Ephialtes decumbens

Specific diagnostic features distinguishing E. decumbens from congeners are not documented in readily accessible sources. Members of Ephialtes generally exhibit elongated bodies with long, multi-segmented antennae and a prominent, slender ovipositor. Identification to species level requires examination of morphological characters such as wing venation patterns, propodeal sculpturing, and coloration details, ideally through reference to the original description or specialized taxonomic keys for the genus.

Specific geographic distribution is not documented beyond the type locality information in the original 1960 description. The single iNaturalist observation suggests at least one confirmed occurrence, though precise locality data is not provided in available sources.

As a member of Ephialtes, this species likely functions as a parasitoid, potentially contributing to population regulation of wood-boring beetles. This inference is based on documented ecological roles of congeners, not confirmed observations of E. decumbens specifically.

• Ephialtes manifestatorA widespread and well-documented congener with similar general morphology; E. manifestator is known to parasitize wood-boring cerambycid larvae and can be distinguished by specific wing venation and coloration patterns detailed in ichneumonid taxonomic literature.
• Other Ephialtes speciesThe genus contains multiple species with overlapping morphological features; precise identification requires examination of minute structural differences in antennae, ovipositor proportions, and abdominal sculpturing.

• parasitoid
• ichneumon wasp
• Hymenoptera
• rarely recorded

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life