Bidigitus
Species Guides
1- Bidigitus platani(western sycamore sawfly)
Bidigitus is a of in the Tenthredinidae (suborder ). These herbivorous insects are characterized by their broad connection between and , lacking the narrow ' waist' of . The genus is documented through limited observations, with 31 records on iNaturalist. Sawflies in this family typically have larvae that feed externally on plant foliage.
Pronunciation
How to pronounce Bidigitus: //baɪˈdɪdʒɪtʊs//
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Identification
Members of Bidigitus can be distinguished from other Tenthredinidae by genitalia characteristics, particularly the structure of the male claspers. The name refers to the two-fingered or bifid structure of these genitalic features. lack the constricted petiole between and that characterizes , bees, and ants. Antennal structure and wing venation patterns separate this genus from related genera within the .
Distribution
Observations documented on iNaturalist suggest presence in North America, though precise range boundaries remain undefined.
Life Cycle
in Tenthredinidae undergo complete with , larval, pupal, and stages. Larvae are typically external feeders on plant foliage. Specific details for Bidigitus are not documented.
Ecological Role
As herbivores, larvae likely function as primary consumers in . may contribute to pollination through incidental pollen contact during nectar feeding.
Human Relevance
Larvae of some Tenthredinidae are occasional pests of ornamental plants and crops. No specific economic impacts have been documented for Bidigitus.
Similar Taxa
More Details
Taxonomic note
The name 'Bidigitus' has been used in multiple taxonomic contexts. The Catalogue of Life lists 'Ctenodesmus bidigitus' as a (Diplopoda), which is unrelated to the hymenopteran Bidigitus treated here. These are homonyms across entirely different .