Myrmica transsibirica

As its name implies, this species is widespread species in Siberia, living at a wide range of altitudes from sea level to 2000 m. Usually it lives in various kinds of forests, but prefers light, sparse and warm ones; it also can be found among shrubs and in steppe-like habitats. Nests are usually built in the soil, often under stones. Nuptial flights occur August-September. (Radchenko and Elmes 2010)

Identification
Radchenko and Elmes (2010) - A member of the excelsa complex of the lobicornis species group. It has a feature characteristic for genus Tetramorium but very rare in genus Myrmica: the lateral portion of clypeus is raised into a sharp ridge in front of the antennal insertions, so that antennal sockets are distinctly separated from the clypeal surface. Only two other Myrmica species have this feature, Myrmica excelsa and Myrmica tamarae. The shape of scape of M. transsibirica is quite different from that of M. excels a being distinctly narrower at the bend than on its midlength (seen in profile), and the vertical (shorter) part has no longitudinal groove and lateral ridges (seen in front). It is most similar to M. tamarae by the shape of its head, frontal lobes and antennal scape, but differs from it by less coarser rugosity on the frons, having > 13 rugae level with the eyes vs. not more 10 sinuous rugae in M. tamarae.

Key to Myrmica of species of East Siberia, Russian Far East, Mongolia, Korean Peninsula, northern China, and Japan

Distribution
South Siberia (to the west until Kuznetsky Alatau), Russian Far East, north-east of China, Korean Peninsula, Japan (Hokkaido).

Distribution based on Regional Taxon Lists
Palaearctic Region: Democratic Peoples Republic of Korea, Mongolia, Republic of Korea, Russian Federation.

Nomenclature

 * carinata. Myrmica carinata Kupyanskaya, 1990: 114, figs. 16, 19, 20 (w.q.m.) RUSSIA. [Junior primary homonym of carinata Smith, F. 1859a: 148, above.] Replacement name: taediosa Bolton, 1995b: 284.
 *  transsibirica. Myrmica transsibirica Radchenko, 1994h: 212, figs. 23-32 (w.q.m.) RUSSIA. Senior synonym of taediosa: Radchenko & Elmes, 2010: 308.
 * taediosa. Myrmica taediosa Bolton, 1995b: 284. Replacement name for carinata Kupyanskaya, 1990: 114. [Junior primary homonym of carinata Smith, F. 1859a: 148.] Junior synonym of transsibirica: Radchenko & Elmes, 2010: 308.

Type Material
Myrmica carinata

One worker syntype in, one worker syntype in. specimen labelled “Aru,” specimen without data.

The card on which the specimen is mounted has been cut in half at some time in the past and originally had a second worker. The apices of the legs of this worker are still visible on the card, to the left of the entire specimen; the specimen is this maimed worker.

Etymology
Radchenko and Elmes (2010) - a combination of the Latin word trans = across or over, with the name Siberia, to indicate it is widespread throughout Siberia.