Elementary zoology (1902) Elementary zoology elementaryzoolog00kell Year: 1902 212 ELEMENTARY ZOOLOGY called water-tigers are also predaceous. They suck the blood from other insects through their sharp-pointed sickle-shaped hollow mandibles. When a larva is fully grown it leaves the water, burrows in the ground, and makes a round cell within which it undergoes its transforma- tions. The pupa state lasts about three weeks in summer, but the larvae that transform in autumn remain in the pupa state all winter. The June-beetles (June- bugs) (Lachnosterna sp.) feed on the foliage of „ ™, . ,. , ,
Elementary zoology (1902) Elementary zoology elementaryzoolog00kell Year: 1902 212 ELEMENTARY ZOOLOGY called water-tigers are also predaceous. They suck the blood from other insects through their sharp-pointed sickle-shaped hollow mandibles. When a larva is fully grown it leaves the water, burrows in the ground, and makes a round cell within which it undergoes its transforma- tions. The pupa state lasts about three weeks in summer, but the larvae that transform in autumn remain in the pupa state all winter. The June-beetles (June- bugs) (Lachnosterna sp.) feed on the foliage of „ ™, . ,. , , lM trees. Their eges are Fig. 75.—The qumce-curcuho (a beetle), ^^ Conotrachelus cratcegi* natural size and laid among the roots of SliSda„d.)(Ph0t0gl'aPh ^ M' V- £™SS in Httle h0ll0W balls of earth, and the fat slug- gish white larvae feed on the grass-roots. They some- times occur in such numbers as to injure seriously lawns and meadows. The larvae live three years (probably) before pupating. They pupate underground in an earthen cell, from which the adult beetle crawls out and flies up to the tree-tops. Hymenoptera : the ichneumon flies, ants, wasps, and bees.—Technical Note.—Obtain specimens of wasps, both social (distinguished by having each wing folded longitudinally) and solitary (wings not folded longitudinally), and if possible of both queens (larger) and workers (smaller) of the social kinds ; of ants both winged (males or females) and wingless (workers) individ- uals ; also of honey-bees, including a queen, drones, and workers, and some brood comb containing eggs, larvae, and pupae. The bee
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