Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . tes that Papirius has no trachea?.)In Smynthurus the ovaries consist, accordingto Lubbock, of a single egg-tube. Ou the un-derside of the abdomen is a sucking tube, slen- Fig. 6in. der and forked in Smynthurus, butshort in Podura, etc., by w^hich theanimal adheres to smooth the genus Podura the bodj^ islong, with four-jointed antennae, andthe flexible spring-tail is short, whilein Desoria, which is found in theAlps, the tail is long. T
Guide to the study of insects and a treatise on those injurious and beneficial to crops, for the use of colleges, farm-schools, and agriculturists . tes that Papirius has no trachea?.)In Smynthurus the ovaries consist, accordingto Lubbock, of a single egg-tube. Ou the un-derside of the abdomen is a sucking tube, slen- Fig. 6in. der and forked in Smynthurus, butshort in Podura, etc., by w^hich theanimal adheres to smooth the genus Podura the bodj^ islong, with four-jointed antennae, andthe flexible spring-tail is short, whilein Desoria, which is found in theAlps, the tail is long. The genusDegeeria is known by the ovate body,and basal half of the spring equal--ling the fork in _.,,,,„, „.,,length. A species M/ft/W^ (Fig. m^) Lay ipy^Aim resembling the European D. nivalis Nicolet, we have found in summer leaves of the Clematis. Tlie L binos Nic. (Fig. 620) is a minute pearlj species found in Europe; its scales (Fig. 621) are thin and with distinct markings. Smynthurus is short, differing greatI3 inform from Podura, and bears a striking resemblance to thelarva of Coniopteryx. The body is short, nearly spherical, and40. resting „„ the!;; , lltlll! i Lite pearly white fell! !!:!l(i WO Fig. 621. 626 ARACHNI1>A. in its form approaches the spiders, as noticed by four-jointed antennse are long and elbowed, while thereare eight simple eyes on each side of the head. The speciesare found on the leaves of garden plants. In Papirius ofLubbock, the antennae are said to be four-jointed, but with-out a well marked elbow, and with a short terminal segment,offering the appearance of being many-jointed. * SUB-CLASS IL AKACHNIDA. The t^pical forms of this order have the body divided intotwo regions, the head-thorax (cephalothorax) and head is sometimes quite distinct, but is generally sunkeninto the thorax, which bears four pairs of legs, while the abdo-men has no organs of locomotion, though the abdomen is pro>vided with three pairs o
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
