. Annals of applied biology. Biology, Economic; Biochemistry. 214 Life History of Wireworms The apex of the elytral sheath is sHghtly hooked but less so than in some alhed species ( Athous haemorrhoidalis). The number of spiracles is the same in the pupa as in the larva. The single thoracic pair is situated ventrally in the membrane between the pro- and meso-thoracic segments, anterior to the intermediate coxae. The abdominal spiracles are situated laterally in the pleurae between the folds of the tergite and sternite, but are not concealed as in A. sputafor. Those of the first segment are
. Annals of applied biology. Biology, Economic; Biochemistry. 214 Life History of Wireworms The apex of the elytral sheath is sHghtly hooked but less so than in some alhed species ( Athous haemorrhoidalis). The number of spiracles is the same in the pupa as in the larva. The single thoracic pair is situated ventrally in the membrane between the pro- and meso-thoracic segments, anterior to the intermediate coxae. The abdominal spiracles are situated laterally in the pleurae between the folds of the tergite and sternite, but are not concealed as in A. sputafor. Those of the first segment are almost in the middle of each pleura, the remainder, on segments 2 to 8, are near the anterior margin of the pleura. The spiracles are uni-forous, almost circular and bear on their Vlll. VII Fig. 4. Terminal segments (a) of (J pujDa, (b) of $ pupa, from ventral surface. posterior margin somewhat dorsally a small round scar with a fine linear cicatrix: in the middle. There is no appearance of any atrium and the taenidia extend to the aperture. It is interesting to compare the segments and spiracles of the pupa with those of the adult. In the latter there is one pair of spiracles more than in the pupa or larva. There are the same number (eight) in the abdomen, but two pairs in the thorax, situated (1) ventrally, in the membrane between the pro- and meso-thoracic sternites, on either side of the prosternal process and (2) dorsally, in the pleurae of the meta- thorax, beneath the insertion of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectbiochem, bookyear1921
