in the northern border region of Mexico. The objective is to provide a general view of the level of this type of dissolutions in the region and some of its differences among the federal entities that form it. For this purpose, we use information from the National Survey of the Demographic Dynamics 2018 (ENADID) and secondary sources of information. The analysis is based on the indicators about the dissolution of the first conjugal union of ever-married women that were calculated through the life table technique and logistic regression models. The results evidence that the northern region has one of the highest levels of marital dissolution in the country, but with interesting differences between the states located in the northwest and the northeast generating a dual pattern in the region. divorce, marital dissolution, family instability, northern border, Mexico

A new genus and species of Microphalloidea (Digenea), parasite of Peropteryx spp. (Chiroptera: Emballonuridae) from the Neotropical region of Mexico revealed by morphological and phylogenetic analyses.

The present study aims to describe a new genus and species of microphalloid digenean parasite of two species of bats of the genus Peropteryx from the Mexican Neotropics (in the states of Chiapas and Yucatán). Morphological and molecular data (28s rDNA ribosomal gene sequences) were used to study Digeneans. Sagittatrema zutzi gen. nov. sp., nov., is diagnosed morphologically by having a sagittiform body, a genital pore in the midline of the body, posterior to the ventral sucker, and a cirrus sac running through much of the diameter of the ventral sucker. The nine sequences generated from the 28S rDNA gene were used to examine the phylogenetic affinities of this new taxon within the superfamily Microphalloidea Ward, 1901, using Maximum Likelihood and Bayesian Inference analyses. Both analyses resulted in trees with similar topologies and formed a well-supported clade (Bt = 100; pp = 1) with the Sagittatrema sequences. Because of the new genus's phylogenetic position and that some sister families to the proposed taxa, like Pleurogenidae and Prosthogonimidae, are polyphyletic, we prefer to consider Sagittatrema as a genus incertae sedis within Microphalloidea. A full systematic review of microphalloids is needed to confirm their phylogenetic position.

Using AquaCrop for Irrigation and water productivity assessment of Table grapes in arid region of Mexico

The aim of this work is to use the AquaCrop model for irrigation and water productivity assessment of Table grapes in arid region of Mexico during 2005 and 2006 cropping seasons. The irrigation efficiency was investigated by comparing the irrigation scheduling design used by the farmer to the AquaCrop model recommendations. Data analysis showed that the farmer irrigates almost every day, which results in the water content in the root zone always exceeding the soil moisture at field capacity (FC). This generates substantial losses of water through deep percolation. By using the AquaCrop model, the optimization of irrigation water scheduling in order to avoid both water stress and deep percolation was about 547 mm and 510 mm, which it is about half of what was applied by the farmer (1006 mm and 930 mm) during 2005 and 2006, respectively. This large difference, lost through deep percolation, reduces the water productivity (WP) by about 45%.

Investigation of the Chyphotidae and Xyedidae Families (Insecta: Hymenoptera)

The Chyphotidae are a family of wasps similar to the Mutillidae, differing most visibly in the presence, in females, of a suture separating the pronotum from the mesonotum. These species are found primarily in arid regions of the southwestern United States and adjacent regions in Mexico. A record of a single species of Chyphotidae as ectoparasitoids of Solifugae (Arachnida) that pupated within the host’s burrow is all that is currently known about their habits. The Typhoctinae are known to be diurnal, and the nocturnal Chyphotinae. The adults of Xyedidae are common flowers, pollen producers, and adjacent pine trees. In the Nearctic, these are the first saw wasps to appear in spring and are usually found flying around pine branches. The larvae feed on the shoots and pollen of these plants, although the larvae of a few species feed on deciduous trees rather than conifers. The objective is to survey the characteristics of the families Chyphotidae and Xyedidae (Insecta: Hymenoptera). Document analysis was performed as a data collection method to gather information on theoretical books, theses banks, university dissertations, scientific journals, documents, and digital platforms sites: The search criterion for articles was to prioritize articles that dealt with the topic. Document analysis was used as a data collection method to gather information on theoretical books, theses banks, university dissertations, scientific journals, documents, and websites.

The genus Anathallis (Orchidaceae: Pleurothallidinae) in Mexico

Anathallis encompasses nearly 120 species of neotropical orchids, with Mexico representing the northernmost limit of its distribution. During the current century, up to fifteen Mexican species have been classified in Anathallis. However, in recent years, several of them have been reclassified into Lankesteriana, Specklinia, and Stelis. Currently, Anathallis in Mexico includes A. greenwoodii, A. lewisiae, A. minutalis, A. oblanceolata, A. sertularioides, and A. yucatanensis. This work presents the taxonomic treatment for these species, the modeling of their potential distribution, and the assessment of their conservation status in Mexico. For this, specialized literature, living and herborized specimens, and online databases were examined. For each species, a description, drawing, photograph, and distribution map were prepared; additionally, information regarding nomenclature, habitat, phenology, comparison with similar species, and an assessment of its risk status is provided. Mexican Anathallis plants are characterized by their diminutive habit, rhizomatous growth, semi-open flowers with acute sepals and petals, free lateral sepals, mobile lip, and winged column. The genus includes five Mexican species: A. lewisiae, A. minutalis, A. oblanceolata, A. sertularioides, and A. yucatanensis. Anathallis greenwoodii exhibits a morphology more similar to Lankesteriana and it was transferred accordingly. Anathallis oblanceolata was previously known only from the type locality and is redescribed based on specimens previously confused with A. minutalis. Both species are endemic to the mountainous regions of Mexico. Anathallis lewisiae, A. sertularioides, and A. yucatanensis grow in warm, lowland areas along the Gulf of Mexico coast and Yucatan Peninsula. Lectotypes are designated here for Pleurothallis minutalis, P. tenuissima, and P. trichopoda.