Eutrichillus

Bates, 1885

Species Guides

Eutrichillus is a of longhorn beetles in the Lamiinae, established by Henry Walter Bates in 1885. The genus comprises six described distributed in North America, including Eutrichillus biguttatus, E. brevipilus, E. canescens, E. comus, E. neomexicanus, and E. pini. Members of this genus are associated with coniferous trees, particularly pines.

Eutrichillus neomexicanus by (c) Wendy McCrady, some rights reserved (CC BY), uploaded by Wendy McCrady. Used under a CC-BY license.

Eutrichillus canescens by (c) Hopper Museum, some rights reserved (CC BY), uploaded by Hopper Museum. Used under a CC-BY license.

Pronunciation

How to pronounce Eutrichillus: /juːˈtrɪkɪləs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Associated with coniferous forests, particularly pine-dominated woodlands. Eutrichillus biguttatus has been observed in sandstone glades with Pinus echinata (shortleaf pine) in Arkansas.

Distribution

North America. occur in the United States, with records from Arkansas, Oklahoma, New Mexico, and Vermont. Specific distributions vary by species: E. biguttatus is recorded from Arkansas and Oklahoma; E. neomexicanus from New Mexico; E. pini has a broader pine-associated range.

Seasonality

have been collected in June. Eutrichillus biguttatus was attracted to blacklights in early June in Oklahoma.

Host Associations

Pinus echinata - larval Eutrichillus biguttatus beaten from living branches of shortleaf pine

Behavior

are and attracted to ultraviolet light sources. Eutrichillus biguttatus was collected at blacklight alongside other pine-associated cerambycids including Monochamus carolinensis, Acanthocinus obsoletus, and Amniscus sexguttatus.

Similar Taxa

AcanthocinusBoth are pine-associated Lamiinae attracted to blacklights; Eutrichillus distinguished by -level characters requiring close examination
AmniscusSimilar preference for conifers and blacklight attraction; Eutrichillus typically smaller with different antennal proportions

More Details

Taxonomic history

The was described by Henry Walter Bates in 1885 and has remained stable in its tribal placement within Acanthocinini. The type is Eutrichillus comus (originally described as Monohammus comus by Bates in 1881).

Collection methods

Beating living pine branches and blacklighting are effective methods for collecting Eutrichillus . The is not commonly encountered in large numbers.