Microchilus Blanchard, 1851

Jameson, Mary Liz, 2008, Review of the genus Microchilus Blanchard (Coleoptera: Scarabaeidae: Rutelinae: Geniatini), Insecta Mundi 2008 (25), pp. 1-14 : 9

Key to the species of Microchilus Blanchard

Males: Terminal sternite with apex emarginated.

Females: Terminal sternite with apex entire, not emarginated.

1. Male protarsomere II less than twice width of protarsomere I ( Fig. 15 ). Female protarsomere I subequal in length to protarsomeres II-IV combined ( Fig. 19 ); metatibia with 2 transverse, external carinae ................................................................................... M. lineatus Blanchard

— Male protarsomere II more than twice width of protarsomere I ( Fig. 16 ). Female protarsomere I subequal in length to protarsomeres II-III ( Fig. 20 ); metatibia lacking 2 transverse, external carinae ........................................................................... M. rodmani Jameson , new species

Figures

Figure 15-24. Diagnostic characters of Microchilus species. 15) Right protarsomeres of male M. lineatus, dorsal view. 16) Right protarsomeres of male M. rodmani, dorsal view. 17) Right metatibia of M. lineatus, ventral view. 18) Right metatibia of M. rodmani, ventral view. 19) Right protarsomeres of female M. lineatus, ventral view. 20) Right protarsomeres of female M. rodmani, ventral view. 21-22) Parameres of M. lineatus, dorsal view and lateral view, respectively. 23-24) Parameres of M. rodmani, dorsal view and lateral view, respectively. Scale line = 0.5 mm.