. Bulletin. Natural history; Natural history. 371 veinless; fore wings with an apical double fringe of eight hairs, and with the basal scale black. Femora concolorous with head and thorax; tibiae and tarsi yellowish brown. Abdomen large; sides sub-parallel as far as segment 6, thence curving roundly to base of tube. Tube about three-fifths as long as head, ab- ruptlv narrowed at apex, and slightly narrowed at middle. Measurements:—Total length mm. ( mm.); head, length .32 mm., width . 19 mm.; prothorax, length .27 mm., width (in- cluding coxae) .40 mm.; pterothorax, width .41 mm.;
. Bulletin. Natural history; Natural history. 371 veinless; fore wings with an apical double fringe of eight hairs, and with the basal scale black. Femora concolorous with head and thorax; tibiae and tarsi yellowish brown. Abdomen large; sides sub-parallel as far as segment 6, thence curving roundly to base of tube. Tube about three-fifths as long as head, ab- ruptlv narrowed at apex, and slightly narrowed at middle. Measurements:—Total length mm. ( mm.); head, length .32 mm., width . 19 mm.; prothorax, length .27 mm., width (in- cluding coxae) .40 mm.; pterothorax, width .41 mm.; abdomen, width .45 mm.; tube, length . 13 mm., width at base .082 mm., at apex .041 mm. Antennae: 1, 41 ,«; 2, 52 /«; 3, 57 /t; 4, 55 ;«; 5, 54 ;«; 6, 54 /«; 7, 49 fx; 8. 54 /, thrips.) Head almost one and one-half times as long as wide; cheeks par- allel, sparsely spinose; vertex ele- vated, narrowed anteriorly, not overhanging. Antennae stout, eight- segmented, about one and three- fourths times as long as head, inserted beneath vertex; segments 7 and 8 distinct, but united into a heavy, compact club, and with a straight, comb-like, ventral row of either nine or ten bristles; seg- ments 2 and 7 slightly longer than the intermediate ones, which are almost exactly equal in length. Mouth cone long, slender, acute, surpassing base of prostemum; labrum pointed. Prothorax large, trapezoidal, armed with five pairs of bristles. Legs short, stout; fore tarsi armed with an acute tooth which in the male is larger and slightly cun.'ed. Male without scale at base of Fig. 6 Neothrips corticis. a, head and prothorax, fe- male; b, tip of abdomen, female; c, right antenna, dorsal view, female; (i, right fore leg, male. (J. D. H., del.). 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 Illinois. Natural Histor
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
