Browse
Submit Data
Databases
API
Help

Dataset Information

23 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Meotipa species (Araneae, Theridiidae) from China

ABSTRACT: Abstract In an ongoing effort to expand knowledge of the Chinese cobweb spider fauna (Theridiidae), the genus Meotipa Simon, 1894 is reviewed. Two new species are described, Meotipapseudopicturatasp. nov., Meotipastriatasp. nov., and five known species are redescribed: Meotipaargyrodiformis (Yaginuma, 1952), Meotipapulcherrima (Mello-Leitão, 1917), Meotipapicturata Simon, 1895, Meotipaspiniventris (O. Pickard-Cambridge, 1869), and Meotipavesiculosa Simon, 1895.

SUBMITTER: Deng Z

PROVIDER: S-EPMC8794957 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

Two new spider species of the genus Chrysso O. P.-Cambridge, 1882 (Araneae, Theridiidae) in Hainan Island, China.

Project description:Two new spider species of the genus Chrysso O. P.-Cambridge, 1882 are reported from Hainan Island, China, Chrysso bifurcasp. n. (male, female) and Chrysso bicuspidatasp.n. (male, female). Chrysso bimaculata Yoshida, 1998is recorded from China for the first time.

| S-EPMC3349065 | biostudies-literature

New species of smiley-faced spider Spintharus (Araneae, Theridiidae) from Brazil, and comments on unobserved diversity in South America.

Project description:Spintharus is a genus of spiders that contained only two species until 2018 when it was demonstrated that a 'widespread' species was instead composed of multiple short-range endemics. This note redescribes Spintharus gracilis Keyserling and describes a new species of Spintharus (Araneae, Theridiidae), S. leverger sp. nov., both based on specimens from Brazil. We also examine specimens from several additional localities in Brazil displaying variation consistent with patterns previously found within the Caribbean: geographically isolated and unique localities may contain independent species lineages. Given the limited number of specimens, profuse variation, and lack of DNA data from museum specimens, it is challenging to gauge the number of species in the observed material. Instead of describing these as new species here, we highlight this variation and hypothesize that in South America, a greater diversity of the genus across the geographical landscape will be found than predicted based on Levi's "widespread Spintharus flavidus" hypothesis. Our results suggest that continental efforts to sample the genus would be profitable, as this charismatic group likely harbors unappreciated diversity throughout the continent.

| S-EPMC7052027 | biostudies-literature

Chromosome mapping of dragline silk genes in the genomes of widow spiders (Araneae, Theridiidae).

Project description:With its incredible strength and toughness, spider dragline silk is widely lauded for its impressive material properties. Dragline silk is composed of two structural proteins, MaSp1 and MaSp2, which are encoded by members of the spidroin gene family. While previous studies have characterized the genes that encode the constituent proteins of spider silks, nothing is known about the physical location of these genes. We determined karyotypes and sex chromosome organization for the widow spiders, Latrodectus hesperus and L. geometricus (Araneae, Theridiidae). We then used fluorescence in situ hybridization to map the genomic locations of the genes for the silk proteins that compose the remarkable spider dragline. These genes included three loci for the MaSp1 protein and the single locus for the MaSp2 protein. In addition, we mapped a MaSp1 pseudogene. All the MaSp1 gene copies and pseudogene localized to a single chromosomal region while MaSp2 was located on a different chromosome of L. hesperus. Using probes derived from L. hesperus, we comparatively mapped all three MaSp1 loci to a single region of a L. geometricus chromosome. As with L. hesperus, MaSp2 was found on a separate L. geometricus chromosome, thus again unlinked to the MaSp1 loci. These results indicate orthology of the corresponding chromosomal regions in the two widow genomes. Moreover, the occurrence of multiple MaSp1 loci in a conserved gene cluster across species suggests that MaSp1 proliferated by tandem duplication in a common ancestor of L. geometricus and L. hesperus. Unequal crossover events during recombination could have given rise to the gene copies and could also maintain sequence similarity among gene copies over time. Further comparative mapping with taxa of increasing divergence from Latrodectus will pinpoint when the MaSp1 duplication events occurred and the phylogenetic distribution of silk gene linkage patterns.

| S-EPMC2943472 | biostudies-literature

Two new Mallinella species from southern China (Araneae, Zodariidae).

Project description:Two new species of the spider genus Mallinella Strand, 1906 are reported from China: Mallinella sphaerica sp. n. (male, female) from Tianmu Mountain, Zhejiang Province and Mallinella pluma sp. n. (male) from Daming Mountain, Guangxi Zhuang Autonomous Region.

| S-EPMC3689113 | biostudies-literature

Structural origins of coloration in the spider Phoroncidia rubroargentea Berland, 1913 (Araneae: Theridiidae) from Madagascar.

Project description:This study investigates the structural basis for the red, silver and black coloration of the theridiid spider, Phoroncidia rubroargentea (Berland, 1913) from Madagascar. Specimens of this species can retain their colour after storage in ethanol for decades, whereas most other brightly pigmented spider specimens fade under identical preservation conditions. Using correlative optical, structural and chemical analysis, we identify the colour-generating structural elements and characterize their optical properties. The prominent silvery appearance of the spider's abdomen results from regularly arranged guanine microplatelets, similar to those found in other spiders and fish. The microplatelets are composed of a doublet structure twinned about the [[Formula: see text]] axis, as suggested by electron diffraction. The red coloration originates from chambered microspheres (approx. 1 µm in diameter), which contain structured fluorescent material. Co-localization of the red microparticles on top of the reflective guanine microplatelets appears to enhance the red coloration. The spider's thick cuticular layer, which encases its abdomen, varies in its optical properties, being transparent in regions where only guanine reflectors are present, and tanned, exhibiting light absorption where the red microspheres are found. Moreover, colour degradation in some preserved spider specimens that had suffered damage to the cuticular layer suggests that this region of the exoskeleton may play an important role in the stabilization of the red coloration.

| S-EPMC5832734 | biostudies-literature

New species of Pseudopoda Jager, 2000 from Southern China (Araneae, Sparassidae).

Project description:Four new species of the huntsman spider genus Pseudopoda Jäger, 2000 are described from Southern China: Pseudopoda acuminata sp. n. from Suiyang County, Guizhou Province, P. emei sp. n. from Emei Mountain, Sichuan Province, P. lacrimosa sp. n. from Fugong County and Tengchong County, Yunnan Province, and P. robusta sp. n. fromJinyun Mountain, Chongqing Municipality.

| S-EPMC3867119 | biostudies-other

Expression profile of genes encoding allatoregulatory neuropeptides in females of the spider Parasteatoda tepidariorum (Araneae, Theridiidae).

Project description:Allatoregulatory neuropeptides are multifunctional proteins that take part in the synthesis and secretion of juvenile hormones. In insects, allatostatins are inhibitors of juvenile hormone biosynthesis in the corpora allata while allatotropins, act as stimulators. By quantitative real-time PCR, we analyzed the gene expression of allatostatin A (PtASTA), allatostatin B (PtASTB), allatostatin C (PtASTC), allatotropin (PtAT) and their receptors (PtASTA-R, PtASTB-R, PtASTC-R, PtAT-R) in various tissues in different age groups of female spiders. In the presented manuscript, the presence of allatostatin A, allatostatin C, and allatotropin are reported in females of the spider P. tepidariorum. The obtained results indicated substantial differences in gene expression levels for allatoregulatory neuropeptides and their receptors in the different tissues. Additionally, the gene expression levels also varied depending on the female age. Strong expression was observed coinciding with sexual maturation in the neuroendocrine and nervous system, and to a lower extent in the digestive tissues and ovaries. Reverse trends were observed for the expression of genes encoding the receptors of these neuropeptides. In conclusion, our study is the first hint that the site of synthesis and secretion is fulfilled by similar structures as observed in other arthropods. In addition, the results of the analysis of spider physiology give evidence that the general functions like regulation of the juvenile hormone synthesis, regulation of the digestive tract and ovaries action, control of vitellogenesis process by the neuropeptides seem to be conserved among arthropods and are the milestone to future functional studies.

| S-EPMC6736302 | biostudies-literature

Three new species of the genus Zodarion (Araneae, Zodariidae) from China.

Project description:Three new species of the genus Zodarion Walckenaer, 1826, from China, are described as Zodarionapertum sp. n. (??, from Xinjiang), Z.planum sp. n. (?, from Shaanxi), and Z.ovatum sp. n. (??, from Yunnan).

| S-EPMC6331517 | biostudies-literature

On ten species of jumping spiders from Xishuangbanna, China (Araneae, Salticidae).

Project description:Nine new species of jumping spiders from Xishuangbanna Tropical Botanical Garden are described: Euochinyaoi sp. nov. (♀♂), Laufeiabanna sp. nov. (♀♂), Marengotangi sp. nov. (♀♂), Myrmarachneliui sp. nov. (♀♂), Nandiciusproszynskii sp. nov. (♂), Phintelloidespengi sp. nov. (♀♂), Poecilorchesteszhengi sp. nov. (♀♂), Rhenewandae sp. nov. (♂) and Simaethacheni sp. nov. (♀♂). The female of Chinattusinflatus Wang & Li, 2020 is described for the first time.

| S-EPMC8530996 | biostudies-literature

Seven new species of jumping spiders (Araneae, Salticidae) from Xishuangbanna, China.

Project description:Seven new species of jumping spiders collected from Xishuangbanna Tropical Botanical Garden in Yunnan, China, are diagnosed and described: Charippus yinae sp. nov. (♂♀), Chinattus inflatus sp. nov. (♂), Indomarengo yui sp. nov. (♂), Phintella banna sp. nov. (♂♀), P. mii sp. nov. (♂♀), Simaetha menglun sp. nov. (♂♀) and S. pengi sp. nov. (♂♀). Charippus yinae sp. nov. is the second species of the genus Charippus Thorell, 1895, which was previously known only from one sex.

| S-EPMC7511456 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data