94 ILUNOIS BIOLOGICAL MONOGRAPHS [412 



Erythraspides Ashmead 



Larvae comparatively speaking small, inconspicuously spinose, 

 greenish; third abdominal segment with five annulets, annulets 2 and 4 

 each with three minute bifurcate spines. 



According to Dyar's Key (1898) the larvae of Erythraspides pygtnaeae 

 is distinguished from those of Blennocampa spiraeae by the black head 

 and spines of the former. Record is meager, and without specimens no 

 adequate diagnosis can be given. 



MONOPHADNUS HaRTIG 



Larvae rather small, length less than 15 mm., spotted; body rather 

 robust, only slightly and uniformly tapering caudad; tubercles conical, 

 small, blackish, not furcate; third abdominal segments with six annulets, 

 annulets 2 and 4 tuberculate; tenth abdominal tergum with two rows of 

 tubercles, some of which are bifurcate; prothoracic spinal formula: 

 1-1:1:1:1; third abdominal segment, 1-1-1:1:1-1-1:1:1; antennae 5, (4, 3, 

 2), 1; maxillary palpi (4, 2), 1, 3; labial palpi (1, 2); palpi rather thick and 

 conical; spiracles with distinct black wings. 



Monophadnus nubilipennis Norton. — Length, 14 mm.; width of head, 

 1.3 mm.; head blackish brown, clypeus alone lighter; body dirty white 

 with yellowish tinge; legs grayish; on hellebore; Y-42,-8.42. 



Hypergyricus MacGillivray 

 Larvae rather large and robust, spotted; length 16-20 mm., body 

 subcylindrical, tapering but slightly and uniformly caudad; tubercu- 

 late, tubercles conical, short, stout, usually not furcate; third abdominal 

 segment with six annulets, annulets 2 and 4 tuberculate; tenth abdominal 

 segment with two rows of few tubercles; prothoracic spinal formula 

 variable, but with a single tubercle on supraspiraculararea and two tubercles 

 ventrad of it; third abdominal segment also with variable number of 

 tubercles, only two on subspiracular area; tubercles not furcate; spiracles 

 with faint ventral crescentic brown marks but without definite wings; 

 antennae rather obtusely rounded, segments decreasing in diameter from 

 proximal to distal, but increasing in length; suranal and subanal lobes 

 strongly convex, with numerous short recumbent setae; legs with femur 

 distinctly longer than tibia; distal portion of femur dilated and produced 

 ventro-mesad. 



SPECIES OF HYPERGYRICUS 

 Head bJack, genae, antennariae, ventral half of front and clj^^eus lighter in color; tubercles 

 blackish; body whitish, faint grayish shade and yellowish tinge in older stages; 

 legs grayish brown; antennae with segment 3 and 4 subequal in length; prothorax 

 with spines, 2-2:1:1:1; third abdominal segment, 1-1:0:1-1:1:1; latus of body along 

 supraspiracular lines with broken band of grayish shade, marks distinct and square 



