Agyneta picta ( Chamberlin & Ivie 1944 )

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 : 86-89

Agyneta picta ( Chamberlin & Ivie 1944)

Figs 254–264 , map 18

Meioneta picta Chamberlin & Ivie 1944: 89 , f. 151–152. (Description Ƥ). Agyneta picta Buckle et al. 2001: 101 (Transferred from Meioneta ).

Type material: Meioneta picta Chamberlin & Ivie, 1944 , 3 HOLOTYPE, Ƥ ALLOTYPE from Georgia, 3 miles S.E. Savannah, W 81º 4’: N 32º 4’, April 8, 1943 ( AMNH). EXAMINED.

Diagnosis: Males and females can be distinguished by their abdominal patterns ( Figs 258–260 ). From all other species, males are diagnosed by their narrow, elongate, ventral cymbial tubercle ( Fig. 255 ) and their snake tongueshaped lamella characteristica ( Fig. 254 ). From closely related species A. flax by their elongated posterior pocket of the paracymbium ( Fig. 254 ), spine-like in the latter ( Fig. 265 ). Females are diagnosed from all other Agyneta by the narrow proximal part of scape, enlarging and not reaching the base of the epigynum ( Fig. 261 ).

Description: Male: Total length 1.55; carapace length 0.70, width 0.53.

CEPHALOTHORAX: Carapace yellow, shiny, finely reticulate; margin, radiating lines strongly suffused with dark gray; trident mark often present. Sternum strongly suffused with dark gray. Clypeus height 3. Chelicerae yellow-orange, excavated; ~ 9 seta-tipped tubercles; promargin four teeth, retromargin three denticles, both margins with projection at base of fang. Cheliceral stridulatory organ ~ 58 striae, narrowly spaced throughout. ABDOMEN: Elongated, coloration off-white with large middle band flank by dark blackish bands ( Fig. 258 ). LEGS: Light yellow, femurs with retrolateral and prolateral with dark blackish line; leg I total length: 2.46; leg III total length: 1.69; Tm I: 0.22, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis large and rugose; dorsal tibial apophysis absent; two retrolateral and one dorsal trichobothria ( Fig. 254 ). Cymbium triangular; glabrous depression present ( Fig. 254 ); dorsal cymbial turbercle small, pointed and smooth; ventral cymbial tubercle elongated, rounded and smooth; prolateral notch shallow ( Fig. 255 ). Paracymbium apical pocket short, anterior pocket short and curved, posterior pocket wide and pointed ( Fig. 254 ). Embolus tip rounded, thin; Fickert’s gland basal, slightly enlarged; ventral lamella transparent, pointed; thumb short, reaching below the embolus proper ( Fig. 256 ). Embolus proper set apically, small ( Fig. 256 ). Anterior terminal apophysis short with numerous short protrusions, with a small and a large well sclerotized processes; posterior terminal apophysis with rounded, wide, rugose tip; lamella characteristica long and wide, ending in two large points and a large transparent extension with long protrusions ( Fig. 257 ).

MAP. 18. Localities of Agyneta picta ( Chamberlin & Ivie 1944) , Agyneta flax n. sp., Agyneta barfoot n. sp.

Female: Total length 1.53; carapace length 0.64, width 0.48.

CEPHALOTHORAX: Coloration as in male. Chelicerae promargin four teeth, retromargin four denticles. Cheliceral stridulatory organ, ~52 striae, narrowly spaced. ABDOMEN: Pattern variable, uniformly off-white or with apical dark mark and a broken chevron basally ( Fig. 259 ) or else with median, elongated mark and one chevron basally ( Fig. 260 ). LEGS: Coloration as male; palpal tarsal claw absent, palpal tibia and metatarsus suffused with dark gray; leg I total length: 2.21; leg III total length: 1.55; Tm I: 0.22, Tm IV: absent. GENITALIA: Epigynum with proximal part of scape anteriorly narrow, enlarging (2x); epigynal slits very large; pit hook depression absent ( Fig. 261 ); lateral lobes very long; stretcher small; pit not observed ( Figs 262, 264 ). Median part of scape short and narrow; genital pores situated at base of lateral lobes pockets ( Fig. 263 ). Internal genitalia with oval ventral receptacula, dorsal receptacula oval and horizontally positioned ( Figs 262, 263 ).

Other material examined: USA: Florida: 3.2km S Orange City, 09.xii.1962, 3311Ƥ, W. Ivie ( AMNH); 4.8km NW Maitland, 10.xii.1962, 132Ƥ, W. Ivie ( AMNH); 12.8km W Gainesville, 28.iii.1957, 132Ƥ, W. Gertsch, R. Forster ( AMNH); 16km W Gainesville, 14.ii.1942, 131Ƥ ( AMNH); Bahia Honda Key, 13.xii.1986, forest litter, beach ridge, 2Ƥ, S. Peck, J. Klimaszewski ( AMNH); Big Torch Key, SW ¼, S12, 19.xi.1985- 26.ii.1986, 131Ƥ, 25.ii–05. vi.1986, 13, 05.vi–28.viii.1986, 631Ƥ, malaise-FIT in hammock forest, S., J. Peck ( AMNH); Big Pine Key (east end), 13.xii.1962, 1Ƥ, W. Ivie ( AMNH); Big Pine Key, Watsons Hammock, 04.xi.1984, 1Ƥ, 05.xi.1984 – 03.iii.1985, 23, 03.v–03.viii.1985, 532Ƥ, 01.viii–17.xi.1985, 231Ƥ, 17.xi.1985 – 25.ii.1986, 3433Ƥ, 23.ii–03.vi.1986, 3436Ƥ, 03.vi–27.viii.1986, 532Ƥ, 28.viii–13.xii.1986, 63, 14–21.xii.1986, 132Ƥ, malaise-FIT in hardwood hammock forest S., J. Peck ( AMNH); Big Pine Key, S1, T67S, R29E, 17.x.1985 – 25.ii.1986, malaise-FIT in cactus-hammock forest, 431Ƥ, S., J. Peck ( AMNH); Chekkika State Recreation Area, 50 km SW Miami, 15.xi.1985 – 24.ii.1986, malaise-FIT in hammock forest, 43, S., J. Peck ( AMNH); Deerfield Beach, 17.vii.1959, Pinus claura debris, 1Ƥ, H. Denmark ( AMNH); Everglades National Park, 1.5 km NW Royal Palm, 01.xi.1984 – 03.iii.1985, 632Ƥ, 15.xi.1985 – 24.ii.1986, 2433Ƥ, malaise-FIT in hardwood hammock forest, S., J. Peck ( AMNH); Everglades National Park, Royal Palm Hammock, 03.iii–28. iv.1985, 13, 02.v–02.viii.1985, 28317Ƥ, 28.vii–15.xi.1985, 33, malaise-FIT in hardwood hammock forest S., J. Peck ( AMNH); Everglades National Park, Palma Vista Hammock, vii.1981, malaise, 18314Ƥ, S. Peck ( CNC); FatDeer Key, 02.viii– 16. xi.1985, 1 Ƥ, 24.ii–04. vi.1986, 13, 31.viii–15. xii.1986, 1 Ƥ, 18.xi.1985 – 25.ii.1986, 134Ƥ, malaise-FIT in hammock forest S., J. Peck ( AMNH); Gainesville, Newman’s Lake, 13.vi.1935, 233Ƥ, W. Ivie ( AMNH); Gainesville, Newman’s Lake, 28.iii.1957, 4Ƥ, W. Gertsch, R. Forster ( AMNH); Gainesville, W of Newman’s Lake, 12ii.1942, 131Ƥ ( AMNH); Key Largo, Pennekamp State Park, 16.xi.1985 – 24.ii.1986, 832Ƥ, 22.ii–02. vi.1986, 13, 02.vi–26.viii.1986, 232Ƥ, 27.viii–12.xii.1986, 331Ƥ, malaise-FIT in hammock forest S., J. Peck ( AMNH); Long Key State Recreation Area, 31.vii.1981, xeric scrub-leaf, 131Ƥ, D. Ubick ( DUC); No name Key, 19.xi.1985 – 25.ii.1986, 23, 23.ii–03. vi.1986, 13, 03.vi–27.viii.1986, 83, 28.vii–13.xii.1986, 33, malaise-FIT in hammock forest, S., J. Peck ( AMNH); Ocala National Forest, between Ocala and Umatilla, 14.vi.1935, 13, W. Ivie ( AMNH); South Miami, 7900 SW 176th street, Old Cutler Hammock, 21.ii–01.vi.1986, 1037Ƥ, malaise-FIT in hammock forest, S., J. Peck ( AMNH); South Miami, Deering Estate Park, SW 167 street and SW 72 avenue, 21.ii– 01.vi.1986, 2036Ƥ, 01.vi–25.viii.1986, 1931Ƥ, 26.vii–11.xii.1986, 83, malaise-FIT in old hammock, S., J. Peck ( AMNH); Sugarloaf Key, Kitchings, 19.xi1985– 26.ii.1986, malaise-FIT in hammock forest, 13, S., J. Peck ( AMNH); Sugarloaf Key, SW 1/4, S23, 05.viii–19. xi.1985, 23, 26.ii–06.vi.1986, 532Ƥ, 06.vi–29.viii.1986, 631Ƥ, 29.viii–14.xii.1986, 33, malaise-FIT in hardwood hammock forest, S., J. Peck ( AMNH); Vaca Key, Marathon, 31.viii–15.xii.1985, malaise-FIT in hammock forest, 13, S., J. Peck ( AMNH).

Distribution: Southeast USA.

Figures

FIGURES 254 – 264. Agyneta picta (Chamberlin & Ivie 1944). 254 – 258, Male. 259 – 264, Female. 254. Palp, retrolateral view. 255. Palp, prolateral view. 256. Embolus, prolateral view. 257. Radical division, retrolateral view. 258. Habitus, dorsal view. 259. 260. Abdomen, dorsal view. 261. Epigynum, ventral view. 262. Internal genitalia, ventral view. 263. Internal genitalia, dorsal view. 264. Internal genitalia, lateral view.

FIGURES 265 – 273. Agyneta flax n. sp. 265 – 269, Male. 270 – 273, Female. 265. Palp, retrolateral view. 266. Palp, prolateral view. 267. Embolus, prolateral view. 268. Radical division, retrolateral view. 269. 270. Abdomen, dorsal view. 271. Epigynum, ventral view. 272. Internal genitalia, ventral view. 273. Internal genitalia, dorsal view.