Having some difficulty deciding on this Anisodactylus, between agricola Say vs. kirbyi Lindroth.
Characters: uniform dark color; front tibial spur not tridentate though swollen basally; mandibles not prolonged; hind tarsi longer, first segment longer than spur; distinct hind angles of pronotum, noticeably dentate; clypeus with one setigerous puncture on each side. This leads to the decision between A. agricola and A. kirbyi. I've had this ID'd as A. agricola but looking at it a second time I'm not as sure.
Supporting kirbyi: basal impressions of pronotum seem to have a slight linear shape anteriorly; short setae present dorsally on first two hind tarsomeres; hind angles more markedly toothed, which matches better with illustrations in Lindroth.
Supporting agricola: elytra do not seem noticeably dull and intervals not noticeably punctate; elytra broader behind middle; short metasternum (Lindroth notes that "This is the only species of Anisodactylus with wings so small, though reflexed at tip, that they must be regarded as non-functionary."; compared to the other Anisodactylus in my collection, the metasternum to metacoxal ratio is noticeably smaller in this specimen, which is a common external feature of reduced wing species).
Contributed by Brad Barnd on 6 November, 2011 - 2:54am Last updated 6 November, 2011 - 6:38pm
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