Archedinus Morón & Krikken, 1990

Seidel, Matthias, Arriaga-Varela, Emmanuel & Sousa, Rafael, 2018, Catalogue of the Incini with the description of the first Archedinus species from Honduras (Coleoptera: Scarabaeidae: Cetoniinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 58 (2), pp. 389-405 : 391

Archedinus Morón & Krikken, 1990

Type species. Archedinus relictus Morón & Krikken, 1990: 76 .

Diagnosis. This genus is distinguished from other members of the tribe Incini by the following combination of characters: body length 17–27 mm, dorsal integument shiny, dark-brown to black; clypeal anterior margin sinuated, male with short clypeal horn or elevated clypeal margin lacking lateral or medial clypeal horns (present in Golinca , Inca and Pantodinus ); eyes with strong supraocular ridges; male with antennal club longer than pedicel and funicle together, mentum with anterior margin sinuate or rounded; pronotum coarsely punctate, without posterior impression; anterior prosternal process projected, longer than procoxal length, elytra deeply striate without waxy surface; pterothoracic setae sparse; profemur with a preapical projection; protibia with 3 external teeth; meso- and metatibiae expanded, tridentate; aedeagus with parameres simple or bifurcate.

Archedinus is most similar to Pantodinus due to the sinuate antero-ventral clypeal margin and the well marked elytral striae. However, Archedinus can be distiguished by the strong supraocular ridges, the prosternal process being longer than the procoxal anterior face, and by the sparse setae on the pterosterna (MORÓN & VAZ DE MELLO 2007).

The third stage larva of A. relictus was diagnosed from other Incini ( MORÓN 1995) by having mandibles without a stridulatory area; premolar area on left mandible with 2 teeth; dorsoepicranial setae absent; maxillary stridulatory area with 12 irregular, non-pointed teeth; last antennomere with 7–13 dorsal sensory spots; tarsal claws with 2 internal preapical setae; spiracle respiratory plates with irregular, ameboid “holes”; dorsal and ventral abdominal sclerites with long setae.