3. Fore basitarsus almost twice as long as last four segments combined; face golden yellow; cercus covered with relatively short hairs; the hairs approximately as long as width of cercus; 5-5.5. Fig. 144 ... insignis (Stannius)

– Fore basitarsus about equal in length to last four segments combined; face pale yellow or white ... 4

4. Face pale yellow, low edge about level with lower eye-margin; cercus large and triangular, with long strong bristles on outer face of disc; 5.0-6.0. Fig. 147 ... ripicolaLoew

– Face glistening white or silvery white ... 5

5. Epandrial lobe in form of semicircular plate locating on long handle; cercus 1.5-2 times longer than wide; antennal pedicel black; midfemur yellow, black at base; 5.0. Fig. 146... ammobates(Haliday)

– Epandrial lobe usually hidden; cercus not longer than wide; pedicel yellow; mid femur black in basal half ... 6

6. Four distal segments of fore tarsus strongly dilated, with 4^th tarsomere nearly twice wider than long; cercus semicircular, with short external hairs; hypandrium bearing small ventral hook; 4.5-5.5. Fig. 143 ... consobrinusHaliday

–Four distal segments of fore tarsus weakly dilated, with 4^th tarsomere being approximately as long as wide; cercus with long external hairs being longer than width of cercus; cercus hardly 1.5 times wider than long; hypandrium with moderately long toothlike lobe; 5.0. Fig. 142... ociorLoew

7. Antennal scape and pedicel reddish yellow at least beneath ... 8

– Pedicel entirely black ... 10

8. Lower edge of clypeus not angular, about level with lower eye-margin; all femora black except at apex ... notatus (Stannius)

– Face extending well below lower eye-margin; clypeus triangular ... 9 

9. Fore and mid femora reddish yellow on apical fifth only ... ociorLoew

– Fore femur reddish yellow on apical fourth, and mid femur on apical third ... consobrinusHaliday

4. Proximal part of distal section of M₁₊₂ (from m-cu to curvation) longer than apical part; scape usually darkened dorsally ... ammobates (Haliday)

– Proximal part of distal section of M₁₊₂ (from m-cu to curvation) shorter than apical part; scape entirely yellow ... 5

5. Wing vein m-cu infumated; mid femur with long ventral hairs developed from base to apex; two humeral bristles about equal in length; fore tibia slightly shorter than tarsus ... insignis (Stannius)

–Wing vein m-cu without dark limb; mid femur with long ventral hairs developed in basal 2/3 only; lower humeral bristle about 0.75 the length of upper; fore tibia slightly longer than tarsus ... ripicola (Loew)