32 
BULLETIX 100, U. S. DEPARTMENT OF AGRICULTURE. 
ments: Length of body (average), 1.67 mm.; width of body (average), 0.61 mm.; 
wing expanse (average), 4.02 mm.; antenna, joint I, 0.053 mm.; joint II, 0.046 mm.; 
joint III, 0.41 mm.; joint IV, 0.335 mm.; joint V, 0.32 mm.; joint VI, 0.191 mm.; 
filament, 0.123 mm.; cauda, 0.084 mm.; Cornicles, 0.009 mm. 
Described from numerous specimens, Walnut Creek, Cal. ; October, 
1912. 
The Oviparous Forms. 
the oviparous female (fig. 16). 
Wingless. General color pale lemon-yellow, in mature individuals the central part 
of the abdomen diffused with orange. Body elliptical, *widest at the third abdominal 
segment. Antennae half as long as the body, not on frontal tubercles, pale, with 
Fig. 16. — Monellia caryella: Oviparous female. (Original.) 
an apical black ring on joints III to VI, inclusive; joints I, II, and filament dusky; 
joint IIT longest; joints IV and V subequal and each about four-fifths as long as joint 
III ; filament a little shorter than VI ; VI about four-fifths as long as V. Eyes crimson. 
Legs pale yellow; tarsi dusky. Hind tibiae slightly thickened. Cornicles very 
small, pale. Cauda pale, globular, beset with a fringe of weak hairs, not as long as 
the hind tarsi. Thorax and abdomen with six longitudinal rows of capitate bristles, 
each surmounting a pale tubercle. Penultimate segment of the abdomen encircled 
near its posterior margin with a fringe of weak hairs. Eight capitate spines on the 
