. Légumes de manuel-jardin d'insectes. S Le Blister-Beetle Epicauta gris cinerea Forster le blister gris-beetle (Fig. 186) ressemble étroitement au gris cendre espèce avec laquelle il a souvent été confondu. Il isdistinguished en ayant le deuxième segment de l'antenne au moins la moitié aussi longtemps que la troisième. Le blister gris cendre-beetleis un gris plus foncé, plus terne ; le grayblister-coléoptère est un gris plus clair avec aslight teinté de jaune. Cette latterbeetle a également été confondu avec le chat espèces, quelques writerseven merelyvarieties en considérant les deux de la même espèce. Betterave-blister gris,alors que le

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. Manual of vegetable-garden insects. S The Gray Blister-Beetle Epicauta cinerea Forster The gray blister-beetle (Fig. 186) closely resembles the ash-gray species with which it has often been confused. It isdistinguished by having the second segment of the antennae less than one half as long as thethird. The ash-gray blister-beetleis a duller, darker gray; the grayblister-beetle is a lighter gray with aslight tinge of yellow. This latterbeetle has also been confused withthe margined species, some writerseven considering the two as merelyvarieties of the same species. Whilethe gray blister-beetle is recorded asoccurring sparingly in the East, itis much more abundant in the Westin Iowa, Colorado, Kansas, Nebraskaand Texas. It attacks bean, lentil, lupine, potato and clover and in western Nebraska has beenrecorded as feeding on the hornbean, locust and honey locust.It has been reared from the egg-pods of the Rocky Mountainlocust. The egg is pale clay-yellow in color, elongate ellipticalin outline, and about te inch in length.. Fig. ISO. — The gray blister-beetle iX 31). The Ash-Gray Blister-Beetle Macrobasis unicolor Kirby The species known as the ash-gray blister-beetle (Fig. 187) isi to f inch in length. The ground color is black but the insectis clothed with a grayish pubescence so that its general ap-pearance is dark gray. The insect is distributed throughout BUS TER-BEE TIES 307 Canada and the United States westward to Kansas andNebraska. The life history of this insect has never been fully workedout. The beetles appear in swarms in May or June and aremore or less abundant until autumn.The female lays her eggs in irregularmasses in the ground an inch or sobelow the surface. The beetles havebeen rearefl from larvie feeding on theeggs of the Rocky Mountain locust.In Minnesota there are said to be twogenerations annually, the adults of thefirst brood appearing about the middleof June, those of the second from themiddle of August to early in September.These beetles a

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