. Bulletin. Natural history; Natural history. 378 ments 3-5 clavate; 6-8 fusiform; segments 1, 2, 7, 8, apical half of 6, and apical fourth of 5, dark blackish brown; remainder of antenna lemon- yellow, excepting apex of 4, which is clouded with brown. Mouth cone about as long as its width at base, broadly rounded; tip of labrum just attaining tip of labium. Prothorax almost as long as width of head, and (including coxae) slightly more than twice as wide as long; surface finely reticulate; usual spines all present, the two pairs near the posterior angles somewhat longer than the others. Ptero-
. Bulletin. Natural history; Natural history. 378 ments 3-5 clavate; 6-8 fusiform; segments 1, 2, 7, 8, apical half of 6, and apical fourth of 5, dark blackish brown; remainder of antenna lemon- yellow, excepting apex of 4, which is clouded with brown. Mouth cone about as long as its width at base, broadly rounded; tip of labrum just attaining tip of labium. Prothorax almost as long as width of head, and (including coxae) slightly more than twice as wide as long; surface finely reticulate; usual spines all present, the two pairs near the posterior angles somewhat longer than the others. Ptero- thorax sub-rectangular, about two-thirds as long aswide, and slightly broader than prothorax; anterior corners projecting slightly beyond the lateral margins. Wings represented by small pads, which are about equal in length to the head, and four times as long as broad. All tibiae and tarsi bright yellow, the former often clouded with brown at base; re- mainder of legs concolorous with body anterior tarsi unarmed. Abdomen broad, about one and one half times as wide as pterothorax, widest at segment 4, from which it tapers evenly to tube, giving the abdomen a lanceolate form. Tube almost as long as head, tapering evenly to middle, and then some what more abruptly to apex; surface not spinose. Measurements:—Total length .34 mm.; head, length .53 mm., width .25 mm.; prothorax, length .21 mm., width (including coxae) .46 mm.; pterothorax, width .48 mm.; abdomen, width .74 mm.; tube, length .47 mm., width at base . 114 mm., at apex .052 mm. Ant- enna: 1, 48 //; 2, 70 //; 3, 140 pt; 4, 120 /<; 5, 112 p.; 6, 92 p; 7, 67 //; 8, 70 ji; total, .72 mm. Male.—Smaller than female (total length mm.). An- terior femora no stouter than in female; fore tibiae provided with a stout tooth. Abdomen slender, tapering evenly from almost the very base. Described from several males and females, all from Illinois, as follows: Dubois, Apr. 28 (C. A. Hart and L. M. Smith); Homer,
Size: 1242px × 2011px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
