316 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 17 
lected by sweeping alfalfa with a net, while the large ones are sufficiently 
conspicuous as they rest extended along a leaf or stem to make possible 
their collection by hand. The larvae have been described as to colora¬ 
tion, size and general features by French (1884). 
It is well known that color bands vary in number and shade; therefore, 
at the writer’s request, Mr. Carl Heinrich of the U. S. National Museum 
prepared a description of setal characters which is given verbatum, 
accompanied by figures, 1,2, and 5: 
“Body cylindrical, slender, scarcely tapering at caudal end; abdominal segments 
much elongated. No secondary hair. Legs normal. Prolegs on 5th, 6th, and 10th 
abdominal segments only. Crochets uniordinal, in a mesoseries. Prothoracic 
shield narrow, undivided, not extended laterallyto include setae Ic to lie. Spiracles 
oval, rather large; that on prothorax 2 times and that on 8th abdominal segment 1 ]/ 2 
times as large as others on abdominal segments. Skin smooth. 
Body setae short; tubercles very small with no surrounding chitinizations; IV 
on abdominal segments 1 to 8 posterior to the spiracle, far removed from V; V am 
tero-ventrad of the spiracle on abdominal segments 8 and 1 to 4,directly ventrad on 5 
to 7; only two prespiracular setae on prothorax (IV and V), III absent; IV and 
V united on abdominal 9; II antero-ventrad of the spiracle on abdominal segments 
1 to 8, farthest forward on segments 1 to 4; Ilia not distinguishable; I and II 
nearly on a level on most abdominal segments, II distinctly more laterad, only on 
segments 7 and 8; group VI bisetose on prothorax, unisetose on remaining thoracic 
segments and on abdominal segments 1 to 8; absent on abdominal 9; group VII 
trisetose on abdominal segments 1 to 6, unisetose on 7, 8 and 9; prothorax with 
Ila higher than la, Ic and lie closely approximate and well separated from the other 
setae, lb also well separated, punctures X and Y well back of seta la, Y lying mid¬ 
way between la and lib; meso- and metathorax with la and lb well separated, also 
Ila and lib. 
Head capsule spherical; longer than wide; greatest width well forward of middle; 
incision of dorsal hind margin slight. Frons (FR) triangular, slightly longer than 
wide, not reaching middle of head. Adfrontal sutures (ADFS) extending to middle 
of head. Longitudinal ridge (LR) long, about 1J4 times length of frons. 
Ocelli six; lenses well defined; ocelli I to IV grouped together; V and VI well 
separated from the rest. Epistoma normal. 
Frontal punctures (Fa) close together; slightly forward of frontal setae (F 1 ); 
distance separating frontal seta (F 1 ) and first adfrontal seta (adf 1 ) less than that 
separating adf 1 and adf 2 posterior to beginning of longitudinal ridge; puncture adf a 
approximate to adf 2 . 
Epicranium with the normal primary setae and punctures, but without distin¬ 
guishable ultra posterior setae or punctures. Anterior setae (A 1 , A 2 , A 3 ) forming an 
obtuse angle; anterior puncture (A a ) postero-laterad of A 2 . Lateral seta (L 1 ) 
well back on head, widely remote from A 3 ; lateral puncture (L a ) postero-ventrad of 
L 1 , approximate. Posterior setae (p 1 , p 2 ) behind middle; puncture p a before middle, 
on the level of adf 2 ; puncture p b lying between p 1 and p 2 . Ocellar setae (0 1 , 0 2 , 
0 3 ) triangularly grouped; 0 1 lying close to and below ocellus IV; 0 2 postero-ventrad of 
ocellus 1, in a line with ocelli I and II ;0 3 antero-ventrad of 0 2 , remote; ocellar punct- 
