Phymatodes obliquus Casey, NEW STATUS

• Main Authors: Swift, Ian P., Ray, Ann M.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2010
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Coleoptera; Cerambycidae; Phymatodes; Phymatodes obliquus; Baja; Canada; Victoria Island; victoria island
• Online Access: https://zenodo.org/record/6196109; https://doi.org/10.5281/zenodo.6196109

Phymatodes obliquus Casey, NEW STATUS (Figs 26, 27) Phymatodes obliquus Casey, 1891: 26. Type locality: California, USA. USNM Phymatodes harfordi Casey, 1912: 279. Type locality: Santa Clara County, California, USA. USNM Phymatodes decussatus var. obliquus, Hardy and Preece, 1926: 28 Phymatodes decussatus var. latifasciatus Hardy and Preece, 1927: 191. Type locality: Mt. Tolmie, Victoria Island, British olumbia, Canada. CNC Phymatodes decussatus var. posticus Van Dyke, 1920: 36; Linsley, 1964: 51. Type locality: Camp Nelson, Tulare County,California, USA. CASC NEW SYNONYMY Phymatodes decussatus australis Chemsak, 1963: 40. Type locality: Ensanada, Baja California, Mexico. CASC NEW SYNONYMY Phymatodes obliquus is the oldest name to replace the taxon in Linsley’s (1964) concept of P. decussatus (see the discussion of P. decussatus as well). Phymatodes obliquus can be distinguished from similar species, such as P. decussatus (as defined herein), by its non-setose white fasciae, which are arcuate, rather than angulate; the elytral pubescence, which is long, erect, golden and white in P. decussatus, and short, subappressed, and dark in P. obliquus; and the upper eye lobe, which is contiguous with the lower lobe by at least four rows of omatidia, while in P. decussatus most specimens have only a sclerotized line, lacking ommatidia. This west coast species is similar to P. v a r i u s (Fabricius) from the eastern US, and few salient characters have been found to separate the two species. The most consistent differences are the extent of the white fasciae on the elytra, wherein P. v a r i u s possesses more expansive markings while in P. obliquus they are somewhat reduced. The basal pair is also more transverse in the former species, and more arcuate in the latter. Additionally, P. v a r i u s generally has more dense, dark setae at the elytral base, whereas in P. obliquus the setae are less dense and somewhat lighter. Both of these characters are difficult to interpret when examining a single specimen or even small ...