Agyneta darrelli, Dupérré, Nadine, 2013

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 : 64-66

Agyneta darrelli new species

Figs 185–194 , map 11

Type material: Male holotype from Washington, Friday Harbor, W123.01: N48.28, June-July 1928, Shackleford ( AMNH). EXAMINED.

Etymology: The specific name is a patronym in honor of Darrell Ubick, curatorial assistant at the California Academy of Sciences, great arachnologist and dear friend.

Diagnosis: Males are distinguished from all other Agyneta species by the long hook-shaped lamella characteristica ( Fig. 185 ). Females are distinguished from most species by their abdominal patterns ( Fig. 190 ). From A. fillmorana see diagnosis of the latter and from A. bucklei by the oblique sides of the proximal part of scape ( Fig. 191 ), straignt in the latter ( Fig. 206 ).

Description: Male: Total length 2.23; carapace length 0.93, width 0.79.

CEPHALOTHORAX: Carapace orange-brown, shiny, finely reticulate; suffused with dark gray along radiating lines and pars cephalica. Clypeus height 3. Sternum completely suffused with dark gray. Chelicerae orange-brown, not excavated; seta-tipped tubercles absent; promargin three denticles, retromargin one small apical denticle. Cheliceral stridulatory organ visible ~14 striae, well spaced followed by 28 closely spaced striae. ABDOMEN: Coloration highly variable; uniformly dark gray or dark gray with some off-white specks or else with dark median band and dark lateral sides ( Fig. 189 ). LEGS: Light yellow-orange; leg I total length: 4.31; leg III total length: 2.87; Tm I: 0.30, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis small, triangular; dorsal tibial apophysis smooth; two retrolateral trichobothria and a dorsal one ( Fig. 185 ). Cymbium with retrolateral fold; glabrous depression present ( Fig. 185 ); dorsal and ventral cymbial tubercles reduced, slightly rugose; prolateral notch absent ( Fig. 186 ). Paracymbium with apical pocket only ( Fig. 185 ). Embolus tip pointed, with a few apical spines; Fickert’s gland absent; ventral lamella spiny apically, serrated basally; thumb going beyond the embolus proper ( Fig. 187 ). Embolus proper set apically, serrated, crest-like extending to the tip of embolus ( Fig. 187 ). Anterior terminal apophysis long and pointed with curved protrusions; posterior terminal apophysis short, with spines basally; lamella characteristica hook-shaped ( Fig. 188 ).

Female: Total length 2.31; carapace length 1.06, width 0.81.

MAP. 11. Localities of Agyneta darrelli n. sp. and of Agyneta miniata n. sp.

CEPHALOTHORAX: Coloration same as male. Chelicerae orange-brown, promargin five denticles, retromargin three apical denticles. Cheliceral stridulatory organ visible ~14 striae, well spaced followed by ~37 striae closely spaced. ABDOMEN: Coloration highly variable; uniformly dark gray or with dark median band and dark sides or else dark gray apically and laterally ( Fig. 190 ). LEGS: Same as male; palpal tarsal claw absent; leg I total length: 4.40; leg III total length: 3.14; Tm I: 0.30, Tm IV: absent. GENITALIA: Epigynum with wide proximal part of scape with slightly oblique sides; epigynal slits oval; pit hook depression shallow ( Fig. 191 ); lateral lobes short and wide; stretcher and pit medium ( Fig. 192 ). Median part of scape elongated and narrow ( Fig. 193 ); genital pores located at base of lateral lobes pockets ( Fig. 194 ). Internal genitalia with rounded receptacula ventrally and a small triangular receptacula dorsally ( Figs 192, 193 ).

Other material examined: CANADA: British Columbia: Bamfield, 19–22. viii.1986, 2 Ƥ, I. Warkentin ( DBC); French Beach Park, 25.vi.1987, 1Ƥ, D. Buckle ( DBC); Goldstream Provincial Park, N of Victoria, 25– 30.vi.1979, beating, douglas fir, 332Ƥ, C. Dondale ( CNC); Mount Cain, 12.x.1996, malaise trap, 13, N. Winchester ( DBC); Parksville, 10–19. vii.1978, 2 Ƥ, D. Buckle ( DBC); Ucluelet Pacific Rim National Park, Halfmoon Bay, 18.vii.1979, western hemlock foliage, 13, I. Smith ( CNC); Upper Carmanah Valley, 28.viii– 09.ix.1991, 131Ƥ, N. Winchester ( DBC); Vancouver Island, DND Rocky Point, 15.v.1995, exposed rocky knoll, 1Ƥ, 04.vi.1995, garry oak open meadow, 2Ƥ, 21.vi.1995, douglas fir, forest floor, 43, malaise trap, N. Winchester ( DBC); Victoria, Beaver Lake Park, 18.vii.1986, low bush, 5Ƥ, R. West ( CNC). USA: California: L.B.J. Grove Redwood National Park, 19.vi.1943, 1Ƥ, D. Buckle ( DBC); S.P. Taylor State Park, 21.vi.1991, shaking redwood forest, sword ferns, 435Ƥ, D. Ubick, I. Budi ( DUC); Woodside, 05.vii.1958, 2Ƥ, W. Gertsch, V. Roth ( AMNH). Oregon: 11km E Brooking Myrtle Grove, Chetco River, 29.v.1952, 1Ƥ, V. Roth ( AMNH); Canon Beach, 21.vi.1993, 133Ƥ, D. Buckle ( DBC); Fort Stevens State Park, 0–7m, 17.vi.1969, 7Ƥ, R. Crawford ( UWBM); Newport, 17.vi.1993, 1Ƥ, D. Buckle ( DBC); Oswald West State Park, 23.vi.1993, 536Ƥ, D. Buckle ( DBC); Pistol River, 28.v.1953, 13, 21.vi.1953, 13, B. Malkin ( AMNH); Young River Falls, 15.vi.1993, forest understory and clearing, 13, D. Buckle ( DBC). Washington: 1.6km E Smallpox Bay [48.541N, 123.136W] 167m, 17.vi.2000, grassy understory around pond, 23, R. Crawford ( UWBM); Big Beef Creek [47.65N, 122.778W] 24–30m, 29.ix.1999, forest understory foliage, 2Ƥ, R. Crawford ( UWBM); Boulder Creek [47.981N, 123.602W] 198-208m, 19.vi.2008, moss on trees, logs, boulder, 53, R. Crawford ( UWBM); Cape Alave [48.159N, 124.728W] 0–3m, 17.vii.1984, sweeping, beach meadow, 1Ƥ, R. Crawford ( UWBM); Cascade Lake [48.648N, 122.844W] 118m, 15.x.2002, understory of alder forest, 2Ƥ, R. Crawford ( UWBM); Cat Lake [48.069N, 122.967W] 100–103m, 23.iv–04.v.1987, douglas fir, 3135Ƥ, R. Crawford ( UWBM); Chehalls River [46.625N, 123.26W] 91m, 11.vii.1976, sweeping, railroad tracks, 23, R. Crawford ( UWBM); Cranberry Lake [46.403N, 124.036W] 6m, 18.v.1993, spruce foliage, 23, R. Crawford ( UWBM); Dabob Bay [47.846N, 122.812W] 0–4.5m, 02.v.1992, shrubs at forest edge, 13, R. Crawford ( UWBM); Discovery Park, Fort Lawton [47.666N, 122.411W] 22m, 29.ix.1980, forest leaf litter, 1Ƥ, R. Nelsons ( UWBM); East side of Elwha River [48.140N, 123.552W] 3m, 19.vi.2008, sweeping, douglas fir foliage in meadow 139Ƥ, R. Crawford ( UWBM); Elwha River, west bank [48.032N, 123.592W] 91m, sweeping, forest understory, 239Ƥ, T. Anderson ( UWBM); English Camp [48.586N, 123.147W] 15m, 10.vi.2001, tall understory foliage, 2Ƥ, R. Crawford ( UWBM); FHL Biological Preserve [48.551N, 123.008W] 38m, 11.viii.1989 – 28.vi.1990, overwinter pitfall, forest, 1Ƥ, R. Crawford ( UWBM); Flander Lake [46.948N, 122.689W] 135m, 16.v.1993, 23, R. Crawford ( UWBM); Flander Lake [48.155N, 123.701W] 3m, 22–30.v.1987, spruce at edge of meadow, 23, R. Crawford ( UWBM); Fort Canby State Park [46.294N, 124.071W] 3m, 21.v.1988, young spruce, 23, R. Crawford ( UWBM); Fort Ebey State Park [48.219N, 122.756W] 60m, 15– 17.vi.1987, conifers, 5314Ƥ, R. Crawford ( UWBM); Highway 101 [48.158N, 123.933W] 53m, 16.vii.1984, sweeping, field, 1Ƥ, R. Crawford ( UWBM); Harper County Park [47.516N, 122.518W] 30m, 08.vi.2009, understory foliage, 132Ƥ, R. Crawford ( UWBM); Hoffman Woods [47.096N, 122.68W] 88m, 29.v.1986, beating, forest understory, 231Ƥ, R. Crawford ( UWBM); Hunter Woods [47.094N, 122.664W] 82m, 29.v.1986, beating, douglas fir, 13, R. Crawford ( UWBM); Lake Goodwin Road [48.142N, 122.281W] 152m, 1Ƥ, J. Thomson ( UWBM); Lake Pondilla [48.227N, 122.765W] 16.v.1987, beating, understory, 1Ƥ, R. Crawford ( UWBM); Long Ridge Trail [47.944N, 123.538W] 281m, 20.vi.2008, Polystichum-Mahonia understory, 13, T. Anderson ( UWBM); Moclips River [47.243N, 124.211W] 4.5m, 30.v.1992, shrubs, 13, G. Matos ( UWBM); N side Christianson Cove [47.406N, 122.521W] 3m, 09.x.1993, 1Ƥ, 19.x.1993, 1Ƥ, shrubs overhaning bluff, R. Crawford ( UWBM); Nisqually Flats [47.098N, 122.682W] 0m, 29.v.1986, beach wood understory, 23, R. Crawford ( UWBM); Old Town Lagoon [48.463N, 122.96W] 33m, 18.vi.2000, forest understory, douglas fir foliage, 16352Ƥ, R. Crawford ( UWBM); Ozette Lake [48.151N, 124.668W] 9m, 17.vii.1984, beating, forest bush, 131Ƥ, R. Crawford ( UWBM); Pillar Point [48.21N, 124.104W] 0–6m, 16.vii.1984, spruce in beach meadow, 1Ƥ, R. Crawford ( UWBM); Pillar Point [48.22N, 124.125W] 0–30m, 22.v.1987, spruce overhanging beach, 13, R. Crawford ( UWBM); Point no Point Park [47.908N, 122.527W] 24–30m, 27.vi.1999, tree trunk moss, 131Ƥ, R. Crawford ( UWBM); Pratts Bluff [48.12N, 122.56W] 60m, sweeping, 1Ƥ, R. Crawford ( UWBM); Rainbow Falls State Park [46.633N, 123.243W] 51m, sweeping, 1Ƥ, R. Crawford ( UWBM); Robinson Road S of Littlewaup Creek [47.457N, 123.117W] 51m, 19.v.2005, salal and heath bush, 1Ƥ, R. Crawford ( UWBM); S of Shelton Valley [47.177N, 123.145W] 16m, 19.vi.2005, forest understory, 331Ƥ, R. Crawford ( UWBM); Salt Creek [48.15N, 123.145W] 15m, 23.v.1987, moss on tree, 231Ƥ, R. Crawford ( UWBM); Salt Creek [48.161N, 123.702W] 0– 1.5m, 23.v.1987, conifers at edge of beach, 2134Ƥ, R. Crawford ( UWBM); Sandy Point [47.123N, 122.776W] 30m, 09.vii.2009, understory foliage, 13, L. Ramseyer ( UWBM); Scar Hill [46.859N, 123.699W] 243m, 23.vii.1989, forest understory, 6Ƥ, R. Crawford ( UWBM); SE Little Mountain [48.499N, 123.076W] 49m, 19.vi.2000, foliage douglas fir, 1Ƥ, R. Crawford ( UWBM); Sequim Bay State Park, 6km SE Sequim, 01.vii.1974, 23, P. Arnaud ( CAS); Sunset Beach [48.5N, 122.5W] 0– 12m., 04.viii.1949, 1Ƥ, F. Kannenberg ( UWBM); SW Sandy Point [47.121N, 122.77W] 19m, 09.vii.2009, forest understory Tsunga heterophylla foliage, 12Ƥ, R. Crawford, L. Ramseyer ( UWBM); Tuttle Creek [46.858N, 123.633W] 42–60m, 23.vii.1989, young conifers, 13, H. Moser ( UWBM); W Fort Satop River [47.273N, 123.56W] 134m, 12.vii.1976, sweeping along river, 1Ƥ, R. Crawford ( UWBM); Whitepine Creek [47.771N, 120.925W] 853m, 30.vi.2008, understory foliage, 13, R. Crawford ( UWBM).

Distribution: Western North America (British Columbia to California).

Figures

FIGURES 185 – 194. Agyneta darrelli n. sp. 185 – 189, Male. 190 – 194, Female. 185. Palp, retrolateral view. 186. Palp, prolateral view. 187. Embolus, prolateral view. 188. Radical division, retrolateral view. 189. 190. Abdomen, dorsal view. 191. Epigynum, ventral view. 192. Internal genitalia, ventral view. 193. Internal genitalia, dorsal view. 194. Distal part of scape, posterior view (arrow points to the connection between the stretcher and the lateral lobe).

FIGURES 202 – 208. Agyneta bucklei n. sp. 202 – 205, Male. 206 – 208, Female. 202. Palp, retrolateral view. 203. Palp, prolateral view. 204. Embolus, prolateral view. 205. Radical division, retrolateral view. 206. Epigynum, ventral view. 207. Internal genitalia, ventral view. 208. Internal genitalia, dorsal view.