Acanthoscelides

Yus-Ramos, Rafael, Ventura, Daniel, Bensusan, Keith, Coello-García, Pedro, György, Zoltán & Stojanova, Anelia, 2014, Alien seed beetles (Coleoptera: Chrysomelidae: Bruchinae) in Europe, Zootaxa 3826 (3), pp. 401-448 : 427

Key to established species of Acanthoscelides

( Figure 9 )

1 Body very small (body length 1.1–2.7 mm); elytra with black integument, often pigmented red in a variable pattern; antennae short, moniliform; hind femur with three individual narrow subapical denticles decreasing in size towards the apex; hind tibia with very long mucro ( Figs. 9 A, B)............................................... Acanthoscelides pallidipennis

- Body larger (body length 2.9–4.2 mm); elytra with integument entirely black or entirely reddish, pubescence forming a pattern of spots; antennae longer with more or less dentate segments; hind femur with three wider triangular denticles fused into the base (pecten); hind tibia with shorter mucro............................................................... 2

2 Antennae entirely reddish-yellow; dimorphic, with more protruding eyes and serrate antennae in males; hind femur wider with the 3 denticles of the pecten more robust; elytra with a more defined pattern of light spots ( Figs. 9 C, D)........................................................................................... Acanthoscelides macrophthalmus

- Antennae black with reddish base and apex, scarcely dimorphic, with protruding eyes and serrate antennae that are slightly marked in both sexes; hind femur narrower with the two subapical denticles less robust; elytra with spots of low contrast ( Figs. 9 E, F).......................................................................... Acanthoscelides obtectus

Figures

FIGURE 9. Acanthoscelides species alien to Europe. A – B, Acanthoscelides pallidipennis: A, Adult; B, Hind leg. C – D, Acanthoscelides macrophthalmus: C, Adult; D, Hind leg. E – F, Acanthoscelides obtectus: E, Adult; F, Hind leg.