Karschia (Karschia) wenquan Fan, Zhang & Zhang, 2024, sp. nov.
Year: 2024
Type: other
Abstract: Karschia (Karschia) wenquan sp. nov. Figures 1, 2F, 7–10, 11C, D. Type material. Holotype ♂ (MHBU-Sol-2024XJ-01), CHINA, Xinjiang Uygur Autonomous Region, Bortala Mongol Autonomous Prefecture, Wenquan County, Zalemut Town, 44.9463°N, 80.6248°E, altitude 1809 m, 1.VIII.2024, leg. Wenlong Fan. Paratypes 1♂ (MHBU-Sol-2024XJ-02), 1♀ (MHBU-Sol-2024XJ-03), same data as holotype. Additional material examined. 2 juveniles, same data as holotype. Etymology. This species is named after Wenquan County, which is the type locality, and where all specimens were collected. Diagnosis. Karschia (Karschia) wenquan sp. nov. belongs to the subgenus Karschia (Karschia) by absence of hornlike process on male fixed finger (Figs. 8A–C, 10A–C). In various respects, males of K. (K.) wenquan sp. nov. most closely resemble those of K. (K.) birulae among species in this subgenus. These include that the fixed finger mucron is markedly long, similarly shaped in males of both species and a dorsal crest is not present in either (Figs. 8A, 10A), besides both not fringed flagellum, and the basal peg of flagellum moderately inflated (Figs 8C, 10C). K. (K.) wenquan sp. nov. can be recognized by the presence of the moveable finger MSM tooth and MSP tooth (regardless of sex or maturity of the specimens); in contrast, male of K. birulae without the MSM tooth and MSP tooth (Figs 8A, 10A). Furthermore, K. (K.) wenquan sp. nov. with more spiniform setae on the pedipalpal metatarsus (ten, four fallen off) (six in K. birulae), with small papillae on the pedipalpal tarsus (K. (K.) birulae without papillae), and with more ctenidia on sternite IV (K. (K.) wenquan sp. nov. with 17, but K. (K.) birulae only with 10 ctenidia) (Fig. 11D). Females can be diagnosed by the genital operculum, which, although typically triangular-shaped, but differs from K. (K.) birulae by has clear demarcation between the genital plates, while the genital opening not visible between, nor distal to the genital plates (Figs 9F, 10H), and distal to the genital plates not heavily chitinized (K. (K.) birulae genital opening visible distal to the genital plates, and distal to the genital plates heavily chitinized). Otherwise, females have more long (i.e. reaching the posterior border of the adjacent sternite), needle-like ctenidia on sternite IV (K. (K.) birulae with 10 ctenidia, but K. (K.) wenquan sp. nov. with 19 ctenidia) (Figs 9G, 10I). Description. Male (holotype). Measurements. Metric data as in Table 1. Radio: A/CP: 7.48; CL/ CH: 3.07. Colour (Figs 7A, B). Propeltidium color predominantly yellowish-brown, with deep yellowish-brown median sulcus; ocular tubercle all dark. Chelicerae with manus predominantly bright yellow, with some black areas and three black longitudinal stripes in retrolateral view; limits between the setose and asetose areas often darkened; fingers reddish-brown, especially on the teeth. Meso-, metapeltidium and dorsal surface of opisthosoma yellowish-green, tergites dark. Ventral surface of opisthosoma yellowish-green, sternite color darkens with black spots on both sides. Ventral surface of prosoma uniformly faint yellow, sternum lighter than coxae. Pedipalps and legs yellow to brown; pedipalps progressively become darker towards the apex, such that the tarsus is nearly black. Malleoli whitish. Propeltidium (Fig. 8D). Propeltidium wider than long (i.e. ratio of PL/PW 0.67), with very thin, filiform setae and some bifurcated tip setae of different sizes perpendicular to the surface of the propeltidium; propeltidium with slight concave median sulcus. Ocular tubercle with three anterior medial spiniform setae, and one central medial spiniform seta. The interocular distance larger than the length of the eyes. Cheliceral dentition and processes (Figs 8A, B, 10A, B). Fixed finger with median teeth series comprising three primary teeth (FP, FM and FD), graded as FD<FP
Authors: Fan, Wenlong, Zhang, Chao, Zhang, Feng
Institution: Hebei University
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6967935843
Cites:
Cited by:
Related to: