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Bridging the distributional gap of Tyloridastriata (Thorell, 1877) and new synonymy (Araneae: Tetragnathidae).

Kulkarni S, Yadav S - Biodivers Data J (2015)

Bottom Line: Description of Tyloridastellimicans (Simon, 1885) mentions its identity with T.striata, which however characterizes sub-adult of T.striata and is accordingly synonymized.Tyloridastriata is newly recorded from India which links the distributional gap between China to Australia and Comoros Islands.Distributional and taxonomic records of Tylorida species with T.striata- like globose abdomen infer probable synonymy, which is subject to genus revision.

View Article: PubMed Central - PubMed

Affiliation: Biome Conservation Foundation, Pune, 18, Silver Moon Apts.,1/2A/2, Bavdhan Kh.,Pune 411021, India.

ABSTRACT

Background: Although Tyloridastriata has not been reported from India, observations on India Biodiversity Portal (IBP 2015), an open access repository for biodiversity information of Indian subcontinent, showed images resembling this species. The respective locality in Gujarat, India was explored and specimens were studied to confirm record of T.striata in India. Literature study showed some taxonomic lacunae which needed to be resolved.

New information: The tetragnathid spider Tyloridastriata (Thorell, 1877) is redescribed on examination of its long unknown syntypes from Kendari, Southeast Sulawesi deposited in the Natural History Museum of Giacomo Doria, Genoa, Italy and additional material from Kendari and other Indonesian regions. Description of Tyloridastellimicans (Simon, 1885) mentions its identity with T.striata, which however characterizes sub-adult of T.striata and is accordingly synonymized. Tyloridastriata is newly recorded from India which links the distributional gap between China to Australia and Comoros Islands. Distributional and taxonomic records of Tylorida species with T.striata- like globose abdomen infer probable synonymy, which is subject to genus revision.

No MeSH data available.


Related in: MedlinePlus

Map showing distribution of Tylorida species with T.striata-like globose abdomen.
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Figure 1368829: Map showing distribution of Tylorida species with T.striata-like globose abdomen.

Mentions: The new record of T.striata from the Indian peninsula joins the disjunction of this species’ distribution between Comoros Islands and China to Australia (Fig. 4). Interestingly, the species is found on either sides of the Wallace line, thus distributed throughout the two ecozones of Asia (Indo-Malayan & Palearctic) and Australasia. The record from Comoros Islands, which belongs to the Afrotropical ecozone is noteworthy. The wide distribution of T.striata could be attributed to the dispersal and adaptive capacity of this species. On the other hand, Tyloridasataraensis Kulkarni, 2014 is restricted to a smaller part of Western Ghats in India (Kulkarni and Lewis 2015). These distributional variations of species belonging to same genus may suggest contrasting adaptive capacities, since T.striata undoubtedly sustains in anthropogenically exploited habitats whereas, T.sataraensis is a habitat specialist, currently under threat of habitat degradation (Kulkarni 2014, Kulkarni and Lewis 2015). Two other Tylorida species having T.striata-like globose abdomen, Tyloridamornensis (Benoit, 1978) and Tyloridaseriata (Thorell, 1899) are only known from their respective type localities (Fig. 4). Tyloridaseriata has not been reported since its original description from Cameroon whereas T.mornensis was recorded again from its type locality Seychelles and reported as endemic (Saaristo 2003, Saaristo 2010​). Whether this is a natural disjunction, or due to lack of study (Dimitrov et al. 2008​) or a case of synonymy similar to T.stellimicans needs to be resolved, subject to a future genus revision.


Bridging the distributional gap of Tyloridastriata (Thorell, 1877) and new synonymy (Araneae: Tetragnathidae).

Kulkarni S, Yadav S - Biodivers Data J (2015)

Map showing distribution of Tylorida species with T.striata-like globose abdomen.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385902&req=5

Figure 1368829: Map showing distribution of Tylorida species with T.striata-like globose abdomen.
Mentions: The new record of T.striata from the Indian peninsula joins the disjunction of this species’ distribution between Comoros Islands and China to Australia (Fig. 4). Interestingly, the species is found on either sides of the Wallace line, thus distributed throughout the two ecozones of Asia (Indo-Malayan & Palearctic) and Australasia. The record from Comoros Islands, which belongs to the Afrotropical ecozone is noteworthy. The wide distribution of T.striata could be attributed to the dispersal and adaptive capacity of this species. On the other hand, Tyloridasataraensis Kulkarni, 2014 is restricted to a smaller part of Western Ghats in India (Kulkarni and Lewis 2015). These distributional variations of species belonging to same genus may suggest contrasting adaptive capacities, since T.striata undoubtedly sustains in anthropogenically exploited habitats whereas, T.sataraensis is a habitat specialist, currently under threat of habitat degradation (Kulkarni 2014, Kulkarni and Lewis 2015). Two other Tylorida species having T.striata-like globose abdomen, Tyloridamornensis (Benoit, 1978) and Tyloridaseriata (Thorell, 1899) are only known from their respective type localities (Fig. 4). Tyloridaseriata has not been reported since its original description from Cameroon whereas T.mornensis was recorded again from its type locality Seychelles and reported as endemic (Saaristo 2003, Saaristo 2010​). Whether this is a natural disjunction, or due to lack of study (Dimitrov et al. 2008​) or a case of synonymy similar to T.stellimicans needs to be resolved, subject to a future genus revision.

Bottom Line: Description of Tyloridastellimicans (Simon, 1885) mentions its identity with T.striata, which however characterizes sub-adult of T.striata and is accordingly synonymized.Tyloridastriata is newly recorded from India which links the distributional gap between China to Australia and Comoros Islands.Distributional and taxonomic records of Tylorida species with T.striata- like globose abdomen infer probable synonymy, which is subject to genus revision.

View Article: PubMed Central - PubMed

Affiliation: Biome Conservation Foundation, Pune, 18, Silver Moon Apts.,1/2A/2, Bavdhan Kh.,Pune 411021, India.

ABSTRACT

Background: Although Tyloridastriata has not been reported from India, observations on India Biodiversity Portal (IBP 2015), an open access repository for biodiversity information of Indian subcontinent, showed images resembling this species. The respective locality in Gujarat, India was explored and specimens were studied to confirm record of T.striata in India. Literature study showed some taxonomic lacunae which needed to be resolved.

New information: The tetragnathid spider Tyloridastriata (Thorell, 1877) is redescribed on examination of its long unknown syntypes from Kendari, Southeast Sulawesi deposited in the Natural History Museum of Giacomo Doria, Genoa, Italy and additional material from Kendari and other Indonesian regions. Description of Tyloridastellimicans (Simon, 1885) mentions its identity with T.striata, which however characterizes sub-adult of T.striata and is accordingly synonymized. Tyloridastriata is newly recorded from India which links the distributional gap between China to Australia and Comoros Islands. Distributional and taxonomic records of Tylorida species with T.striata- like globose abdomen infer probable synonymy, which is subject to genus revision.

No MeSH data available.


Related in: MedlinePlus