Oryphantes aliquantulus, Dupérré, Nadine & Paquin, Pierre, 2007

Dupérré, Nadine & Paquin, Pierre, 2007, Description of five new spiders from Canada (Araneae: Linyphiidae), Zootaxa 1632, pp. 1-20 : 5-7

Oryphantes aliquantulus new species

( Figs 10–18 , 20 )

Type material. HOLOTYPE: Canada: Québec: Baie-James (Jamsie), 119 km N of LaSarre [49.82°N, 79.02°W] 1ɗ 06.–15.vi.1997, Malaise/flight interception trap (pan), mature black spruce forest, P. Paquin & N. Dupérré ( AMNH); ALLOTYPE: Canada: Québec: Baie-James (Jamsie), 95 km N of LaSarre [49.60°N, 79.30°W] 1Ψ 21.–28.ix.1997, pitfall, old growth black spruce forest, P. Paquin & N. Dupérré ( AMNH); PARATYPES: Canada: Québec: Baie-James (Jamsie), 90 km N of LaSarre [49.58°N, 79.35°W] 1Ψ 21.ix.2004, hand collected in moss, black spruce forest, P. Paquin & N. Dupérré ( CPAD); Abitibi-Ouest, Duparquet Lake [48.50°N, 79.22°W] 1Ψ 13.–23.iv.1994, winter pitfall, mixed forest, P. Paquin & N. Dupérré ( CPAD); Abitibi-Ouest, Duparquet Lake [48.50°N, 79.22°W] 1ɗ 19.ii.–02.iv.1995, winter pitfall, mixed forest, P. Paquin & N. Dupérré ( CPAD); Abitibi-Ouest, Duparquet Lake [48.50°N, 79.22°W] 1ɗ 25.–29.v.1994, winter pitfall, white cedar/balsam fir forest, P. Paquin & N. Dupérré ( CPAD); Baie-James (Jamésie), 119 km N of LaSarre [49.82°N, 79.00°W] 1ɗ 20.–27.vii.1997, 1ɗ 22.–29.vi.1007, pitfall & Malaise/flight interception trap (pan), mature black spruce forest, P. Paquin & N. Dupérré ( CPAD); Baie-James (Jamésie), 87 km N of LaSarre [48.53°N, 79.33°W] 1ɗ 06.–15.vi.1997, Malaise/flight interception trap (pan), old growth black spruce forest, P. Paquin & N. Dupérré ( CPAD); Rouyn-Noranda, Labyrinthe Lake [48.82°N, 79.48°W] 5ɗ 23.v.–02.vi.1996, pitfall & emergence cage (pan), white cedar/balsam fir forest, P. Paquin & N. Dupérré ( CPAD); Rouyn-Noranda, Labyrinthe Lake [48.82°N, 79.48°W] 1Ψ 29.ix.–06.x.1996, Malaise/flight interception trap (pan), white cedar/balsam fir forest, P. Paquin & N. Dupérré ( CPAD).

Material examined. Canada: Alberta: Hinton, 32 km NW [53.59°N, 117.95°W] 3ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); 12 km S Hinton, Westside of Highway 40 [53.50°N, 117.55°W] 8ɗ 1Ψ 15.vi.–15.vii.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 20 km NW [53.48°N, 117.85°W] 2ɗ 01.– 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 22 km NW [53.55°N, 117.81°W] 1ɗ 01.– 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 23 km NW [53.54°N, 117.81°W] 1ɗ 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 24 km NW [53.57°N, 117.83°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 24 km NW [53.54°N, 117.85°W] 2ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 26 km NW [53.54°N, 117.89°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 26 km SE [52.22°N, 117.34°W] 4ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 27 km N [53.64°N, 117.70°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 29 km SE [53.19°N, 117.35°W] 4ɗ 01.–28.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 33 km NW [53.59°N, 117.97°W] 4ɗ 1Ψ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 34 km NW [53.59°N, 117.98°W] 1Ψ 15.vii.2004, pitfall, Hammond & Williams ( NFRC); Hinton 35 km NW [53.60°N, 118.00°W] 4ɗ 01.–15.vi.2004, pitfall, Hammond & Williams (ABC); Hinton, 36 km NW [53.58°N, 118.04°W] 7ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 37 km N [53.74°N, 117.62°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 39 km N [53.76°N, 117.65°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton 52, km NW [53.86°N, 117.79°W] 1Ψ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 52 km SE [53.12°N, 117.00°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 55 km N [53.90°N, 117.62°W] 1ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 55 km NW [53.86°N, 117.93°W] 3ɗ 01.–15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 59 km NW [53.90°N, 117.91°W] 2ɗ 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 60 km NW [53.91°N, 117.92°W] 5ɗ 01.–30.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 61 km N [53.94°N, 117.62°W] 1ɗ 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 62 km N [53.97°N, 117.67°W] 1ɗ 01.– 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 65 km N [53.99°N, 117.56°W] 3ɗ 01.– 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 65 km N [53.99°N, 117.48°W] 4ɗ 01.– 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 69 km N [54.02°N, 117.42°W] 2ɗ 01.– 15.vi.2004, pitfall, Hammond & Williams ( NFRC); Hinton, 70 km N [54.03°N, 117.47°W] 2ɗ 01.vi.– 15.vii.2004, pitfall, Hammond & Williams ( NFRC); Baptiste Lake [54.73°N, 113.53°W] 3ɗ 1Ψ 11.– 27.iv.1988, 3ɗ 1Ψ 27.iv.–11.v.1988, 1Ψ 07.–19.vi.1988, 1Ψ 23.xi.–28.xii.1988, R. G. Holmberg ( DBC); Rocky Mountain House, 25 km SW of [52.37°N, 114.92°W] 1Ψ viii.1996, pine forest, H. Carcamo ( HAC); Rocky Mountain House, 25 km SW of [52.37°N, 114.92°W] 3ɗ 2Ψ 18.v.–01.vi.1995, 1ɗ 01.–16.vi.1995, 1ɗ 16.vi–07. vii.1995, 1 Ψ 07.–20.vii.1995, pine forest, H. Carcamo ( DBC); Manitoba: Riding Mountain National Park, Whirlpool River [50.57N, 99.88W] 1ɗ 22.vi.1979, S.J. Miller ( CNC); Ontario: Marathon, 15 miles W of [20 km] [45.35°N, 76.13°W] 2ɗ 08.v.–17.vi.1963, pitfall, sphagnum, A.L. Turnbull ( CNC); Saskatchewan: Anglin Lake [53.70°N, 105.95°W] 1ɗ 21.v.–05.vi.1995, pitfall, basin fen in Picea mariana woods, D.J. Buckle ( DBC); U.S.A.: Maine: Piscataquis County, Soubunge Mountain [45.98°N, 69.20°W] 1ɗ 22.vi.1978, pitfall, spruce-fir forest, D.T. Jennings & M.W. Houseweart ( CNC).

Diagnosis. Oryphantes aliquantulus most resembles O. angulatus but can be distinguished from all members of the genus by the combination of the following characters: male palpal patella without conical tubercule ( Fig. 10 ); male palp paracymbium bearing a long and wide tooth at mid-point ( Fig. 10 ); lamella characteristica large, bifurcate apically ( Figs 10, 13 ); embolus with large serrated thumb ( Fig. 12 ). Female are diagnosed by the basal part of scape strongly constricted ( Fig. 14 ).

Description. Male (n=5): Total length: 1.60–1.70; carapace length: 0.67–0.70; carapace width: 0.57– 0.60; carapace light yellow-orange (1235M), finely reticulate, shiny. Sternum light yellow-orange (1235M), suffused with gray (warm gray 7M). Chelicerae light yellow-orange (1235M), promargin with 3 large teeth, retromargin with 4 denticles. Cheliceral stridulatory organ visible, with ~ 42 striae, narrowly spaced; associated stridulatory pick present at base of palpal femur. Abdomen uniformly colored, light beige (482M) to light gray (cool gray 3M) moderately covered with long semi-erected setae; book lung cover finely reticulate. Legs yellow-orange (1235M), leg formula 4123; tibia I–IV with two dorsal macrosetae; metatarsus I with dorsal trichobothrium (Tm I 0.15–0.17); Tm IV absent. Chaetotaxy: Fe I: 0-1-0-0, Fe II–IV: 0-0-0-0, Ti I: 2-1-1-0, Ti II: 2-0-1-0, Ti III–IV: 2-0-0-0, Mt I-IV: 1-0-0-0. Palpus length: 0.39–0.44. Palpal patella with large retrolateral macroseta ( Fig. 10 ); palpal tibia with two retrolateral trichobothia and a dorsal one ( Fig. 10 ); paracymbium (P) with long, wide tooth at mid-point ( Fig. 10 ); embolic division characterized by: large radix (R) ( Fig. 11 ); Fickert’s gland (FG) present in radix ( Fig. 11 ); lamella characteristica (LC) large, bifurcate apically ( Fig. 10 ), apex slightly variable ( Fig. 13 ); terminal apophysis (TA) large and serrate ( Fig. 11 ); embolus (E) with large serrated thumb (Th), embolus proper (EP) short ( Fig. 12 ).

Female (n=5): Total length: 1.60–1.80; carapace length: 0.64–0.70; carapace width: 0.54–0.57; overall coloration as in male. Chelicerae promargin with 3 teeth, smaller than male, retromargin with 4–5 denticles. Cheliceral stridulatory organ visible, with ~ 20 striae, widely spaced; associated stridulatory pick present at base of palpal femur. Abdomen as in male, book lung cover finely reticulate. Leg coloration as in male, leg formula 4123; tibia I–IV with two dorsal macrosetae; metatarsus I with dorsal trichobothrium (Tm I 0.16– 0.18); Tm IV absent; palpal tarsal claw present, reduced to a small triangular point. Chaetotaxy as in male. Epigynum width: 0.25–0.30. Epigynum lateral wall (LW) with elongated outgrowth, parallel to scape ( Fig. 14 ); scape (Sc) folded; proximal part of scape basally narrowed, enlarging considerably (3x) ( Figs 14, 15 ), ventral part bearing a scapus bag (SB) ( Fig. 18 ); distal part of scape with short stretcher (St) ( Figs 16, 17 ); spermathecae (S) oblong and bent ( Fig. 18 ).

Distribution. U.S.A.: Maine; Canada: Québec to Alberta ( Fig. 20 ).

Habitat. Forest litter, mainly conifers, and sphagnum.

Etymology. The epithet aliquantulus means little or small in latin and refers to the small size of the species for a linyphiine.

Figures

FIGURE 20. Localities of Oryphantes aliquantulus new species in North America.

FIGURES 10 – 18. Oryphantes aliquantulus new species. 10, palpus of male, retrolateral view; 11, expanded male palpus, schematic illustration; 12, excised embolus; 13, variation of tip of lamella characteristica, schematic illustration; 14, epigynum, ventral view; 15, spermathecae, ventral view; 16, spermathecae, dorsal view; 17, epigynum, lateral view; 18, spermathecae, lateral view. Scale bars = 0.1 mm. Abbreviations used as figures 1 – 9.