Bembidion sarpedon Casey, 1918

Maddison, David R., 2020, Shards, sequences, and shorelines: two new species of Bembidion from North America (Coleoptera, Carabidae), ZooKeys 1007, pp. 85-128 : 85

Bembidion sarpedon Casey, 1918

Bembidion sarpedon Casey, 1918: 58. Lectotype male, designated by Lindroth (1975), in USNM (type number 36914); external structure and aedeagus examined. Type locality Cañon City, Colorado.

Bembidion animatum Casey, 1918: 62. Lectotype female, designated by Lindroth (1975), in USNM (type number 36918), examined. Type locality Jemez Springs, New Mexico ( Lindroth 1975).

Diagnosis and geographic distribution.

Adults of this species (Fig. 11F ) are the palest members of this group, with legs entirely testaceous or rufo-testaceous, with antennae gradually becoming slightly darker toward the apex, and pronotum in most specimens dark rufous as opposed to the piceous or black of other species. The dorsal surface is shinier than in other species, especially the pronotum, because of the nearly effaced microsculpture. The prothorax is moderately cordate; the elytral intervals are flatter than in related species, with small punctures in the striae. The ventral margin of the aedeagus has a slight downward bulge, and the internal sac sclerite complex of male genitalia is narrow in lateral view, with a long and thin flagellar complex. Known from New Mexico and Colorado west to Arizona and Utah, and north to Mammoth Hot Springs, Wyoming (OSAC).

Figures

Figure 11. Adult males of Bembidion transversale subgroup members A B. transversale (voucher V 101454, Canada: Alberta: Burbank, junction of Red Deer and Blindman Rivers, 52.3542 ° N, 113.7556 ° W) B B. erosum (voucher V 101453, USA: California: Del Norte Co., Wilson Creek, 3 m, 41.6051 ° N, 124.1005 ° W). C B. corgenoma (voucher V 101452, from type locality) D B. perspicuum, light form (voucher V 101461, USA: Arizona: Cochise Co., San Pedro R at Charleston, 31.6239 ° N, 110.1722 ° W) E B. perspicuum, dark form (neotype of Bembidium haplogonum Chaudoir, USA: California: Lake Co., North Branch Cache Creek at hwy 20, 305 m 38.9881 ° N, 122.5400 ° W) F B. sarpedon (voucher V 101459, USA: Colorado: Las Animas Co., Cokedale, Reilly Canyon, 37.1346 ° N, 104.6114 ° W). Scale bar 1.0 mm.