. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). New Yoek Agricultural Experiment Station. 463. Fit 29.—Adult Female of Cacus acanthi: antenna of male. 1912, three adults emerged in the box containing eggs of nigricornis and on the following day one more appeared. (Fig. 29.) The adult is mm. in length. The body is entirely black except the legs which are dark brown. The abdo- men is 6-jointed, slender, flattened, and club- shaped. The front wings have the submarginal vein meeting the costa just beyond the middle; the stigmal vein is curved, oblique, a
. Annual report of the Commissioner of Agriculture ... Agriculture -- New York (State). New Yoek Agricultural Experiment Station. 463. Fit 29.—Adult Female of Cacus acanthi: antenna of male. 1912, three adults emerged in the box containing eggs of nigricornis and on the following day one more appeared. (Fig. 29.) The adult is mm. in length. The body is entirely black except the legs which are dark brown. The abdo- men is 6-jointed, slender, flattened, and club- shaped. The front wings have the submarginal vein meeting the costa just beyond the middle; the stigmal vein is curved, oblique, and terminates in a knob. Both sexes have 12-jointed antennae; in the male they are filiform (Fig. 29, a); in the female the first joint or scape is very large; the second, third and fourth slender, the fifth and sixth transverse, and the remaining six segments form a compact club. A dipterous parasite.— On August 29, 1912, a puparium of some dipterous insect was found in a bottle with a sickly, yellowish- looking specimen of quadripunctatus in the fifth nymphal instar, which was still alive. By dissecting a number of specimens of tree crickets we found one which contained a larva of the same parasite. This larva was large and ovoid in shape, and of a pale yellowish color. It occupied the abdominal cavity above the alimentary canal and below the fat body. The cricket was alive when cut open, but it was of an abnormal yellowish color and the abdomen was distended. The parasitic larva pupated but we were unable to rear adults from the two puparia. Mermis sp. In our rearings of tree crickets we have occasionally noticed examples of parasitism with hairworms. Individuals that were parasitized became quite sluggish in their movements during the last stages of life and were more or less discolored. The tip of the abdomen was generally blackish and there were also indications of a dark-colored discharge from the anus. Nymphs of the fourth. Please note that these images are extracte
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