128 SEVENTEENTH Report State Entomo.Locist or Mrinnesota—1l918 
third arched groove which may join the second in the middle and pass 
laterally below the hind coxae. The cephalothorax is set into a deep 
anterior emarginatim on the ventral side and with it the first two pairs 
of coxae; when at rest or disturbed the anterior legs and palpi are 
curled into this emarginatim so as to be invisible from above. Coxae 
III and IV are near the point of constriction. The genital opening is 
opposite coxae 1V. The anus is just posterior to the genital opening. 
Body thickly covered with stout, blunt, barbed hairs, giving it a velvety 
appearance. The hairs on the legs and palpi are slender and taper at 
the tip. 
The cephalothorax is almost completely hidden by the projecting 
abdomen. Dorsal groove with the expansion at the anterior end. Eyes 
on rather long pedicels and placed rather far forward, a little posterior 
to the level of the expansion of the dorsal groove. Palpi stout, and 
somewhat swollen, segment IV as long as III, thumb as long as seg- 
ments III and IV, swollen distally, one strong claw on the tip of seg- 
ment IV, fine branched hairs on all the segments. Legs of moderate 
length, tarsus 1 somewhat swollen, three times as long as wide. 
Male. Smaller than female, 1.25 to 1.50 mm long by 1 mm wide, 
abdomen more strongly constricted at the middle, and grooves more 
strongly marked. Genital opening longer and narrower. 
Nymph. Not reared. 
Larva, unengorged. Color, scarlet; size 0.16 mm by 0.31 mm. 
Dorsum with an anterior pentagonal chitinous shield. Three branched 
spines at the lateral angle of this shield close together. Posterior 
dorsal shield quadrilateral in outline and close to the anterior shield. 
Ventral side, with mouth parts hidden from above by the dorsal shield. 
Palpi short, and swollen, only one terminal claw, which is scimeter 
shaped and bifurcate; papilla-like thumb bears several long hairs. The 
thick, sharp mandibles have a heavy tooth at the base. On the ventral 
side of the mandibular sheath is a pair of short, stout processes divided 
brush-like into numerous long, fine branches. Coxae I and II con- 
iiguous, each with two long branched hairs; elongate opening to 
tracheal system between them. Coxae II] separated from the others 
and with only one branched hair. Legs slender, tarsi I and II normal, 
tarsi III as in Ew. locustarum larva. Anus near posterior margin, four 
heavy spines on the posterior margin, each nearly a third as long as the 
body. 
Eggs. Spherical in outline. Shell smooth and shiny. Color 
chrome yellow. Size 0.15 mm to 0.17 mm in diameter. About 300 to 
400 placed in a cluster as in other species. 
