A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . llae aremodifications of thistype. • How wonderfullythe maxillae of theLepidoptera aremodified, and thepeculiar shapes as-sumed in the Dip-tera, Hymenoptera,and other groups,will be stated in theaccounts of thoseorders, but it is wellto recall the factthat in the mostprimitive and gen-eralized moth, Erio-cephala, the laciniais well developed(Fig. 04). As Newport re-marks, the office ofthe maxil
A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . llae aremodifications of thistype. • How wonderfullythe maxillae of theLepidoptera aremodified, and thepeculiar shapes as-sumed in the Dip-tera, Hymenoptera,and other groups,will be stated in theaccounts of thoseorders, but it is wellto recall the factthat in the mostprimitive and gen-eralized moth, Erio-cephala, the laciniais well developed(Fig. 04). As Newport re-marks, the office ofthe maxillae in themandibulate insectsis of a twofoldkind ; since they are J times; nix , 2d maxilla. adapted not only for seizing and retaining the food in the mouth, but also as accessoryjaws, since they aid the mandibles in comminuting it before it ispassed on to the pharynx and swallowed. Hence, as the food variesso much in nature and situation, it will be readily seen that themaxillae, especially their distal parts, vary correspondingly. Thusfar no close observations on the exact use of the first and secondmaxillae have been published. The palpi also are not only organs of touch, but in some cases. V ill ,!,:,,, / MX. i \^m 1. mx. FIG. fi2.—Larva of Rltagiiim Unentum : lat, lateral view ofhead and thoracic segments ; nix, first maxilla ; ml, undifferentiatedlacinia and galea ; v, under side of head and pro- and mesn- , one of the middle ventral segments, magnified six act as hands and also bear minute sense-organs, the function 68 TEXT-BOOK OF ENTOMOLOGY
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
