Agyneta allosubtilis Loksa 1965

Dupérré, Nadine, 2013, Taxonomic revision of the spider genera Agyneta and Tennesseellum (Araneae, Linyphiidae) of North America north of Mexico with a study of the embolic division within Micronetinae sensu Saaristo & Tanasevitch 1996, Zootaxa 3674 (1), pp. 1-189 : 22-24

Agyneta allosubtilis Loksa 1965

Figs 79–85 , map 3

Agyneta allosubtilis Loksa 1965: 3 , f. 1–2. (Description Ƥ).

Type material: Agyneta allosubtilis Loksa 1965 , 3 HOLOTYPE from Central aimak, Ulan-Baator, Nuch im Bogo ul, 12km südöstlich vom Zentrum 1550m, 06.vii.1964 (Nr. 271). (ILC), NOT EXAMINED.

Diagnosis: Males can be distinguished from all other Agyneta species by the leaf-like lamella characteristica ending in a small prong ( Fig. 79 ). From A. decora by the fused tubercles of equal size ( Fig. 80 ), ventral fused tubercle being larger in A. decora ( Fig. 65 ). Females can be distinguished from most Agyneta by their minute pit hook depression and the tent-shaped marking on the epigynum ( Fig. 83 arrow). From A. decora by the straight sides of the proximal part of scape ( Fig. 83 ), sinuous in A. decora ( Fig. 68 ).

Description: Male: Total length 1.13; carapace length 0.86, width 0.70.

CEPHALOTHORAX: Carapace light brown, shiny, finely reticulate; suffused with dark gray along margin, radiating lines; trident mark present. Sternum light brown suffused with dark gray. Clypeus height 3. Chelicerae light yellow-brown with transverse gray band, not excavated; fangs thick and wide; seta-tipped tubercles absent; promargin two tiny denticles, retromargin 0 denticles, both margins without projections near base of fang. Cheliceral stridulatory organ ~56 striae, narrowly spaced throughout. ABDOMEN: Uniformly dark gray. LEGS: Yellow-orange, femur, tibia and metatarsus orange; leg I total length: 2.24; leg III total length: 2.06; Tm I: 0.77, Tm IV: present. GENITALIA: Palpal retrolateral tibial apophysis rounded, smooth; dorsal tibial apophysis, rugose; one retrolateral and one dorsal trichobothria ( Fig. 79 ). Cymbium triangular; glabrous depression present ( Fig. 79 ); dorsal and ventral cymbial tubercles fused and smooth; prolateral notch medium ( Fig. 80 ). Paracymbium apical pocket short, anterior pocket long and curved making a large cover, posterior pocket small and pointed ( Fig. 79 ). Embolus tip pointed and wide, with large serrated extension retrolaterally, one small sub-apical spine; Fickert’s gland elongated situated basally; ventral lamella grooved; thumb reaching below the embolus proper ( Fig. 81 ). Embolus proper set apically, ventral part slightly wider ( Fig. 81 ). Radix with multiple small spikes basally; anterior terminal apophysis narrow with protrusions; posterior terminal apophysis wide; lamella characteristica large, serrated apically ( Fig. 82 ).

Female: Total length 2.12; carapace length 0.80, width 0.57.

MAP. 3. Localities of Agyneta allosubtilis ( Emerton 1882) , distribution based on material examined, distribution based on Paquin et al. 2010, Agyneta perspicua n. sp.

CEPHALOTHORAX: Same coloration as male. Chelicerae yellowish, not excavated; fangs as in male; promargin two teeth, retromargin one denticle. Cheliceral stridulatory organ ~61 striae, narrowly spaced throughout. ABDOMEN: Same as male. LEGS: Same as male; palpal tarsus inflated, claw absent; leg I total length: 2.00; leg III total length: 1.68; Tm I: 0.76, Tm IV: present. GENITALIA: Epigynum with wide proximal part of scape narrowing apically, sides straight and oblique; epigynal slits long and oval; pit hook depression tiny ( Fig. 83 ); lateral lobes short and wide; stretcher indistinguishable ( Fig. 85 ). Median part of scape short and wide; genital pores situated at base of lateral lobes pockets ( Fig. 85 ). Internal genitalia with a large comma-shaped receptacula ( Fig. 84 ).

Other material examined: CANADA: Alberta: Athabasca, 21.v–04. vi.1986, 13, 18.vi–02. vii.1986, 13, white spruce heath, T. Rypien, R. Holmberg ( DBC); Caribou Mountains Wildland, Wentzel Lake, Birch point, 09– 11. vii.2003, 1 Ƥ, pitfalls, G. Hilchie, J. Hilchie ( DBC); Kakwa Wildland Provincial Park, Ridgeline near Deadhorse Meadows Equestrian Campground, 15–25.vi.2006, 33, pine, spruce, rhododendron, T. Johnson ( DBC); near Baptiste Lake, 23.v–07.vi.1988, 33, 07–19.vi.1988, 131Ƥ, R. Holmberg ( DBC); Waterton Lakes National Park, 1584m, 26.vi–03.vii.2000, pan trap and pitfalls, lodgepole pine/aspen forest, unburned, 2739Ƥ, E. Kinsella ( DBC); Willmore Wilderness Park, Sheep Creek fire, 1493m, 12–20.vii.2007, 93, G.Hilchie, D. Macaulay ( DBC); Willmore Wilderness Park, Smoky River, 1036m, 23–27.vi.2007, aspen-spruce forest, 13, T. Johnson, G.Hilchie ( DBC); Willmore Wilderness Park, Smoky River, 1036m, 13–21.vii.2007, aspen-spruce forest, 1Ƥ, G.Hilchie, D. Macaulay ( DBC); Willmore Wilderness Park, Smoky River, 1493m, 11–19.vii.2007, meadow edge, spruce-fir, 1Ƥ, G.Hilchie, D. Macaulay ( DBC); 9 km ESE Exshaw, 1524m, 17.vii–01.viii.1996, Pinus contorta forest, 231Ƥ, H. Carcamo ( DBC); 25km SW Rocky Mtn. House, 01–16.vi.1995, aspen forest, 13, 16.vi–07. vii.1995, 2 Ƥ, 07– 20.vii.1995, 231Ƥ, 20.vii–03.viii.1995, 231Ƥ, H. Carcamo ( DBC); 25km SW Rocky Mtn. House, 01–16.vi.1995, pine forest, 07–20.vii.1995, 134Ƥ, 16.vi–07.vii.1995, 532Ƥ, H. Carcamo ( DBC). British Columbia: Liard Hot Springs, vi– 08.vii.1981, pitfall, decicuous litter, C. Dondale ( CNC). Manitoba: Riding Mountain National Park, Swanson Spring, 20.vi.1979, pan trap, black spruce, 13, D.B. Lyons ( CNC); Riding Mountain National Park, Clear Lake, 0 8–28.vi.1979, pan trap, beaver meadow, 13, S. J. Miller ( CNC). Newfoundland: Gallants, 15.vii.1984, moss in balsam fir, 1Ƥ, L. Hollett ( CNC); North Twin Lake, 14.viii.1984, moss in forest, 1Ƥ, G. Costello ( CNC). Ontario: Sproule Bay, Lake Opeongo, Algonquin Park, 26.vi–07. vii.1945, 2 Ƥ, W. Ivie, Kurata ( AMNH).

Saskatchewan: Anglin Lake, 25–30. vi.1995, 13, 25–30.vi.1995, basin fen surronding Picea mariana woods, 43, D. Buckle ( DBC); St. Denis, 04–24.vi.1996, cultivated/trees, 13, K. Pivnick ( DBC). USA: Alaska: Alaska Hwy., 17.5 km S Sikanni River, 31.v–08.viii.1981, spruce-pine forest, 2Ƥ, C. Dondale ( CNC); Alaska Hwy., mile post no.1004, viii.1968, 1 Ƥ, W. Ivie ( AMNH). Maine: 10.1km NE Soubunge Mtn., 15.vi.1978, pitfall, spruce-fir forest, 13, D. Jennings, M.W. Houseweart ( CNC). Wyomin g: Grand Teton National Park, 03.vii.1968, 131Ƥ, 05.vii.1968, 13, 26.vii.1968, 13, D. Lowrie ( AMNH).

Distribution: Holarctic

Figures

FIGURES 79 – 85. Agyneta allosubtilis Loksa 1965. 79 – 82, Male. 83 – 85, Female. 79. Palp, retrolateral view. 80. Palp, prolateral view. 81. Embolus, prolateral view. 82. Radical division, retrolateral view. 83. Epigynum, ventral view (arrow points to tent-shaped marking). 84. Internal genitalia, ventral view. 85. Internal genitalia dorsal view.

FIGURES 64 – 71. Agyneta decora (O. Pickard-Cambridge 1871). 64 – 67, Male. 68 – 71, Female. 64. Palp, retrolateral view. 65. Palp, prolateral view. 66. Embolus, prolateral view. 67. Radical division, retrolateral view. 68. Epigynum, ventral view. 69. Internal genitalia, ventral view. 70. Internal genitalia, dorsal view. 71. Internal genitalia, lateral view.