Insect Orders
The Coleoptera Order: Beetles
a.
b.
c.
d.
e.
f.
g.
h.
i.
Adult Key
1a. Head elongates into a structure called a Rostrum (Figure a.)
1b. Head not elongated into a rostrum
See 2
2a. Hind Coxal plates completely covering 2 or three basal abdominal segments (Figures b. [dorsal view] and c. [ventral veiw])
2b. Hind coxal plates not as broad plates (Figure d.)
See 3
3a. Prothorax and head uniformly red; Elytrum uniformly black (Figure e.)
3b. Color not as above
See 4
4a. Base of hind leg not extending posteriorly to divide the first abdominal segment (Figures f. and g.); Metasternal spine present or absent (present in figure g.)
4b. Base of hind leg extending posteriorly to divide the first abdominal segment (Figures h. and i.); Metasternal spine always absent