Cyrtusa, Erichson, 1842

Peck, Stewart B. & Cook, Joyce, 2013, Systematics and distributions of the genera Cyrtusa Erichson, Ecarinosphaerula Hatch, Isoplastus Horn, Liocyrtusa Daffner, Lionothus Brown, and Zeadolopus Broun of the United States and Canada (Coleoptera: Leiodidae: Leiodinae: Leiodini), Insecta Mundi 2013 (310), pp. 1-32 : 3

publication ID

https://doi.org/ 10.5281/zenodo.5193714

publication LSID

lsid:zoobank.org:pub:1CC5FBEF-1373-444C-AA1C-0E80445A7B6E

DOI

https://doi.org/10.5281/zenodo.5195817

persistent identifier

https://treatment.plazi.org/id/146C8794-FFFE-B937-FF6F-AF54FA08FB01

treatment provided by

Felipe

scientific name

Cyrtusa
status

 

Key to the North American “ Cyrtusa View in CoL ” and “ Leiodes ” genus-groups and their genera in the continental United States and Canada

1. Mesosternum vertical between mesocoxae; the “ Cyrtusa View in CoL genus group” ..................................... 2

– Mesosternum oblique between mesocoxae; the “ Leiodes View in CoL genus group” ...................................... 7

2(1). Antenna with 11 antennomeres, with interrupted 5-antennomere club, antennomere 8 narrow and disk-shaped .......................................................................................................................... 3

– Antenna with 10 antennomeres, with compact 3- or 4-antennomere club ................................. 5

3(2). Mesosternum with a median carina; each mandible with a single median tooth........................ ...................................................................................................................... Anogdus LeConte View in CoL

– Mesosternum not carinate; left mandible may have a small tooth, right mandible edentate... 4

4(3). Underside of head without antennal grooves; anterior margin of clypeus straight or evenly curved; both mandibles lack prominent teeth; male mesotibia with process on inner apical margin ........................................................................................................ Liocyrtusa Daffner View in CoL

– Underside of head usually with antennal grooves; anterior margin of clypeus clearly sinuous; left mandible in anterior third usually with one or two small teeth; male mesotibia without process on inner apical margin .................................................................... Lionothus Brown View in CoL

5(2). Tibiae narrow; metatibia with spines on ventral side but not on outer margin; right mandible in anterior third with blunt tooth, left mandible edentate ........................ Cyrtusa Erichson View in CoL

– Tibiae widened, shovel-like; outer margin of metatibia strongly spined; left mandible with large tooth at basal third, right mandible edentate........................................................................... 6

6(5). Antennal club with 4 antennomeres ............................................................. Zeadolopus Broun View in CoL

– Antennal club with 3 antennomeres ................................................................. Isoplastus Horn View in CoL

7(1). Mesosternum with a median longitudinal carina ........................................... Leiodes Latreille View in CoL

– Mesosternum unmodified, not carinate ............................................ Ecarinosphaerula Hatch View in CoL

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Leiodidae

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