Alvarinus Blanchard, 1850

Fuhrmann, Juares & Vaz-De-Mello, Fernando Z., 2017, Macrodactylini (Coleoptera, Scarabaeidae, Melolonthinae): primary types of type species and taxonomic changes to the generic classification, European Journal of Taxonomy 350, pp. 1-71 : 14

Alvarinus Blanchard, 1850

Corminus Burmeister, 1855: 39 . Type species: Corminus canescens Burmeister, 1855 (designation: Evans 2003: 254).

Corminus – Katovich 2008: 6 (synonymy).

Type species

Alvarinus hilarii Blanchard, 1850 (designation: Evans 2003: 224).

Diagnosis

Clypeal ventral area strongly widened ( Fig. 3 A ); pronotal anterior and posterior margins not beaded ( Fig. 3 B ); prosternum anteriorly concave (similar to Fig. 12 K ); protibia with two external teeth and without spur ( Fig. 3 B ); elytral striae indistint, posterior and posterointernal margins not beaded; mesoand metafemurs of male with some long and spine-like setae ( Fig. 3 C ); metatarsomere V without spinelike setae; abdomen with intersegmental membrane VII–VIII concealed ( Fig. 3 A ).

Figures

Fig. 3. Alvarinus canescens Burmeister, 1855, ♂. A. Habitus, lateral (without some appendages). B. Head–prothorax dorsal, tarsus rotated laterally to apex. C. Metafemur. D–E. Aedeagus (lateral, parameres apex). Scale bars = 1 mm.

Fig. 12. ♂♂. A. Head–prothorax dorsal, tarsus rotated laterally to apex. B. Antenna. C. Protibia−tarsus. D−I. Aedeagus (lateral, parameres apex). J. Metatibia. K. Head−prothorax, ventral. A, F−G. Euryaspis obesa (Burmeister, 1855) comb. nov. B−E. Euryapsis gaudichaudi Blanchard, 1850. H−J. Philochloenia amata nom. nov. K. Philochloenia castaneipennis (Guérin-Méneville, 1831) comb. nov. Scale bars = 1 mm.