. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Bui. no;, U. S. Dept. of Agriculture. PLATE The Lead-Cable Borer (Scobicia deci_ivis). Morphological details of mature larva. Fig. 17.—Dorsal surface of head: e, Epistoma; es, epicranial suture, dorsal part. Fig. 18.—Lateral surface of head. Fig. 19.—Ventral surface of head: es, Epi- cranial suture, ventra:! part; ft, hypostoma (see arrow; letter ft placed in triangular continuation of hypostoma); tb, tentorial bridge, partly overlapped by presternal part of cervical membrane. Fig. 20.—Dorsal surface of maxillEe,
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Bui. no;, U. S. Dept. of Agriculture. PLATE The Lead-Cable Borer (Scobicia deci_ivis). Morphological details of mature larva. Fig. 17.—Dorsal surface of head: e, Epistoma; es, epicranial suture, dorsal part. Fig. 18.—Lateral surface of head. Fig. 19.—Ventral surface of head: es, Epi- cranial suture, ventra:! part; ft, hypostoma (see arrow; letter ft placed in triangular continuation of hypostoma); tb, tentorial bridge, partly overlapped by presternal part of cervical membrane. Fig. 20.—Dorsal surface of maxillEe, ligula, maxillulae, and hypopharjTix: hyp, Hypophar\Tix; li, buccal side of ligula; vixl, maxillular area with longitudinal series of short setae; hyp, hjTDopnarjTix with sling-shaped chitinization (ftr) shining through surface. Fig. 21.—Anterior surface of head: p, Pleurostoma. Fig. 22.—Tentorium, ventral surface: to. Tentorial arm; th, tentorial bridge. Fig. 23.— Dorsal surface of left mandible. Fig. 24.—Longitudinal section of inner wall of mandible: im. Thickening of basal margin; g, globular enforcement of posterior portion of waU. Fig. 2-5.—Left mandible, showing base with marginal thickening which carries trapeze-shaped chitinization; dorsal wall with fossa mandibularis; inner wall with anterior cavity, posterior thiclcening, and intermediate portion. Fig. 26.—Left mandible: Inner or buccal surface. Fig. 27.—Ventral surface of right maxUla: c, Cardo, showing its entire surface; g, outer lobe of mala (galea?); I, inner lobe of mala (lacinia), show- ing the small membranous part and the stylus-like chitinization; pg, palpiger; st, stipes. Fig. 28.— Antenna, clypeus, and labrum, dorsal surface. Fig. 29.—Ventral mouthparts, ventral surface: li, Ligula; m, mentum; ma, maxillary articulating membrane; sm, submentum; st, stipes of left maxilla; stl, stipes labii. Fig. 30.—Exterior surface of distal end of left prothoracic leg: s, Spine; t, claw- shap
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