Outlines of entomology . off in flashes at irregular intervals, both during flight and re-pose. In Photinus pyralis both sexes are winged and luminous. InPhoturus, the somewhat smaller and less brilliant species often havewingless females. The larvae, which are glow-worms, burrow in th eearth, often com-ing to the surface, and have a faint luminosity. They feed on the softlarvae of other insects and on earth-worms. The most common species of Soldier-beetle is a slender, clay-yel-low insect, with a large black spot on the top of the pro-thorax and anoblong one near the tip of each wing cover. T
Outlines of entomology . off in flashes at irregular intervals, both during flight and re-pose. In Photinus pyralis both sexes are winged and luminous. InPhoturus, the somewhat smaller and less brilliant species often havewingless females. The larvae, which are glow-worms, burrow in th eearth, often com-ing to the surface, and have a faint luminosity. They feed on the softlarvae of other insects and on earth-worms. The most common species of Soldier-beetle is a slender, clay-yel-low insect, with a large black spot on the top of the pro-thorax and anoblong one near the tip of each wing cover. This beetle bears therather formidable name of Ghauliognatlms pennsylvaniens, De G. Thelarvae somewhat resemble those of the lady-birds and like them are ofservice to us by feeding on other insects that are injurious to vegetation. The beetles may almost always be found in the autumn upon theflowers of the Grolden-rod and Eupatorium. OUTLINES OF ENTOMOLOGY. 61 CHAPTER COLEOPTERA. Tribe Lamellicornia. [Fig. 25.]. Spotted Pelidnota, (Pelidnula punctata) with larvse and pupffi (after Riley). The Tribe Lamellicornia is of great extent, and in it we findmostly large or medium-sized beetles which feed on vegetation, eitherfresh or in a state of decay, or on the excrement of the larger beetles resemble each other chiefly in the form of the antennae,which terminate in a knob or expansion, composed of three—sometimesmore—leaf-like blades, attached by one end and capable of being openedor closed like the pages of a book, at the will of the insect. Before taking up the true Lamellicorns we find a small group, some-times distinguished as Pecticornta (tooth-horned), in which the anten-nae are furnished at the tips with several stiff projections on one side,like the teeth to a comb, and are further characterized by being bentor elbowed in the middle. In this division the principal Family (Lucanid^) contains the Stagbeetles or Pinching beetles. In these the head is
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectentomology, bookyear1
