Decamerini Crowson, 1964

Kolibac, Jiri, 2013, Trogossitidae: A review of the beetle family, with a catalogue and keys, ZooKeys 366, pp. 1-194 : 103-104

Tribe Decamerini Crowson, 1964

Decamerini Crowson, R. A. 1964a: 287.

Type genus:

Decamerus Solier, 1849

Barron, J. R. 1975: 12 (syn. Decamerinae = Peltinae ). Kolibáč, J. 2006: 127 (diagnosis, stat. n.). Lawrence, J. F. & Newton, A. F., Jr. 1995: 868 ( Decamerinae ). Ślipiński, S. A. 1992: 442, 460 (key) ( Decamerinae )

Remarks.

Since it was established ( Crowson 1964a), Decamerinae has always been connected with Peltidae (= Peltinae ) in the works of a variety of authors. Unfortunately, the single larva described to date ( Crowson 1964a) was not associated with adults. It possesses some general features of Lophocaterinae (mandible with long lacinia mandibulae, cranium with characteristic gular area) but it differs in having curved (cucujoid) frontal arms and in the absence of a median process between the urogomphi. The larva of Eronyxa expansus is evidently lophocaterine ( Tait et al. 1990); however, the adults of Eronyxa and the present decamerins are similar in morphology and chiefly of floricolous habit. Two character analyses ( Kolibáč 2006, 2008) placed Eronyxa on the border between Lophocaterini and Decamerini . Although the latter genus is classified within Lophocaterini herein, I feel its true relationship lies with Decamerini . This issue should be re-examined, although not before an indisputable larva of Chilean Decamerini is found and/or reared.

Key to genera

1	Front coxal cavities completely externally closed; tarsal claws split into two almost identical parts	Antixoon
-	Front coxal cavities externally open or not completely closed; tarsal claws with large denticle (but shorter than outer claw)	2
2	Antenna 10-segmented; tegmen composed of one part; front coxal cavities open (or closed to 3/4)	Decamerus
-	Antenna 11-segmented; tegmen composed of three parts; front coxal cavities nearly closed	Diontolobus