Indian forest insects of economic importance Coleoptera . me species of insect depicted is Hoplocerambyx spinicornis, Newn. club which is more or less compact, and can usually be opened out andclosed at will. Adephaga.—Tarsus of all legs five-jointed. Joints of antennae with two-jointed tarsi. Polymorpha.—Tarsus of legs variable. Joints of antennae clubbed orserrate. COLEOPTERA—CHARACTERS, HABITS, CLASSIFICATION 65 Heteromera.—Tarsus of two front pairs of legs five-jointed ; of hindpair of legs four-jointed. Phytophaga.—Tarsus four-jointed on all legs and densely pubesc
Indian forest insects of economic importance Coleoptera . me species of insect depicted is Hoplocerambyx spinicornis, Newn. club which is more or less compact, and can usually be opened out andclosed at will. Adephaga.—Tarsus of all legs five-jointed. Joints of antennae with two-jointed tarsi. Polymorpha.—Tarsus of legs variable. Joints of antennae clubbed orserrate. COLEOPTERA—CHARACTERS, HABITS, CLASSIFICATION 65 Heteromera.—Tarsus of two front pairs of legs five-jointed ; of hindpair of legs four-jointed. Phytophaga.—Tarsus four-jointed on all legs and densely pubescent. Thehead is not prolonged into a beak. Rhynchpphora.—Tarsus four-jointed on all legs and densely head is prolonged into a beak, which may be of considerable length. For full details on the subject of classification, text books on ento-mology should be consulted. A book which will be available to all inIndia is Lefroys excellent work Indian Insect Life, where the subject, sofar as is at present possible, is fully dealt FlG. -A beetle (Heliocopris dominus]. The right elytronis in the position of rest ; the left is partially removed ;the lower wing is spread in the position of flight. 9003 i. ( 66 ) CHAPTER TARSI five-jointed. Upper joints of the antennae produced in flat orthickened expansions to one side, so as to form a club, which is more orless compact, and can be opened out and closed at will. The larvae have acharacteristic shape, the lower part of the body being swollen out in abag-like manner (cf. fig. 30^). This division is easily recognizable. The three families Passalidae,Lucanidae, and Scarabaeidae will be considered. Family PASSALIDAE. The Passalidae are a family of shining black or brownish beetles,commonly met with in decaying or dead trees or stumps in the forest. Thebeetles reach about one and a half inches in length, with shining prothorax,which is large and squarish, and are easily recognizable by the
Size: 2129px × 1174px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbeetles, bookyear1914
