Chlaenius BONELLI 1810
Creators: name: Kabak, I. I.
name: Liang, H. - B.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Chlaenius

description: Key to species and subspecies of the genus Chlaenius from Xinjiang   
 1. Ultimate palpomeres triangular, with numerous long setae.............................................................................................................  Ch. (Epomis) circumscriptus  (Duftschmid, 1812)   
– Ultimate palpomeres fusiform, glabrous or with sparse short setae..................................... 2  
2. Elytra glabrous, at most, sparsely pubescent on intervals 8-9 and near apex...................... 3  
– Elytra densely pubescent throughout.................................................................................... 4  
 3. Elytral intervals 8 and 9 yellow. Antenna and legs unicolored, yellowish....................................................................................................  Ch. (Chlaenites) spoliatus  (P. Rossi, 1796)   
 – Only elytral interval 9 yellow, Antenna and legs bicolored, scapus and tibia partly yellowish, antennomeres 2-11, femora and tarsi dark........................................................................................................................................  Ch. (Chlaenites) inderiensis  Motschulsky, 1850   
 4. Dorsal surface of tarsi densely pubescent; apical gonocoxite bifid.......................................................................................................  Ch. (Trichochlaenius) steveni  (Quensel, 1806)   
– Dorsal surface of tarsi glabrous or very sparsely pubescent; apical gonocoxite simple....... 5  
 5. Labial penultimate palpomere, in addition to the apical setae, with two or more setae in the middle of inner side.......................  Ch. (s. str.) flavicornis  Fischer von Waldheim, 1842   
– Labial penultimate palpomere glabrous in the middle of inner side, only with apical setae............................................................................................................................................... 6  
 6. Pronotum with a lateral seta located slightly distant from hind angle, pronotal surface markedly transversely rugose. Apical gonocoxite along outer margin with two spines...............................................................................  Ch. (Achlaenius) tristis tristis  (Schaller, 1783)   
– Pronotum with lateral seta located on hind angle, surface of the pronotum separately punctate or slightly rugose. Apical gonocoxite with four or more spines along outer margin.............................................................................................................................................. 7  
 7. Pronotum unevenly punctate: apical half very sparsely, basal half rather densely. Lateral margins of pronotum slightly convergent to the base. Palpi, antenna and legs completely black.................................................................  Ch. (Agostenus) alutaceus  Gebler, 1829   
– Pronotum evenly punctate; if sparsely punctate, its lateral margins distinctly convergent to the base. Palpomeres, antennomeres and legs at least partially yellow or brown, not completely black....................................................................................................................... 8  
8. Pronotum densely punctuate................................................................................................ 9  
– Pronotum sparsely punctate, with large smooth areas........................................................ 12  
9. Basal angles of pronotum rounded.................................................................................... 10  
– Basal angles of pronotum more or less sharp..................................................................... 11  
 10. Head and pronotum with blue luster, legs dark brown..................................................................................................................  Ch. (Chlaeniellus) semenowi  Tschitschérine, 1896   
 – Head and pronotum with green and/or coppery luster, legs, at least partly, pale..................................................................................  Ch. (Chlaeniellus) nigricornis  (Fabricius, 1787)   
 11. Legs, at least partly, and antennomere 3 dark.......................................................................................................................................  Ch. (Chlaeniellus) melampus  Ménétriés, 1849   
 – Legs and antennomere 3 pale.................  Ch. (Chlaeniellus) chrysothorax  Krynitzky, 1832   
 12. Elytral interval 9 and elytral apex yellow............................................................................................................................................  Ch. (Chlaeniellus) extensus  Mannerheim, 1825   
 – All elytral intervals black with slightly coppery luster, at most, margins of elytra yellow......................................................................  Ch. (Chlaeniellus) tenuilimbatus  Ballion, 1871
description: Published as part of 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, pp. 12-28 in Far Eastern Entomologist 429 on pages 24-25, DOI: 10.25221/fee.429.3, http://zenodo.org/record/7165884