A revision of the genus Callimoxys Kraatz (Coleoptera: Cerambycidae) in America North of Mexico and review of world species

摘要

The North American species of Callimoxys Kraatz, 1863 are revised. Callimoxys sanguinicollis (Olivier, 1795), Callimoxys fuscipennis (LeConte, 1861), new status, and Callimoxys pinorum Casey, 1924, new status, are recognized as valid, and two new species (Callimoxys ocularis Hammond and Williams, type locality West Saylorville Lake, Iowa, and Callimoxys nigrinis Hammond and Williams, type locality near Brenham, Texas) are described. A key to the world fauna is included, as well as a review and diagnosis of the two known Palaearctic species, Callimoxys gracilis (Brull, 1832) and Callimoxys retusifer Holzschuh, 1999. A morphometric study was conducted using 67 characters from adults of the North American species. Data were examined using stepwise discriminant analysis to determine which characters aid in the diagnosis of taxa, and their relative amounts of resolving power using canonical variates analysis. Significant sexual dimorphism and variability in morphological characters were detected, but ratios that control for body size were found to be useful in species diagnosis. Phylogenetic analysis using the genus Stenopterus Illiger, 1804 as outgroup returned a single most parsimonious tree and hypothesized C. ocularis+C nigrinis as ancestral and C. sanguinicollis +C. pinorum most derived.