Ptocasius umbellulatus Yang & Peng 2023, sp. nov.
Creators: name: Yang, Su-Fang
name: Peng, Xian-Jin
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Ptocasius
Ptocasius umbellulatus

description: Ptocasius umbellulatus sp. nov.
urn:lsid:zoobank.org:act: A7702891-DDE2-4044-BFB8-298276C98381
Figs 34–35, 45
Diagnosis
The new species resembles P. davidi sp. nov. (Figs 8–9), but can be distinguished by: (1) anterior interval of copulatory openings slightly wider than posterior interval in ventral view (Figs 34B, 35A), while three times as wide as posterior interval in P. davidi (Figs 8B, 9A); (2) posterior margin of pockets almost two times as wide as long in ventral view (Figs 34B, 35A), while almost as long as wide in P. davidi (Figs 8B, 9A); (3) copulatory ducts L-shaped in ventral view (Figs 34B, 35A), while S-shaped in P. davidi (Figs 8B, 9A).
Etymology
The specific name is derived from the combination of the Latin noun ‘ umbella ’ (‘parasol’) and the adjective ‘ latus ’ (‘broad’), referring to the form of the pockets and copulatory tube.
Type material
Holotype
CHINA • ♀; Yunnan Province, Nujiang Prefecture, Gongshan County, Nujiang State Nature Reserve, Qiqi, 9.9 km West of Gongshan; 27°42′55″ N, 98°33′55″ E; 2000 m a.s.l.; 9–14 Jul. 2000; Heng-mei Yan, David Kavanaugh, Charles Griswold, Hong-bin Liang, Darrell Ubick and Da-zhi Dong leg.; HNU-00–QF–9A.
Paratypes (25 ♀♀)
CHINA – Yunnan Province • 1 ♀; same collection data as for holotype; HNU-00–QF–10P • 1 ♀; 0.4 km Southeast from Shibali, guesthouse; 27°09′48″ N, 98°46′55″ E; 2475 m a.s.l.; 5 May 2004; Charles Griswold and David Kavanaugh leg.; HNU-CGY30 • 5 ♀♀; Gongshan County, Dulongjiang Township, Mokewang bridge; 27º50′17″ N, 98º19′15″ E; 1455 m a.s.l.; 6–7 Nov. 2004; Guo Tang leg.; HNUTang–04–08 • 1 ♀; Gongshan County, Dabadi of new road; 27º28′30″ N, 98º18′04″ E; 3013 m a.s.l.; 12 Nov. 2004; Guo Tang leg.; HNU-Tang–04–11 • 2 ♀♀; Gongshan County, Heiwadi of new road; 27º28′15″ N, 98º21′19″ E; 1850 m a.s.l.; 13–16 Nov. 2004; Guo Tang leg.; HNU-Tang–04–12B • 4 ♀♀; Lushui County, Pianma Township, Chanyan He, 9.3 km Southeast of Pianma; 25°59′37″ N, 98°39′59″ E; 2470 m a.s.l.; 14 May 2005; Charles Griswold leg.; mixed broadleaf deciduous and evergreen forest; beating understory vegetation; HNU-CGY107 • 1 ♀; Tengchong County, Jietou Township, Datang Village, Daheling Ganjiao camping site; 25°25′39″ N, 98°24′46″ E; 1952 m a.s.l.; 20 May 2006; Xin-ping Wang and Peng Hu leg.; HNU-Wang060520 • 3 ♀♀; Longling County, Longjiang Township, Xiaoheishan Nature Reserve (Guchengshan Mountain); 24º49′43″ N, 98º45′33″ E; 2010 m a.s.l.; 26 May 2005; Heng-mei Yan leg.; in the forest; HNU-GKJ026–3 • 2 ♀♀; Fugong County, Lumadeng Township, Yakou of old Shibali; 27º03′51″ N, 98º45′04″ E; 3270 m a.s.l.; 13 Aug. 2005; Guo Tang leg.; HNUTang–05–06A • 1 ♀; Tengchong County, Qushi Township, Daba Village; 25°17′13″ N, 98°42′10″ E; 2170 m a.s.l.; 14 May 2006; Chang-min Yin, Jia-fang Hu and Ming-wei Yang leg.; HNU-YHY01 • 1 ♀; Tengchong County, Mingguang Township, Zizhi Village; 25°46′57″ N, 98°36′58″ E; 2200 m a.s.l.; 21 May 2006; leg Ming-wei Yang leg.; HNU-YHY10 • 1 ♀; Gongshan County, Du Longjiang Township, Maku; 27º41′07″ N, 98º18′15″ E; 1814 m a.s.l.; 28 Aug. 2006; Peng Hu leg.; HNU-Hu060828 • 1 ♀; Gongshan County, Dulongjiang Township, Maku; 27º40′42″ N, 98º17′50″ E; 1970 m a.s.l.; 30 Aug. 2006; Peng Hu leg.; HNU-Hu060830 • 1 ♀; Gongshan County, Dulongjiang Township, Maku; 27º41′09″ N, 98º17′47″ E; 2097 m a.s.l.; 2 Sep. 2006; Peng Hu leg.; HNU-Hu060902–2.
Description
Female (holotype)
BODY AND HEAD. Total length 5.80. Prosoma 2.10 long, 1.60 wide. Opisthosoma 3.70 long, 2.20 wide. Clypeus height 0.10. Carapace (Fig. 34A) light brown, carapace margin and eyes base black; with a pair of dark longitudinal bands extending from back of ALE to retromargin of carapace; ocular area covered with sparse long black hairs, lateral margins black. Fovea reddish brown, longitudinal bar-shaped. Radial groove distinct; ocular area sparsely covered with long black hairs. Eye diameter and interdistances: AME 0.50, ALE 0.25, PLE 0.25, AERW 1.45, PERW 1.35, EL 0.90. Sternum scutiform, covered with fine grayish black hairs; the median area slightly bulged, greenish brown; margin grayish brown. Clypeus light brown with long brown hairs covering the area between the AMEs and a row of long white hairs covering the promargin. Endites and labium light brown, distal area covered with grayish black hairs.
CHELICERAE (Fig. 35C). Brown, distal area covered with dense long dark brown hairs; two promarginal teeth and one retromarginal denticle.
LEGS. Yellowish brown to dark brown, annuli grayish black; spines short. Tibiae I and II with three pairs of long ventral spines, metatarsi I and II with two pairs of long ventral spines.
LEG MEASUREMENTS. I = 3.65 (1.15, 1.50, 0.50, 0.50), II = 3.40 (1.10, 1.30, 0.50, 0.50), III = 4.10 (1.30, 1.30, 0.80, 0.70), IV = 4.60 (1.40, 1.50, 0.90, 0.70). Leg formula: IV–III–I–II.
ABDOMEN (Fig. 34A). Long ovoid, dorsum light yellow; each side with a grayish black longitudinal band and black twills; the posterior portion with three grayish black herring bones, the posterior end with a grayish black spot; with two pairs of small, reddish brown sigillae; ventral light yellow; the median area with a grayish black longitudinal band, sides with irregular grayish black markings and twills. Spinnerets dark brown.
EPIGYNUM (Figs 34B–C, 35A–B). As long as wide; the pockets present below, relatively diverging from copulatory openings, posterior margin of pockets almost two times as wide as long; copulatory openings V-shaped; copulatory ducts L-shaped in ventral view.
Male
Unknown.
Distribution
China (Yunnan Province, Fig. 45).
description: Published as part of Yang, Su-Fang & Peng, Xian-Jin, 2023, A review of the Ptocasius Simon, 1885 spiders of Gaoligong Mountains, China (Araneae: Salticidae), pp. 1-61 in European Journal of Taxonomy 903 (1) on pages 47-50, DOI: 10.5852/ejt.2023.903.2321, http://zenodo.org/record/10119638