54 ILLINOIS BIOLOGICAL MONOGRAPHS (372 



and clypeus with four and three setae respectively on each side; larvapods with about 

 6-8 setae, 4-5 on cephalic, 2-3 on lateral aspect; glandubae subequal in length to 

 adjacent setae; spiracles with faint brown wings; thoracic legs with trochanter, femur, 

 and tibia with lengths to each other as 8, 13, and 15 respectively; length, 19 mm.; 



width of head, 1.6 mm.; on Pteris aquilina; Y-168-4 tacitus Say. 



4(3) Trochanter not distinctly shorter than femur; labial palpi with distal segment shorter 

 than the preceding segment; head uniformly pale, rarely with a pair of faint spots on 

 dorsal part of vertex; body uniformly green; legs distad of trochanter brownish; 

 annulation, 1, (5, 4, 3), (2, 6, 7); antennae, slender, conical, (5, 1), 4, (2, 3); maxillary 

 palpi, 2, (4, 1), 3, distal segment subequal to that of labial palpi; labrum and clypeus 

 with four and three setae respectively on each side; thoracic legs with trochanter little 

 shorter than femur, tibia usually almost as long as femur; length, 21-23 mm.; width 

 of head, 1.8 mm.; on Pteris aquilina ; Y-18-1, M-32 (in part), M-86. politus Provancher. 



Selandria Leach 



Larvae comparatively small, length less than 24 mm., usually about 

 15 mm.; body slender, finely annulate; head pale; body green; tenth 

 abdominal tergum unmarked; larvapods glabrous; legs very short, with 

 tibia conspicuously reduced in size, femur distinctly dilated at distal 

 end, bearing rudimentary tibia on dorsal margin; clypeus with two setae on 

 each side; mandible with two setae; labrum with three setae on each side; 

 glandubae very small; spiracles not winged. 



Selandria flavipes Norton. — Legs with trochanter ring-like, femur dilated 

 at distal end, with ventro-mesal projection only slightly narrower in 

 diameter than trochanter; tibia very small, much smaller in diameter than 

 femur, appearing as if surrounded by fleshy part of the latter, deep brown 

 in color; trochanter, femur, and tibia with lengths to each other as 7, 11, 

 and 6, respectively; annulation, 1, 4, 2, (3, 5, 6, 7); antennae slender, coni- 

 cal, 5, (1, 2, 4, 3); maxillary palpi, (4, 1, 2), 3; labial palpi with distal 

 segment subequal in length to segment 1, longer than distal segment of 

 maxillary palpi; length, 15 mm.; width of head 1.3 mm.; on Pteris aqui- 

 lina: Y-168, M-70, C-S.f. 



Subfamily Dolerinae 



Larvae (Fig. 10) moderately large, length, 15-25 mm.; body slender, 

 cylindrical, tapering uniformly and gradually caudad, either uniformly 

 greenish or brownish, or dorsum colored darker than venter, never with 

 bright and distinct patterns; segmentation and annulation distinct; third 

 abdominal segment with six annulets, annulets 2 and 4 on dorsum seti- 

 ferous and with glandubae; larvapods on abdominal segments 2-8 and 10; 

 thoracic legs well developed; head large, as wide as thorax or nearly so; 

 vertical furrows distinct; antennae five-segmented, conical; labrum 

 distinctly asymmetrical, dextral part larger than sinistral; head, legs, 

 larvapods, tenth abdominal tergum, and sternum moderately setiferous; 

 glandubae present; spiracles not winged; cuticle distinctly, uniformly, micro- 



