Key to northeastern Nearctic Leptochilus species

Identification Atlas of the Vespidae (Hymenoptera, Aculeata) of the northeastern Nearctic region

CJAI 05, February 19, 2008
doi: 10.3752/cjai.2008.05

Matthias Buck, Stephen A. Marshall, and David K.B. Cheung

Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1

Leptochilus de Saussure

A primarily Holarctic genus with 55 Nearctic species (north of the Isthmus of Tehuantepec) and 38 species north of Mexico (Parker 1966). Most species have a southwestern distribution, and only five species occur in the eastern Nearctic, two of which reach the northeast and one eastern Canada.

Reference. – Parker, 1966 (revision of Nearctic species, key).

6. Key to northeastern Nearctic Leptochilus species

1.	Mouthparts very long, when extended reaching to mid coxae (Fig. 6.2). Interocellar area not tuberculate, with longitudinal groove behind mid ocellus; interantennal prominence not developed (Fig. 6.2). Male: flagellomere XI long and only slightly flattened, its apex reaching base of F IX (Fig. 6.5); mid femur simple	*L. republicanus* (Dalla Torre)
–	Mouthparts short, when extended not reaching beyond fore coxae. Interocellar area distinctly tuberculate; interantennal prominence pointed (Fig. 6.1). Male: flagellomere XI short and extremely flattened, its apex far from reaching base of flagellomere IX (Fig. 6.4); mid femur with broad anteroventral depression in basal half (Fig. 6.3) (U.S.: from NJ southward)	*L. acolhuus* (de Saussure)

Metasoma of Leptochilus species

ISSN 1911-2173

Canadian Journal of

ARTHROPOD IDENTIFICATION