72 
Hubbard believed that it fed on scale insects or their eggs. It is 
undoubtedly a Zetranychus, and probably feeds, like the other species 
of the genus, on plant juices. Hubbard says (Orange Insects, p. 83): 
‘*The eggs are sherry-brown color, quite large and globular, and are 
usually deposited singly upon the leaf or strung like amber beads 
upon strands of spider’s silk, which harbor the mites and their young.” 
Tetranychus gracilipes n. sp. 
Body with the usual bristles stouter than in most of the species, 
the lateral ones extending more outwardly than usual; all are situated 
on the elevated tubercles. Body 'a little broader than usual. The 
beak is more elongate than in any other species, which is also the case 
with the palpi, which are rather closely applied to the beak, the last 
joint very slender, ending in a stout claw; thumb stout, truncate, 
with one finger. The legs are slender, especially the first pair, which 
is much longer than the body; femur I fully five times as long as broad; 
on the joints above, toward the tip, is a stout bristle-like spine; very 
few other bristles on legs except close to the tip of tarsus. The claw is 
at first simple, strongly bent near the middle, and then four cleft 
(similar to 7) b¢maculatus). The mandibular plate is longer and more 
slender than usual, tapering slightly to the tip, where it is broadly 
rounded, and apparently without a median notch. 
Phoenix, Ariz. Prof. Cockerell found this on the leaves of a species 
of Spheralcea. The leaf bears stellate hairs, to which the mite has a 
deceptive resemblance. 
Tetranychus bicolor Banks. 
Tetranychus bicolor Banks.—-Trans. Amer. Ent. Soc., 1894, p. 218. 
Body mostly red, often pale in front, and with some dark marks 
each side on abdomen; legs pale yellowish; eyes red; bristles white. 
Body (@) rather broader than usual, the legs plainly 
shorter than in most of the species; cephalothorax and 
abdomen with bristles in the usual positions and of 
} ordinary length; mandibular plate broad, scarcely taper- 
ing toward tip, which is broadly rounded and usually 
Fig. 8.—Tetrany. istinctly emarginate in the middle. Palpi short, male 
ae ae a with a tooth above on inner tip of tibia; the thuinb has 
(original), -«-SeVeral fine hairs on its tip (but indistinct); the claw is 
thick and much curved, and at inner base of thumb 
there is a thin plate or lamella (not seen in any other species). The 
tarsus is short; there is but one claw, which is long, curved only 
toward the tip, and not cleft. 
The typical specimens were found on the upper side of chestnut and 
oak leaves in the woods near Sea Cliff, N. Y. Other specimens have 
been seen from oak at Washington, D. C., and from Geneva, N. Y., 
on a Norway spruce hedge. 
