Nuconarius Z. Zhao & S. Li

Li, Bing, Zhao, Zhe, Zhang, Chuntian & Li, Shuqiang, 2018, Nuconarius gen. n. and Hengconarius gen. n., two new genera of Coelotinae (Araneae, Agelenidae) spiders from Southwest China, Zootaxa 4457 (2), pp. 237-263: 239

publication ID

https://doi.org/10.11646/zootaxa.4457.2.2

publication LSID

lsid:zoobank.org:pub:14E0CDBB-CB72-4026-979B-E4BAC3CEA62E

persistent identifier

http://treatment.plazi.org/id/EE5987B9-FFA6-FF99-FF6A-FED4FE9AF9B1

treatment provided by

Plazi

scientific name

Nuconarius Z. Zhao & S. Li
status

 

Genus Nuconarius Z. Zhao & S. Li  gen. n.

Type species. Nuconarius brevipatellatus Z. Zhao & S. Li  sp. n.

Etymology. The generic name is derived from the pinyin word "Nu", referring to the Nujiang river of the Lisu Autonomous Prefecture where the genus is distributed, and "- conarius " from the generic name Draconarius  . The gender is masculine.

Diagnosis. The new genus can be distinguished from other coelotine genera, except Sinodraconarius Zhao & Li, 2018  , Hengconarius Z. Zhao & S. Li  gen. n., and Draconarius  ; from Sinodraconarius  by the patellar apophysis of palp which is not bifurcate and an epigyne without a middle septum; from Hengconarius Z. Zhao & S. Li  gen. n. by the retrolateral tibial apophysis with three branches, the lack of a lateral tibial apophysis and an epigyne without a middle septum; from Draconarius  by the cymbial furrow being less than ½ the length of cymbium, median apophysis not spoon-shaped or absent, epigynal teeth absent, and the spermathecae not convoluted.

Description. Large sized, with total lengths ranging from 8.70 to 14.98. Carapace brown to tan; radial region with short grey-black setae; sternum tan with vertical setae. Abdomen tan to grey. Chelicerae with 3 promarginal and 2 retromarginal teeth. Leg formula 4> 1> 2> 3. Male palp: patellar apophysis small and figure-shaped; retrolateral tibial apophysis with three branches; the cymbial furrow short, less than ½ the length of cymbium; embolic base beginning at 7 to 8 o’clock position; conductor short and bifurcate, without the basal lamella but with a conductor’s dorsal apophysis; median apophysis small, not spoon-shaped or reduced. Epigyne: epigynal teeth absent; atrium located posteriorly, slit-shaped; posterior epigynal sclerite absent; copulatory openings located centrally; copulatory duct indistinct; spermathecae simple; spermathecal heads large, located anteriorly; spermathecal bases separated.

Natural history. All species of Nuconarius Z. Zhao & S. Li  gen. n. were collected from moist and gloomy places in the high mountain forests (3113–3710 m).

Composition. So far only three species are considered in the new genus: N. brevipatellatus Z. Zhao & S. Li  sp. n., N. capitulatus ( Wang, 2003)  comb. n. and N. pseudocapitulatus ( Wang, 2003)  comb. n.

Distribution. Tibet and Yunnan, China ( Fig. 7 View Figure ).

Comments. We analyzed the relationships of coelotine spiders by using 8 genes from 286 species in 19 genera ( Zhao & Li 2017). The molecular topologies supported Nuconarius Z. Zhao & S. Li  gen. n. as a monophyletic group which is closely related to Hengconarius Z. Zhao & S. Li  gen. n., Sinodraconarius  , and the former Draconarius  -clade: ( Draconarius  + ( Hengconarius Z. Zhao & S. Li  gen. n. + ( Nuconarius Z. Zhao & S. Li  gen. n. + Sinodraconarius  ))). For details please see ZZ935, ZZ978 and SD015 (Southern coelotes groups) in figure 3 and supplementary figures S4–S6 of Zhao & Li (2017). Altough the four genera share some common morphological characters like the presence of conductor’s dorsal apophysis and the atrium located posteriorly, Hengconarius Z. Zhao & S. Li  gen. n. can still be distinguished easily from Draconarius  and other related genera by the characters mentioned above.