Spilopteron vicinum
(Cresson, 1869)
Spilopteron vicinum is a of ichneumonid in the Spilopteron. It is a wasp, placing it within the diverse Ichneumonidae, one of the largest families of insects. The species was described by Cresson in 1869. Limited specific ecological information is available for this species.
Pronunciation
How to pronounce Spilopteron vicinum: /ˌspɪˌlɒptəˈrɒn vɪˈsɪnəm/
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Identification
Members of the Spilopteron can be distinguished from other ichneumonid genera by wing venation patterns and structural features of the and ovipositor. -level identification within Spilopteron requires examination of morphological characters including details of the propodeum , coloration patterns, and relative proportions of antennal segments. S. vicinum specifically requires comparison with , particularly S. occiputale and S. frugiferum, which overlap in distribution.
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Distribution
Recorded from Canada (Manitoba: Teulon) and the United States (Vermont). Distribution records are sparse, suggesting either genuine rarity or undercollection.
Ecological Role
As a member of Ichneumonidae, S. vicinum functions as a , likely attacking larvae of Lepidoptera or other holometabolous insects. The specific range has not been documented.
Similar Taxa
- Spilopteron occiputaleOverlapping distribution and similar size; distinguished by differences in and color pattern on the margin of the head
- Spilopteron frugiferumSympatric in eastern North America; differs in propodeum structure and relative length of the ovipositor
- Other small ichneumonine generaSimilar general habitus; Spilopteron is distinguished by the presence of a distinct areolet in the forewing and characteristic with thickened middle flagellomeres
More Details
Taxonomic Note
The Spilopteron was revised by Townes in 1969, who provided the foundation for modern concepts in the genus. The specific epithet 'vicinum' (Latin: 'near' or 'neighboring') may refer to similarity to another species or geographic proximity at the type locality.
Collection History
The sparse distribution records suggest this may be genuinely uncommon, or it may be frequently misidentified or overlooked due to its small size. The was collected in the 19th century, with few subsequent confirmed records.