Micraneflus imbellis Click here for a larger view

Diagnosis.--Key characters: Ommatidial size coarse (Fig. 39b); prosternal process widened apically and not planar (Fig. 18); mesal antennal spines absent (Fig. 13); lateral projections into mesocoxae from mesosternum present (Fig. 21); lateral procoxal cavities closed (Fig. 27); pronotum narrower than elytra; third antennomere half length of pronotum or less (Fig. 46a); profemora gradually enlarged (Fig. 37c); meso- and metafemora linear (Fig. 37d); tibial carinae absent; femoral apices rounded (Fig. 26); antennal carinae absent; lateral mesocoxal cavities open (Fig. 17); antennae 11-segmented; elytra rounded to suture which is slightly spinose or dentiform; integument dark and covered with moderately dense recumbent pubescence (Fig. 13b). Length: 10-15 mm.

Distribution and Diversity.--Southwestern United States to Baja California, México. Monotypic.

Discussion.--In the hypothesized phylogeny, Micraneflus is shown to be the sister genus to the South American Morphaneflus. It probably has greater affinities to Aneflus and Aneflomorpha which would be revealed with further character analysis.

Micraneflus resembles species in Aneflomorpha and Aneflus but differs from both in lacking mesal antennal spines. Micraneflus also differs from Aneflomorpha in having antennomeres strongly widened at apices (Fig. 13a). Micraneflus lacks tibial and antennal carinae which further separates it from Aneflus and Aneflomorpha.