. Elementary entomology . lab ^ Fig. 10. Face of grasshopper an/, antenna ; f/,iclypeus ; eye, compound eye ; /ad, labium ; //>r, labium ; /l>./, labial palpi; ""^ , maxillary palpi; oc, ocellus 27,000 in certain sphinx moths. Between the compound eyes, on the front, or vertex, of the head, are two or three small oval or circular simjple^ eyes^-Calied^^^-///. Caterpillars and other larvae have no compound eyes, but on either side of the head have a group of from four to six ocelli. In many flies and bees the com- pound eyes of the male are larger and closer togeth
. Elementary entomology . lab ^ Fig. 10. Face of grasshopper an/, antenna ; f/,iclypeus ; eye, compound eye ; /ad, labium ; //>r, labium ; /l>./, labial palpi; ""^ , maxillary palpi; oc, ocellus 27,000 in certain sphinx moths. Between the compound eyes, on the front, or vertex, of the head, are two or three small oval or circular simjple^ eyes^-Calied^^^-///. Caterpillars and other larvae have no compound eyes, but on either side of the head have a group of from four to six ocelli. In many flies and bees the com- pound eyes of the male are larger and closer together than those of the female, this being due, possibly, to the male's leading a more active life. Mouth-parts. The mouth-parts are of prime importance, both from an economic and from a systematic standpoint. Upon their structure depends the kind of insecticide which may be effectively
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
