5. Labium with glossa greatly lengthened so as to form elongate tube reaching back to hind coxae. Hypopygium of female greatly enlarged, longer than T3. Color: body black-fuscous except for yellow flagella; wings fuscous (Mexico).

5’. Mouthparts not or only slightly lengthened, glossae at most reaching back to about epicnemial carina. Hypopygium of female usually not enlarged, shorter than T3.