Colpotrochia fultoni
Townes & Townes, 1959
Colpotrochia fultoni is a of ichneumon in the Metopiinae, first described by Townes & Townes in 1959. Like other members of its , it is a that develops inside caterpillar . The species is part of a North American genus with four recognized species, all restricted to the eastern United States ranging from the Atlantic coast to just west of the Mississippi River.
Pronunciation
How to pronounce Colpotrochia fultoni: /kɔlˈpoʊtrɔkiə ˈfʊltoʊnaɪ/
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Identification
-level identification of Colpotrochia fultoni likely requires examination of antennal markings and other subtle morphological features, as is typical for the . The genus Colpotrochia can be distinguished from other ichneumon wasps by characteristics of the Metopiinae; identification keys to ichneumonid subfamilies are available for this purpose. Members of the genus are small , averaging 6–10 mm in body length, with females possessing a very short ovipositor.
Distribution
Eastern North America, from the Atlantic coast to barely west of the Mississippi River. Specific state records are not documented in available sources.
Host Associations
- Tortricidae - leafroller caterpillars; inferred from -level
Life Cycle
Females lay in caterpillar using a short ovipositor. The larva consumes the host from within, emerging as an from the host pupa rather than allowing the host to complete its development.
Behavior
have been observed at outdoor lights at night. Males of the are known to produce sounds, though specific details for C. fultoni are not documented.
Ecological Role
agent; parasitizes caterpillars, particularly leafrollers, potentially reducing of these herbivores in natural and agricultural settings.
Human Relevance
Beneficial to gardeners and agriculture through natural suppression of caterpillar pests, particularly tortricid leafrollers. No negative impacts documented.
Similar Taxa
- Colpotrochia crassipesOverlapping geographic range in Massachusetts and eastern North America; both use similar and require careful examination for separation
- Colpotrochia trifasciataCo-occurs in Massachusetts and eastern states; distinguished by antennal markings and other subtle morphological features
More Details
Taxonomic history
Described by Townes & Townes in 1959. The Colpotrochia contains four North American according to the Database of Hymenoptera in America North of Mexico.
Research challenges
-level identification within Colpotrochia is difficult and requires examination of markings on the first two antennal segments, similar to the challenges in identifying related ichneumon groups.