Brommella sejuncta 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 : 165-169

publication ID	https://doi.org/ 10.11865/zs.201711
publication LSID	lsid:zoobank.org:pub:AB92E114-07FF-41A5-AF24-DF04F8232CA5
persistent identifier	https://treatment.plazi.org/id/039E87CA-9740-FF95-FF73-7FDF6B72F80D
treatment provided by	Diego
scientific name	Brommella sejuncta Li
status	sp. nov.

Treatment

Brommella sejuncta Li View in CoL , sp. nov. ( Figs 38–39 View Figure 38 View Figure 39 , 97 View Figure 97 )

Type material. Holotype. Female, China, Guangxi, Hechi City , Fengshan County, Fengcheng Town , Songren Village , Xi’an Cave , 24°33.941´N, 107°02.465´E, elev. 574 m, 12 March 2007, Y. Lin & J. Liu leg., deposited in IZCAS. GoogleMaps

Etymology. The specific name is derived from the Latin word “ sejunctus ”, meaning “separated”, and refers to the separated sclerotized lateral lob rims of the female epigynum; adjective.

Diagnosis. Females of this new species are most similar to Brommella yizhouensis Li , sp. nov. ( Figs 57–61 View Figure 57 View Figure 58 View Figure 59 View Figure 60 View Figure 61 ), but can be distinguished by the separated lateral lob rims (fused in B. yizhouensis Li , sp. nov.), the extremely short copulatory ducts (slender and twisted tightly in B. yizhouensis Li , sp. nov.), the large and pear-shaped spermathecae.

Description. Female (holotype). Total length 2.20 ( Figs 39C–D View Figure 39 ). Prosoma length 0.93, width 0.75. Cephalic area width

0.45. Carapace pyriform, cephalic part relatively flat, covered with several setae. Thoracic part yellow, fovea reduced, carapace margin distinct. No eyes. Chelicerae length 0.43, width 0.20. Chelicerae with distinct lateral condyles, 3 promarginal and 5 retromarginal teeth. Chelicerae, labium and gnathocoxae yellow-brown; sternum yellow. Labium length 0.11, width 0.20. Gnathocoxae length 0.30, width 0.16. Sternum length 0.55, width 0.50. Legs yellow. Leg formula IV-I-II- III. Leg measurements: I 3.95 (1.10, 0.40, 1.00, 0.85, 0.60); II 3.69 (1.03, 0.33, 0.88, 0.85, 0.60); III 3.39 (1.00, 0.30, 0.75, 0.80, 0.54); IV 4.15 (1.14, 0.33, 1.00, 1.05, 0.63). Ratio Cl/Met IV = 0.25, with 7 curved setae. Opisthosoma length 1.25, width 0.85. Opisthosoma pale, without distinct pattern. Cribellum narrow, undivided.

Epigynum ( Figs 38 View Figure 38 , 39A–B View Figure 39 ). Width 0.24. Spermathecae pear-shaped, can be easily seen in ventral view. Copulatory ducts very short, not observable in dorsal view. Fertilization duct long, medially attached at base of spermathecae.

Male. Unknown.

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