INSECTS
of the grasshopper (A), but usually differs from that of the grasshopper in having the basal joint smooth or hairy all around or with only one pad on the under surface. In most crickets, also, the second joint of the foot is very small.
Fig. 33. The wings of a tree cricket
A, right front wing of an immature female, showing normal arrangement of veins: Sc, subcosta; R, radius; M, media; Cu1, first branch of cubitus; Cu2, second branch of cubitus; 1A, first anal. (From Comstock and Needham)
B, front wing of an adult female of the narrow-winged tree cricket
C, front wing of an immature male, showing widening of inner half to form vibrating area, or tympanum, and modification of veins in this area. (From Comstock and Needham)
D, right front wing of adult male of the narrow-winged tree cricket; the second branch of cubitus (Cu2) becomes the curved file vein (fv); s, the scraper
Some crickets have large wings, some small wings, some no wings at all. The females are provided with long ovipositors for placing their eggs in twigs of trees or in the ground (Figs. 35, 36).
The musical or stridulating organs of the crickets are similar to those of the katydids, being formed from the veins of the basal parts of the front wings. But in the crickets the organs are equally developed on each wing, and it looks as if these insects could play with either wing uppermost. Yet most of them consistently keep the right
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