A review of the Holarctic genus Tmeticus Menge, 1868 (Araneae, Linyphiidae), with a description of a new genus
Author
Marusik, Yuri M.
Author
Koponen, Seppo
text
ZooKeys
2010
59
15
37
http://dx.doi.org/10.3897/zookeys.59.508
journal article
http://dx.doi.org/10.3897/zookeys.59.508
1313-2970-59-15
Tmeticus ornatus (Emerton, 1914)
Figs 1721
-2245-
485154
Gongylidium ornatus
Emerton 1914: 263
, pl. 8, f. 3 (♂).
Tmeticus ornatus
:
Bishop and Crosby 1935: 227
, pl. 18, f. 22-26 (♂♀).
Tmeticus ornatus
:
Paquin and
Duperre
2003: 122
, f. 1284-1286 (♂♀).
Material examined.
CANADA: 4♂ 4♀ (ZMMU), Saskatchewan, Lady Lake, sedge tops - flooded marsh, 13-15.04.1971 (D.J. Buckle); 3♂ 3♀ (ZMUT), same locality, marsh, late April, 1978 (J.V. Buckle).
Diagnosis.
Differs from
Tmeticus affinis
, which also occurs in the Nearctic Region, by the carapace colour (black cephalic region and red-orange thoracic area in
Tmeticus ornatus
, carapace uniformly brown in
Tmeticus affinis
). The males are easily separated by their tibial apophyses (one apophysis with a claw-like processes in
Tmeticus affinis
and two separate apophyses in
Tmeticus ornatus
); the females have distinctly different epigynes.
Description
.
♂ 2.5-3.3, ♀ 2.8-35. TmI 0.73-0.78. Carapace orange with darker cephalic region. Abdomen dark. Palp as in Figs 45-46, 51, 54. Epigyne as in Figs 17, 47-48.
Distribution.
This species has a trans-Nearctic distribution, recorded from British Columbia to Quebec and south to New York (
Buckle et al. 2001
). It does not occur north of 55°N and has a more southern distribution in comparison to the Palaearctic
Tmeticus affinis
,
Tmeticus tolli
and
Tmeticus nigriceps
.