1. Posteroventral brush of hindtarsus yellow
...2
- Posteroventral brush of hindtarsus black or
brown
...4
2. Mid- and hindfemora black. Male with first flagellomere black
- Mid- and hindfemora yellow. Male with first flagellomere yellowish medially and basally
. . . . 3
3. Male with postorbital region about 1/6 as long as eye
- Male with postorbital region about 1/10 as long as eye
D. (L.) species A
4. Femora yellow
...5
- At least distal 2/5 of forefemur black: mid- and hindfemora mainly or entirely black
...6
5. Head of male distinctly longer than high, vibrissal angle distinctly produced and antenna in deep fovea. Head of female not distinctly longer than high, vibrissal angle less produced than in male. Palpus black and enlarged in both sexes. Anterior frontal seta 0.66-1.00x as long as posterior frontal seta
- Head of both sexes as long as high, vibrissal angle only slightly produced in both sexes. Palpus black or yellow with black tip. not enlarged. Anterior frontal seta less than half as long as posterior frontal seta
6. Forefemur almost entirely black, only slightly yellow at base. Mid- and hindfemora entirely black. Both sexes with black enlarged palpus
- Forefemur yellow on basal 0.25-0.60, rest black. Mid- and hindfemora entirely black, or apices yellow. Palpus not enlarged, base often yellow
...7
7. Forefemur yellow on basal 0.60. Apex of mid- and hindfemora yellow
- Forefemur yellow on basal 0.25-0.40. Mid- and hindfemora entirely black