Agyneta simplex ( Emerton 1926 )

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 : 52-56

Agyneta simplex ( Emerton 1926)

Figs 158–164 , map 8

Lepthyphantes simplex Emerton 1926: 117 , f. 7. (Description 3).

Microneta tumoa Chamberlin & Ivie 1933: 37 , pl. 9, f. 100. (Description Ƥ). (Holotype Ƥ, AMNH Examined).

Microneta simplex Zorsch 1937: 858 . (Transferred Ƥ from Lepthyphantes ).

Meioneta tumoa Chamberlin & Ivie 1947: 60 . (Transferred Ƥ from Microneta , recorded 3). Meioneta simplex Kaston 1948: 140 . (Transferred Ƥ from Microneta ).

Agyneta simplex Saaristo & Koponen 1998: 579 , f. 11A-C, 12A-E (Transferred from Meioneta ).

Type material: Lepthyphantes simplex Emerton 1926 , 3 SYNTYPE from Holliston, Mass.:, Aug. 6, 1923. N. Banks. J.H. Emerton Coll. (unique number 23107). MCZ, EXAMINED.

Other label: Lepthyphantes simplex Emerton 1926 . 3 HOLOLECTOTYPE, Saaristo & Koponen 1996.

Diagnosis: Males are distinguished from all species by their uniformly serrated lamella characteristica with pointed tip ( Fig. 158 ). From A. uta by their pointed retrolateral tibial apophysis ( Fig. 158 ), rounded in the latter ( Fig. 165 ). Females are differentiated from all species by their proximal part of scape, very narrow apically ( Fig. 162 ). From A. uta by the absence of a tinge of dark gray on the proximal part of scape ( Fig. 162 ).

Description: Male: Total length 1.74; carapace length 0.73, width 0.57.

MAP. 8. Localities of Agyneta simplex ( Emerton 1926) , distribution based on material examined, distribution based on Paquin et al. 2010.

CEPHALOTHORAX: Carapace dark brown, shiny, finely reticulate; suffused with dark gray along margin, radiating lines; trident mark often present. Sternum dark brown strongly suffused with dark gray. Clypeus height 2. Chelicerae brown apical part lighter, with transverse dark gray band, not excavated; seta-tipped tubercles absent; promargin four denticles, retromargin four denticles; without projections near base of fang. Cheliceral stridulatory organ ~47 striae, well spaced getting closer basally. ABDOMEN: Uniformly dark gray. LEGS: Yellow; femur I and tibia I dark brown, retrolateral and prolateral sides of femora II-IV dark brown, tibia II-IV light brown; leg I total length: 2.47; leg III total length: 1.78; Tm I: 0.33, Tm IV: absent. GENITALIA: Palpal tibia rugose; retrolateral tibial apophysis short, pointed and rugose; dorsal tibial apophysis absent; two retrolateral trichobothria and a dorsal one ( Fig. 158 ). Cymbium triangular; glabrous depression present ( Fig. 158 ); dorsal cymbial tubercle wide, rounded and smooth; ventral cymbial tubercle absent; prolateral notch absent ( Fig. 159 ). Paracymbium apical pocket small, anterior pocket curved and deep, reaching the short and curved posterior pocket ( Fig. 158 ). Embolus tip pointed, straight; Fickert’s gland absent; ventral lamella, narrow and pointed; thumb short reaching below the embolus proper ( Fig. 160 ). Embolus proper set apically, dorsal part wider, serrated ( Fig. 160 ). Anterior terminal apophysis wide with a few short protrusions; posterior terminal apophysis striate; lamella characteristica large, serrated, ending in pointed tip ( Fig. 161 ).

Female: Total length 1.78; carapace length 0.75, width 0.57.

CEPHALOTHORAX: Same coloration as male. Chelicerae yellow; promargin five teeth, retromargin five denticles. Cheliceral stridulatory organ ~42 striae, narrowly spaced throughout. ABDOMEN: Same as male. LEGS: Same as male; palpal apendages dark brown, tarsal claw absent; leg I total length: 2.04; leg III total length: 1.88; Tm I: 0.31, Tm IV: absent. GENITALIA: Epigynum with wide, triangular proximal part of scape; epigynal slits oval; pit hook depression absent ( Fig. 162 ); lateral lobes large and short; stretcher seemingly absent; pit small ( Fig. 163 ). Median part of scape wide and short; genital pores situated at base of lateral lobes pockets ( Fig. 164 ). Internal genitalia with a large rounded receptacula and a large, oval dorsal one ( Figs 163, 164 ).

Other material examined: CANADA: Alberta: Birch Mountains Wildland Park, Big Island, 0 5–14.vi.2004, pitfalls, 33, G. Hilchie, G. Holmberg ( DBC); C.F.B. Suffield, Fish Creek area, 0 1–16.vi.1995, pitfalls, 13 ( DBC); Caribou Mountains Wildland, Wentzel Lake, 13.vii.2003, dry muskeg, 231Ƥ, T. Johnson ( DBC); Edmonton, 10– 24.vi.1982, pitfalls, grass, 13, G. Hilchie, G. Holmberg ( DBC); Elkwater Lake, 09.vi.1963, beating, willow-shrubs, 1Ƥ, A. Turnbull ( CNC); La Butte Creek, 0 6–11.vii.2001, 231Ƥ, W. Nordstrom, T. Johnson ( DBC); Lethbridge, 0 1–16. i.1981, 1 Ƥ, 0 1–15. iv.1981, 13, 16–30. iv.1981, 13, 20–29. v.1981, 13, pitfalls, R. Holmberg ( DBC); Wagner Natural Area, 6km W Edmonton, 16.v–03.vi.1985, 131Ƥ, 26.vi–02. vii.1985, 1 Ƥ, 0 6–13. viii.1985, 1 Ƥ, A. Finnamore, T. Thormin, T. Spanton ( DBC); Waterton lakes National Park, 10.vi.1980, pan trap, meadow, 132Ƥ, I. Smith ( CNC); Willmore Wilderness Park, Pauline Creek, 1493m, 11–19.vii.2007, pitfalls, fen near river, 23, G. Hilchie, D. Macaulay ( DBC). British Columbia: Goldstream Prov. Park, 32km N Victoria, 24.xii.1988, moss litter, conifer forest, 1Ƥ, R. West ( CNC); Queen Charlotte Island, 11.1km NW Q.C. City, 15–19.vii.1983, flight interception trap, 3Ƥ, J. Campbell ( CNC); South of 100 Mile House, 31.ii.1968, 1Ƥ, W. Ivie ( AMNH); Vancouver Island, Brentwood Bay, i.1975, 1 Ƥ, D. Buckle ( DBC); W of Creston, 27.viii.1965, 1Ƥ, J., W. Ivie ( AMNH). Manitoba: Clear Lake, 08-28.vi.1979, pitfalls, beaver meadows, 233Ƥ, S. Miller ( CNC); Rocky Mountain National Park, Swanson Spring, 18.vii.1979, pan trap, spruce, 232Ƥ, D. Lyons ( CNC). Nova Scotia: Weymouth, vii.1924, 131Ƥ, E. Bryant ( AMNH). Ontario: Island 1024, Lake Temagami, 15–25. viii.1946, 4 Ƥ, W. Gertsch, W. Ivie, Kurata ( AMNH); New Liskeard, 10.vii–01.viii.1973, pitfalls, grass and weeds field, 73, C. Starr ( CNC); Nipigon, 12.viii.1948, 1Ƥ, W. Gertsch, Kurata ( AMNH); Ottawa, 13–27.viii.1978, pitfalls, backyard, 1332Ƥ, L. Masner ( CNC); Toronto, Grenadier Pond, viii.1946, 13, 01.ix.1946, 5Ƥ, W. Ivie ( AMNH). Saskatchewan: 10km S Cadillac, 26-30. v.1995, 1 Ƥ, 30.v–01. vi.1995, 13, 21–27.vi.1995, 131Ƥ, 26–31. vii.1995, 13, 27.vii–01.viii.1995, 131Ƥ, pitfalls, prairie, J. Pepper ( DBC); 17 km SW Simmie, 22–27. v.1995, 13, 27.v–01. vi.1995, 13, 15- 22. viii.1955, 1 Ƥ, pitfalls, prairie, J. Pepper ( DBC); 8km NE Simmie, 24–29. v.1995, 23, 29.v–01.vi.1995, 131Ƥ, 18–24. vii.1995, 13, J. Pepper ( DBC); 9.5km SW Simmie, 27.v–01. vi.1995, 13, 24–30. vii.1995, 1 Ƥ, pitfalls, prairie ( DBC); 24km N Shaunavon, 24–30.vii.1995, pitfalls, prairie, 13, J. Pepper ( DBC); 8km NE Saskatoon, 18.v–13. vii.1967, 13, E. Gorin ( DBC); 8km NE Saskatoon, 13.viii.1968, 13, D. Karasiuk ( DBC); 32km SW Beechy, 30.vi.1970, slough margin, 13, R. Holmberg ( DBC); 64km N Swift Current, 30.vi.1970, short grass prairie, 1Ƥ, P. Riegert ( CNC); Besnard Lake, 17–21. v.1970, 13, D. Buckle ( CNC); Cypress Hills, Centre Block, 20–21.vi.1972, mixed woods, 2Ƥ, D. Buckle ( CNC); Edmonton, N Saskatchewan River Valley, 24.v–07. vi.1983, 13, 21.vi–05.vii 1983, 1Ƥ, J. Ryan ( DBC); Estevan, 28.vii.1965, 131Ƥ, J., W. Ivie ( AMNH); Fort Carlton, 11.viii.1986, 1Ƥ, D. Buckle ( DBC); Grasslands National Park, 11–14.vii.1996, pitfalls in crested wheatgrass, 1Ƥ, 0 1–28.vii.1996, pitfalls in prairie, 133, A. Finnamore ( DBC); Hanley, pitfalls in cultivated land, 0 9–30. v.1995, 13, 30.v–19.vi.1995, 132Ƥ, 19.vi–05. vii.1995, 1 Ƥ, 0 5–19. vii.1995, 1 Ƥ, K. Pivnick ( DBC); Hodgeville, 0 3– 27. vi.1996, 1 Ƥ, K. Pivnick ( DBC); Kernen’s Prairie, 13–14. vii.1960, 23, D. Karasiuk ( DBC); Lady Lake, 19– 20.vi.1969, poplar woods, 131Ƥ, 14.v.1972, 13, 07.ix.1984, marsh and meadow, ballooning, 1Ƥ, D. Buckle ( DBC); near Morse, 22–29.vi.2001, pasture, crested wheatgrass, 13, J. Pepper, R. Espie ( DBC); North Battleford, pitfalls in pasture, 0 6–10. vi.1996, 1 Ƥ, 0 6–26. v.1997, 13, 26.v–16. vi.1997, 13, K. Pivnick ( DBC); Saskatoon, 0 1– 15. ix.1981, 13, 13.viii.1982, 13, 15–31. ix.1982, 13, 13.x.1985, 1Ƥ, 17.vi.2002, 1Ƥ, 12.x.2004, 1Ƥ, D. Buckle ( DBC); Saskatoon, 12km W Estevan, 04.vi.1987, 131Ƥ, K. Roney ( DBC); St. Denis, 31.v–21.vi.1995, 33, 24.vi– 13. vii.1996, 13, pitfalls in cultivated wetland, K. Pivnick ( DBC). USA: Alaska: Chichagof Island, forest road 8504 and 8531, 0 8–14. vi.2003, 23, 0 9–16. vi.2003, 13, J. Slowick ( DBC); North Slope, near Chukchi Sea Coast, Cape Beaufort, 1.6km SE Radar site, 04.viii.1961, moist tundra, 1Ƥ, K. Stone ( AMNH); North Slope, near mouth of Pitmegea River, SE of Cape Sabine, 13.vii.1959, rocky ridge above moist hummock tundra, 1Ƥ, K. Stone ( AMNH); Topsy Creek Muskeg, 106m, 0 1–19.vi.1977, pitfalls, 13, D. Mann ( UWBM). Arizona: Chiricahua Mountains, Rustler Park, 2560m, 27.vii.1996, pine forest, 6Ƥ, D. Ubick ( DUC); Flagstaff, 13.vi.1934, 13, I. Rasmussen ( AMNH). Colorado: 8km W Longmont, Crane Hollow Drive, 0 7–20. v.1991, 23, 13–20. vi.1991, 13, 22.iv–06.v.1992, 33, grassy grove of trees, K. Stone ( AMNH); Skyway, 04.vii.1937, 1Ƥ, B. Paterson ( AMNH). Idaho: 6.4km NE of McCall, 18.x.1944, 232Ƥ, W. Ivie ( AMNH); Last Creek Reservoir, 20.viii.1936, 1Ƥ, W. Ivie ( AMNH); Stanley Basin, 12.vii.1935, 1Ƥ, W. Ivie ( AMNH). Maine: 13.6km NNE of Soubunge Mountain, T5 R11, 01.vi.1978, 13, 08.vi.1978, 13, pitfall in spruce-fir, D. Jennings, M. Houseweart ( USNM). Minnesota: Champlin, ii.1969, basement, 13, R. Huber ( AMNH). Nebraska: 32km W of Wells, 05.viii.1935, 1Ƥ, R. Chamberlin ( AMNH); Ruby Valley, 19.ix.1937, 1Ƥ, R. Chamberlin ( AMNH). New Mexico: Los Alamos, 03.viii. 1986, 2743m, aspen, 131Ƥ, D. Lowrie ( DBC). New York: McLean, 30.v.1921, 1Ƥ, C. Crosby ( AMNH). North Dakota: Stark Co., Richardton Schnell Ranch, 10.vi.1991, 13, 02.vi.1994, 13, D. Mott ( DBC); Bottineau Co., 0 8–14 vii.1966, 1 Ƥ, ( DBC); Cass Co., 14.vi.1966, 13, R. Sauer (DJB); Cass Co., 14–12. vii.1966, 13 ( DBC); Grand Forks Co., 0 9– 15. vii.1996, 1 Ƥ, ( DBC); Sargent Co., 0 4–12. vii.1996, 1 Ƥ, ( DBC); Traill Co., 0 9–15. vii.1966, 1 Ƥ, ( DBC). Oregon: Highway 5 exit 182 near Creswell, 02.iii.1980, damp weeds by pond, 13, D. Caroll ( CAS). Tennessee: Kingston, 12.vii.1933, 1Ƥ, W. Ivie ( AMNH). Utah: 9.6km E Kamas, 20.x.1940, 13, D. Mulaik ( AMNH); Brighton, 20.xi.1939, 23, D. Mulaik ( AMNH); City Creek Canyon, 22.v.1943, 531Ƥ ( AMNH); Clear Creek, Raft River Mountains, 04.ix.1932, 53 ( AMNH); Cobble Rest Camp, Provo River, Uinta Mountains, 19.vi.1941, 13, 20.viii.1942, 1Ƥ, W. Ivie ( AMNH); East canyon, 14.vi.1942, 7Ƥ, W. Ivie ( AMNH); Snow Creek W of Sevier, 17.x.1942, 4Ƥ ( AMNH). Washington: 1.6km EW Rainier, 141m, 19.x.1964, 1Ƥ, J. Thompson ( UWBM); Big Lake Bog, 128m, 13, sphagnum in bog, I. Masse ( UWBM); Bodie Mountain Pond, 969m, 22.vi.1992, moss in bog, 1Ƥ, R. Crawford ( UWBM); Bumpin River, 975m, 15.vi.1991, alder litter, 1Ƥ, R. Crawford ( UWBM); Camas Land, 877m, 12.vi.2007, Crataegus douglasii litter, 13, R. Crawford ( UWBM); Centralia Canal, 97m, 23.x.2007, grassy field litter, 1Ƥ, R. Crawford ( UWBM); E of Gate village, 39m, 16.iv.2010, sifting, prairie ground moss, 1Ƥ, R. Crawford ( UWBM); E Lone Tree Mountain, 1121m, 0 5–23.viii.1983, pitfalls in clearcut, 13, K. Johnson ( UWBM); Evaline, Napavine Prairie, 134m, 18.xi.2008, grassy meadow litter and moss, 2Ƥ, R. Crawford ( UWBM); Kennedy Creek, 0.6m, 23.x.1976, sweeping grass, 131Ƥ, R. Crawford ( UWBM); Killebrew Lake, 88m, 14.viii.1992, moss on bog mat, 231Ƥ, R. Crawford ( UWBM); Midvle Br., Lecerc Creek, 865m, 09.vi.1986, webs in soil depressions, 3Ƥ, R. Crawford ( UWBM); N of Butte Camp, 1383-1554m, 15.vii–11. viii.1981, 1 Ƥ, D. Mann,07-15. vii.1982, 13, 09.ix–05.x.1982, 131Ƥ, 15–30. vii.1983, 13, 27.vi–15. vii.1983, 13, pitfalls in alpine meadow, C. Becker ( UWBM); Pumice Pond, 1042m, 07.ix–11.x.1982, pitfalls in pyroclastics rocks, 13, C. Becker ( UWBM); Puyallup Extension Center, 0 6–09. ix.1991, 1 Ƥ, 12–15. vii.1991, 13, pitfalls in lawn, J. Stark ( UWBM); S Dennie Ahl Seed Orchard, 198m, 06.v.1986, 231Ƥ, 20.v.1986, 13, moss, understory in marsh, R. Crawford ( UWBM); S Spirit Lake, 1102m, 05.v–08. vi.1983, 2 Ƥ, 0 2–13. vii.1983, 3 Ƥ, 22.vi–12. vii.1983, 4 Ƥ, 22.vii– 02. viii.1983, 3 Ƥ, 0 9–26. vi.1984, 3 Ƥ, 11–27. vii.1984, 2 Ƥ, 26.vi–11. viii.1984, 2 Ƥ, 13.iv.1985, 1Ƥ, 10–23.vi.1985, 131Ƥ, 10–24. vii.1984, 13, pitfalls in pyroclasics rocks, C. Becker, R. Sugg ( UWBM); SE Skookumchuck River, 73m, 25.iv.2002, ground moss at clearing edge, 1Ƥ, R. Crawford ( UWBM); Skykomish River, 80m, 21.i.1994, under stone along river shore, 1Ƥ, R. Crawford ( UWBM); Snoqualmie bog, 463m, 18.x.1992, sphagnum hummocks in water, 13, R. Crawford ( UWBM); Spring Flat Creek, 740m, 30.vii–06.viii.1980, pitfalls in wheatfield, 2Ƥ, L. Corpus ( UWBM); Stearns Creek, 54m, sweeping fields, 09.xi.1991, 131Ƥ, R. Crawford ( UWBM); SW Spirit Lake, 1072m, 19–31. vii.1985, 1 Ƥ, 20.ix–19. x.1985, 1 Ƥ, pitfalls in volcanic rocks, R. Sugg ( UWBM); Tucannon River, 167m, 26.vi.1987, sweeping understory, 1Ƥ, R. Crawford ( UWBM); W Spirit Lake, 1042m, 28.iv–16. v.1983, 13, 0 9–22. vi.1983, 3 Ƥ, 22.vi–12. vii.1983, 13, 22.vii–02. viii.1983, 2 Ƥ, 24.viii– 09. ix.1983, 13, 0 7–23. v.1985, 1 Ƥ, pitfalls in pyroclastics rocks, C. Becker, R. Sugg ( UWBM); Weir Prairie, 163m, sweeping prairie edge, 25.iii.1993, 1Ƥ, S. Choe ( UWBM). Wyoming: Canyon, 21.vi.1938, 2Ƥ, W. Ivie ( AMNH); Grand Teton National Park, 11.viii.1940, 132Ƥ, 20.vii.1940, 13, 27.vii.1958, 13, 12–18. viii.1962, 13, D. Lowrie ( AMNH); Yellowstone National Park, 09.vii.1935, 2Ƥ, 20–24.vi.1938, 12317Ƥ, 11–12.viii.1940, 637Ƥ, W. Ivie ( AMNH).

Distribution: Nearctic.

Figures

FIGURES 158 – 164. Agyneta simplex (Emerton 1926). 158 – 161, Male. 162 – 164, Female. 158. Palp, retrolateral view. 159. Palp, prolateral view. 160. Embolus, prolateral view. 161. Radical division, retrolateral view. 162. Epigynum, ventral view. 163. Internal genitalia, ventral view. 164. Internal genitalia, dorsal view.

FIGURES 165 – 171. Agyneta uta (Chamberlin 1920). 165 – 168, Male. 169 – 171, Female. 165. Palp, retrolateral view. 166. Palp, prolateral view. 167. Embolus, prolateral view. 168. Radical division, retrolateral view. 169. Epigynum, ventral view. 170. Internal genitalia, ventral view. 171. Internal genitalia, dorsal view.