Caenoscelini

Caterino, Michael S., Leschen, Richard A. B. & Johnson, Colin, 2008, A New Genus of Caenoscelini (Cryptophagidae: Cryptophaginae) from California, with Two New Species, The Coleopterists Bulletin 62 (4), pp. 509-523 : 509-523

Key to the World Genera of Caenoscelini and species of Renodesta

1. Body elongate; pronotum parallel-sided; prosternal process not vaulted; antennal club 3-segmented.......................................... Caenoscelis

1. 9 Body oval; pronotum widest at base; prosternal process vaulted or not; antennal club 1- or 2-segmented.............................................. 2

2. Antennal club 2-segmented.................................................... 3

2. 9 Antennal club 1-segmented.................................................... 4

3. Head lacking genal carina and transverse foveae.................. Sternodea

3. 9 Head with genal carina and transverse foveae.................... Himascelis

4. Eye reduced to a single ommatidium ( Fig. 4E ); prosternum lacking foveae ( Fig. 3B ); pronotal disk with transverse stria ( Fig. 4F ) ( Renodesta )....... 5

4. 9 Eye composed of three ommatidia; prosternum with foveae; pronotal disk lacking transverse stria............................................... Dernostea

5. Prosternal process strongly narrowed toward front ( Fig. 5B )... R. stephani

5. 9 Prosternal process narrowed only slightly toward front ( Fig. 5D )................................................................................ R. ramsdalei

Figures

Fig. 4. Generic characters of Renodesta spp. A. Mouthparts, ventral view. B. Antennal club (fused antennomeres 10 + 11), ventral. C. Antennal groove in prosternum, ventral. D. Abdomen, ventral. E. Head, anterolateral. F. Pronotum, dorsal. G. Metatarsus, lateral. All scale bars 100 Mm.

Fig. 3. SEM micrographs of Renodesta spp. A. R. stephani, dorsal habitus. B. R. ramsdalei, ventral. C. R. stephani, lateral.

Fig. 5. Species level characters of Renodesta spp. A. Antenna of R. stephani, dorsal view. B. Prosternum of R. stephani, ventral. C. Antenna of R. ramsdalei, dorsal. D. Prosternum of R. ramsdalei ventral. All scale bars 100 Mm.