. Bulletin of the Department of Agriculture. Agriculture; Agriculture. WALNUT APHIDES IN CALIFORNIA. 15. Fig. 6. ChromapMs juglandicola: Oviparous female, penultimate instar. (Original.) or dusky gray legs and antennae. The oviparous or sexual female molts four times but does not differ in appearance from the viviparous form until the third molt is passed. THE OVIPAROUS FEMALE, AFTER THE THIRD MOLT (FIG. 6). Rather smaller and narrower than the full-grown form. General color pale gamboge- yellow, sometimes lemon yellow. Body twice as long as wide. Eyes bright red. Head with six erect, cap
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. WALNUT APHIDES IN CALIFORNIA. 15. Fig. 6. ChromapMs juglandicola: Oviparous female, penultimate instar. (Original.) or dusky gray legs and antennae. The oviparous or sexual female molts four times but does not differ in appearance from the viviparous form until the third molt is passed. THE OVIPAROUS FEMALE, AFTER THE THIRD MOLT (FIG. 6). Rather smaller and narrower than the full-grown form. General color pale gamboge- yellow, sometimes lemon yellow. Body twice as long as wide. Eyes bright red. Head with six erect, capitate spines on the anterior margin. Antennae short, reaching barely to the middle of the mesothorax; 7-jointed, joint III the longest, joints IV and V subequal, joint VI longer than its spur or filament. Spur dusky, rest of anten- nae pale lemon yellow. Head, thorax, and ab- domen with two longitudinal rows of oval black spots on the dorsum. Thorax and abdominal segments 1-5 with two lateral longitudinal rows of circular black spots, on which are situated small tubercles bearing capitate hairs. Such tubercles also occur on the black dorsal spots. Eighth segment of the abdomen unmarked, bearing on its posterior margin a fringe of six capitate hairs. Legs pale greenish-yellow with the characteristic knee spot on the hind femora only; tarsi gray. Cornicles on the sixth segment, quite small, wider than long, pale lemon-yellow. Cauda equal in length to the hind tarsus, pale yellow, rounded. Beak very pale, almost white, reaching to the anterior coxae. Measurements: Length of body, mm.; width of body, mm.; antennae, joint I, mm.; joint II, mm.; joint III, mm.; joint IV, mm.; joint V, mm.; joint VI, mm.; fila- ment, mm. Described from specimens collected at Walnut Creek, CaJ., and San Jose, Cal., October 16 to 26, 1912. THE OVIPAROUS FEMALE, ADULT STAGE (FIG. 7). General color gamboge, varying in newly molted examples to lemon yel-
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