Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-27T11:29:22.328Z Has data issue: false hasContentIssue false
  • English
  • Français

A Comparison of a Group of Gall Midges of the Genus Thomasiniana Strand, E. 1916 and a Description of a new Species from wild Blackberry*

Published online by Cambridge University Press:  10 July 2009

R. S. Pitcher
R. S. Pitcher
Affiliation:
East Malling Research Station.
Get access Rights & Permissions [Opens in a new window]

Extract

A comparison is made of all the members of the genus Thomasiniana Strand at present known from Rosaceous host-plants, namely T. oculiperda (Rübs.), the Red Bud Borer; T. theobaldi Barnes, the Raspberry Cane Midge; T. crataegi Barnes, the Hawthorn Stem Midge and a hitherto undescribed species from wild blackberry. Although morphologically very similar, each can be readily distinguished in trials on host-plant preference. By this means it has also been shown that there are two strains, favouring apple and rose respectively, within the present species T. oculiperda. Other biological and some morphological evidence is given, supporting the above conclusions, and on this basis the midge from blackberry is put forward as a new species for which the names Thomasiniana fruticosi, sp. n. and “Blackberry Cane Midge” are proposed and a formal description given. The biological and economic status of each species or strain is discussed and a list of the known parasites given.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 46 , Issue 1 , April 1955 , pp. 27 - 38
Copyright
Copyright © Cambridge University Press 1955

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barnes, H. F. (1931). Observations on gall midges affecting fruit trees.—J. S.-E. agric. Coll. Wye., 28, pp. 170–177.Google Scholar
Barnes, H. F. (1939). Some gall midge species and their host plant range. —Ann. appl. Biol., 26, pp. 318–347.Google Scholar
Barnes, H. F. (1944). Investigations on the Raspberry Cane Midge, 1943–44.—J. R. hort. Soc., 69, pp. 370–375.Google Scholar
Barnes, H. F. (1953 a). The biological approach to the species problem in gall midges (Dipt. Cecidomyidae).—Ann. ent. fenn., 19, pp. 2–24.Google Scholar
Barnes, H. F. (1953 b). Description of the new gall midge found by M. R. Pussard on lavender, together with notes on the damage caused by some other species (Dipt. Cecidomyidae). —Bull. Soc. ent. Fr., 58, pp. 125–128.CrossRefGoogle Scholar
Grandi, G. (1951). Introduzione allo studio dell' entomologia, 2, p. 310. Bologna, Edizioni Agricole.Google Scholar
Pitcher, R. S. (1952). Observations on the Raspberry Cane Midge (Thomasiniana theobaldi Barnes) I. Biology. —J. hort. Sci., 27, pp. 71–94.CrossRefGoogle Scholar
Pitcher, R. S. & Webb, P. C. R. (1952). Observations on the Raspberry Cane Midge (Thomasiniana theobaldi Barnes). II. “Midge blight”, a fungal invasion of the raspberry cane following injury by T. theobaldi. J. hort. Sci., 27, pp. 95–100CrossRefGoogle Scholar
Rao, S. N. (1951). Descriptions of two new genera and nine new and one known species of gall midges (Itonididae: Diptera) from India.—Indian J. Ent., 11, pp. 109–127.Google Scholar
Wilson, G. Fox & Green, D. E. (1944). Observations on two raspberry troubles.—J. R. hort. Soc., 69, pp. 79–86.Google Scholar