Two new Nearctic genera in the tribe Odynerini s. str. revealed on the bionomics and morphology, with a comment on the cocoons of the eumenine wasps (Hymenoptera: Vespidae: Eumeninae)

Two new genera are described for three species in the “red” group of North American eumenine wasps from genus Odynerus Latreille, 1802: Bohartodynerus Fateryga, gen. n. O. margaretellus Rohwer, 1915 (type species) and cinnabarinus Bohart, 1939, Parkerodynerus erythrogaster 1939). comb. is newly recorded Nevada New Mexico B. California, Mexico, Utah, Wyoming. Bionomics included to these summarized. Nectar robbing reported at flowers Astragalus spp. (Fabaceae), Penstemon sp. (Plantaginaceae), Calylophus (Onagraceae). It speculated that nectar used by them bond gravel during construction closing plug nest. apparently does not use liquid nest construction. other tribe Odynerini s. str. discussed. Neither nor can be treated as members according their ethology, differences between two taxa also enough recognize separate genera. A cocoon P. detail; it has a sandwich-like structure with layers silk strands layer sand in-between. Similar found cocoons but only free part instead over its whole surface; was overlooked previous studies those