THE GRASSHOPPER'S COUSINS
a spot on the second joint and a black J on the first (A, B). A third, the four-spotted cricket (D), has a dash and dot side by side on each joint. A fourth, the black-horned or striped tree cricket (E), has two spots on each joint more or less run together, or sometimes has the whole base of the antenna blackish, while the color may also spread over the fore parts of the body and, on some individuals, form
Fig. 39. Male and female of the narrow-winged tree cricket, Oecanthus angustipennis
The female is feeding on a liquid exuded from the back of the male, while the latter holds his fore wings in the attitude of singing. (Enlarged about 3 times)
stripes along the back. A fifth species, the broad-winged (F), has no marks on the antennae, which are uniformly brownish.
The narrow-winged tree cricket (Oecanthus angustipennis) is almost everywhere associated with the snowy, but its notes are very easily distinguished. They consist of slower, purring sounds, usually prolonged about two seconds, and separated by intervals of the same length, but as fall approaches they become slower and longer. Always they are sad in tone and sound far off.
The three other common tree crickets, the black-horned or striped cricket, Oecanthus nigricornis, the four-spotted,
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