Blister beetles vary by species in shape, size (3/8 to 1 inch long) and color (solid gray to black or with paler wing margins, metallic, yellowish striped or spotted). Most are long, cylindrical narrow-bodied beetles that have heads that are wider than the first thoracic segment (pronotum). The wing (elytra) covers are usually soft and pliable. Although over 100 species occur in Texas, common blister beetles include:, the black blister beetle; Epicauta pennsylvanica (De Geer), E. occidentalis (east and central Texas) and E. temexa (south Texas) are mostly orangish-yellow with three black stripes on each of the wing covers (elytra). A west Texas species, Cysteodemus armatus LeConte, has wing covers that are broadly oval and convex, colored black with bluish or purplish highlights.