Pardosa jeniseica Eskov & Marusik, 1995

Marusik, Yuri M., 2018, Redescription of the Siberian species Pardosa jeniseica (Araneae: Lycosidae), Zootaxa 4497 (1), pp. 141-144 : 141-143

Pardosa jeniseica Eskov & Marusik, 1995 ( Figs 1–14 )

Pardosa jeniseica Eskov & Marusik, 1995: 65 , f. 64–65 (♂); Kronestedt 2013: 57, f. 4 (♀); Azarkina & Trilikauskas 2013: 63, f. 43–

44 (♀).

Pardosa jeniseica: Esyunin et al. 1999: 323 , f. 1–2 (♀, misidentified).

Faunistic records: Marusik et al. (1992, 2000); Marusik et al. (1993: as Pardosa sp. 1); Trilikauskas (2015).

Material examined: Holotype ♂ ( ZMMU Ta-7665), KAZAKHSTAN, East-Kazakhstan Area, Zaisan Distr., Karaungur River valley ( Kendirlik River basin), valley Populus forest, 18– 23.06.1990 (K.Y. Eskov) . RUSSIA: 1♂ 2♀ ( ZMMU), Krasnoyarsk Prov., Turukhansk Dist., Tsentralno-Sibirski Reserve, Yenisei R., Komsa kordon, 61.84°N 89.45°E, 25–30 m, 19– 26.06.2016 (V.K. Zinchenko) ; 1♀ ( ZMUT), Buryatia, Dzherginsky Reserve, Dzhirga kordon, river valley, 19.06.1996 (S. Koponen).

Diagnosis. Pardosa jeniseica belongs to the taczanowskii group of species. It differs from P. taczanowskii ( Thorell, 1875) , and another congrupers, by the epigynal plate being longer than wide, base of septum longer than wide; vs. as long as wide plate, and base of septum wider than long (cf. Figs 5–9 , and fig. 3 in Kronestedt 2013). Males of P. jeniseica can be easily distinguished from those of P. taczanowskii by the unswollen tibiae and much longer pubescence, metatarsi and tarsi of leg I, and unmodified palea (cf. Figs 2 , 10–14 and figs 1–2 in Kronestedt 2013).

Description. Male. Total length 7.25 long. Carapace 3.2 long, 2.56 wide; almost uniformly dark brown, median light band poorly distinct around fovea. Length and spination of leg segments in tables 1 and 2.

Palp as in Figs 4 , 9–10, 12–13 ; all segments except patella and tip of cymbium dark brown, almost black, patella and tip of cymbium brown. Tibia long, about 0.57 of femur length; cymbium as long as femur. Tegulum not extended ventrally; tegular apophysis with long pointed anterior arm, 3 times longer than wide; terminal apophysis square shaped, as long as wide; palea not modified; embolus thick, with sharply pointed tip.

Female. Total length [largest and (smallest)] 10.5 (8.5). Carapace 3.75 (3.5) long, 3.0 (2.85) wide; dark brown; median light band more distinct than in male; sublateral light band broken into 3 small brown spots. Length of leg segments in table 1. Spination like that of male, except on Mt II which has 1 prolateral spine.

Epigyne as in Figs 5–8 , 11 ; longer than wide; anterior pocket with 2 hoods; septum long, stem of septum (Ss) as long as basal part; base of septum (Bs) square shaped, about 1.5 times wider than anterior pocket; receptacles short, less that ½ of septum length, stretching parallel to each other, heads (Rh) slightly wider than copulatory ducts (Cd); heads separated by about 4 diameters. Posterior-lateral sides of endogyne with deep, well bordered oval depressions (Od).

Habitats. Throughout its range Pardosa jeniseica inhabits pebbly beaches along rivers and creeks.

Distribution. The species is known from east Kazakhstan (southernmost locality) to Kolyma River middle reaches, north to Verkhoyansk (67.55°N, northernmost locality). The map shown on Fig. 14 is based on literature records and new data. Material from all localities except for those in Altai and Khabarovsk Province have been checked personally. Records of this species from the Urals are based on misidentifications (Esyunin, personal communication).

Figures

FIGURES 14. Distribution records of Pardosa jeniseica. Arrow indicates type locality and open circles refer to new records.

FIGURES 1–8. Habitus and copulatory organs of Pardosa jeniseica. 1, 3 female and male, dorsal; 2 male legs I–III, dorsal; 4 male palp, retrolateral; 5–6, 8 macerated epigyne, ventral; 7 intact epigyne, ventral. Scale = 0.2 mm if not otherwise indicated. Abbreviations: Ap anterior pocket; Bs base of septum; Cd copulatory duct; Od oval depression; Ph hood of pocket; Rh head of receptacle; Ss septal stem.

FIGURES 9–13. SEM microphotographs of copulatory organs of Pardosa jeniseica. 9, 12–13 embolic division, posterioventral; anterior and ventral; 10 tegulum, ventral; 11 epigyne, ventral. Scale = 0.1 mm. Abbreviations: Em embolus; Ta terminal apophysis.