Hexacolini
Genus Guides
2Hexacolini is a tribe of weevils within the Curculionidae. Members of this tribe are characterized by specific morphological features related to their tarsal structure, particularly the hexamerous (six-segmented) that give the group its name. The tribe is relatively small and poorly documented in the literature compared to other curculionid tribes.
Pronunciation
How to pronounce Hexacolini: //ˌhɛksəˈkoʊlaɪni//
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Identification
Hexacolini weevils are distinguished from related tribes primarily by their tarsal formula of 6-6-6 (hexamerous ), meaning all three pairs of legs have six tarsomeres. This contrasts with the more common 5-5-5 tarsal formula found in most Curculionidae. The rostrum is generally of moderate length, and the body form tends to be compact rather than elongate.
Similar Taxa
- CurculioniniSimilar general body plan and rostrum structure, but distinguished by 5-5-5 tarsal formula versus 6-6-6 in Hexacolini
- TanyrhynchiniOverlaps in distribution and preferences; Tanyrhynchini possess 5-5-5 and often have more elongate body forms
More Details
Taxonomic note
The tribal classification within Curculioninae remains under revision, and some authorities have questioned the distinctiveness of Hexacolini. The defining hexamerous tarsal character may have evolved convergently or may be subject to .