Spanish bean beetle

Bruchus affinis

univoltine seed beetle Bruchus affinis Frölich, 1799 is native to most countries of the western Palaearctic Region (Anton 2010). It has been found there as a seed predator of several species of Lathyrus and to some extent Vicia faba L, (broadbeans) (Bashar et al. 1987, 1990; Delobel and Delobel 2006). Bruchus affinis adults use pollen and nectar of various Lathyrus species for food but require feeding on pollen of L. latifolius L. or L. sylvestris L. to terminate sexual diapause and commence oviposition on newly formed pods (Bashar et al. 1987, 1990).
Spanish bean beetle invasive to North America, likes sweet pea Bruchus affinis,Geotagged,Spanish bean beetle,Summer,United States

Appearance

Bruchus affnis can be distinguished from other North American Bruchus by the following combination of characters (adapted from key by Kingsolver 2004 using Borowiec 1988): antennae with three or four basal antennomeres red-brown; pronotum with lateral spines situated before pronotal midlength in anterodorsal view; male mid tibiae with two spines on ventral surface near apex; hind legs with femoral spine extending apicad (not protruding ventrad beyond basal part of ventral surface, like Kingsolver 2004 g. 257), mucro twice longer than lateral denticle; protibiae with some red-brown colouration on basal half, mesotibiae black broadly obtuse apex of the aedeagus is also unique among North American species. For rapid assessments, no other species has lateral spines situated on the anterior half of the pronotum and all black mesotibiae

References:

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https://www.researchgate.net/publication/365146250_Palaearctic_seed_beetle_Bruchus_affinis_Coleoptera_Chrysomelidae_Bruchinae_new_to_North_America_arrival_distribution_and_autecology
Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassInsecta
OrderColeoptera
FamilyChrysomelidae
GenusBruchus
SpeciesBruchus affinis
Photographed in
United States of America