Heterothele erdosi, a new species of Heterothele Karsch, 1879 from Nigeria (Araneae: Theraphosidae)

We describe a new species of giant crab spider of the genus Sadala Simon, 1880 collected in Lowland Evergreen rainforests at the Tiputini Biodiversity Station, Yasuni Biosphere Reserve, Amazonian Ecuador. This new species corresponds to the first record of the genus from Ecuador. Females of the new species of Sadala are similar to S. punicea and S. nanay, by having the epigyne with a median septum diamond‐shaped posteriorly. The new species is easily distinguished from S. punicea and S. nanay by having relatively straight anterior lateral margins of the median septum. This study increases to 10 the number of described species of Sadala.

A new species of the uloborid spider, Octonoba yoshidai, is described using the specimens collected in Takarajima Is., the Tokara Isls., Japan. This new species can be distinguished from Octonoba grandiconcava by epigynum having posterior projection, or the shape of median apophysis bulb of male palp.

Proceedings of the Zoological Society of LondonVolume 66, Issue 4 p. 890-900 On new Species of Spiders from Trinidad, West Indies Frederick O. Pickard Cambridge B.A., Frederick O. Pickard Cambridge B.A.Search for more papers by this author Frederick O. Pickard Cambridge B.A., Frederick O. Pickard Cambridge B.A.Search for more papers by this author First published: November 1898 https://doi.org/10.1111/j.1096-3642.1898.tb03191.xCitations: 7AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume66, Issue4November 1898Pages 890-900 RelatedInformation

Eleven new species of spiders are described in this paper. Most of the species were collected from Poona District, Maharashtra, and one species collected from Mussoorie, U.P., India. The new species belong to seven genera distributed in the family Thomisidae.

Three species of spiders from Gujarat, India, are described in this paper, of which Selenops sumitrae, sp. nov. belongs to the family Selenopidae and Heteropoda phasma Simon and H. bhaikakai, sp. nov. belong to the family Heteropodidae. Characters of the genera Selenops Latreille and Heteropoda Latreille are given.

Selenocosmia jiafu (S. jiafu) has been recently identified as a new species of spider in China. It lives in the same habitat as various other venomous spiders, including Chilobrachys jingzhao (C. jingzhao), Selenocosmia huwena (S. huwena), and Macrothele raveni (M. raveni). The venom from these different species of spiders exhibits some similarities and some differences in terms of their biochemical and electrophysiological properties. With the objective to illustrate the diversity in venom peptide toxins and to establish the evolutionary relationship between different spider species, we first performed transcriptomic analysis on a cDNA library from the venom gland of S. jiafu. We identified 146 novel toxin-like sequences, which were classified into eighteen different superfamilies. This transcriptome was then compared with that of C. jingzhao, which revealed that the putative toxins from both spider venoms may have originated from the same ancestor, although novel toxins evolved independently in the two species. A BLAST search and pharmacological analysis revealed that the two venoms have similar sodium channel modulation activity. This study provides insights into the venom of two closely related species of spider, which will prove useful towards understanding the structure and function of their toxins.

Eleven new spider species (Arachnida: Araneae) for Switzerland discovered in vineyards in Ticino – what are possible reasons?

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(1864). IV.—Descriptions of seven new species of East-Indian spiders received from the Rev. O. P. Cambridge. Annals and Magazine of Natural History: Vol. 14, No. 79, pp. 36-45.

A new species of Mouse Spider (family Actinopodidae Simon, 1892), Missulena harewoodi, is described from near the City of Kalgoorlie-Boulder in the Goldfields region of Western Australia. It differs from all other Missulena species by the unusual light grey colouration of the abdomen in combination with small body size and shiny carapace. A phylogenetic analysis of a fragment (658 bp) of the COI barcoding gene places M. harewoodi sp. n. in a clade with four Missulena species from the Pilbara region of Western Australia, more than 900 km away. Missulena harewoodi sp. n. is one of the many species in this genus that are currently only known from a single, or a very limited number of specimen, highlighting the paucity of fauna collections in many arid regions of Australia and the difficulties in sampling these cryptic spiders.

BackgroundThe spider family Leptonetidae Simon, 1890 includes 20 genera and 366 species from North America, the Mediterranean Region and Asia. Currently, 132 species belonging to six genera have been recorded in China.New informationA new genus and species of leptonetid spiders, Yueleptonetadongxing gen. et sp. n., is described from Guangdong Province, China. Yueleptoneta gen. n. is distinct from the other genera in the chelicerae having the stridulatory file on the lateral margin and the male palp having a tarsal spur, lacking strong spines or apophyses on the femur and tibia.

The spider family Ctenidae Keyserling, 1877 has a worldwide distribution with 580 species belonging to 49 genera, of which 109 species of six genera are distributed in Southeast Asia. Four new species of ctenid spiders are described from Southeast Asia: Anahitamenglun sp. n. (Yunnan, China), Bowiehaiphong sp. n. (Hai Phong, Vietnam), Bowiemengla sp. n. (Yunnan, China) and Bowiezhengi sp. n. (Yunnan, China). In addition, the female of Sinoctenuszhui Marusik, Zhang & Omelko, 2012 (Hainan, China) is described for the first time.

We describe five new species of mouse spiders, genus Missulena Walckenaer, 1805 (family Actinopodidae Simon, 1892), from national parks and / or conservation reserves in Western Australia, based on somatic and genitalic characteristics, and molecular data where these were available: Missulena durokoppin sp. nov., M. gelasinos sp. nov., M. ignea sp. nov., M. minima sp. nov., and M. terra sp. nov. Three of these species, M. ignea sp. nov., M. durokoppin sp. nov., and M. minima sp. nov have very limited known distributions, being known only from a single park or reserve.

The spider theridiid genus Cryptachaea Archer (1946) include today 112 species distributed in tropical and temperate regions worldwide. These spiders are attacked by Ichneumonidae parasitoids of the Polysphincta group of genera. In one of the remaining Atlantic Forest areas of the state of the Cear, Brazil, we recorded the spider Cryptachaea pacoti sp. nov. (Theridiidae) being parasitized by the wasp Zatypota riverai Gauld, 1991 (Hymenoptera: Ichneumonidae). In this study we describe the new spider species C. pacoti. sp. nov. (Theridiidae); an unknown interaction between the parasitoid wasp Z. riverai (Hymenoptera: Ichneumonidae) and the spider C. pacoti sp. nov., and the correlation of abiotic factors (temperature and precipitation) on the temporal variation of the parasitism rate and total abundance of C. pacoti spiders. Our study reveals that parasitoidism is more frequent between the months of May and April and that the parasitoidism rate correlates negatively with temperature, but positively with precipitation. Although we quantified parasitized and non-parasitized spiders, we did not systematically record the life stages of all collected individuals. However, observations during the sampling period indicated that only adult and subadult spiders were parasitized, suggesting possible wasp selectivity for more developed stages of the host spider. These patterns may reflect a synchronization between the life cycles of the host and the parasitoid, influenced by the regions humid microclimate in contrast to the surrounding semiarid environment. Precipitation did not correlate with the total abundance of spiders, but temperature negatively correlated with both spider abundance and parasitism rate, likely due to changes in microhabitat structure and wasp reproductive dynamics. The spiders likely exhibit seasonal abundance patterns related to forest formation type. While Cear is largely characterized by the Caatinga biome's dry and hot climate, the Brejos de Altitude function as humid refuges with milder microclimates, greater vegetation cover, and high moisture retention, promoting more stable arthropod communities throughout the year.

Evaluar la diversidad de arañas es necesario para la conservación de la naturaleza ya que cumplen un rol importante en los ecosistemas como reguladoras de las poblaciones de insectos y son buenas indicadoras de calidad ambiental. La reserva contemplada en este estudio es singular dentro de la llanura del Espinal debido a sus afloramientos rocosos, que contienen una gran diversidad de especies, varias de ellas de carácter endémico. Los objetivos de este trabajo fueron crear un inventario, describir la diversidad taxonómica y funcional del orden Araneae en bosques y pastizales en función de las estaciones climáticas. Los muestreos se realizaron mediante tamizado de hojarasca, golpeteo de follaje, aspirado de pastizal y captura directa nocturna. Para cada ambiente se calcularon índices de diversidad alfa y beta temporal y se probó el modelo de distribución de abundancia. Se identificaron 224 especies/morfoespecies. Theridiidae fue la familia con mayor riqueza y el gremio Constructoras de Telas Orbiculares el más abundante. Los índices de diversidad, dominancia y equidad mostraron diferencias significativas entre las estaciones cálidas y frías para bosques y pastizales, la distribución de abundancia de las especies se ajustó al modelo de distribución log-normal y la similitud de especies entre estaciones no superó el 41 %. Los resultados de este estudio aportan datos preliminares sobre los patrones estacionales de la comunidad de Araneae. Se reportan nuevas especies de arañas para Argentina, muchas ellas con registros escasos y aislados en Sudamérica, así como especies de importancia ecológica.