Ochodaeus, Dejean, 1821

Paulsen, M. J., 2019, New species of Ochodaeus Dejean from Madagascar II (Coleoptera: Scarabaeoidea: Ochodaeidae), Insecta Mundi 706 (706), pp. 1-10: 8-9

publication ID

http://doi.org/10.5281/zenodo.3673403

publication LSID

lsid:zoobank.org:pub:08CB0DA0-C83E-438F-AA97-8CD637F044A5

DOI

http://doi.org/10.5281/zenodo.3679989

persistent identifier

http://treatment.plazi.org/id/0381879F-FF9D-6E50-FF1C-9EB7FA02FE55

treatment provided by

Felipe

scientific name

Ochodaeus
status

 

Updated key couplets to Ochodaeus   spp. in Madagascar

The following couplet changes to the species key in Paulsen (2019) allow for determination of all Madagascan species having a granulate pronotum, including the three newly described species.

2(1). Elytral intervals with setose tubercles of 2 sizes, with setae of larger tubercles flattened, scale-like........................................................ O. pygmaeus Paulian   — Elytral intervals with tubercles either absent or of uniform size and without flattened setae. 3

3(2). Clypeus with median tubercle or small horn that is distinct from anterior margin ( Fig. 4–6 View Figures 4–8 )........................................................................... 4 — Clypeus lacking free tubercle or horn, anterior margin usually thickened medially ( Fig. 7–8 View Figures 4–8 ). 6

4(3). Mentum with a knobby protuberance on each side ( Fig. 1d View Figure 1 ).... O. meridialis Paulsen   , n. sp. — Mentum lacking protuberances laterally............................................ 5

5(4). Clypeus ( Fig. 5 View Figures 4–8 ) with median tubercle anterior to frontoclypeal suture; anterior margin of clypeus indistinct and eroded medially........................ O. umbonulus Paulsen   , n. sp.

— Clypeus ( Fig. 6 View Figures 4–8 ) with small horn located on frontoclypeal suture; anterior margin of clypeus distinct and entire throughout.......................... O. iniquipes Paulsen   , n. sp.

6(3). Median thickening of clypeal bead variable, lateral thickening always evident ( Fig. 7 View Figures 4–8 ); body length usually> 9.0 mm........................................ O. isoanalensis Paulian  

— Median thickening of clypeal bead simply convex, bead slender laterally ( Fig. 8 View Figures 4–8 ); body length usually 4.5–8.0 mm............................................ O. miliaris Klug