. Nature sketches in temperate America, a series of sketches and a popular account of insects, birds, and plants, treated from some aspects of their evolution and ecological relations . he meadows. This sprightly little locust may be found ingreat numbers among the succulent grasses, sedges, and otherwild herbage. Commencing in July and extending throughSeptember this locust gradually reaches the climax in point ofnumbers. In the stretches of wet meadows and swales, itit often forms a large percentage of the assemblage of spiders,moths, flies, grasshoppers, and other insects that one mayfind b
. Nature sketches in temperate America, a series of sketches and a popular account of insects, birds, and plants, treated from some aspects of their evolution and ecological relations . he meadows. This sprightly little locust may be found ingreat numbers among the succulent grasses, sedges, and otherwild herbage. Commencing in July and extending throughSeptember this locust gradually reaches the climax in point ofnumbers. In the stretches of wet meadows and swales, itit often forms a large percentage of the assemblage of spiders,moths, flies, grasshoppers, and other insects that one mayfind by using the sweep-net. South of Jackson Park, Chicago, I found the short-wingbrown locust, on June eighteenth, just reaching maturity;the nymphs and adults were then about equal in accompanying photographic figures in the plate weretaken from four individuals found at this point. These Acrid-ians did not jump about as actively at this time as theydid in the hot days of July and during fall. At Riverside,Illinois, I have observed this species in the grassy openingseast of the Des Plaines River as late as October thirteenth. ECOLOGY —INTERPRETATION OF ENVIRONMENT 371. The Short-wing Broun Locust (Stenoboihrus ciirtijirrini.\). Upper and lower figures to ike left, males — the latter individual in the attitude of stridulation; upper fignr-c to the right, female; lower figttre to the right, nymph. 372 NATURE SKETCHES IN TEMPERATE AMERICA which had survived hght frosts. In 1906 it came to maturityabout June twenty-third at Lakeside, Michigan, and from thattime on it began to be more noticeable in the damp meadowssome distance back on our experiment grounds. I found itoccasionally appearing on the light sandy earth covered witha light humus and grasses. This area is shown in the foreground in the view of thehabitat of the Orthoptera, though it was not the typicalabiding place of this species. On sunny days I often observedthe interesting males stridulating. In the lowe
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