GALL MIDGES ECONOMIC IMPORTANCE - KrishiKosh

26 Gall Midges of Economic importanceflowers remain closed and in a bunch. The larvae are yellowishorangeand gregarious. Del Guercio gave figures of the larvaand gall. He also mentioned an unidentified Chalcid parasite.I *BROAD BEAti{Vicia faba h.)The pea midge {Contarinia pisi Winnertz) has been recordedon this plant (see p. 72). In addition, Bagnall & Harrison (7)recorded finding red larvae in galls similar to those ofAsphondylia lathyri Riibsaamen (173) in the pods of cultivatedbeans in Durham.A Profeltiella species also lives on broad bean. In August,1941, J. H. Stapley found larvae of this genus inside the stalksof broad bean in the Cambridge province, England. Femalemidges were reared from the larvae by the author. Both larvaeand females are in the Barnes collection. The larvae of thetype species, P. ranunculi KiefTer (105), of this genus are statedto feed with the larvae of another gall midge^ Geodiplosisranunculi KieflFer (105), on the roots of Ranunculus acer inGermany and England (6). Another species, which may bewrongly placed generically, is P. orientalis Felt (64), which wasreared in association with the gall midge Kamptodiplosis reductaFelt (64) from leaf galls on Siphonodon celastrineus in thePhilippine Islands. Two other species, P. dizygomyzac Barnes andP. vespicoloris Barnes, will be considered in a later Volume.The remaining species, of the genus is P. soya (Monzen), whoselarvae live in the petioles and stems of the soy bean in Japanand are considered a pest. This species will be dealt with inVol. II.CARROT {Daucus carota L.)Two gall midges have been recorded as attacking this plant,viz. Lasioptera carophila F. Loew, whose larvae live in galls onthe umbellules, and Kiefferiapimpinellae (F. Loew), whose larvaelive in the swollen fruit. L. carophila will be dealt with in alater volume as a caraway pest, since it is on this plant thatit has been recorded as a -pest.