4. With one pair of membranous wings (4 A).........................................................5
With two pairs of wings (4 B & C).....................................................................6
5. Wings with scales (5 A). FAMILY CULICIDAE........................................MOSQUITO
Wings without scales (5 B). DIPTERA OTHER THAN MOSQUITOES....................FLY
6. Mouthparts adapted for sucking, with elongate proboscis (6 A)...............................7
Mouthparts adapted for chewing, without elongate proboscis (6 B)..........................9
Figure 2-2. Standard identification key (continued)
MD0170
2-6