Dr. Steinmann Henrik szerk.: Folia Entomologica Hungarica 23/1-12. (Budapest, 1970)

the first and second stage of development they are peeling on the abaxial surface of the leaf-blade, from the third stage of development they were chewing it through. The food consumption of the single stages of development were examined by surface-measurements on the base of an average consumption of 40 larvae. The consumption of leaf-surface is highest in the last larval instar, when 64,7-66,5 per cent of the food necessary to their development is consumpted. The control of Cladius pectinicornis GEOFFR. tend to kill larvae in L-^ instars when damaring is yet relatively lower. Its natural parasites are Rhorus (Monoblastus

) neustriae SCHRK. and R. (M.) binotatus KZB. Irodalom - References 1. BÁLÁS, G. (1966): Kertészeti növények állati kártevői (Budapest, p. 236-237). 2. BENSON, R.B. (1958): Handbooks for the identification of British Insects (London, p. 139-252). 3. CSALBUKOV, P. (1964): Lisztna osza po rozata (Cladius pectinicornis Geoffr.) (Rastit. Zasita., 12, (6), p. 4-6). 4. DITTRICH, R. (1924): Die Tenthredinidocecidien,durch Blattwespen verursachte Pflanzengallen und ihre Erzeuger (Zoological, 24, p, 632-633). 5. ENSLIN, E. (1918): Die Tenthredinoidea Mitteleuropas (Berlin, pp. 790). 6. FRANCKE-GROSMANN, H. (1953): Handbuch der Pflanzenkrankheiten (in: Sorauer, 5, (2), p. 204-205). 7. LORENZ, H. - KRAUS, M

. (1957): Die Larvalsystematik der Blattwespen (Berlin, pp. 339). 8. MARTINOVICH, V. (1967): Életmódtani vizsgálatok az Iris-levéldarázson (Fol. Ent. Hung., 20, p. 221-246). 9. MÓCZÁR, L. (1937)9 Rendzsertani tanulmány a hazai kürtösdarazsakról (Pol. Ent. Hung., 3» P* 1-62). 10. RICHTER, - BINNENTHAL, (1903): Rosenfeinde aus dem Tierreich (Stuttgart, p. 165-170).