32 Thomas Albert Williams 



On under side of leaves of Bur oak (Quercus macrocarpa). 

 Weeping Water, October 10, 1888; Ashland, October, 1889; very 

 plentiful all through the month. 



34. Callipterus punctata Monell. 



Monell, Bull. U. S. Geol. Sur. Ter., V, No. 1, p. 30 (1879). 

 Thomas, Ins. 111., Sth Rep., p. 198 (1879). 



Apterous form: Pale yellowish; dorsum with small tubercles from which 

 proceed capitate hairs of various lengths. Antennae not reaching honey 

 tubes, the latter longer than broad, concolorous with abdomen. Front 

 with 6-8 very long capitate white hairs and a shorter one on the inner 

 side of I and II, rest of antennae smooth, dusky, jointed; VII longer 

 than VI. Eyes red. 



Pupa: Similar, with pale wing-pads. 



Winged form: Color much as in apterous form, but with thorax and 

 some few markings on the abdomen darker. Head pointed in front. Eyes 

 red. Antennae shorter than body; pale, with tips of joints III-VI dusky; 

 VII longer than VI, dusky. Wings hyaline, with dusky markings at all 

 the tips of the oblique veins and the base of the stigmal ; subcostal and 

 stigma greenish white; the latter broad, angled at the base of the stigmal 

 vein, which is sharply curved. Honey tubes as in the apterous form, but 

 more conspicuous. Legs pale with dusky tarsi. Abdomen not tubercled, 

 but with a few capitate hairs. Length of body 1.70-2. 10 mm., to tip of 

 wings 3-3.40 mm. 



On under side of leaves of Bur oak (Quercus macrocarpa). 

 Ashland, May 28, 1890. 



I find specimens which lack the darker markings on the wings 

 and are larger, agreeing with the description of C. hyalinus, 

 together with the above; and upon the same leaf specimens with 

 only a part of the markings on the wings. I am of the opinion 

 that C. hyalinus is but a variety of C. punctata. 



35. Callipterus trifolii Monell. 



Monell, Can. Ent., Vol. XIV, p. 14 (1882). 



Apterous form: Yellow. The very young individuals have four longi- 

 tudinal rows of tubercles each with a single blackish capitate hair. In the 

 maturer individuals the tubercles are not arranged in longitudinal rows 

 (except sometimes the outer marginal row), but are in rather irregular 

 transverse rows on each segment, the whole dorsum being very thickly 

 covered with them, even to the head and thorax. Antennae reaching to 

 honey tubes. Length of body about 1.80 mm. 



Pupa: Similar but smaller and with whitish wing-pads. 



Il6 



