Sciastes extremus Holm 1967

Paquin, Pierre & Dupérré, Nadine, 2006, The spiders of Québec: update, additions and corrections, Zootaxa 1133, pp. 1-37 : 16

Sciastes extremus Holm 1967

( Figs 31–32 )

Material examined.— Canada: Québec: Mont­Albert, La Haute­Gaspésie, Parc de la Gaspésie, Lac Pelletier [48°55’N, 66°02’W] 10.­18.viii.1994, pitfall in Picea bog, elevation: 610 meters, 1ɗ, F. Landry ( CPAD).

Diagnosis.— This species resembles S. dubius but differs from the latter by the shape of the embolus tip (E) ( Fig. 31 ), the pointed anterior radical process (ARP) ( Fig. 31 ), and the shape of the palpal tibial apophysis (PTA) ( Fig. 32 ).

Distribution.— Previously known from Greenland ( Holm 1967) and from only one North American record in Washington ( Crawford 1988). See also Millidge (1984).

Remark.— The Parc de la Gaspésie is known to harbour relict and disjunct populations of spiders with Arctic distributions (see Paquin et al. 2000, Paquin & LeSage 2001). This new record for Canada is an important mention for the enigmatic distribution of this species. We were unable to locate a female for illustration.

Figures

FIGURES 25 – 32. 25 – 28. Eridantes utibilis. 25, palpus of male, ventral view; 26, cephalothorax of male, lateral view; 27, palpal tibia of male, dorsal view; 28, epigynum, ventral view. 29 – 30. Pocadicnemis spp. 29, Pocadicnemis pumila, palpus of male, median apophysis, apical view; 30, Pocadicnemis americana, palpus of male, median apophysis, apical view. 31 – 32. Sciastes extremus. 31, palpus of male, ventral view; 32, palpal tibia of male, dorsal view.