Calodera, Mannerheim, 1830

Assing, Volker, 2008, The genus Calodera Mannerheim in Canada (Insecta, Coleoptera, Staphylinidae, Aleocharinae), ZooKeys 2 (2), pp. 203-208 : 207-208

Key to the Nearctic species of Calodera

Repeated requests for a loan of the type material of C. infuscata , which is deposited in the Purdue Entomological Research Collections (Lafayette, Indiana), have remained unanswered, so that the diagnosis of this species relies exclusively on the (few) details specified in the original description. The possibility that C. infuscata and C. caseyi are, in fact, conspecific cannot be ruled out.

1. Small species; body length <2.3 mm ..........................................................2

– Larger species; body length> 2.7 mm ......................................................... 3

2. Head without posterior constriction. Known distribution confined to Pennsylvania ( USA)...................................................................... C. caseyi Assing

– Presence of posterior constriction of head unknown. Recorded only from Indiana ( USA) ............................................................. C. infuscata Blatchley

3. Antennae longer; antennomeres VI-X approximately 1.5 times as wide as long ( Fig. 3 ). Median lobe of aedeagus as in Figs 6-9 . Eastern Canada and northeastern USA (Rhode Island) ( Map 1 ) .................... C. parviceps (Casey)

– Antennae shorter; antennomeres VI-X approximately twice as wide as long. Manitoba ( Canada) ( Map 1 )...................................................... Calodera sp.

Figures

Map 1. Distribution of Calodera parviceps (filled circles) and Calodera sp. (open circle) in eastern North America.

Figs 1-10. Calodera parviceps. 1: habitus; 2: forebody; 3: antenna; 4: abdominal segments III-VII; 5: male sternite VIII; 6: median lobe of aedeagus in lateral view; 7: apical part of median lobe of aedeagus in lateral view; 8-9: apical part of median lobe of aedeagus in ventral view; 10: spermatheca. Scales: 1: 1.0 mm; 2, 4: 0.5 mm; 3, 5: 0.2 mm; 6-10: 0.1 mm.