16. With narrow waist (16 A). ORDER HYMENOPTERA...........................................ANT
Without narrow waist (16 B)...............................................................................17
17. Antenna with fewer than 8 segments (17 A)............................................................18
Antenna with more than 8 segments (17 B).............................................................19
18. Abdomen with 6 or fewer segments (18 A). ORDER COLLEMBOLA................SPRINTAIL
Abdomen with more than 6 segments (18 B). ORDER MALLAPHAGA...CHEWING LOUSE
19. Tarsus with 4-5 segments (19 A)..........................................................................20
Tarsus with 1-3 segments (19 B). ORDER PSOCOPTERA....BOOK LOUSE OR PSOCID
Figure 2-2. Standard identification key (continued).
MD0170
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