Orsodacninae
C.G. Thomson, 1859
Orsodacninae is a of containing a single , Orsodacne, with four Holarctic . These beetles are small in the , a group historically placed within . The subfamily is characterized by distinctive morphological features and a restricted geographic distribution in the Northern Hemisphere.
Pronunciation
How to pronounce Orsodacninae: /ɔɹsoʊˈdæknɪˌni/
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Identification
Orsodacninae can be distinguished from other by the combination of: with 11 that are relatively short and not strongly clubbed; with distinct margins; and that appear 4-4-4 (pseudotetramerous) due to the small size of the fourth . The single Orsodacne has with metallic coloration, often green or coppery, and compact body form.
Images
Distribution
Holarctic distribution, occurring in the northern regions of North America, Europe, and Asia.
Similar Taxa
- GalerucinaeSimilar compact body form and ; distinguished by Galerucinae having more variable antennal proportions and different tarsal structure (truly 4-4-4 or 5-5-5 in some groups).
- CriocerinaeHistorical confusion in ; Criocerinae have elongated bodies and often possess enlarged hind for jumping, unlike Orsodacninae.