588 



Surface (H. A.). Habits of the Red Leaf Beetle. — Zool. Press Bully. 

 Penns. Dept. Agric, Harrisburg, no. 323, July 1915. 



Galerucella cavicollis proved very destructive in 1914 in Pennsylvania 

 and is now increasing and spreading to an alarming extent. It attacks 

 the leaves of plants by eating away the underside, and sometimes 

 making holes ni the leaves. The foliage of cultivated sour-cherry 

 trees suffers most, considenible damage being also done to the leaves 

 of peach, pear and apple, waile tomatoes and a few other plants are 

 also attacked. Spraying with a solution of 1 oz. lead arsenate in 

 1 TT.S. gal. of water is entirely effective. Investigations show that 

 this species, unhke the elm leaf beetle {G. luteola). lays its eggs on or 

 near the surface of the ground, especially where the soil is moist. The 

 larvae bore down through the soil, and feed on the roots of the tree of 

 which the beetles attack the foliage. The ground under infested trees 

 should be well hoed twice weekly for two or three weeks in order to 

 control the larvae. 



Wilson (H, F.). Miscellaneous Aphid Notes, chiefly from Oregon. — 

 Trans. American Enfom. Soc, Philadelphia, xli, no. 2, June 1915. 

 pp. 85-108, plates 5-11. 



The life-cycle of Prociphilus fraxini-drpetalae in Oregon is passed on 

 Fraxinus oregona and probably on P seudotsuga taxifolia as an inter- 

 mediate host. In spring, the Aphid appears on the leaves of the ash, 

 causing a gall-Uke formation. Inside the curled leaves the stem- 

 mothers produce forms which become alate and disappear from the 

 ash about the first week in June. These forms are thought to go to the 

 roots of Douglas fir and there produce the first of a series of summer 

 generations of apterous females. In the autumn some of the Aphids 

 present on the roots migrate to the ash and give rise to sexual forms. 

 Those remaining continue to feed and can be found in all stages 

 throughout the year. The females, after pairing, produce a single 

 egg, in which stage the winter is passed on the ash. P. bwneliae on 

 red and white ash has been imported into Oregon. This species feeds 

 on the tips of the shoots, not on the leaves, as does P .fraxini-dipetalae- 

 Several species are found on Artemisia (sage). Chaitophonis tridentatae 

 occurs round the base of the leaf and flower stems. Microsiphum 

 canadense, M. artemisiae, M. oregonense, Aphis reticulata, A. oregon- 

 ensis, and A. hermistonii have been recorded. Aphis tridentatae was 

 found together with M. artemisiae and C. tridentatae during May 

 and June. Macrosiphiim artemisicola occurred on Artemisia vulgaris. 

 M. artemisiae was found in all parts of Oregon where A. tridentata was 

 grown. A detailed description of the above species is given. The 

 following new species are described : Amphorophora subterrans. 

 collected on roots of Dactylis glomerata ; Macrosiphum mentzeliae, 

 found on Mentzelia ; Aphis lithospermi, common on Lithospermmn 

 pilosum during June and July ; Macrosiphiim pteridis, found throughout 

 western Oregon on Pteris aquilina ; Lachnus laricifoliae and L. oregon- 

 ensis on Larix Occident alis and the cones of Pinus sp. respectively ; 

 and L. parvus, occurring in rows along the needles of Pinus virginiana 

 and P. rigida. 



