. Un manuel pour l'étude des insectes. Les insectes. COLEOPTERA. 521. (Le^bi-a gran'dis) (Fig. 626). Il a été signalé plus souvent que tout autre insecte que détruire le doryphore de la coccinelle. Janus Galerita (Ga-e-ri'ta ja'nus) est encore une autre espèce qui est comparable à la bom- bardier-scarabées. Mais il est beaucoup plus grand, mesurant les deux tiers d'un pouce de longueur, et n'a que le prothorax et les jambes rouges- lave jaune, la tête étant noir ; le prothorax est seulement la moitié aussi large que l'aile-couvre. Ce qui est peut-être le type le plus commun de rez-de-coléoptère est illustré par Harpalus caligino

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. A manual for the study of insects. Insects. COLEOPTERA. 521. (Le^bi-a gran'dis) (Fig. 626). It has been reported more often than any other insect as destroying the Colorado Potato-beetle. Galerita Janus (Gal-e-ri'ta ja'nus) is still another species that bears some resemblance to the bom- bardier-beetles. But it is much larger, measuring two thirds of an inch in length, and has only the prothorax and legs red- dish yellow, the head being black; the prothorax is only about half as wide as the wing-covers. What is perhaps the most common type of ground-beetle is illustrated by Harpalus caliginosus (Har'pa-lus ca-lig-i- no'sus), w^hich is represented natural size by Figure 627. It is of a pitchy black color, and is one of the most common Yice-ze—Lediagrandis, . - . _^- natural size and en- of our larger species. ihere are nearly larg^ed. fifty other species of this genus in this country. Most of them are smaller than this one, are flattened, and have the prothorax nearly square. The beetles of the genus Dicc^lus (Di-cae'- lus) are quite common ; and some of the larger species resemble Harpalus caliginosus quite closely. They can be distinguished by a prom- inent keel-shaped ridge which extends back upon each wing-cover from near the corner of Fig. 627. the prothorax. The most common of all ground-beetles, in the North- eastern States at least, is Pterosticus luctiblaitdus (Pte-ros'ti-cus lu-cu-blanMus). In this species (Fig. 628) the narrow, flat margin on each side of the prothorax is widened near the hinder angle of this segment. Fig. 628.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. joint author. Ithaca, N. Y. , Comstock Pub. Co.

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