Apostenus grancanariensis

Wunderlich, Joerg, 2011, On European Spiders Of The Nominal Families Liocranidae, Miturgidae And Zoridae (Araneae), With Descriptions Of New Taxa, Beiträge zur Araneologie 6 (1), pp. 108-120 : 113-114

Apostenus grancanariensis WUNDERLICH 1992 (figs. 17a-d)

Material: Canary Islands: Gran Canaria, numerous specimens from different localities, pit falls , P. NABAVI leg., coll. P. N.; 6 ♂ 2♀, NW Artenara, grasland with pines , 1250 m, P. N. leg. 21. XI. 1999 - 15. I. 2000, CJW .

Description of the male which was unknown up to now:

Measurements (in mm): Body length 1.7-2.0, prosomal length 0.9-1.0, tibia I 0.7, tibia IV 0.8. - Opisthosoma ventrally with a large field of tiny bristles (fig. 17a) like in other congenerics. Leg bristles like in the female. Pedipalpus ( figs. 17b-c; d ): with a thick and almost pointed embolus and a slender median apophysis.

Relationships: In A. annulipedes WUNDERLICH 1987 from Tenerife the apical part of the embolus is wider - see WUNDERLICH (1992: Fig. 750g) in A. sp. indet. from Tenerife ( fig. 16a ) the embolus is more pointed.

Remark: In one of the males (CJW) the left pedipalpus is a malformation in which an additional tibial apophysis exists (arrow in fig. 17d ), the cymbium is shortened, and the bulbus is absent. The right pedipalpus has a normal shape.

Distribution: Canary Islands: Gran Canaria.

Figures

figs. 17 a-d: Apostenus qrancanariensis WUNDERLICH 1992, ♂; 17 a) tiny bristles of the ventral-medial part of the opisthosoma; 17 b) ventral aspect of the left bulbus; the arrow points to the opening of the sperm duct; 17 c) dorsal aspect of the right pedipalpal tibia; 17 d) dorsal aspect of the left pedipalpal tibia: A malformation with an additional apophysis (arrow). Scale bar 0.1; figs. 18 - 21: Arabella pheidoleicomes BOSSELAERS 2009 ♀ (Greece); 18) dorsal aspect of the body; 19) ventral aspect of the prosoma; 20) epigyne; 21) vulva. Scale bars 0.5 in figs. 18 - 19), 0.25 in 20), 0.1 in fig. 21). Taken from BOSSELAERS.

fig. 12 a) Mesiotelus grancanariensis WUNDERLICH 1992, ♀, epigyne. Scale 0.1 mm; fig. 12 b) Liocranum rupicola (WALCKENAER 1928), ♀, epigyne. Taken from GRIMM (1986). figs. 13 - 15: Prochora lycosiformis (O. PICKARD-CAMBRIDGE 1872); 13 - 14: Ventral and retrolateral aspect of the left ♂ - pedipalpus; 15) ♀, epigyne; figs. 16 - 16 a: Apostenus sp. indet., ♂ (Tenerife, Anaga mountains); 16) retrolateral aspect of the right pedipalpal tibia; 17) ventral aspect of the right pedipalpus. The bulbus is slightly expanded. Scale bars 0.2 mm.