Chlaenius (Achlaenius) tristis tristis (Schaller, 1783)

Kabak, I. I. & Liang, H. - B., 2021, An annotated list of the genus Chlaenius Bonelli, 1810 (Coleoptera: Carabidae) of Xinjiang Uygur Autonomous Region of China, Far Eastern Entomologist 429, pp. 12-28 : 21

publication ID	https://doi.org/ 10.25221/fee.429.3
publication LSID	lsid:zoobank.org:pub:3B54F070-AD8F-438C-8E39-6817F0A874C2
persistent identifier	https://treatment.plazi.org/id/1019B56D-964C-E565-FF0B-0D4FFDDBB3DC
treatment provided by	Felipe
scientific name	Chlaenius (Achlaenius) tristis tristis (Schaller, 1783)
status

Treatment

Chlaenius (Achlaenius) tristis tristis (Schaller, 1783) View in CoL

Fig. 7 View Figs 4–8

MATERIAL EXAMINED. China: Xinjiang, Tacheng City, Forest Park, light trap,

46.74887°N, 82.97312°E, h= 546 m, 18.VII 2007, 1 ♂, leg. Liu Ye ( IOZ); Xinjiang, S env. of GoogleMaps

Urumqi City, Wulanbai, 43°41'20"N, 87°36'00"E, h= 930 m, 30.VI 2001, 3 ♂, 6 ♀, leg. I.I.

Kabak (cBK); Xinjiang, S slope of Khalyktau Mt. R., Bay county, N of Terekmeikon,

42°01'55"N, 81°31'46"E – 42°03'36"N, 81°30'52"E, h= 1765–1810 m, 10.VII 2006, 1 ♀, leg.

I.I. Kabak (cBK).

NOTES. Chlaenius tristis formally belonged to the subgenus Chlaeniellus (type species:

Carabus vestitus Paykull, 1790 ). However, it differs from all members of this subgenus studied by us, including its type species Ch. vestitus Paykull, 1790 , in having different structure of the apical gonoxite. In Ch. tristis , the apical gonocoxite is glabrous on ventral surface, and armed with three spines on outer margin ( Fig. 7 View Figs 4–8 ), while in the Chlaeniellus species, the apical gonocoxite is covered ventrally with multiple stout spines, its outer margin with 4 or more spines ( Fig. 6 View Figs 4–8 ). Additionally, upper side of pronotum is rugose in Ch. tristis ,

similar to the members of the subgenus Achlaenius , including its type species Ch. micans

(Fabricius, 1792). Therefore, Ch. tristis is transferred here from subgenus Chlaeniellus to the subgenus Achlaenius .

DISTRIBUTION. This Transpalaearctic species is recorded from China for the first time.

The nominotypical subspecies occupies the western part of species range, including Middle

Asia (Kryzhanovskij et al., 1995; Kirschenhofer, 2017). In Xinjiang, Ch. t. tristis is known from the Tacheng City, Urumqi vicinities and Baicheng County.

HABITAT. The species is common on banks of the rivers and lakes on plains and foothills at elevations between 500 and 1900 m.