Ophryastes cinerascens
(Pierce, 1913)
broad-nosed weevil
Ophryastes cinerascens is a of broad-nosed in the , first described by Pierce in 1913. It belongs to the tribe Ophryastini within the Entiminae. The species is to western North America, with documented occurrences in British Columbia, Oregon, and Washington. As a member of the broad-nosed weevil group, it possesses the characteristic elongated snout typical of the family Curculionidae.
Pronunciation
How to pronounce Ophryastes cinerascens: /oʊˈfraɪəstiːz sɪˈnɛrəskɛnz/
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Identification
Identification to level within Ophryastes requires examination of genitalic structures and detailed morphological features, as many species in this are similar in external appearance. The broad, relatively short distinguishes Ophryastes from with more elongate snouts. Geographic location (Pacific Northwest region of North America) helps narrow identification possibilities within the genus. Confirmation typically requires dissection and comparison with or authoritative .
Appearance
As a broad-nosed in the Ophryastes, this exhibits the defining features of the : an elongated (snout) with mouthparts at the tip, elbowed and clubbed , and a compact, often somewhat cylindrical body form. The specific epithet "cinerascens" (from Latin "cinereus," meaning ash-colored or ashen) suggests a grayish or ashen coloration. Members of the tribe Ophryastini typically have relatively broad, short rostrums compared to other weevil groups, giving them the "broad-nosed" . The body is likely covered with fine or typical of many entimine weevils.
Distribution
Documented from western North America, specifically British Columbia (Canada), Oregon, and Washington (United States). The appears to be restricted to the Pacific Northwest region.
Similar Taxa
- Other Ophryastes speciesMultiple occur in western North America; O. cinerascens requires careful morphological examination to distinguish from such as O. squalidus and O. mixtus, which share similar ranges and general appearance.
- Other Entiminae weevilsBroad-nosed in related (e.g., Pandeleteius, Pachnaeus) share the general body plan but differ in rostral proportions, antennal insertion points, and leg structure.
More Details
Taxonomic note
The was originally described by William Dwight Pierce in 1913. The Ophryastes currently contains approximately 50 described species, predominantly distributed in western North America. The tribe Ophryastini is part of the diverse Entiminae, which contains many economically important and species-rich groups.
Research needs
Like many North , detailed biological and ecological information for O. cinerascens remains undocumented in accessible literature. Basic , associations, and requirements require field study.