Micrargus herbigradus (Blackwall, 1854)

Tanasevitch, Andrei V., 2011, On some linyphiid spiders from Taiwan (Araneae: Linyphiidae), Zootaxa 3114, pp. 31-39 : 34

Micrargus herbigradus (Blackwall, 1854)

Figs 7, 8

Material examined. Taiwan (R.O.C.): 13, Chiayi County, Alishan, Natural Scenic Area, Road 18, km 85 near intersection with road to Youth Activities Center, 2000 m a.s.l., forest litter, 11.IV.2009, leg. S. Vit [TAIW-09/16].

Remarks. The specimen from Taiwan shows no differences in palp structure from other continental conspecifics (see Figs 7, 8 ). M. herbigradus has been found in highlands in a native biotope, so it is quite possible to infer dispersal into Taiwan without invoking human intervention. The species is being reported from Taiwan for the first time (see Fig. 29 ).

Distribution. Widespread in Europe, registered from the Caucasus and the Urals. In Asia it is known from West and Middle Siberia, Kamchatka; through the mountains of South Siberia eastward to Khabarovsk and Maritime provinces, the Kurile Islands, Sakhalin; China, Japan ( Tanasevitch 2006).

Figures

FIGURE 29. Collecting localities in Taiwan. Cross –– Gongylidioides diellipticus Song & Li, 2008; Square –– Maculoncus orientalis n. sp.; triangle –– Micrargus herbigradus (Blackwall, 1854) & Oia imadatei (Oi, 1964); circle –– Oreonetides taiwanus n. sp. and Tapinocyba formosa n. sp.; s tar –– Solenysa longqiensis Li & Song, 1992.

FIGURES 7 – 14. Micrargus herbigradus (Blackwall, 1854) (7, 8), Oreonetides taiwanus n. sp. (paratype) (9, 10) and Tapinocyba formosa n. sp. (paratype) (11 – 14). 7, 8 –– right palp (retrolateral and prolateral, respectively); 9 –– embolus; 10 –– suprategulum and distal suprategular apophysis; 11, 12 –– male carapace (lateral and dorsal, respectively); 13 –– epigynum (ventral view); 14 –– vulva (dorsal). Abbreviations used: D –– sperm duct; EP –– embolus proper; MM –– median membrane; PH –pit hook; SS –– serrate surface; Th –– thumb. Not to scale.