. The distribution of insects in New Hampshire. A chapter from the first volume of the final reportupon the Geology of New Hampshire. Insects -- New Hampshire; Insects -- Geographical distribution. 364 PHYSICAL GEOGRAPHY. 3. Nemobius vittatus Harr. is found all over the state, even in the White Mountain region, and extends west as far as Nebraska, and south at least to Maryland. It appears a little earlier than the species of Gryllus, but in the White Mountains not until August. Its chirp is very similar to that of Gryllus, and can best be expressed by ni or rniu, pronounced as Fig. 48. ru m r
. The distribution of insects in New Hampshire. A chapter from the first volume of the final reportupon the Geology of New Hampshire. Insects -- New Hampshire; Insects -- Geographical distribution. 364 PHYSICAL GEOGRAPHY. 3. Nemobius vittatus Harr. is found all over the state, even in the White Mountain region, and extends west as far as Nebraska, and south at least to Maryland. It appears a little earlier than the species of Gryllus, but in the White Mountains not until August. Its chirp is very similar to that of Gryllus, and can best be expressed by ni or rniu, pronounced as Fig. 48. ru m ru ni ni ni ru ru ni ni ru ru. Kote of Nemobius vittatus. though it were a French word. The note is trilled forcibly, and lasts a variable length of time, sometimes for several seconds; at others it is reduced to a short, sharp click.* I once observed one of these insects singing to its mate. At first the song was mild, and frequently broken; afterward it grew impetuous, forcible, and more prolonged; then it decreased in volume and extent till it became quite soft and feeble. At this time the male began to approach the female, uttering a series of twittering chirps; the female ran away, and the male, after a short chase, returned to his old haunt, singing with the same vigor as before, but with more frequent pauses; at last, finding all persuasion unavailing, he brought his serenade to a close. The pauses of his song were almost instantly followed by a peculiar jerk of the body; it consisted of an impulsive movement backward, and then as suddenly forward, and was accompanied by a corresponding movement of the antennas together, and then apart. The female was near enough to be touched by the antennae of the male during the first movement, and usually started in a nearly similar way as soon as touched. The elytra of the male are held at an angle of about twenty degrees from the body during stridulation, and, perhaiDS, at a slightly greater angle from each other. Even when most vio
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