Tanystoma cuyama
Tanystoma cuyama
Size: 8.7-10.5mm
Seasonality: October-June: Data Incomplete, Will Edit As Needed
Distribution; w. Coast of California, nw. BC-MX - Including the Channel Islands of California.
Information: may be found on various types of beaches, groves, woodlands, fields, and the like near the coastline of California, into Baja California.
Description: elongate-ovate, semi-robust or slender (males tend to have slightly narrower elytra and pronota than the females), body glossy or semi-glossy. Head triangular; dark orange, to orange, nearly black; face relatively short. Occiput weakly constricted. Eyes reduced, but not strongly; the eyes weakly bulge laterally, and are slightly angled forward. Two supraorbital setae over each eye. Most of the surface of the head should be smooth; frons with two very shallow, small dimples, which do not continue onto the clypeus. The clypeus possesses two seta-bearing fovea, one on either lateral margin. Mandibles not particularly long, curved. Palpi yellow. First three segments of the antennae should be of a paler yellow or yellow-orange colouration than the rest of the antennae; antennal pubescence begins on the second antennomere following the pedicel (segment #4). Pronotum ovate; relatively pale orange to very dark orange, typically with a smokey brown blotch spanning from the base of the pronotum to the centre of the disk. Front margin rounded inward slightly; front angles acute; lateral margins round, beaded; hind angles obtuse; basal margin sinuous, dorsal base should have a short series of vertical wrinkles. Median line strong, disk surfaces on either side of the median line should be weakly convex; the dorsal surfaces inside of the hind angles are rough, slightly depressed. Scutellum exposed. 8-9 well-defined striae per elytron, intervals flat; glossy to semi-glossy brown in colour, with smokey-yellow margins. Humeral shoulders rounded-obtuse, laterobasal ridges entire, curved apically; lateral margins rounded; apices weakly sinuate. Parascutellar pores small. Aside from the 5 seta-bearing fovea found along the 3rd elytral interval (as seen in the third studio photo included), as well as the typical lateral setae found on most carabids, no elytral pubescence is present on this species. Ventral colouration semi-glossy piceous, limbs yellow.