. Annals of applied biology. Biology, Economic; Biochemistry. 308 The Large Poplar Lotighorn in size to the other two taken together. Besides differing in size, the prothoracic segment differs considerably in structure from the other two thoracic segments. Viewed from the side the prothorax shows the following regions: dorsally the large pronotum (p), laterally the pleural lobe (p>l), and ven- trally the eusternum (es)1 and the sternellum (stl). The mesothoracic and the metathoracic show, in side view, the mesonotum and metanotum respectively on their dorsal surface, the pleural lobe medial
. Annals of applied biology. Biology, Economic; Biochemistry. 308 The Large Poplar Lotighorn in size to the other two taken together. Besides differing in size, the prothoracic segment differs considerably in structure from the other two thoracic segments. Viewed from the side the prothorax shows the following regions: dorsally the large pronotum (p), laterally the pleural lobe (p>l), and ven- trally the eusternum (es)1 and the sternellum (stl). The mesothoracic and the metathoracic show, in side view, the mesonotum and metanotum respectively on their dorsal surface, the pleural lobe medially, and the eusternum (es) and sternellum (stl) ventrally (see Fig. 10, b). Ventral to the pleural lobe and lying between it and the eusternum and sternellum,. Fig. 8. Head of larva of S. carcharias, seen from below; the maxillae, labium, and mandibles removed (greatly magnified). a=antenna; c = clypeus; epi = epicranium; <7=gular plate or gula; hm = muscles in head; hs = hypostome; Z = labrum; 111 =labral hooks; to/= maxillary foramen; o — ocellus; o/= occipital foramen; ps = pleurostome; ^ten- torium. is the hypopleurum (hyp). Situated in a cavity between the prothorax and the mesothorax is the large thoracic spiracle, while on the metathorax lies the small spiracle. The Abdomen (Fig. 3, ft). The first seven abdominal segments are similar in structure to each other and show the following regions: the swollen parascutal lobe (pa) 1 The terminology used in this description of the larva is that adopted by F. C. Craig- head in Report No. 107, Dept. of Agriculture, 1915. "The Larvae of the ; See also, A Preliminary Synopsis of Cerambycoid Larvae, by J. L. Webb, Tech. Series, No. 20, Part V, Bureau of Entomology, Dept. of Agriculture, 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 orig
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