Cryptorhynchini
Subfamily Guides
2- Cryptorhynchina(hidden-snout weevils)
- Tylodina
Cryptorhynchini is a tribe of weevils within the Molytinae (Curculionidae). Members of this tribe are characterized by a rostrum that can be retracted into a groove between the procoxae, a trait reflected in the name 'hidden snout.' The tribe contains numerous distributed across multiple continents, with diverse ecological roles including herbivory and, in at least one documented case, behavioral mimicry of dung beetles.
Pronunciation
How to pronounce Cryptorhynchini: /ˌkrɪptoʊˈrɪŋkɪnaɪ/
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Identification
Cryptorhynchini can be distinguished from other weevil tribes by the presence of a groove between the procoxae into which the rostrum can be retracted. This 'hidden snout' configuration is the primary diagnostic feature for the tribe. Additional characters include specific arrangements of tarsal segments and rostral structure, though these vary among constituent .
Images
Distribution
Widespread across multiple continents including Australia, where the Tentegia occurs.
Behavior
The Australian Tentegia stupida has been observed constructing and rolling balls, mimicking the of dung beetles. This appears to function as a protective strategy to conceal the weevil from .
More Details
Etymology
The name Cryptorhynchini derives from Greek 'kryptos' (hidden) and 'rhynchos' (snout), referring to the retractable rostrum characteristic of the tribe.
Taxonomic note
The tribe contains the Australian Tentegia, which includes Tentegia stupida—the only known weevil with documented -rolling .