Exetastes fornicator nervulus
(Say, 1835)
Exetastes fornicator nervulus is a of ichneumonid in the Exetastes. It was described by Thomas Say in 1835. The subspecies is recorded from both North America and Europe, with specific distribution records from Canada and Belgium. Like other members of the Ichneumonidae, it is a wasp, though specific associations for this subspecies are not well documented.
Pronunciation
How to pronounce Exetastes fornicator nervulus: /ɛk.sɛˈtæs.teːs fɔr.nɪˈkeɪ.tɔr ˈnɛr.vjuː.lʊs/
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Identification
Distinguished from the nominate Exetastes fornicator fornicator by subtle differences in wing venation and coloration patterns, though specific diagnostic features require expert examination. Separation from other Exetastes depends on detailed morphological analysis of , propodeum , and ovipositor proportions.
Distribution
Recorded from North America (Canada: Alberta, including Calgary and Bilby; Ontario, including Cooking Lake) and Europe (Belgium, including the Flemish Region).
Ecological Role
As a member of the Ichneumonidae, this functions as a , though specific and ecological impacts remain undocumented.
Similar Taxa
- Exetastes fornicator fornicatorNominate ; differs in wing venation details and geographic distribution pattern
- Other Exetastes speciesRequire examination of segment counts, propodeum structure, and ovipositor length ratios for reliable separation
More Details
Taxonomic Note
The was originally described by Thomas Say in 1835, a foundational figure in American entomology. The transatlantic distribution (North America and Europe) suggests either natural range expansion, anthropogenic introduction, or possible taxonomic reconsideration of subspecies boundaries.