15 
Tetranychus telarius Linn. 
Acarus telarius Linn.—Fn. Suec., 481, No. 1974. (1761). 
Tetranychus lintearius Dufour.—Ann. Sci. Nat., X XV, p. 276. 
Color variable, often yellowish green, with black spots at sides of 
body, and sometimes at tip; legs pale; eyes red. Body rather broad 
in 9, considerably tapering behind in the ¢.  Bristles in the usual 
arrangement, the frontal and subfrontal pair as near the front margin 
as in other species (Berlese figures them much 
farther back), subfrontal pair twice as long as 
frontal. The palpi are quite prominent, the 
male has a spur above on tip of the tibia, the 
thumb bears on its tip three fingers; seen from 
the side the lower one is plainly larger than 
the others—those nearer the claw. The man- 
dibular plate is about twice as long as broad, 
not much tapering toward tip, broadly rounded 
at tip, and with a faint median notch; the 
stylet is split nearly to plate. The legs are 
moderately long; femur I over twice as long 
as broad; tibia I plainly longer than patella 1; Fs. 12.— Tetranyehus telarius: 
é E 3 palpus and mandibular plate— 
tarsus quite long, ending in a claw strongly — entargea (original). 
bent near middle and four-cleft beyond. I am 
not certain that this is the European species, but it has the characters 
of 7. telarius, and does not differ, so far as I can see, from a specimen 
of 7. telarius from Italy. The legs are a trifle more slender than in 
our other species. Specimens have been studied from Melrose High- 
lands, Middlesex County, Mass., on ash; from Waterville, N. Y., on 
hops; and from Fort Collins, Colo., on maple. Apparently it is not 
a very common species with us. 
Tetranychus sexmaculatus Riley. 
Tetranychus secmaculatus Riley.—Insect Life, Vol. II, p. 225. 
Pale greenish-yellow, with six usually large dusky patches above, 
three on each side; legs and palpi pale. Palpi of moderate length; in 
male with a spur above on inner tip of tibia. The thumb is quite stout 
and bears on its tip three fingers, of which the middle 
one (seen from the side) is the largest. Mandibular 
plate rather slender, narrowed toward tip, which is broadly 
rounded, scarcely a trace of the median notch; bristles 
of body in the usual arrangement, the subfrontal pair 
Fig.13.—Tetrany- scarcely twice as long as the frontal pair. Legs rather 
reed bol aad shorter than in 7: ¢elarius, the tibia I plainly longer than 
enlarged(origi' patella I; tarsus I shorter than usual, the claw strongly 
wa bent near middle and four-cleft beyond. 
Specimens from various parts of Florida on orange, and some 
marked San Diego, Cal., on orange. This species appears to be smaller 
