Agyneta girardi, 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 : 141-143

Agyneta girardi new species

Figs 459–465 , map 30

Type material: Male holotype from New Mexico, 2 mile E of Taos, W 105.33: N 36.24, 06.x.1965, J., W. Ivie ( AMNH). EXAMINED.

Etymology: The specific name is a patronym in honor of my mother’s side of my family; numerous descendants of the Girard family from the Saguenay River region, Québec, Canada.

Diagnosis: Males are diagnosed from all Agyneta by their elongated lamella characteristica ( Fig. 459 ), from A. lophophor , by the wider base of the lamella characteristica ( Fig. 459 ), narrower in the latter ( Fig. 450 ). Females are diagnosed from all species very narrow median part of scape ( Fig. 465 ), from A. lophophor by the lateral lobes almost filling the epigynal slits ( Fig. 463 )

Description: Male: Total length 1.71; carapace length 0.78, width 0.60.

CEPHALOTHORAX: Carapace orange, shiny, finely reticulate; margin, radiating lines and pars cephalica suffused with gray; trident mark sometimes present. Clypeus height 2. Sternum strongly suffused with dark gray. Chelicerae orange, transversely suffused with gray, excavated; seta-tipped tubercles absent; promargin three teeth, one median tooth between margins, retromargin three denticles, both margins with projection near base of fang. Cheliceral stridulatory organ ~ 29 striae, well spaced throughout. ABDOMEN: Uniformly light to dark gray. LEGS: Light yellow; leg I total length: 3.22; leg III total length: 2.26; Tm I: 0.18, Tm IV: absent. GENITALIA: Palpal retrolateral tibial and dorsal tibial apophysis absent ( Fig. 459 ). Cymbium rounded; glabrous depression present ( Fig. 459 ); cymbial turbercles absent; prolateral notch absent ( Fig. 460 ). Paracymbium apical pocket short, anterior pocket short and curved, posterior pocket small, pointed ( Fig. 459 ). Embolus tip pointed; basally enlarged, rounded with one spike and small process; apico-ventrally with numerous spikes; Fickert’s gland situated medially; ventral lamella transparent, serrated; thumb large, reaching well beyond the embolus proper ( Fig. 461 ). Embolus proper set apically, on a short horizontal ridge, of equal part ( Fig. 461 ). Anterior terminal apophysis long with a few protrusions; posterior terminal apophysis tip twisted and striated; lamella characteristica long, spiky apically, wide basally with small basal triangular extension ( Fig. 462 ).

Female: Total length 2.09; carapace length 0.81, width 0.60.

CEPHALOTHORAX: Same as in male. Chelicerae promargin six teeth, retromargin with five denticles. Cheliceral stridulatory organ ~27 striae, well spaced. ABDOMEN: Same as male. LEGS: Same as male; palpal tarsal claw absent, palpal tibia and metatarsus suffused with dark gray; leg I total length: 2.92; leg III total length: 2.18; Tm I: 0.20, Tm IV: absent. GENITALIA: Epigynum with proximal part of scape narrow, enlarging apivally; epigynal slits small and triangular; pit hook depression wide and shallow ( Fig. 463 ); lateral lobes elongated ( Fig. 464 ); stretcher absent; pit small ( Fig. 465 ). Median part of scape extremely narrow, parallel; genital pores located in middle of lateral lobes ( Fig. 465 ). Internal genitalia with a large oval ventral receptacula ( Fig. 464 ).

Other material examined: CANADA: Manitoba: Riding Mountain National Park, east escarpment, 06– 25.vi.1979, 131Ƥ, S. Miller ( CNC). New Brunswick: Kouchibouguac National Park, 12.ix.1977, 1Ƥ, G. Calderwood ( CNC). Nova Scotia: Bridgewater, 1964–1965, pitfall in oak stand, 123, S. Wright ( CNC). Saskatchewan: 4.8km S Saskatoon, 28–30.ix.1984, mesic grassland, 232Ƥ, D. Buckle ( DBC); 8km NE Saskatoon, 11.v–01.vi.1967, 173, 11–18. v.1967, 2 Ƥ, E. Gorin ( DBC); Grenfell, 12.ix.1968, 1Ƥ, W. Ivie ( DBC); Lady Lake, 05.x.1970, 1Ƥ, 24.ix.1982, 1Ƥ, 16.ix.1994, 33, ballooning, meadow and marsh, D. Buckle ( DBC); St. Denis, 04– 31.v.1995, 1032Ƥ, 31.v–21. vi.1995, 1 Ƥ, 04–24. vi.1995, 1 Ƥ, pitfall in native grassland, 04–31.v.1995, 431Ƥ, pitfalls in native grass/trees, 13–23. vii.1996, 1 Ƥ, pitfalls in cultivated land/trees, 1Ƥ, K. Pivnick ( DBC). USA: Arkansas: Cove Creek, 17.i.1961, pitfall, leaf litter in woods, 13 ( CAS); Jonesboro, 12.i.1967, 2931Ƥ, 19.i.1967, 33, 24.xi. 01.xii.1966, 253, pitfall in oak-hickory, Hite ( CAS); Prospect, 29.xi.1964, 43 ( CAS); Sumpter, Pow-11, 04.v.1963, pine-oak woods, 1Ƥ, Leslie ( CAS); Sumpter, Pow-102, 17.xi.1963, pine-oak woods, 123, Leslie ( CAS); Sumpter, Pow-108, 28.xii.1963, 1132Ƥ ( CAS); Sumpter, Pow-149, 26.i.1964, pine-oak woods, 232Ƥ, Leslie ( CAS); Sumpter, Pow-153, 12.i.1964, 13, Leslie ( CAS); Sumpter, Pow-168, 29.iii.1964, 13, Leslie ( CAS); Sumpter, Pow-262, 07.xii.1964, 1Ƥ, Leslie ( CAS); Sumpter, Pow-267, 22.xii.1964, 63, Leslie ( CAS); Sumpter, Pow-274, 05.xii.1965, 53, Leslie ( CAS); no specific localities, 07.iii.1961, 1Ƥ, 02.ii.1964, 4Ƥ, 29.xi.1964, 73, 08.iii.1965, 1Ƥ, 13.iv.1967, 1Ƥ ( CAS). North Dakota: Oliver Co., 12km E, 4.8km S of Center, 22.ix.1994, 1Ƥ, M. Johnson ( DBC); Stark Co., Richardton Schnell Ranch, 19.vii.1994, 1Ƥ, D. Mott ( DBC); Morton Co., 06– 12.vii.1966, pitfall, 2Ƥ, ( DBC). Nevada: Lincoln, 1941, 13, M. Harbaugh ( AMNH). New Mexico: 3.2km E Taos, 06.x.1965, 1836Ƥ, J., W. Ivie ( AMNH). South Dakota: 20km SE Rapid City, route 16, 1341m, 10.vii.1959, burn oak and elm litter, 1Ƥ, C. Hoff ( AMNH). Utah: City Creek Canyon, 22.v.1943, 5Ƥ ( AMNH); Salt Lake City, viii.1930, 13, W. Gertsch ( AMNH); Salt Lake City, Dry Canyon, 30.x.1932, 1Ƥ ( AMNH); Verdure, 12.v.1933, 2Ƥ, W. Ivie ( AMNH).

Distribution: Central North America, two remote localities in New Brunswick and Nova Scotia.

The following species have not been grouped. A fair number of these species occur in the south of North America and most probably are related to species from Mexico, the Carribean and even South America. A. amersaxatilis is related to Old World species of the saxatilis -group ( Saaristo & Koponen 1998: 597).

Figures

FIGURES 459 – 465. Agyneta girardi n. sp. 459 – 462, Male. 463 – 465, Female. 459. Palp, retrolateral view. 460. Palp, prolateral view. 461. Embolus, prolateral view. 462. Radical division, retrolateral view. 463. Epigynum, ventral view. 464. Internal genitalia, ventral view. 465. Internal genitalia, dorsal view.

FIGURES 450 – 458. Agyneta lophophor (Chamberlin & Ivie 1933). 450 – 454, Male. 455 – 458, Female. 450. Palp, retrolateral view. 451. Variation of tip of lamella characteristica, retrolateral view. 452. Palp, prolateral view. 453. Embolus, prolateral view (arrow points to rugose extension of the embolus). 454. Radical division, retrolateral view. 455. Epigynum, ventral view. 456. Internal genitalia, ventral view. 457. Internal genitalia, dorsal view. 458. Internal genitalia, lateral view.