22 described spp. total, all in our area, arranged into 3 subgenera(1)(2)
Identification
key to spp. in(1) (identification based primarily on genital anatomy)
Range
Canada to Mexico; both members of the nominotypical subgenus are western (WA-CA to ID-CO-NM), Litocolus (6 spp.) are by far more diverse in sw. US, Ceocolus (14 spp.) are widespread(1)
Food
known hosts include members of Convolvulaceae, Fabaceae
Print References
Smith, D.R. 2017. A new Nearctic Sphacophilus Provancher (Hymenoptera : Argidae). Proceedings of the Entomological Society of Washington 119(2): 228-232. (BioOne)