FOUR NEW TETRANYCHIDS. 
By E. A. McGreoor, Bureau of Entomology. 
The following species of phytophagus mites from the 
Southeast are of considerable economic importance and are 
herein described for the first time. 
Tenuipalpus bioculatus sp. nov. 
Female. Body crimson, with two rather well-defined eye-like spots 
on cephalothorax. Widest at posterior corners of cephalothorax, two- 
thirds as wide as long. The cephalothorax is narrowed considerably 
anteriorly, and the abdomen tapers to a rounded tip. The body is 
armed with a pair of weak spines on the anterior body margin medially, 
similar spines immediately before and behind the emarginate eyes, six 
at the posterior tip of the abdomen, a few along the body margin, and 
scattered ones dorsally. The cephalothorax is hardly half as long as 
broad, with the anterior margin convex; the palpi greatly resembles the 
Tetranychus type, the penultimate joint bears a strong claw, and the 
terminal joint (thumb) bears a “finger”. The legs are relatively 

Fie. 1. 
Tenuipal pus bioculalus. Right leg I, dorsal view (enlarged 650 times). 
stout, crenulated; forelegs in length three-quarters the width of cephal- 
othorax; four anterior tarsi blood-red in life; all legs bearing several 
lateral hairs, and a terminal bristle in length equalling the three distal 
segments; the trochanter of the four anterior legs with a lamellate hair 
placed dorsally; the tarsi with several terminal appendages including 
a pair of closely appressed claws, a very long bristle, and the four capi- 
tate hairs, so frequently seen in Tetranychus. 
Length, 0.235 mm.; width (hind margin of cephalothorax), 0.149 mm. 
The egg is thickly elliptical in linear outline, and measures .096 mm. 
by .067 mm. It is blood red in color from the first. The eggs are depos- 
ited with the long axis perpendicular to the leaf, closely packed (like 
those of Coccinellids), often comprising clusters of several hundred. 
Type No. 19090, U. S. Nat. Mus. 
NOTES. 
The six posterior spines are much more conspicuous in the 
younger stages of the larva than in the adult. The molt takes 
place through a transverse rupture (at the suture between the 
354 
