Laphriinae

Dennis, D. Steve, Barnes, Jeffrey K. & Knutson, Lloyd, 2008, Pupal cases of Nearctic robber flies (Diptera: Asilidae), Zootaxa 1868 (1), pp. 1-98 : 20

Key to known pupal cases of Nearctic genera of the Laphriinae

1 Head with 5 basally fused posterior antennal processes; median facial spines bifurcate or not; face lacking median or anterior bristle between spines; abdominal segment 1 with broad dorsomedian, bifurcate or trifurcate spine; venter of abdominal segment 3 with median space interrupting transverse row of spines; venter of segments 4–7 without median space, but median spines often shorter than surrounding spines...... .......................................................................................................................................... Lampria

­ Head with 3–5 basally fused posterior antennal processes; median facial spines usually not bifurcate; face with or without median or anterior bristle between spines; abdominal segment 1 usually without dorsomedian bifurcate spine, but, if present, spine not broad; venter of segments 3–7 with median space interrupting transverse row of spurs, space becoming smaller posteriorly and/or segments with shorter median spines than surrounding spines....................................................................................................................2

2 Head with 3–5 basally fused posterior antennal processes; facial area usually without bristle between or anterior to median spines (present in Laphria virginica (Banks)) ................................................... Laphria

­ Head with 3–4 basally fused posterior antennal processes, fourth process, when present, small; facial area with bristle between or anterior to median spines .................................................................. Andrenosoma