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 . be one (Articerus, aclavigerid beetle), or two in Paussus and in Art ran es cncus (Fig. 431-),where they are short and club-shaped; in flies (Museidse, etc.), theyare very short and with few joints, and when at rest lying in a cavityadapted for their reception. In the lamellicorn beetles the flagellumis divided into several leaves, and this condition may be approachedin the serrate or flabellic
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 . be one (Articerus, aclavigerid beetle), or two in Paussus and in Art ran es cncus (Fig. 431-),where they are short and club-shaped; in flies (Museidse, etc.), theyare very short and with few joints, and when at rest lying in a cavityadapted for their reception. In the lamellicorn beetles the flagellumis divided into several leaves, and this condition may be approachedin the serrate or flabellicorn antennae of other beetles. In Lepi-doptera, and in certain saw-flies and beetles, they are either pecti-nate or bipectinate, being in one case at least, that of the AustralianHepialid (Abantfartes argentens), tripectinate (Fig. 44), and in thedipterous (Tachinid) genus Talarocera the third joint is bipectinate(Fig. 45). In Xenos and in Parnus they may be deeply forked, 58 TEXT-BOOK OF ENTOMOLOGY while in Otiocerus, two long processes arise from the base, giving ita trificl shape. In dragon-flies and cicadae, they are minute andhair-like, though jointed, while in the larvae of many metabolous. FIG. 43. — Different forms of antennas of beetles : 1, serrate ; 2, pectinate ; 3, capitate (and alsogeniculate) ; 4-7. clavate ; 8, 9, lamellate ; 10, serrate (Dorcatoma) ; 11, Irregular (Gyrinus) ; 12. two- join teli rinntoriux. — After Kolbe. insects they are reduced to minute three-jointed tubercles. Inaquatic beetles, bugs, etc., the antennae are short, and often, whenat rest, bent close to the body, as long antennae would impedetheir progress. While usually more or less sensorial in function,Graber states that the longicorn beetles in walkingalong a slender twig use their antennae as a rope-dancer does his balancing pole. Recent examination of the sense-organs in theantennae of an ant,wasp, or bee enablesus, he says, to realizewhat wonderful or-gans the antennae such i
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
