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
Author
Dupérré, Nadine
text
Zootaxa
2013
3674
1
1
189
journal article
10.11646/zootaxa.3674.1.1
9c8e7b58-7cc0-407f-a8e9-d76311dcd290
1175-5326
283954
981F80ED-96D7-40C7-8A3C-677954416A2E
Agyneta erinacea
new species
Figs 197–201
, map 12
Type
material:
Male
holotype
from California, Sonoma County, 1.5mi E Healdsburg on Bailhache Avenue,
13 January 1991
, mixed woodland under volcanic rocks, D. Ubick, W. Savary, K. Dabney (
CAS
).
EXAMINED
.
Etymology:
The specific name is an adjective in reference to the long spines arising from the retro-ventral surface of the embolus.
Diagnosis:
Male
are diagnosed from all
Agyneta
by the pointed, strongly rugose dorsal cymbial tubercle (
Fig. 198
), from members of the species group by the short spine-like posterior pocket of the paracymbium (
Fig. 197
) absent, rounded or elongated in other species of the group (
Figs 172
,
185
,
195
,
202
,
209
).
Description:
Male
:
Total length 2.32; carapace length 1.05, width 0.80.
CEPHALOTHORAX: Carapace light brown, shiny, finely reticulate; lightly suffused with dark gray along radiating lines, pars cephalica and margin. Sternum completely suffused with dark gray. Clypeus height 3. Chelicerae orange, not excavated; promargin three denticles, retromargin two tiny denticles. Cheliceral stridulatory organ easily visible ~36 striae, well spaced. ABDOMEN: Dark gray, with off-white marks (
Fig. 201
). LEGS: Light yellow; leg I total length: 4.39; leg III total length: 2.93; Tm I: 0.25, Tm IV: absent. GENITALIA: Palpal retrolateral tibial apophysis reduced, small and triangular; dorsal tibial apophysis rugose; one retrolateral and one dorsal trichobothria (
Fig. 197
). Cymbium with retrolateral fold; glabrous depression present (
Fig. 197
); dorsal cymbial tubercle rugose and pointed; ventral tubercle small, triangular; prolateral notch shallow (
Fig. 198
). Paracymbium apical pocket small, anterior pocket absent, posterior pocket spine-like (
Fig. 197
). Embolus tip pointed; tiny spines ventrally; large spikes retro-ventrally; Fickert’s gland medial, bulbous; ventral lamella basally enlarged into a plate with spines, extending on the retrolateral side of the embolus all the way to the embolus proper, with a row of spines; thumb just reaching the base of embolus proper (
Fig. 199
). Embolus proper set apically, anterior part serrated reaching the tip of the embolus (
Fig. 199
). Anterior terminal apophysis long, with numerous, long plumose protrusions; posterior terminal apophysis twisted with one small spine basally; lamella characteristica basally with a twisted branch and a long, dentate curved projection (
Fig. 200
).
Female
:
Unknown.
Other material examined:
USA
:
California
: San Ardo, 1955, 13,
McDonald
, Blodget (
AMNH
).
Distribution:
California,
USA
.