Draeculacephala angulifera

Males of this species are boldly-marked, sporting a crossbow-shaped marking on the head. The wing venation is a pale blue and the underside is completely yellow. There are notably two dark spots in front of the antennal segments of both sexes and two very close dark spots on the vertex. The markings on females are much less conspicuous (this species is highly sexually dimorphic). This species can be very difficult to differentiate from D. crassicornis , which also shares the trait of these markings. D. crassicornis is mostly confined to the Pacific coast and doesn't reach as far North as angulifera . Additionally, crassicornis is somewhat stouter in appearance, has black tips of the antennae that appear flattened, and lacks the crossbow mark on males. It is important to obtain clear photographs, as angulifera can be found in the Pacific Northwest to Oregon and extends down the Rockies. note unique crossbow marking on males: Dietrich, 1994 synonymised D. angulifera and D. manitobiana on the basis of insufficient evidence for their separation and Dietrich states that the differences in male genitalia are arbitrary. Additionally, some authors treat D. angulifera , D. crassicornis , D. floridana , and D. noveboracensis as members of the subgenus Draeculacephala (Carneocephala) , but this is not widely supported.