Typocerus octonotatus
(Haldeman, 1847)
Eight-spotted Flower Longhorn Beetle
Typocerus octonotatus is a of flower longhorn beetle in the Cerambycidae, occurring in North America. are and frequently observed visiting flowers. The species is one of several common flower longhorns in the eastern United States and is often encountered on a variety of flowering plants during summer months.



Pronunciation
How to pronounce Typocerus octonotatus: /tʌɪˈpɒsərəs ɒktəˈnɒtətəs/
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Identification
Typocerus octonotatus can be distinguished from other Lepturinae by the combination of its flower-visiting and specific elytral patterning. It is similar to other Typocerus but differs in spot arrangement. It is more commonly encountered than Brachyleptura rubrica, which shows a distinct preference for white, compound, flat-topped floral structures such as Hydrangea arborescens.
Images
Habitat
Open areas with flowering vegetation; associated with native prairies and grasslands where flowers occur. In Oklahoma, collected from prairie with diverse native wildflower including Achillea millefolium.
Distribution
North America; recorded from the United States and Canada (Ontario). Specific collection records include Arkansas, Oklahoma, and Missouri.
Seasonality
Active during summer months; observed in June and July.
Host Associations
- Achillea millefolium - flower visitation observed on inflorescence
Behavior
; visit flowers for feeding and possibly mate-finding. Has been observed on flowers during daylight hours in prairie .
Ecological Role
likely function as while visiting flowers; specific ecological role otherwise undocumented.
Similar Taxa
- Brachyleptura rubricaBoth are flower longhorns, but B. rubrica is less commonly encountered and shows strong preference for white, compound, flat-topped flowers rather than the broader flower visitation pattern of T. octonotatus
- Typocerus zebraCongeneric flower longhorn with similar habits but distinct elytral pattern
- Typocerus velutinusCongeneric , similarly common and widespread in eastern North America
More Details
Flower longhorn characteristics
As a member of Lepturinae, T. octonotatus possesses posteriorly tapering , a generally narrow pronotum giving a broad-shouldered appearance, conical , and that do not surround the base. These traits distinguish Lepturinae from Cerambycinae and Lamiinae.