Irfan, Muhammad, Zhou, Gu-chun, Bashir, Shahida, Mukhtar, Muhammad Khalid & Peng, Xian-jin, 2020, Yuelushannus gen. nov. (Araneae, Linyphiidae) from China, European Journal of Taxonomy 642, pp. 1-17: 3

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gen. nov.

Yuelushannus  gen. nov.


Figs 1–11View FigView FigView FigView FigView FigView FigView FigView FigView FigView FigView Fig

Type species: Yuelushannus barbatus  sp. nov.


The genus is named after the type locality (Yuelu) of the type species. Gender masculine.


Male abdomen with two pairs of sigellae and distinct scutum at anterior two third. ( Figs 6View Fig A–C, 7) as in Ceratinella Emerton, 1882  ( Ono et al. 2009: figs 63–66).The new genus can be differentiated from other genera on the basis of the following characters. Male carapace modified, cephalic pits present, the ocular region with thick spines pointing away from each other. Male palp: distal end of tibia dorsally with two tongue-shaped apophyses, densely covered with teeth ( Figs 6BView Fig, 7BView Fig); embolus simple, sclerotized, very long and thick ( Figs 6View Fig A–C, 7); anterior radical process as long as embolus, with distal frayed end ( Figs 6View Fig A–C, 7). Epigyne: dorsal plate with scapus ( Figs 8–9View FigView Fig) as in Paikiniana Eskov, 1992  ( Zhao & Li 2014: figs 75a–c, 76c–d); copulatory ducts column-shaped; spemathecae present at lateral sides of dorsal plate ( Figs 8–9View FigView Fig).


BODY. Small (1.75–1.9); male cephalic lobe and pits distinct, ocular area with thick spines; female palpal claw absent; AER slightly procurved, PER recurved; both male and female abdomen with four sigillae; tracheal system desmitracheate, with two trunks confined to abdomen. Chaetotaxy: 1–1–1–1. TmI 0.16– 0.25, TmIV 0.12–0.18; leg formula IV–I–II–III; legs yellow without obvious patterns.

MALE PALP ( Figs 1–2View FigView Fig, 6–7View FigView Fig). Patella as long as tibia; tibia with one retrolateral and one dorsal trichobothrium, dorsally with two tongue-shaped apophyses, densely covered with teeth; paracymbium hookshaped; tegulum with long transparent protegulum; distal suprategular apophysis sclerotized, distal end curved, extending forward. Embolic division: tail piece long, slightly overlapping suprategulum; embolic membrane transparent, tapered towards tip; embolus long arc-shaped, distally connected with thick sclerotized anterior radical process, as long as embolus extending forward.

EPIGYNE ( Figs 3–4View FigView Fig, 8–9View FigView Fig). Ventral plate concave, covered with thick spines; posterior margin of dorsal plate with scapus; copulatory openings between dorsal and ventral plate; copulatory ducts long, columnshaped; dorsolateral spermathecae separated by ¾ of their diameter; fertilization ducts small, extending mesally.

Natural History

Mainly lives under leaf litter layer of broad-leaved and shrubbery forest; breeding season from October through April; adapted to temperatures from 0°C to 39°C.


China (Hunan Provice, Fig. 11View Fig).