21 6 PSYCHE [Oct.— Dec. 



Scutellum with a deep channel throughout and with transverse ridges 



Onychia Haliday 

 5. See my table from 2 for the other genera. 



Abbe Kieffer in Wytsman's Genera Insectorum, Fam. Cynipidae, p. 9, has 

 incorrectly included Soleiiaspis Ashm. with the Onychiinae : it is 2i genuine Figitine 

 and not an Onychiine. 



SOME APHIDS ASSOCIATED WITH ANTS. 



BY WILMATTE PORTER COCKERELL, COLORADO SPRINGS, COL. 



The species of Lasius which occur here attend both aphids and mealy bugs in 

 large numbers and great variety. During the past two years my husband and I 

 have made somewhat extended observations on the behavior of the ants toward 

 their captives and upon the distribution both of the ants and their prisoners. We 

 are indebted to Dr. Wm. M. Wheeler for the identification of the ants. 



The species of ants studied make their nests under flat stones. In this climate 

 the ants are active during the most of the winter, and live in the corridors under 

 the stones, except in very severe weather, when they retire into their subterranean 

 chambers carrying their aphids and coccids with them. In the long droughts to 

 which this region is subject the ants are obliged in most places, to live far under- 

 ground, and after such a siege the number of aphids and coccids is small. In the 

 summer, which is the rainy season, the ants' nests are often greatly extended and 

 large chambers are made about the roots of plants. 



FORDA KINGII, Sp. nOV. 



$ Bodj oval or ovate, gra}' drab to greenish with sutures inconspicuous. Head not 

 distinct from the rest of the body; eyes small but distinct. The whole body including 

 antennae is sparsely hairy. The cauda is a distinct rounded tail decidedly hairy on the end. 

 Legs as in Tychea lasii. 



Antennae five jointed, short, and slender ; first and second joints subequal, tiiird about 

 three times as long as second, fourth about as long as second, fifth with a short cylindrical 

 spur about one half the diameter of the segment and including spur only slightly longer 

 than the fourth. Sensoria distinct. Length of antennal joints (i) 60 (2) 60 (3) 135 (4) 60 



is) 78 + 12 |X. 



Hab. — Found in nests of Lasius clavige/-, L. JlaTus, Formica sp., L. ameri- 

 canits, at Lawrence, Mass., Andover, Mass., Methuen, Mass. Collected by Mr. 

 George B. King who writes : "feed on roots of grass in ants' nests under stones ; 

 young are brownish." 



