. A manual of zoology. Zoology. FiG. 514. Fig. .515. Fig. .514.—Maxilla of Procrustes coriaceus. c, cardo ; le, galea ; li, laeinia; pm, palpus; si, stipes. Fig. 515.—Calosoma sycoplicmta, (After Ludwig-Leunis.) men are covered by the elytra, these are soft above. Externally the relations of the elytra cause a regional division peculiar to the beetles (flg. 515): head, prothorax, and a third division composed of meso- and metathorax plus abdomen covered by the elytra. The numerous species of beetles—over 100,000 are described—are sub- divided into normal forms and Ehynchophora, the normal form
. A manual of zoology. Zoology. FiG. 514. Fig. .515. Fig. .514.—Maxilla of Procrustes coriaceus. c, cardo ; le, galea ; li, laeinia; pm, palpus; si, stipes. Fig. 515.—Calosoma sycoplicmta, (After Ludwig-Leunis.) men are covered by the elytra, these are soft above. Externally the relations of the elytra cause a regional division peculiar to the beetles (flg. 515): head, prothorax, and a third division composed of meso- and metathorax plus abdomen covered by the elytra. The numerous species of beetles—over 100,000 are described—are sub- divided into normal forms and Ehynchophora, the normal forms being subdivided again upon characters derived from the tarsi as follows: Sub Order I. PENTAMERA. Tarsus five-jointed, the last club-shaped and bearing the claws, while the other four are short and somewhat heart- shaped (fig. .'jl6, a). This is the largest division and contains the tiger beetles (Cicindelid^) and the pre- daceous CARABiDyE (fig. .) ; the water beetles, Htdro- philiDjE and DYTisciDiE; the or Scara- BEmyE, represented by the ' June bugs,' JlelohiitJia.* and the large tropical Dynastes; the fire flies, ; the rove beetles, , etc. Sub Order II. HETEROMERA. First and second legs pentaraerous, third apparently four-jointed ; few forms belong here, among them the 'oil bottles' (Me- ) and the blister beetles, , both of them containing a pecidiar substance, cantharidin, which renders the Spanish flies, Lytta ve^icatoria, an important ingedient of blistering plasters. Some of the Tenebrionid^ live in the larval stages in flour, etc. Sub Order III. TETRAMERA (Cryptopentamera). Tarsi with the. Fig. 5111.—a, pen- tamerous tarsus of Diftificits: />, crypto pen tainer- oua tarsus ()f Cocciiiella ; t, tibia; *, reduced tarsal Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustratio
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1902
