456 EXPERIMENT STATION RECORD. 



Brief notes are given on several associated insects, namely, the yellow-necked 

 flea beetle (Disonycha mellicollis) , the spinach flea beetle (D. xanthomelwna) , 

 and the Hawaiian beet webworm (E. fasaialis). 



The natural enemies mentioned are the spined soldier bug {Podisus maculi- 

 ventris) and a small braconid {Hemitcles sp. ). 



A bibliography of S titles is appended. 



Notes on cotton moths, H. G. Dyae (Insecutor Inscitice'Menstruus, 1 (1913), 

 No. 1, pp. 12). — A table is given for the separation of the 27 species the larva; 

 of which feed on cotton in America. These belong to the genera Alabama (1), 

 Cosmophila (1), Gonitis (2), and Anomis (23). One species of Gonitis and 7 

 of Anomis are described as new. 



Maize pests, C. R. Jones {Philippine Agr. Rev. [English Ed.]. 6 {1913), 

 No. 3, pp. 115-117, fig. 1 ) . — The larvse of 3 distinct species of Noctuid?e, namely, 

 Prodenia litteraUs, Spodoptera mauritia, and Chlorida ohsoJeta, have thus far 

 been found injuring corn in the Philippines. 



The codling moth and one spraying' in the Hudson Valley, E. P. Felt 

 (Jour. Econ. Ent., 6 {1913), No. 2, pp. 11 3-177 ) .—This is a report of the work 

 carried on during 1912 in continuation of that conducted during the previous 

 3 seasons (B. S. R., 28, p. 156), 



The work emphasizes the conclusions drawn in the paper previously noted 

 that for the Hudson Valley at least, in normal seasons when the crop is 

 abundant or fairly so, one thorough early spraying within a week or 10 days 

 after the blossoms fall should result in securing from 95 to 98 per cent of 

 sound fruit. The author's records show that the benefit resulting from 2 

 later sprayings is comparatively small so far as controlling the codling moth 

 is concerned, though ample to meet the cost of the poison and, in many instances, 

 probably the expense of treatment. 



Life histories of Syrphidse, Part V, C. L. Metcalf {Ohio Nat., 13 {1913), 

 No. 5, pp, 81-93, figs. SO).— This fifth paper (E. S. R., 28, p. 254) deals with 

 Syrphus xanthostoma (the so-calle^l Pemphagus-gall syrphus fly), Eristalis 

 csneus, and Didea fasciata fuscipcs. 



The larvse of 8. xanthostoma studied were collected in July on the poplar 

 (Populus tremuloides) in the well-known, characteristic galls on the ends of 

 the twigs, made by Pemphagus vagahundus. Of 3 specimens taken on July 7, 

 1 pupated on July 11 and the other 2 the following day ; the former emerging 

 as an adult on July 18 and the latter 2 on July 20. 



An adult of E. wneus collected deposited about 100 eggs within IJ hours, a 

 considerable number hatching within 24 hours. Numerous lan^ae were col- 

 lected in evaporating vats at a sewage disposal plant in September. They were 

 found in large numbers floating about in the very putrid, watery material, 

 their food undoubtedly being the various decaying materials in the sewage. 

 Pupae taken about the middle of September emerged as adults September 26, 

 so that the duration in this stage was at least 10 days to 2 weeks. 



The eggs of D. fasciata fuscipes were found scattered singly along the under- 

 side of the low, spreading, more or less horizontal branches of the sycamore 

 {Platanus Occident alls) at a time in fall when the colonies of aphids {Longi- 

 stigma caryce) were just being established Larvfe apparently 5 or 6 days old 

 were taken on sycamores at Columbus on September 28, 1911. 



The life history of a bee fly (Spogostylum anale) parasite of the larva 

 of a tiger beetle (Cicindela scutellaris var. lecontei), V. E. Sheilford {Ann. 

 Ent. 8oc. Amer., 6 {1913), No. 2, pp. 213-225. figs. i7).— This paper is based 

 upon the collection and rearing to maturity of about 2,000 host larvae, some 7 

 per cent of which were found to be parasitized- 



