Hostname: page-component-77c89778f8-sh8wx Total loading time: 0 Render date: 2024-07-22T22:57:38.052Z Has data issue: false hasContentIssue false
  • English
  • Français

Hymenopterous Parasites of Willow Insects

Published online by Cambridge University Press:  10 July 2009

E. McC. Callan
E. McC. Callan
Affiliation:
Entomology Department, Imperial College of Tropical Agriculture, Trinidad, B.W.I.
Get access Rights & Permissions [Opens in a new window]

Extract

1. Eight Ichneumonoidea, fourteen Chalcidoidea and six Proctotrupoidea are recorded as parasites of willow insects.

2. The majority of records are of parasites bred from insects inhabiting the wood of the cricket bat willow, Salix alba var. caerulea, Smith, the more important being Torymus pulchellus, Thoms., Tridymus salicis, Nees, Eupelmus urozonus, Dalm., Microterys clavellatus, Dalm., Tetrastichus roesellae, DeG., Tetrastichus inunctus, Nees, Tetrastichus flavovarius, Nees, Tetrastichus ? acuminatus, Ratz., and Platygaster sp.

3. Microterys clavellatus is recorded for the first time as a parasite of Cecidomyiidae.

4. Evidence is given for the separation of the gall-midges, Rhabdophaga sp. and R. saliciperda, Duf., as distinct species based both on structural differences and on a study of their parasites, for the three parasites found most commonly attacking Rhabdophaga sp. were never bred from R. saliciperda, and the most common species parasitizing R. saliciperda was never obtained from Rhabdophaga sp.

5. It is confirmed that Eurytoma salicis, Thoms., supplements its animal diet with vegetable food.

6. The rate of parasitism of Euura atra, Jur., by Eurytoma salicis is given as 19·8 per cent., and that of Rhabdophaga sp. by Platygaster sp. as 40·5 per cent.

7. Histograms are given of Rhabdophaga sp. and its parasites, Torymus pulchellus, Thoms., Tetrastichus roesellae, DeG., and Platygaster sp., the emergence of Platygaster sp. coinciding approximately with that of its host.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 31 , Issue 1 , April 1940 , pp. 35 - 44
Copyright
Copyright © Cambridge University Press 1940

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. (1934). Studies of fluctuations in insect populations. III. The gall midge, Rhabdophaga heterobia H. Lw., on Black Maul variety of Salix triandra at Syston, Leicestershire, 1927–33.—J. Anim. Ecol., 3, pp. 165–181.Google Scholar
Barnes, H. F. (1935). On the gall midges injurious to the cultivation of willows. II. The so-called “shot-hole” gall midges (Rhabdophaga spp.).—Ann. Appl. Biol., 22, pp. 86–105.CrossRefGoogle Scholar
Callan, E. McC. (1939). Assembling of Thersilochus rufiventris Brisch. (Hym. Ichneumonidae).—J. Soc. Brit. Ent., 1, pp. 244–245.Google Scholar
Callan, E. McC. (1940). Insects bred from stumps of Salix viminalis L.—J. Soc. Brit. Ent., 2, pp. 21–22.Google Scholar
Carleton, M. (1937). A new Ichneumonid, Scopimenus pygobarbus, parasitic on Nematus proximus Lep.—Ent. Mon. Mag., 73, pp. 61–63.Google Scholar
Hoffmeyer, E. B. (1930). Beiträge zur Kenntnis der dänischen Callimomiden, mit Bestimmungstabellen der europäischen Arten (Hym., Chalc.).—Ent. Medd., 17, pp. 232–285.Google Scholar
Mayr, G. (1878). Arten der Chalcidier-Gattung Eurytoma durch Zucht erhalten.—Verh. zool.-bot. Ges. Wien, 28, pp. 1–38.Google Scholar
Nielsen, J. C. (1906). Beiträge zur Biologie der Gattung Cryptocampus.—Z. wiss. Insektenbiol., 2, pp. 44–47.Google Scholar
Nixon, G. E. J. (1937). The British species of Dacnusa (Hym., fam. Braconidae).—Trans. Soc. Brit. Ent., 4, pp. 1–88.Google Scholar