Brommella casseabri Li, 2017

Li, Shuqiang & Wang, Xiaoxiao, 2017, New cave-dwelling spiders of the family Dictynidae (Arachnida: Araneae) from Guangxi and Guizhou, China, Zoological Systematics 42 (2), pp. 125-228 : 133-135

publication ID	https://doi.org/ 10.11865/zs.201711
publication LSID	lsid:zoobank.org:pub:AB92E114-07FF-41A5-AF24-DF04F8232CA5
DOI	https://doi.org/10.5281/zenodo.5459559
persistent identifier	https://treatment.plazi.org/id/039E87CA-9760-FFB3-FF73-7F6A6B72F9A6
treatment provided by	Diego
scientific name	Brommella casseabri Li
status	sp. nov.

Treatment

Brommella casseabri Li View in CoL , sp. nov. ( Figs 7–8 View Figure 7 View Figure 8 , 97 View Figure 97 )

Type material. Holotype. Female, China, Guangxi, Guilin City , Xing’an County, Dayan Village , Dayan Cave , 25°34.263´N, 110°36.594´E, elev. 355 m, 12 July 2009, C. Wang & Z. Yao leg., deposited in IZCAS GoogleMaps . Paratype. 1 female, same data as holotype, deposited in IZCAS GoogleMaps .

Etymology. The specific name is derived from abbreviation of the Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences ( CAS-SEABRI); noun in apposition. The name is dedicated to its three-part mission, viz., (a) Serve China’s “the Silk Road Economic Belt and the 21st Century Maritime Silk Road” initiative; (b) Integrate efforts by CAS and international institutes to organize professional research groups and train researchers in Southeast Asian countries; and (c) Provide support to all domestic and international partners.

Diagnosis. Females of this new species are similar to B. punctosparsa (Song, Zhu & Chen, 1999: 363, figs 213K–N), but can be distinguished by the circinate copulatory ducts (copulatory ducts in circular coils in B. punctosparsa ).

Description. Female (holotype). Total body length 2.00 ( Figs 8C–D View Figure 8 ). Prosoma length 0.85, width 0.75. Cephalic region width 0.40. Carapace pyriform, dorsal shield of prosoma yellow-brown, cephalic region relatively flat, covered with several setae, fovea reduced, cervical groove indistinct. Six eyes, AME reduced to small pigment spots, all eyes white, encircled with black, PER slightly procurved from dorsal view. Eye sizes and interdistances: ALE 0.08, PLE 0.08, PME 0.06; ALE– ALE 0.10, ALE–PLE 0.01, PME–PME 0.07, PME–PLE 0.03. Eye region length 0.15, width 0.26. Clypeus height 0.05. Chelicerae length 0.40, width 0.20. Chelicerae with distinct lateral condyles, 3 promarginal and 3 retromarginal teeth. Labium and gnathocoxae light brown, sternum yellow-brown. Labium length 0.11, width 0.18. Gnathocoxae length 0.18, width 0.15. Sternum length 0.54, width 0.52. Legs yellow-brown. Leg formula I-IV-II-III. Leg measurements: I 3.48 (1.00, 0.33, 0.95, 0.75, 0.45); II 3.03 (0.90, 0.33, 0.75, 0.65, 0.40); III 2.68 (0.75, 0.30, 0.60, 0.63, 0.40); IV 3.38 (1.00, 0.33, 0.85, 0.75, 0.45). Ratio Cl/Met IV=0.44, with 9 setae. Opisthosoma length 1.25, width 1.00. Opisthosoma pale yellow, without distinct pattern. Cribellum narrow, undivided.

Epigynum ( Figs 7 View Figure 7 , 8A–B View Figure 8 ). Width 0.23. Bursae reduced, strongly sclerotized. Spermathecae slightly swollen, almost straight ( Figs 7A View Figure 7 , 8B View Figure 8 ).

Male. Unknown.

Variation. Total body length: females 1.9–2.0 (n = 2).

Distribution. Known only from the type locality ( Fig. 97 View Figure 97 ).