Monospecific Genus Research Articles

Descriptions and notes on the larvae of Austrocyphon Zwick, Contacyphon mobula Zwick, Fratercyphon gen. nov., Leptocyphon furcalonga Zwick, and Nothocyphon Zwick (Coleoptera, Scirtidae), and a phylogeny based on these larvae using mitochondrial sequence data

ABSTRACT The larvae of marsh beetles, Scirtidae, are common in freshwater habitats in Australia but are usually ignored in faunal surveys. Most of the commoner genera found in open fresh water have been described, however, numerous larvae have been collected from the specious genera Austrocyphon and Nothocyphon that do not yet have a description. This paper describes those taxa which were known but not described at the time. In addition, it includes generic descriptions of the larvae of an Australian species of Contacyphon, and the larva of a species of Leptocyphon with a further report on its unusual colonial lifestyle and the great reduction of the breathing apparatus of larvae in this genus. Larvae were identified by rearing and/or by genetic matching using mitochondrial cytochrome c oxidase (COI) sequencing. In addition, using the available COI sequences, a phylogenetic analysis was undertaken which supported the monophyly of species in each of the genera Austrocyphon and Nothocyphon. Also evident was the phylogenetic distinction between these two genera and a group of taxa related to N. frater (Blackburn). We have placed these species in a new genus, Fratercyphon. This genus now includes the following three species previously in Nothocyphon; F. frater (Blackburn), F. amita (Zwick) and F. patruelis (Zwick). The monospecific genus Tasmanocyphon Zwick is supported as a distinct evolutionary lineage, as is the unique larva of “Strathgordon” described by Watts in 2014.

Apothecia trump setae: Paratricharia belongs in the Aulaxina clade and is distant from Tricharia (lichenized Ascomycota: Gomphillaceae)

AbstractThe phylogenetic relationships of the monospecific genus Paratricharia, with the single species P. paradoxa, within the family Gomphillaceae are resolved using newly generated sequences of the mtSSU and nuLSU markers for three specimens collected in Costa Rica. The results support placement as sister to the genus Caleniopsis, the two genera sister to a clade containing the genera Aulaxina and Aulaxinella. This placement confirms earlier studies based on cladistic analysis of phenotype characters and phenotype-based phylogenetic binning, suggesting that apothecial features are more informative for the phylogenetic placement of taxa within Gomphillaceae than thallus characteristics.

The first recognition of the enigmatic fossil shark genus Megalolamna (Lamniformes, Otodontidae) from the lower Miocene of Europe and M. serotinus (Probst, 1879) as the newly designated type species for the genus

Megalolamna is an elusive extinct shark genus (Lamniformes: Otodontidae) previously known from the upper Oligocene–Miocene of the USA, Colombia, Ecuador, Peru, and Japan. Here, we document the first occurrence of Megalolamna from Miocene marine deposits in Europe, specifically from Austria, France, Germany, and Italy. Although the taxon is regarded as a monospecific genus, this study reveals that the species name serotinus has the priority over any previously used names for the taxon and thus redescribes it as Megalolamna serotinus (Probst), comb. nov. This study is also significant because it demonstrates the existence of Megalolamna in the Mediterranean and Paratethys seas during the Miocene. Megalolamna inhabited the tropical–mid-latitudinal zones with spotty but wide geographic distribution.

Inter-archipelago dispersal, anagenetic evolution, and the origin of a rare, enigmatic plant genus on a remote oceanic archipelago.

Island plants have long interested biologists because of their distinctive morphological features and their isolation on small land areas in vast oceans. Studies of insular endemics may include identifying their ancestors, tracing their dispersal to islands, and describing their evolution on islands, including characters adaptive to island life. Thamnoseris is a monospecific genus endemic to the Desventuradas Islands, Chile. Its origins and relationships are unresolved, given the challenges of getting to the islands and accessing plants there. Sequences from ITS of nrDNA and the complete chloroplast genome were employed to resolve phylogenetic relationships of Thamnoseris. Phylogenetic analyses of nuclear and chloroplast sequences showed Thamnoseris nested within or sister to Dendroseris, the largest endemic genus in the Juan Fernández Islands. Thamnoseris evolved from a common ancestor of all or most species of Dendroseris prior to the diversification of Dendroseris in the Juan Fernández archipelago. The ancestor of Thamnoseris dispersed to the Desventuradas archipelago, which consists of the islands San Ambrosio and San Félix, within the past 3 Ma (the age of San Ambrosio). This is the only known example of possible plant dispersa\l between the Juan Fernández and Desventuradas Islands. We also mention two less likely biogeographic scenarios for the origin of Thamnoseris, which has features not seen in Dendroseris: small capitula with yellow florets; style branches barely divergent; and basally swollen subtending involucral bracts, all features associated with selfing and reduced dispersal. Goats and rabbits (now removed) reduced T. lacerata, once very abundant on the Desventuradas Islands, to several plants, making it of extreme conservation concern and worthy of further study.

On the systematic position of the genus Fractonotus (Eutardigrada, Parachela)

The genus Fractonotus was erected on the basis of the peculiar appearance of the apophyses for the insertion of the stylet muscles on the buccal tube, and it has been attributed, together with the genus Microhypsibius, to the family Microhypsibiidae on the basis of the structure of the claws. A subsequent molecular investigation on Microhypsibius (18S and 28S rRNA) assigned the family Microhypsibiidae to the superfamily Hypsibioidea. Recently two other species, Isohypsibius gilvus and Calohypsibius verrucosus were transferred to Fractonotus and the latter was sequenced (18S and 28S rDNA, ITS-2), with the conclusion that the genus Fractonotus should be assigned to the family Isohypsibiidae, superfamily Isohypsibioidea. However, the transfer of I. gilvus and C. verrucosus to Fractonotus was incorrect. In fact, these two species definitely have claws of the Isohypsibius type, while Fractonotus caelatus, the type species of the genus, clearly has claws of the Microhypsibius type, in addition to other characters of the Hypsibioidea. Therefore, Fractonotus remains a monospecific genus in the Microhypsibiidae family, superfamily Hypsibioidea. The other two species belong to Isohypsibius or, if later confirmed by further morphological and new molecular data, to a new genus of Isohypsibiidae.

Cretacetrocta, a new genus of barklice from the Early Cretaceous Lebanese amber

Pachytroctidae is a diverse extant family of Troctomorpha, represented by few fossil taxa from the Cretaceous ambers of Myanmar and Lebanon, and a single species from the Eocene amber of France (Oise). Herein, we describe and illustrate a new monospecific genus Cretacetrocta libanella Hakim & Azar gen. et sp. nov. from the Lower Cretaceous Bqaatouta amber outcrop (Lebanon). The new taxon is tentatively assigned to Pachytroctidae, and the only hitherto record from Lebanese amber of the subfamily Tapinellinae. The new finding reveals potential unreliability of the character ‘nodulus’ as a key diagnostic characteristic of the family, at the very least among fossil representatives. On the other hand, sexual dimorphism, a common trait in modern species of the Pachytroctidae, remains unveiled among extinct taxa.

Dwarf males of the seven-arm octopus, Haliphron atlanticus: morphology and adaptations

ABSTRACT The Argonautoidea is a monophyletic superfamily of pelagic incirrate octopods primarily distinguished by an unusual means of copulation where a sexually modified arm, or hectocotylus, is detached and transferred from dwarf males to the female. Males of the seven-arm octopus Haliphron atlanticus are scarcely observed and little is known about their reproductive strategy. A detailed description of H. atlanticus digestive system, hectocotylus morphology, histology and functioning was carried out with fresh and preserved material from two males captured in the Bay of Biscay (North Atlantic). It is the first time that a hydrostatic sac/swimbladder in the anterior region of the intestine is described in an argonautoid male. Investing in reproductive rather than somatic growth is evident in the dwarf males of H. atlanticus, which lack the Needham sac and the terminal organ. Functionally, these organs have been replaced by two external modifications at the distal end of the detachable hectocotylus: a spermatophore reservoir with a single long spermatophore and a muscular penis, both essential to ensure fertilization once the hectocotylus is detached from the dwarf males. Haliphron has been considered a monospecific genus, with a single species distributed around the world. However, mitochondrial genetic analysis (cytochrome c oxidase subunit I and 16S ribosomal RNA) supports the existence of at least two species of Haliphron, one in the northern Atlantic and another in the southern Atlantic/Pacific. Further genetic and morphological studies are needed to unravel the diversity of this oceanic octopod family.

Hyperparasitism in bat flies (Diptera: Streblidae): new records and interaction networks in the Neotropics

Hyperparasitism is defined as the interaction where one parasite is infected by another parasite. In bat flies (Streblidae and Nycteribiidae), both hyperparasites and microparasites (bacteria, viruses, fungi, and arthropods such as mites) have been documented. Fungi belonging to the order Laboulbeniales are microscopic parasites of a wide diversity of arthropod hosts. Three genera exclusively target bat flies: Arthrorhynchus, which parasitizes species within Nycteribiidae in the Eastern Hemisphere, while genus Gloeandromyces and Nycteromyces parasitize Streblidae in the Western Hemisphere. Among the hyperparasitic arthropods, mites of family Neothrombidiidae, particularly the monospecific genus Monunguis, are known to parasitize bat flies. Here we present the first records of the hyperparasites Monunguis streblida and Gloeandromyces pageanus f. polymorphus parasitizing Streblidae bat flies in Colombia and a summary of these hyperparasitic interactions in the Neotropics. We detected fungi and mites parasitizing bat flies that were collected in the Magdalena River Basin, Colombia, in field expeditions in 2018, 2022, and 2023. We identified 17 bat flies and two species of hyperparasites, specifically M. streblida and the fungi Gloeandromyces. Our search for reports of these interactions in the Neotropics revealed that seven species of Trichobius (Streblidae) are parasitized by M. streblida, whereas Paratrichobius longicrus (Streblidae) is parasitized by Gloeandromyces pageanus f. polymorphus. These interactions have been reported in 11 countries, but our records are the first of M. streblida and Laboulbeniales fungi parasitizing bat flies in Colombia. So far, a total of 14 species of fungi and one species of mite have been associated with 19 species of bat flies, which in turn, are linked to 15 species of Neotropical bats.

Phylogenetic Relationships Within Tribe Hibisceae (Malvaceae) Reveal Complex Patterns of Polyphyly inHibiscusandPavonia

Abstract—The diverse and spectacular Hibisceae tribe comprises over 750 species. No studies, however, have broadly sampled across the dozens of genera in the tribe, leading to uncertainty in the relationships among genera. The non-monophyly of the genusHibiscusis infamous and challenging, whereas the monophyly of most other genera in the tribe has yet to be assessed, including the large genusPavonia.Here we significantly increase taxon sampling in the most complete phylogenetic study of the tribe to date. We assess monophyly of most currently recognized genera in the tribe and include three and thirteen newly sampled sections ofHibiscusandPavonia,respectively. We also include five rarely sampled genera and 137 species previously unsampled. Our phylogenetic trees demonstrate thatHibiscus, as traditionally defined, encompasses at least 20 additional genera. The status ofPavoniaemerges as comparable in complexity toHibiscus. We offer clarity in the phylogenetic placement of several taxa of uncertain affinity (e.g.Helicteropsis,Hibiscadelphus, Jumelleanthus,andWercklea). We also identify two new clades and elevate them to the generic rank with the recognition of two new monospecific genera: 1)BlanchardiaM.M.Hanes & R.L.Barrett is a surprising Caribbean lineage that is sister to the entire tribe, and 2)AstrohibiscusMcLay & R.L.Barrett represents former members ofHibiscus caesiuss.l.CraveniaMcLay & R.L.Barrett is also described as a new genus for theHibiscus panduriformisclade, which is allied toAbelmoschus. Finally, we introduce a new classification for the tribe and clarify the boundaries ofHibiscusandPavonia.

Multiple sources of evidence unravel a complex taxonomic history: the new genus Leonoria of the Spermacoce clade (Spermacoceae-Rubiaceae)

For a long time, the taxonomic status of Denscantia, a genus endemic to the Atlantic Forest along the Brazilian coast, has been a topic of discussion. Phylogenetic analyses using two nuclear and four chloroplast DNA markers from 82 accessions representing 19 genera of the Spermacoce clade (tribe Spermacoceae, Rubiaceae) confirm that the Brazilian genus Denscantia is biphyletic. Together with the recovered phylogenetic relationships, the analyses of reproductive morphological characters, leaf morphology and anatomy, histochemical, geographic distribution ranges, and ecological niche derived from climatic space further demonstrate that Denscantia calcicola is a distinct lineage from the other Denscantia species. Therefore, the above-mentioned species should be taxonomically designated as a new monospecific genus, Leonoria. Significant morphological differences between Leonoria and Denscantia were found in inflorescence organization, style shape, fruit dehiscence and pollen morphology. Morphological and anatomical variation among leaf traits was found in epidermal cells, trichome distribution, mesophyll histochemistry and vascular organization. The analysis of occurrence records of 207 specimens demonstrates a clear ecological distinction between of Denscantia s.s. and Leonoria, which is ecologically confined to limestone outcrops associated with seasonally dry forests. The current study highlights the importance of an integrative taxonomic approach combining multiple sources of evidence to unravel complex taxonomic history within Spermacoceae.

Complete Mitochondrial Genome and Its Phylogenetic Position in Red Algae Fushitsunagia catenata from South Korea.

The mitogenome is an important tool in taxonomic and evolutionary studies. Only a few complete mitogenomes have been reported for red algae. Herein, we reported the complete mitochondrial genome sequence of Fushitsunagia catenata (Harvey) Filloramo, G.V. and Saunders, G.W. 2016, a monospecific genus. The genome was 25,889 bp in circumference and had a strongly biased AT of 70.4%. It consisted of 2 rRNAs, 23 tRNAs, and 24 protein-coding genes (PCGs). nad5 (1986 bp) was the largest and atp9 (231 bp) was the smallest PCG. All PCGs used ATG as an initiation codon and TAA as a termination codon, except TAG, which was the termination codon used in the sdh3, rps3, and rps11 genes. The general structure and gene content of the present findings were almost identical to those of other red algae genomes, particularly those of the Rhodymeniales order. The maximum likelihood analysis showed that F. catenata was closely related to Rhodymenia pseudopalmata. The mitochondrial genome data presented in this study will enhance our understanding of evolution in Rhodophyta species.

Chlorohiptage (Tetrapteroids, Malpighiaceae), a distinct new genus endemic to Vietnam based on morphological and molecular data

Background and aims – Vietnam is one of the leading diversity centres for Asian Malpighiaceae, comprising 24 accepted species and three native genera (i.e. Aspidopterys, Hiptage, and Tristellateia). During recent fieldwork towards completing the taxonomic revision of Malpighiaceae for the Flora of Vietnam, we have collected specimens from two populations that could not be placed in any of the three native genera of this family. We performed morphological and molecular phylogenetic studies to test the generic placement of those specimens. Material and methods – We sampled 27 genera (including the Asian Acridocarpus, Aspidopterys, Brachylophon, Hiptage, Stigmaphyllon, and Tristellateia, out of a total of 75) of Malpighiaceae representing all phylogenetic clades comprising paleotropical lineages (i.e. acridocarpoids, bunchosioids, tetrapteroids, malpighioids, and stigmaphylloids), the unusual specimen recently collected in Vietnam, and the two genera of Elatinaceae as outgroups. Maximum Likelihood analysis was carried out based on a molecular matrix alignment of the internal transcribed spacer marker (ITS). Comprehensive morphological analyses were also carried out based on the collected specimens and additional herbarium specimens. Key results – Our molecular phylogeny strongly supported the unusual specimen from Vietnam placed as sister to Hiptage in the tetrapteroid clade. Key morphological traits differing these Vietnamese specimens from Hiptage were identified related to the floral bud imbrication, shape, colour, posture of sepals and petals, length of stamen filaments, number of styles, and shape of mericarps, allowing the proposition of a new monospecific genus. Conclusions – Chlorohiptage vietnamensis is proposed as a new monospecific genus closely related to Hiptage but differing in several key morphological traits. A complete morphological description is provided alongside photographic illustrations and notes on its conservation, distribution, ecology, etymology, and taxonomy. Additionally, an updated identification key to the genera of the tetrapteroid clade is provided.

A Review of the Ethnobotany, Biological Activity, and Phytochemistry of the Plants in the Gundelia Genus.

A comprehensive literature search was conducted in PubMed, Cochrane Library, Web of Science, Scopus, the National Library of Medicine (NLM) catalog, and Google Scholar from January 1980 up until October 2023 on plants in the Gundelia genus. Gundelia L. (Asteraceae) has been treated as a monospecific genus with Gundelia tournefortii L. (1753: 814) in most recent floras with wide variation in corolla color, but nowadays, the genus consists of 17 species. The unripe inflorescences of these species, especially G. tournefortii L., are consumed in many ways. 'Akkoub' or 'akko' in Arabic, "Kangar" in Persian, and "Silifa" in Greek are the common names of G. tournefortii L., also known as tumble thistle in English. They have been used in traditional medicine to treat bronchitis, kidney stones, diarrhea, stomach pain, inflammation, liver and blood diseases, bacterial and fungal infections, and mumps. Based on recent studies, their extracts have exhibited hepatoprotective, hypolipidemic, antioxidant, anti-inflammatory, and antimicrobial effects. Moreover, a variety of phytochemicals, including terpenoids, sterols, and fatty acids, as well as vitamins and minerals, have been identified in this genus. This study reviewed the ethnobotany, phytochemicals, and biological activities of the plants in the Gundelia genus as functional foods and herbal remedies.

Ontogeny of interxylary phloem and stem anatomy of the Cuban endemic Henleophytum (Malpighiaceae)

Lianas and vascular variants have long been correlated since it is in lianas where they are most commonly found. Structurally, these vascular variants mix soft and stiff tissues allowing lianas to twist without breaking when climbing up to the forest canopies. The study of vascular variants in Malpighiaceae lianas has a long history focusing on species-diverse taxa; however, interest in understanding them in understudied, smaller taxa has unraveled vascular variants previously unknown to the family, such as the interxylary phloem of Henleophytum, a Cuban endemic, monospecific genus. Interxylary phloem in Malpighiaceae had been previously recorded in the distantly related genera Dicella, Niedenzuella, and Tristellateia. Interxylary phloem in Henleophytum derives from a cambium that in certain periods and sites produces phloem both inward and outward, similar to the pattern described for Dicella. The phloem produced outward is not equal to that produced inward. Indeed, sieve tube elements of the inner phloem are always much wider and more abundant, something likely indicative of a division of labor between both phloem types, one specializing in conduction and the other in carbohydrate storage. This constitutes a new report of a vascular variant outside the large Tetrapteroid clade, where almost all the vascular variants have been reported for the family so far, and supports the idea of the independent, multiple origins of vascular variants in Malpighiaceae.

Phylogenetic evidence suggests the non-validity of the Iberian land snail genus Tartessiberus and confirms its synonymy with Iberus (Helicidae).

The monospecific genus Tartessiberus was described in the year 2021 including a single species (T.cilbanus). However, its description relied solely on morphological and anatomical data. In the present work, we use a fraction of the mitochondrial DNA cytochrome oxidase subunit I (COI), 16S ribosomal RNA (16S rRNA) and the nuclear large ribosomal subunit (LSU) to clarify its validity through phylogenetic positioning. Knowledge of the distribution of this species is also improved by citing new locations and expanding the geographical range to approximately 200 km2. Additionally, a morphometric analysis of 259 shells is presented for comparisons with shells of the Iberusmarmoratus complex and testing the power of conchological features as a tool for specimen identification. The relatively high conchological variability found for T.cilbanus, together with the discovery of populations with intermediate conchological features between T.cilbanus and other closely related taxa, suggest that the determination of this species should be based on genetic criteria. Our molecular analyses demonstrate that T.cilbanus belongs to the Iberus genus, and thus, we proceed to update its taxonomic status to Iberuscilbanuscomb. nov., and, thus, to consider Tartessiberus from now on as a junior synonym of Iberus.

Revisiting Metternichia (Solanaceae) Through an Integrative Approach: A Monotypic Genus?

Abstract— Improving species delimitation and knowledge on species complexes is crucial for many areas of study in Biology, especially conservation. Integrative taxonomy contributes to this topic by using different approaches to better delineate taxonomic boundaries. Metternichia (Solanaceae), historically a monospecific genus, has a geographic range that comprises contrasting environments. Metternichia principis was described as having two varieties: the typical variety, found in the humid forests of eastern Brazil (Atlantic Forest region), and M. principis var. macrocalyx, which presents a larger calyx and inhabits mostly semi-arid areas (Caatinga region). In this study, we tested the validity of such groups by integrating environmental, phenological, morphometric, and palynological data; applying uni- and multivariate tests; and evaluating the conservation status of each taxon. Our results support the recognition of two morphological groups within Metternichia, largely in agreement with the original circumscription of the varieties. Multivariate analyses clearly indicate different ecological niches, with each taxon inhabiting environments with distinct mean annual precipitation and temperature. Phenological data show some differences between the varieties regarding months with the highest number of flowering and fruiting records. In general, M. principis var. macrocalyx presents larger flower and pollen characters, and smaller fruit characters compared to the typical variety. Based on these findings, we elevate the variety to the status of species, as the new combination Metternichia macrocalyx. Following IUCN guidelines, both taxa are here preliminarily considered endangered (EN).

Trolliella Herzog, a new synonym of Pylaisia Schimp. (Pylaisiaceae, Bryophyta) and Pylaisia euendostoma (Herzog) Frank Müll., Jan Kučera & S.He, comb. nov.

ABSTRACT Introduction: Trolliella euendostoma Herzog is the single species of a monospecific genus and we know of no molecular study since its description and we know of only one report since its discovery. Therefore, we decided to compare a recently collected Myanmar specimen with the type material deposited in JE and obtain molecular data from the new material with which to explore the phylogenetic affinities of this species. Methods: In addition to a morphological examination, an analysis of ITS and trnF–trnS sequence data from the newly collected Myanmar specimen of Trolliella euendostoma was carried out. Phylogenetic affinities were assessed using Bayesian inference and maximum likelihood analyses. Results and discussion: Molecular affinities and morphological features of Trolliella euendostoma suggest that the species should be excluded from the Sematophyllaceae and transferred to Pylaisia Schimp. in the Pylaisiaceae. Consequently, we propose the new combination Pylaisia euendostoma (Herzog) Frank Müll., Jan Kučera & S.He, select the lectotype for T. euendostoma, and additionally synonymise Pylaisia kunisawae (Ando) Ochyra (≡ Pylaisiella kunisawae Ando) with P. euendostoma.

Doğu Anadolu Habitatlarından Domuz ayrığı (Dactylis glomerata L.) Türlerinin Moleküler Çeşitliliğinin ve Dağılımının Analizinde Buğday SSR Markerlerinin Uygulanabilirliği

Türkiye is one of the world's nations with the greatest flora diversity in different plants. Moreover, it possesses a high level of plant genetic diversity. Orchardgrass (Dactylis glomerata L.) is one of the most important fodder species used during cool seasons since it is a hardy and perennial plant. The identification of Orchardgrass cultivars is essential for maximizing cultivar utilization, and safeguarding breeders' intellectual property. Dactylis glomerata L. is an allogamous, variable, monospecific genus with multiple subspecies distinguished by morphology, chromosomal count, and distribution. This genus has a single species, Dactylis glomerata L, which is comprised of multiple subspecies whose traits have not been exhaustively characterized. Using DNA assays that evaluated the transferability of nine SSR primers designed for wheat loci, the genetic diversity of 44 orchardgrass genotypes from eight naturally distributed locales in the Eastern Anatolia Area of Türkiye was calculated. On average, 6.78 alleles were discovered for each of the nine SSR primers, for a total of 61 alleles. A total of 54 polymorphic alleles were identified, with an average of 6.78 per primer. Polymorphism information content (PIC) values ranged from 0.320 (WMC96) to 0.626% (XBARC187). The average polymorphism rate of 88.89% suggests a high amount of genetic diversity among all studied genotypes. The average expected heterozygosity (He) ranged between 0.178 (Ağrı) to 0.882 (Erzurum). The genetic separation ranged from 0.01 to 0.66. In conclusion, our findings indicate that the Dactylis glomerata L genotypes gathered in Eastern Anatolia are a rich source of genetic variability, supplying a vast array of genetic material for orchardgrass breeding efforts.

Chromosomal observations on Eliea (Hypericaceae), a monospecific Madagascar endemic

A meiotic chromosome number of n=9 is reported for Eliea articulata, a monospecific genus of Hypericaceae endemic to Madagascar. This first report for the genus is a new number for the small tribe Cratoxlyeae which includes only one other genus, Cratoxylum. A hypothetical scenario for the origin of n=9 is provided in the context of known chromosome numbers for Cratoxylum and the two other tribes in the Hypericaceae. Given that x=12 has been proposed as the basic chromosome number for the family with numbers of n=11 and n=10 also reported for related species and genera, n=9 appears to have arisen as a descending dysploid from these higher numbers. Field photos of Eliea articulata are provided along with a distribution map and camera lucida drawings of meiotic chromosome figures.

A new species of the bark louse genus Paramanicapsocus (Insecta, Psocodea, Manicapsocidae) from mid-Cretaceous Burmese amber.

A new fossil psocodean species of the previously monospecific genus Paramanicapsocus is described from Burmese amber, namely Paramanicapsocus xingyuei sp. n.. This new species can be distinguished from the other species P. longiantennatus based on the hindwing vein M two-branched and the female gonapophyses with robust external valves.