130 



Gillette (C. P.). Two New Aphid Genera and some New Species. — 

 Canadian Entomologist, London^ Ont.^ xlix, no. 6, June 1917, 

 pp. 193-199, 1 plate. 



A new genus, Tliripsaphis, with T. ballii, Gill., as the type, is erected 

 in this paper. Tliis Aphid is generically distinct from Saltusaphisy 

 Thee, in which it was formerly included. The males, so far as known, 

 are apterous and very small, and the females secrete waxy threads 

 with which they cover their eggs. T. verrucosa, sp. n., is a closely 

 allied form, and T. producta, sp. n., is the most abundant species in 

 Colorado, occurring upon Carex. Another new genus, Aspidaphis, is 

 represented by A. polygoni, sp. n., first taken on Polygonum sp. (knot- 

 grass or door- weed) in Colorado. It closely resembles the colour of the 

 under-side of the leaves and of the stems of the different species of 

 Polygonum, which are its sole food-plants. . 



Gibson (E. H.). Two New Species of Dicyphus from Porto Rico, 

 (Miridae, Heteroptera). — Canadian Entomologist, London, Ont., 

 xlix, no. 6, June 1917, pp. 218-219. 



Two Capsid bugs, Dicyphus prasinus, sp. n., and D. luridus, sp. n., 

 that have proved injurious to tobacco plants in Porto Rico are here 

 described. 



Fisher (W. S.). A New Species of Agrilus from California.^ — Canadian 

 Entomologist, London, Ont., xlix, no. 8, August 1917, pp. 287-289. 



A description is given of Agrilus burJcei, sp. n., which has been 

 confused with A. politus, Say, to which it is closely allied, but from 

 which it differs chiefly in colour and habits. The larvae mine in the 

 inner bark and wood of normal, injured, and dying white alder {Alnus 

 rhombifolia), and paper-leaf alder {A. tenuifolia). 



DiCKERSON (E. L.). Notes on Leptobyrsa rhododendri, Horv. — Jl. New 

 York Entom. Soc., Lancaster, Pa, xxv, no. 2, June 1917, 

 pp. 105-112. 



An account is given of the life-history of Leptobyrsa rhododendri, 

 Horv., which has previously been recorded in America under the name 

 L. explanata, Held. This insect has a wide distribution from Massa- 

 chusetts to Florida and westwards to Ohio and has been introduced 

 into Europe on imported nursery stock. It occurs on Rhododendron 

 maximum, Kalmia latifolia, and azaleas, feeding on the under-surface 

 of the leaves. 



EwiNG (H. E.). Parthenogenesis in the Pear-slug Saw-fly. — Ann. 

 Entom Soc. America, Columbus. Ohio, x, no. 4, December 1917, 

 pp. 330-336. 



Eriocampoides limacina {Caliroa cerasi) (common pear-slug or cherry- 

 slug) is a sawfly in which the males are so rare as to be practically 

 non-existent, and in which, therefore, parthenogenesis has long been 

 suspected to occur, though in Profenusa collaris, MacG. (cherry and 

 hawthorn sawfly leaf-miner) the proportion of males and the life- 

 history appear to be normal. 



