Walnut aphids in California . , Monellia caryx: Male pupa.(Original.) 26 BULLETIN 100, U. S. DEPARTMENT OF AGRICULTURE. ductive organ white, when extended about as long as antennal joint IV. Beak paleyellow, extending a little beyond the first pair of coxae. Sterna and apical half ofthe underside of the head dark brown. Very often one or more of the dusky abdominalspots are absent. Measurements: Length of body, mm.; width of body, mm.;wing expanse, mm.; cauda, mm.; antennal joint I, mm.; joint II, mm.; joint III, mm.; joint IV, mm.; joint V, 0.
Walnut aphids in California . , Monellia caryx: Male pupa.(Original.) 26 BULLETIN 100, U. S. DEPARTMENT OF AGRICULTURE. ductive organ white, when extended about as long as antennal joint IV. Beak paleyellow, extending a little beyond the first pair of coxae. Sterna and apical half ofthe underside of the head dark brown. Very often one or more of the dusky abdominalspots are absent. Measurements: Length of body, mm.; width of body, mm.;wing expanse, mm.; cauda, mm.; antennal joint I, mm.; joint II, mm.; joint III, mm.; joint IV, mm.; joint V, mm.; jointVI, mm.; filament, mm. Described from four specimens collected at San Jose, Cal., in Fig. 13.— Monellia caryx: Winged male, a, Left antenna. (Original.) THE LITTLE HICKORY APHIS (Monellia caryella Fitch). Aphis caryella Fitch, [First] Report on the noxious, beneficial, and other insects of the State of New York, Albany, p. 163-165, caryellus Fitch, Third report on the noxious and other insects of the State of New York, Albany, p. 448-449, caryella, Oestlund, Geol. & Nat. Hist. Survey Minn. Bui. 4, p. 45, 1887. HISTORY OF THE SPECIES. The little hickory aphis was first collected in New York State byDr. Asa Fitch, previous to the year 1855. The following is Fitchsoriginal description: The Little Hickory Aphis (Aphis caryella) is pale yellow with white antennae whichare alternated with black rings, the wings are transparent and without spots, theirveins slender and pale yellow, the legs yellowish white to their ends. Length the tips of the wings. The abdomen is depressed, egg-shaped, its apex slightly WALNUT APHIDES IN CALIFORN
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