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 allosubtilis
Loksa 1965
Figs 79–85
, map 3
Agyneta allosubtilis
Loksa 1965
: 3
, f. 1–2. (Description Ƥ).
Type
material:
Agyneta allosubtilis
Loksa 1965
, 3
HOLOTYPE
from Central aimak, Ulan-Baator, Nuch im Bogo ul,
12km
südöstlich vom Zentrum
1550m
,
06.vii.1964
(Nr. 271). (ILC),
NOT EXAMINED
.
Diagnosis:
Males can be distinguished from all other
Agyneta
species by the leaf-like lamella characteristica ending in a small prong (
Fig. 79
). From
A. decora
by the fused tubercles of equal size (
Fig. 80
), ventral fused tubercle being larger in
A. decora
(
Fig. 65
). Females can be distinguished from most
Agyneta
by their minute pit hook depression and the tent-shaped marking on the epigynum (
Fig. 83
arrow). From
A. decora
by the straight sides of the proximal part of scape (
Fig. 83
), sinuous in
A. decora
(
Fig. 68
).
Description:
Male
:
Total length 1.13; carapace length 0.86, width 0.70.
CEPHALOTHORAX: Carapace light brown, shiny, finely reticulate; suffused with dark gray along margin, radiating lines; trident mark present. Sternum light brown suffused with dark gray. Clypeus height 3. Chelicerae light yellow-brown with transverse gray band, not excavated; fangs thick and wide; seta-tipped tubercles absent; promargin two tiny denticles, retromargin 0 denticles, both margins without projections near base of fang. Cheliceral stridulatory organ ~56 striae, narrowly spaced throughout. ABDOMEN: Uniformly dark gray. LEGS: Yellow-orange, femur, tibia and metatarsus orange; leg I total length: 2.24; leg III total length: 2.06; Tm I: 0.77, Tm IV: present. GENITALIA: Palpal retrolateral tibial apophysis rounded, smooth; dorsal tibial apophysis, rugose; one retrolateral and one dorsal trichobothria (
Fig. 79
). Cymbium triangular; glabrous depression present (
Fig. 79
); dorsal and ventral cymbial tubercles fused and smooth; prolateral notch medium (
Fig. 80
). Paracymbium apical pocket short, anterior pocket long and curved making a large cover, posterior pocket small and pointed (
Fig. 79
). Embolus tip pointed and wide, with large serrated extension retrolaterally, one small sub-apical spine; Fickert’s gland elongated situated basally; ventral lamella grooved; thumb reaching below the embolus proper (
Fig. 81
). Embolus proper set apically, ventral part slightly wider (
Fig. 81
). Radix with multiple small spikes basally; anterior terminal apophysis narrow with protrusions; posterior terminal apophysis wide; lamella characteristica large, serrated apically (
Fig. 82
).
Female
:
Total length 2.12; carapace length 0.80, width 0.57.
MAP. 3.
Localities of
Agyneta allosubtilis
(
Emerton 1882
)
, distribution based on material examined, distribution based on
Paquin
et al
. 2010
,
Agyneta perspicua
n. sp.
CEPHALOTHORAX: Same coloration as male. Chelicerae yellowish, not excavated; fangs as in male; promargin two teeth, retromargin one denticle. Cheliceral stridulatory organ ~61 striae, narrowly spaced throughout. ABDOMEN: Same as male.
LEGS
: Same as male; palpal tarsus inflated, claw absent; leg I total length: 2.00; leg III total length: 1.68; Tm I: 0.76, Tm IV: present. GENITALIA: Epigynum with wide proximal part of scape narrowing apically, sides straight and oblique; epigynal slits long and oval; pit hook depression tiny (
Fig. 83
); lateral lobes short and wide; stretcher indistinguishable (
Fig. 85
). Median part of scape short and wide; genital pores situated at base of lateral lobes pockets (
Fig. 85
). Internal genitalia with a large comma-shaped receptacula (
Fig. 84
).
Other material examined:
CANADA
:
Alberta
: Athabasca, 21.v–04.
vi.1986, 13
, 18.vi–02.
vii.1986, 13
, white spruce heath, T. Rypien, R. Holmberg (
DBC
); Caribou Mountains Wildland, Wentzel Lake, Birch point, 09– 11.
vii.2003, 1
Ƥ, pitfalls, G. Hilchie, J. Hilchie (
DBC
); Kakwa Wildland Provincial Park, Ridgeline near Deadhorse Meadows Equestrian Campground,
15–25.vi.2006
, 33, pine, spruce, rhododendron, T. Johnson (
DBC
); near Baptiste Lake,
23.v–07.vi.1988
, 33,
07–19.vi.1988
, 131Ƥ, R. Holmberg (
DBC
); Waterton Lakes National Park,
1584m
,
26.vi–03.vii.2000
, pan trap and pitfalls, lodgepole pine/aspen forest, unburned, 2739Ƥ, E. Kinsella (
DBC
); Willmore Wilderness Park, Sheep Creek fire,
1493m
,
12–20.vii.2007
, 93, G.Hilchie, D. Macaulay (
DBC
); Willmore Wilderness Park, Smoky River,
1036m
,
23–27.vi.2007
, aspen-spruce forest, 13, T. Johnson, G.Hilchie (
DBC
); Willmore Wilderness Park, Smoky River,
1036m
,
13–21.vii.2007
, aspen-spruce forest, 1Ƥ, G.Hilchie, D. Macaulay (
DBC
); Willmore Wilderness Park, Smoky River,
1493m
,
11–19.vii.2007
, meadow edge, spruce-fir, 1Ƥ, G.Hilchie, D. Macaulay (
DBC
);
9 km
ESE Exshaw,
1524m
,
17.vii–01.viii.1996
,
Pinus contorta
forest, 231Ƥ, H. Carcamo (
DBC
);
25km
SW Rocky Mtn. House,
01–16.vi.1995
, aspen forest, 13, 16.vi–07.
vii.1995, 2
Ƥ,
07– 20.vii.1995
, 231Ƥ,
20.vii–03.viii.1995
, 231Ƥ, H. Carcamo (
DBC
);
25km
SW Rocky Mtn. House,
01–16.vi.1995
, pine forest,
07–20.vii.1995
, 134Ƥ,
16.vi–07.vii.1995
, 532Ƥ, H. Carcamo (
DBC
).
British
Columbia
:
Liard Hot Springs, vi–
08.vii.1981
, pitfall, decicuous litter, C. Dondale (
CNC
).
Manitoba:
Riding Mountain National Park, Swanson Spring,
20.vi.1979
, pan trap, black spruce, 13, D.B. Lyons (
CNC
); Riding Mountain National Park, Clear Lake, 0
8–28.vi.1979
, pan trap, beaver meadow, 13, S. J. Miller (
CNC
).
Newfoundland:
Gallants,
15.vii.1984
, moss in balsam fir, 1Ƥ, L. Hollett (
CNC
); North Twin Lake,
14.viii.1984
, moss in forest, 1Ƥ, G. Costello (
CNC
).
Ontario:
Sproule Bay, Lake Opeongo, Algonquin Park, 26.vi–07.
vii.1945, 2
Ƥ, W. Ivie, Kurata (
AMNH
).
Saskatchewan:
Anglin Lake, 25–30.
vi.1995, 13
,
25–30.vi.1995
, basin fen surronding
Picea mariana
woods, 43, D. Buckle (
DBC
); St. Denis,
04–24.vi.1996
, cultivated/trees, 13, K. Pivnick (
DBC
).
USA
:
Alaska:
Alaska Hwy., 17.5 km S Sikanni River,
31.v–08.viii.1981
, spruce-pine forest, 2Ƥ, C. Dondale (
CNC
); Alaska Hwy., mile post no.1004,
viii.1968, 1
Ƥ, W. Ivie (
AMNH
).
Maine:
10.1km NE Soubunge Mtn.,
15.vi.1978
, pitfall, spruce-fir forest, 13, D. Jennings, M.W. Houseweart (
CNC
).
Wyomin
g: Grand Teton National Park,
03.vii.1968
, 131Ƥ,
05.vii.1968
, 13,
26.vii.1968
, 13, D. Lowrie (
AMNH
).
Distribution:
Holarctic