108 
Journal of Agricultural Research 
Vol. XXX, No 2 
Itic. Ovisac band inclosing 5 definite transverse spine bands, these all comparatively wide; 
chitinized thickening on head elongate, nearly linear. artemisiae Cockerell. 
jj. Without dermal chitinization; ovisac band inclosing at least 5 more or less distinctly 
developed transverse spine bands; spiracular characters varying. 
q. Apparently with only 4 pairs of abdominal spiracles; size small, length 
as mounted about 1.25 mm.; dorsal spine bands complete; ventral 
abdominal bands narrow; antennae 8-segmented. .minor, new species. 
qq. With 7 or 8 pairs of abdominal spiracles; size larger, 2 mm. or more; 
other characters varying. 
r. With 7 pairs of abdominal spiracles; eyestalk flattened, asymmetri¬ 
cally conical; inner margins of pore bands of anal ring not angu- 
late posteriorly and only indistinctly so anteriorly; antennae 
normally 8-segmented; with a more or less distinct bare dermal 
area between dorsal and marginal spine clusters and secretion 
tufts, at least on the thorax. 
s. Exposed area of derm between marginal and dorsal spine clusters 
much broader than the transverse width of the corresponding 
dorsal spine clusters; secretion corresponding, leaving wido 
exposed areas between dorsal and marginal tufts and between 
dorsal tufts; superficial appearance similar to that of insignit _ 
... monticola Cockerell. 
as. Exposed area of derm between marginal and dorsal spine clusters 
much narrower, at most not so wide as width of corresponding 
dorsal spine bands; dorsal secretion at most leaving only a narrow 
exposed band between it and marginal secretion. 
(. Exposed longitudinal bands evident on anterior portion of body 
only, the spine bands on most of the abdominal segments com¬ 
plete and continuous to the corresponding marginal spine 
clusters; dorsal- secretion more or less obviously agreeing with 
spine arrangement.. pseudograminia, new species. 
It. Exposed longitudinal bands practically complete, except at the 
posterior apex of the body, most of the abdominal spine bands 
terminating far from the corresponding marginal spine clusters; 
dorsal secretion more or less obviously agreeing with spine 
arrangement....,.. graminis Tinsley. 
rr. With 8 pairs of abdominal spiracles; eyestalk usually distinctly 
conical rounded, neither, flattened nor strongly asymmetrical; 
dorsal spine bands complete, broad at ends and only narrowly 
separated from corresponding marginal spine clusters; inner mar¬ 
gins of pore bands of anal ring distinctly and sharply angulate 
. anteriorly and posteriorly, or, if not so, antennae normally 7-seg- 
mented; dorsal secretion completely covering body in heavy tufts 
in perfect specimens. 
u. Spines of the clusters, particularly dorsally, elongate, slender, 
. slightly, but fairly distinctly, swollen at apices; dorsal and 
ventral abdominal spine bands very broad, the latter 6 in 
number; ovisac band with only a single row of scattered 
disk pores along inner margin_ cheilanthi Tinsley. 
uu. Spines, mostly stouter, tapering uniformly from bases to 
rounded apices, not clavate; dorsal and ventral spine bands 
narrower, or at least constricted more or less distinctly at 
some place in their length; usually with 5 transverse ventral 
abdominal spine bands; ovisac band varying but not usually 
as described above 
