Numbers
Total of 26 species
(1) of which only three species (updated from previous two) are known in USA.
Identification
NB: Members of
Anchonoderus are superficially quite similar to
Oxypselaphus pusillus and
Atranus pubescens. Their differences are addressed in the keys on page 41 (couplets 66-67) and page 58 (couplet 20) of American Beetles
(2).
Key to the three American species of Anchonoderus.
A. quadrinotatus Horn: known TX. See type images posted under MCZ #8182. Elongated pronotum; most setose; dark elytra w 4 pale macules; ABL ~ 7 mm.
A. schaefferi Liebke (syn. A. unicolor Schaeffer): known AZ, TX. Elytra broader & pronotum shorter; dorsal setae shorter/sparser; elytra uniformly black without macules; ABL ~ 7 mm.
A. horni Ciski (syn. A. apicalis Horn): known Baja MX, TX (rec. n.). Habitus like A. schaefferi but elytra fusco-testaceous with apices irregularly darker (piceous); ABL ~ 7 mm.
Range
Neotropical genus ranging into sw. US (TX-AZ)
(1)Habitat
Along slow-flowing water courses; adults run on sand/mud or rest under rocks
(2)Contributed by
v belov on 30 October, 2011 - 4:27pm
Additional contributions by
Peter MesserLast updated 18 October, 2020 - 9:27am