Agyneta fillmorana ( Chamberlin 1919 )

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 : 61-64

Agyneta fillmorana ( Chamberlin 1919)

Figs 22 , 27 , 172 –184, map 10

Bathyphantes fillmoranus Chamberlin 1919: 249 , pl. 17, f. 5. (Description Ƥ).

Meioneta fillmorana Ivie 1969: 6 . (Transferred Ƥ from Bathyphantes ).

Gnathantes ferosa Chamberlin & Ivie 1943: 5 , f. 3–4. (Description 3). (Holotype 3 from Utah: City Creek Can., 111.40NW, September 11, 1928, W. J. Gertsch collector, AMNH). EXAMINED. NEW SYNONYMY.

Agyneta fillmorana Buckle et al. 2011: 100 . (Transferred from Meioneta ).

Type material: Bathyphantes fillmoranus Chamberlin 1919 , Ƥ HOLOTYPE from Utah, Fillmore Canyon, R.V. Chamberlin Coll. (unique number 425–RVC). MCZ, EXAMINED.

Diagnosis: Males are differentiated from all other Agyneta species by their small spoon-shaped lamella characteristica ( Fig. 172 ). Females are distinguished from all other Agyneta by their abdominal pattern ( Fig. 178 ) and their wide proximal part of scape with strong oblique sides (Fig. 181). Furthermore, from closely related species A. darrelli , males and females are distinguished by their orange sternum lightly suffused with dark gray, darker along margin, while in A. darrelli the sternum is uniformly suffused with dark gray. Females can be separated by the long connection between the stretcher and the lateral lobes (Fig. 184 arrow), very short in A. darrelli ( Fig. 194 arrow).

Description: Male: Total length: small morph 1.91; large morph 2.57; carapace length: small morph 0.83; large morph 1.33, width: small morph 0.62; large morph 0.93.

CEPHALOTHORAX: Carapace orange, shiny, finely reticulate; can be suffused with dark gray along radiating lines and pars cephalica. Sternum orange lightly suffused with dark gray, darker along margin. Clypeus height 3. Chelicerae (large morph) orange, not excavated, greatly enlarged; seta-tipped tubercles present; promargin with no denticles, retromargin carinated with one basal denticle; fangs greatly enlarged ( Fig. 179 ). Chelicerae (small morph) orange, not excavated nor enlarged; promargin three denticles, retromargin carinated with two small apical denticles; fangs normal ( Fig. 180 ). Cheliceral stridulatory organ visible, faint ~ 44 closely spaced striae, evenly spaced throughout. ABDOMEN: Patterned variable, (large morph) off-white with pattern consisiting of a dark median band extending laterally into chevrons ( Fig. 176 ); (small morph) off-white with pattern consisiting of a broken dark median band extending into chevrons ( Fig. 177 ). LEGS: Light yellow-orange; (large morph) leg I total length: 4.28; leg III total length: 2.89; (small morph) leg I total length: 3.87; leg III total length: 2.46; Tm I: 0.23, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis small, triangular; dorsal tibial apophysis rugose; two retrolateral trichobothria and a dorsal one ( Fig. 172 ). Cymbium with retrolateral fold; glabrous depression present ( Fig. 172 ); dorsal and ventral cymbial tubercles fused, smooth; prolateral notch shallow ( Fig. 173 ). Paracymbium with apical pocket only ( Fig. 172 ). Embolus tip pointed; basally, apically and ventrally with small spines; Fickert’s gland basal, slightly swollen; ventral lamella transparent, rugose; thumb going slightly beyond embolus proper ( Fig. 174 ). Embolus proper set apically, serrated, crest-like reaching tip of embolus ( Fig. 174 ). Anterior terminal apophysis long with rounded tip and short curved protrusions; posterior terminal apophysis short, with squared spiny tip; lamella characteristica small, spoon-shaped ( Fig. 175 ). PALPAL VARIATION: large morph individuals have a longer palpal tibia, larger cymbial fused tubercles more deeply excavated and a slightly larger lamella characteristica.

Female: Total length 2.11; carapace length 0.90, width 0.77.

MAP. 10. Localities of Agyneta fillmorana ( Chamberlin 1919) .

CEPHALOTHORAX: Carapace orange, shiny, finely reticulate; sometimes suffused with dark gray along radiating lines and pars cephalica. Sternum orange suffused with dark gray, darker along margin. Chelicerae orange; promargin four denticles, retromargin two small apical denticles. Cheliceral stridulatory organ visible, faint with ~34 closely spaced striae, evenly spaced throughout. ABDOMEN: Pattern variable, off-white with pattern consisting of a dark median band reaching mid-way with some apical chevrons ( Fig. 178 ) or off-white with pattern consisiting of a dark median broken band extending apically into lateral chevrons ( Fig. 177 ). LEGS: Light yelloworange; palpal tarsal claw absent; leg I total length: 3.89; leg III total length: 2.85; Tm I: 0.25, Tm IV: absent. GENITALIA: Epigynum with very wide proximal part of scape with oblique sides; epigynal slits long, oval; pit hook depression shallow but wide (Fig. 181); lateral lobes long and folded; stretcher medium; pit deep (Fig. 182). Median part of scape with constriction (Fig. 183); genital pores situated at base of lateral pockets (Fig. 184). Internal genitalia with rounded receptacula ventrally and a small triangular receptacula dorsally (Figs 182, 183).

Other material examined: CANADA: British Columbia: Kyuquot, McLean Island, 30.vii.1959, 1Ƥ, S. Neave ( AMNH); North of Fort Mc Leod, 01.viii.1968, 13, W. Ivie ( AMNH); Saanich, Vancouver Island, 27.v.1963, deciduous shrubs, 13, A. Turnbull ( CNC); Saanich, Vancouver Island, 27.viii.1953, 13, W. Ivie ( AMNH); Strathcona Park, Cream Lake, Vanvouver Island, 1260m, 17.viii.1988, moss litter, 1Ƥ, C. Guppy ( CNC); Upper Carmanah Valley, 16-28.x.1996, old growth riparian forest, 75m from stream, 1Ƥ, N. Winchester ( DBC); Vancouver, 19.vii–30.viii.1973, malaise trap,1Ƥ, J. Vockeroth ( CNC); Vancouver Island, DND Rocky Point, 26.viii.1995, 13, 15.xii.1994, 1Ƥ, malaise trap, Garry oak meadow, 20.x.1994, malaise trap, exposed rocky knoll, 1Ƥ, N. Winchester ( DBC); Wellington, 15–30. ix.1951, 13, R. Guppy ( AMNH). USA: Alaska: Duncan Canal, Big Castle Island, 27.viii.1951, 1Ƥ, B. Malkin ( AMNH); Ideal Cove, Mitkof Island, 04.ix.1951, 3Ƥ, B. Malkin ( AMNH); Menefee Inlet, Etolin Island, 21.ix.1951, 1Ƥ, B. Malkin ( AMNH); Port Beauclerc, Kulu Island, 21.viii.1951, 2Ƥ, B. Malkin ( AMNH); Point Barrie, Kupreanof Island, 09.ix.1951, 14Ƥ, B. Malkin ( AMNH); Revillagigedo Island, N Settlers Cove Camp [55.514N, 131.719W] 9m, 09.viii.2009, beating, mossy conifers 133Ƥ, J. Slowik ( UWBM); Skagway, 14.viii.1987, 1Ƥ, R. Holmberg ( DBC); Wrangell, 30.vii–04.viii.1951, 132Ƥ, B. Malkin ( AMNH). California: 24km ENE Chowchilla, 14.i.1985, 1Ƥ, V. Roth ( CAS); 4km ENE Manzanita Lake, 16.ix.1965, 33, J., W. Ivie ( AMNH); Anchor Bay, 28.vi.1952, 13, W.Gertsch ( AMNH); Berkeley, ix.1919, 1 Ƥ, H. Dietrich ( AMNH); Berkeley, 15.x.1956, 1Ƥ, A. Nadler ( AMNH); Big Tujunga Canyon, 27.xi.1955, 1Ƥ, R. Schick ( AMNH); Black Mountain, viii.1959, montane forest, 13, R. Schick, V. Roth ( AMNH); Canyon, 02.x.1981, 13, D. Denning ( AMNH); East side of Kaiser Peak Meadow, NE Huntington Lake, 2542m, 28.viii.1971, 13, H. Leech ( CAS); Escondido, 07.xi.1956, 13, A. Nadler ( AMNH); Hastings Reserve, 06.ix.1953, 33, D. Linsdale ( AMNH); Kaweah Lake, 27.ix.1978, herbs, sandy creek bed, 13, D. Caroll ( CAS); Lagunitas, 15.ix.1946, 1Ƥ, E. Ross ( CAS); Lindcove, 31.x.1978, citrus canopy, 1Ƥ, D. Caroll ( CAS); Mount Diablo, 20.ix.1953, 13, V. Roth ( AMNH); Moraga, 15-16.x.1979, sweeping, dry grassy13, 17.x.1979, 13, 23.x.1979, 13, 08.viii.1980, 23, 05.x.1981, 33, D. Denning ( AMNH); Muir Woods, 14.iv.1957, 1Ƥ, A. Nadler ( AMNH); Richardson Grove State Park, Durphey Creek, 146m, 12.ix.1992, under fallen bark, 23, D. Ubick, J. Boutin (CDU); Riverside, iv–v.1962, 132Ƥ, E. Schlinger ( AMNH); Robles del Rio, Hastings National History Reserve, 24.ii.1946, hill with oak, 1Ƥ, D. Linsdale ( AMNH); S of Mendocino, 500m E interstate and Rt1/Rd to Comptche, 19.vii.1990, 13, G. Hormiga, L. Garcia de Mendoza ( USNM); San Diego, Balboa Park, 03.x.1956, 332Ƥ, A. Nadler ( AMNH); Santa Barbara, 10.ix.1950, 13, H. Shantz ( AMNH); SE slope of Green Mountain, near gate on road to Mark Mine, 19.viii. 1971, 2316m, 13, H. Leech ( CAS); Tamarak Flat, Yosemite Park, 03.ix.1958, 23, V. Roth ( AMNH); Taylor State Park, 08.xi.1953, 1Ƥ, V. Roth, Schuster ( AMNH); Terminus Island, 25.xi.1958, 2Ƥ, A. Grigarick ( AMNH); Tilden Regional Park, 20.vi.1980, 13, J. Fraser ( CAS); Weed, 08.ix.1935, 13, R. Chamberlin ( AMNH). Nevada: Lake Tahoe, near Zephys Cove, 17.ix.1976, sweeping along shore, 13, D. Denning ( AMNH). Oregon: 3km E Rufus , 25.xi.1940, 1Ƥ, W. Ivie ( AMNH); 8km S Forest Grove, 28.xi.1940, 1Ƥ, W. Ivie ( AMNH); 11km E Brookings Myrtle Grove, Chetco River, 29.v.1952, 1Ƥ, W. Ivie ( AMNH); Ashland Watershed, 11.x.1998, pitfalls, 13, B. Peck ( DBC); Brookings, 19.vi.1952, 1Ƥ, B. Malkin ( AMNH); Jenny Creek LSR, Medford District, pitfalls, 13, B. Peck ( DBC); Lewisburg Saddle [44.636N, 123.294W] 15.ix. 1982, 138m, understory of douglas fir, 1Ƥ, A. Moldenke ( UWBM); Little Nestucca Park, road between Oretown and Rt. 22, 13.vii.1990, 1Ƥ, G. Hormiga ( USNM); McMinnville, 26.xi.1940, 1Ƥ, W. Ivie ( AMNH); McMinnville, Peavine Ridge, 10.ix.1946, 131Ƥ, ix.1947, 131Ƥ, K. Fender ( AMNH); Oak Creek Road [44.6N, 123.232W] 146–259m, 15.ix.1982, riparians shrubs, 13,3Ƥ, A. Moldenke ( UWBM); Quinnes Road, highway south of Alaska, 02.iii.1980, muddy creek bed, 1Ƥ, D. Caroll ( CAS); Sacandaga Camp [43.495N, 122.328W] 746m, beating, red cedar, 43, A. Moldenke ( UWBM); Spencer’s Butte, Eugene, 274–609m, 06.ix.1954, 13, B. Malkin ( AMNH). Utah: Emmigration Canyon, 24.ii.1940, 1Ƥ, S., D. Mulaik ( AMNH); Dry Canyon, 22.ii.1932, 1Ƥ, W. Ivie ( AMNH); Salt Lake City, 08.xi.1940, 3Ƥ, W. Ivie ( AMNH). Washington: Bald Hill (west end) [46.822N, 122.439W] 259m, 25.x.1992, oak litter, 2Ƥ, R. Crawford ( UWBM); Beeville Loop [47.279N, 123.458W] 163m, sifting, moss, 17.xi.1972, 1Ƥ, R. Crawford ( UWBM); Chelan Butte Road [47.813N, 120.048W] 670m, 21.ix.1998, foliage of douglas fir, 1Ƥ, R. Crawford ( UWBM); Chinook, 08.viii.1929, 4Ƥ, R. Chamberlin ( AMNH); Church Mountain trailhead [48.914N, 121.849W] 792m, 02.ix.1989, conifers, 1Ƥ, R. Crawford ( UWBM); Cle Elum River [47.241N, 121.063W] 649m, 30.ix.2005, beating, conifer foliage, 2Ƥ, R. Crawford ( UWBM); Cold Spring Bog [48.667N, 122.838W] 618m, 15.x.2002, conifer foliage around bog, 1Ƥ, R. Crawford ( UWBM); Elwha River, near Altaire Campground, Olympic National Park [48.01N, 123.33W] 02.viii.1980, 2Ƥ, G. Hormiga ( USNM); Evaline, Napavine Prairie [46.536N, 122.536W] 134m, 18.xi.2008, alder litter in meadow, 1Ƥ, R. Crawford ( UWBM); Everett, 16.ix.1935, 2Ƥ, R. Chamberlin, W. Ivie ( AMNH); Fisher Hill [45.735N, 121.256W] 390m, 16.ix.1984, sweeping, understory ponderosa and douglas fir, 1Ƥ, R. Crawford ( UWBM); Fort Flagier State Park [48.092N, 122.704W] 33m, 07.xii.2007, outside wall of bunker, 1Ƥ, R. Crawford ( UWBM); Gray’s River Valley [46.361N, 123.574W] 45m, 28.ix–08.x.1984, moss from logs, 1Ƥ, R. Crawford ( UWBM); Johnson Canyon [46.955N, 120.296W] 533m, 09.x.2008, 13, L. Ramseyer ( UWBM); Lake Killarney [47.28N, 122.29W] 112m, 15.viii.1964, 2Ƥ, J. Thomson ( UWBM); Larabee Park, 11.ix.1935, 2Ƥ, R. Chamberlin, W. Ivie ( AMNH); Massacre Bay [48.643N, 122.98W] 12m, 10.x.1999, oak litter, 2Ƥ, R. Crawford ( UWBM); Milk Canyon [46.855N, 120.819W] 883–914m, 0 9–11.xi.1996, sifting, litter, 13, Y. Marusik ( UWBM); Mount Constitution (south face) [48.655N, 122.833W] 487m, 16.x.2002, conifer foliage, 1Ƥ, R. Crawford ( UWBM); Muddy River Mudflow [46.185N, 122.14W] 1264m, 30.ix–16.x.1991, pitfalls, woods, 13, D. Mann ( UWBM); Orcas [48.599N, 122.943W] 24–30m, 10.x.1999, under stones in forest 1Ƥ, R. Crawford ( UWBM); Pullman [46.7N, 117.1W] 03.x.1968, malaise trap, 13, R. Dawson ( UWBM); Pumice Pond [46.262N, 122.189W] 1042m, 07.ix–11.x.1982, pitfalls, pyroclastics rocks, 132Ƥ, C. Becker ( UWBM); Pumice Pond, north slope [46.263N, 122.189W] 1051m, 11.x.1982, under rocks, 1Ƥ, R. Crawford ( UWBM); Rainbow Falls [48.343N, 120.699W] 414m, 24.ix.1998, sweeping, lush meadow, 1Ƥ, R. Crawford ( UWBM); 1.6km W Rainier [46.886N, 122.715W] 141m, 08.ix.1964, 13, J. Thomson ( UWBM); Skokomish River, south fork, 121m, 02.iii.1992, A. macrophyllum crown moss, 1Ƥ, J. McKenzie ( USNM); South of Hamma Hamma [47.56N, 123.072W] 167m, 15.x.1977, young douglas fir, 8Ƥ, R. Crawford ( UWBM); South of Spirit Lake [46.249N, 122.162W] 1103m, 24.viii–08. ix.1983, 13, 0 8–22. ix.1983, 13, 0 2– 11.x.1983, 131Ƥ, 22.ix–02. x.1983, 13, pitfalls, pyroclastics rocks, C. Becker ( UWBM); South of Spirit Lake [46.249N, 122.162W] 1103m, 11.x.1983 – 09.vi.1984, 236Ƥ, 13.iv–07. v.1985, 1 Ƥ, 20.ix–19.x.1985, 131Ƥ, 21.ix– 19.x.1985, 331Ƥ, 0 5–07. vi.1986, 1 Ƥ, 27.ix–14. x.1986, 1 Ƥ, pitfalls, pyroclastics rocks, R. Sugg ( UWBM); South of Spirit Lake [46.249N, 122.162W] 1103m, 24.viii.1983, fly traps, 13, R. Crawford ( UWBM); Seguin, 1929, 13, J. Grant ( AMNH); Stearns Creek [46.638N, 123.017W] 54m, 09.xi.1991, sweeping, fields,, 1Ƥ, R. Crawford ( UWBM); Stehekin River [48.336N, 120.704W] 350m, 22.ix.1998, conifer foliage, 13, R. Crawford ( UWBM); Sunset Beach [48.5N, 122.69W] 0–12m, 04.viii.1949, 1Ƥ, F. Kannenberg ( UWBM); SW Green Mountain [48.116N, 121.845W] 310m 01.iv.1990, helmlock understory, 13, R. Crawford ( UWBM); SW Spirit Lake [46.225N, 122.169W] 1072m, 20.ix–19.x.1984, 131Ƥ, 20.ix-19. x.1985, 1 Ƥ, pitfalls, pyroclastics rocks, R. Sugg ( UWBM); Vashon Island [47.459N, 122.456W] 115m, 13.x.1990, moss in bog, 2Ƥ, R. Crawford ( UWBM); W Spirit Lake [46.462N, 122.189W] 1042m, 28.iv–16. v.1983, 1 Ƥ, 24.viii–09. ix.1983, 13, 0 2–11.x.1983, 231Ƥ, 22.ix–02. x.1983, 1 Ƥ, pitfalls, pyroclastics, C. Becker ( UWBM); W Spirit Lake [46.462N, 122.189W] 1042m, 0 7– 23. v.1985, 1 Ƥ, 23–26. vi.1984, 3 Ƥ, pitfalls, volcanic rock, R. Sugg ( UWBM).

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

Figures

FIGURES 17 – 24. 17. Tennesseellum formicum (Emerton 1882), palp retrolateral view. 18. T. formicum, palp prolateral view. 19. T. formicum, female spinnerets anterior view. 20. T. formicum, male chelicerae lateral view. 21. Agyneta fabra (Keyserling 1886), male carapace anterior view. 22. Agyneta fillmorana (Chamberlin 1919), male carapace anterior view. 23. Agyneta parva (Banks 1896), male chelicerae anterior view. 24. Agyneta minorata (Chamberlin & Ivie 1944), male chelicerae anterior view.

FIGURES 25 – 30. 25. Agyneta protrudens (Chamberlin & Ivie 1933), chelicerae anterior view. 26. Agyneta maritima (Emerton 1919), chelicerae anterior view. 27. Agyneta fillmorana (Chamberlin 1919), embolus prolateral view. 28. Agyneta micaria (Emerton 1882), embolus prolateral view. 29 a. Agyneta decora (O. Pickard-Cambridge 1871), tracheal system dorsal view. 29 b. A. decora, tracheal base dorsal view. 30. A. decora, spiracles.

FIGURES 172 – 180. Agyneta fillmorana (Chamberlin 1919). 172 – 177, 179, 180, Male. 178, Female. 172. Palp, retrolateral view. 173. Palp, prolateral view. 174. Embolus, prolateral view. 175. Radical division, retrolateral view. 176. 177. 178. Abdomen, dorsal view. 179. Cephalothorax (enlarged morph), anterior view. 180. Cephalothorax (normal morph), anterior view.

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).