S. Mahunka szerk.: Folia Entomologica Hungarica 48. (Budapest, 1987)

males during March and April carried mites. These percentages gradually decreased during the summer months. Month No. of extracted flies female male flies with mites female male Total fly % with mites March April May June July 84 78 102 66 26 43 52 37 40 6 39.28 33.33 24.50 10.60 0.0 27.90 30.76 24.32 7.50 0.0 127 130 139 106 32 35.43 32.30 24.46 9.43 0.0 Table 1. Scutacarus longitarsus Berl. on sphaerocerid fly Leptocera nigra Olivier taken from debris around fig trees, from March to July, 1985 NORTHON and IDE (1974) recorded from 400 sampled flies only 2 % infestation at two sites with a maximum of four mites per fly; but this rate seemed higher in other months. We wish to thank Dr. L. PAPP, Hungarian Natural History Museum, Budapest, Hungary for the determination of the host flies. REFERENCES BINNS, E. S. (1972): Arctoseius cetratus (Sellnick) (Acarina: Ascidae) phoretic on mushroom sciarid flies. - Acarologia, 14: 350-356. BINNS, E. S. (1973): Digamasellus fallax Leitner (Mesostigmata: Digamasellidae) phoretic on mushroom sciarid flies. - Acarologia, lj>: 10-17. BINNS, E. S. (1979): Scutacarus baculitarsus Mah. (Acarina: Scutacaridae) phoretic on the mushroom phorid fly Megaselia halterata (Wood). - Acarologia, 21: 91-107. DELFINADO, M. D. and BAKER, E. W. (1976): New species of scutacaridae associated with Insects. - Acarologia, 18: 264-301. HUSSEY, N. W. (1959): The biology of mushroom phorids. - Mushr. Sei., 4: 260-270. KARAFIAT, H. (1959): Systematik und Ökologie der Scutacariden. - In: STAMMER H.J.: Beiträge zur Systematik unk Ökologie Mitteleuropäischer Acarina. - 1_, 2: 627 - 712. NORTON, R. A. and IDE, G. S. (1974): Scutacarus baculitarsus n. subsp. (Acarina: Scutacaridae) from commercial mushroom houses with notes on phoretic behaviour. - J. Kans. Ent. Soc, 47: 527-534. Authors' address: Dr. A. M. ZAKI Dr. A. A. OSMAN Dr. E. T. E. DAR WISH Plant Protection Department Menonfia University Shebin El Kom Egypt