. Elementary studies in insect life. Insects. 288 ELEMENTARY STUDIES IN INSECT LIFE mandibles in males large, and armed with projections or teeth. Lucaniilm. (Stag Beetles.) DD.— The ventral surface of abdomen divided into six segments; elytra do not usually cover entire dorsal sur- face of abdomen. flcarabacidae. (Chafers ; June-Bugs.) CC.—Antenna? never lamelliform, but thread-like or nearly so. (Adephaga.) D.— Legs fitted for running. Terrestrial insects. E.— Clypeus extending laterally in front of base of antennae; , antennae inserted in front above base of mandibles. Cicindclidae. (Ti
. Elementary studies in insect life. Insects. 288 ELEMENTARY STUDIES IN INSECT LIFE mandibles in males large, and armed with projections or teeth. Lucaniilm. (Stag Beetles.) DD.— The ventral surface of abdomen divided into six segments; elytra do not usually cover entire dorsal sur- face of abdomen. flcarabacidae. (Chafers ; June-Bugs.) CC.—Antenna? never lamelliform, but thread-like or nearly so. (Adephaga.) D.— Legs fitted for running. Terrestrial insects. E.— Clypeus extending laterally in front of base of antennae; , antennae inserted in front above base of mandibles. Cicindclidae. (Tiger Beetles.) EE.— Clypeus not extending laterally in front of base of antennae; , antenna- coming from the side of the head between base of mandibles and the eyes. Cardbidae. (Ground Beetles.) DD.— Legs, especially the hind legs, fitted for swimming; not capable of ordinary walking. Di/tiNci<lu<: (Predaceous Diving Beetles.) BB.— Front and middle tarsi five-jointed, hind tarsi four-jointed. (Heteromera.) C.— Prothorax wider than head; front coxa1 separated, not protruding; body and wing-covers firm. Tciu-bi-ion'nl<n-. (Darkling Beetles ) CC.— Prothorax narrower than head; front coxae near together, protruding; body and wing-covers soft. Meloidae. (Blister Beetles.) BBB.— Tarsi four-jointed (apparently), but with a small indistinct joint between the third and fourth clearly visible segments. (Phytophaga.) (See Figure 210.) C.— Body elongate, antennae long, fre- quently as long as the body or longer; the larvae are borers. Cerambycidae. (Long-horned Beetles.) CC.— Body short, more or less oval, an- tenna? short. Chrysomclidae. (Leaf Beetles.). FIG. 216. Tarsi of beetle, showing indistinct fourth segment. (After Comstock.). 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 Hu
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1902
