C. (Hydrodromia) wesmaelii (Macquart)RI, Forsand: Songesand, EIS 7, 13 April1982, 1 0- ; 2 October 1982, 1 ~ ; 13 March1983,60-0- ,2 ~~ , 1 o-~ (in copula)(RW)( 10- , 1 ~ in 2MB); 31 March 1983, 1 ~ ; 1 April1983, 1 ~ .ACKNOWLEDGEMENTSMy sincere thanks go to F. Midtgaard, A.-J.Nilsen, K. Rognes and S. Svendsen for thegifts of material; to L. Greve J ensen for helpwith literature, information and loan of specimensfrom 2MB; to Dr. M. Bartak, Pecky,and Dr. R. Wagner, Schlitz, for kindly havingchecked some of my identifications; and toMr. Tor Aasen, Sjernar0Y, for checking thelanguage.REFERENCESBartak, M. 1982. The Czechoslovak species ofRhamphomyia (Diptera, Empididae), withdescription of a new species from Central Europe.Acta Univ. Carolinae-Biol. 1980, 381461.Collin, J.E. 1961. British flies. VI: Empididae.Cambridge University Press, 782 pp.Engel, E.G. 1938-1954. Empididae. - In: E.Lindner (ed.): Die Fliegen der palaearktischenRegion, Band IV 4, 1-400.Frey, R. 1954-56. Empididae. - In: E. Lindner(ed.): Die Fliegen der palaearktischen Region,Band IV, 4, 400-639.Siebke, H. 1877. Enumeratio Insectorum Norvegicorum.Fasciculum IV. Catalogum DipterorumContinentem. A. W Br8gger, Christiania,255 pp.Straka, V. 1975. Spracovanie rodu Hilara Meig.(Diptera, Empididae) na uzem'i CSSR. BiologickePrtice 5: 1-155.Vaillant, F. 1981. Dipteres Empididae Hemerodromiinaenouveaux ou peu connus de la regionpalearctique (premiere partie). Bonn.zool. Beitr., 32: 351-408.0kland, K.A. 1981. Inndeling av Norge til brukved biogeografiske oppgaver - et revidertStrandsystem. Fauna, Oslo 34,167-178.Received 2 June 198640
Influence of temperature on the egg-stage of'Capnopsis schilleri (Plecoptera; Capniidae)l0YVIND HALANDHAland, 0. 1987, Influence of temperature on the egg-stage of Capnopsis schilleri(Plecoptera; Capniidae). Fauna norv. Ser. B 34,41-44.The egg incubation time, the hatching success and the duration of the hatching of eggsof Cap.nopsis schil/eri were studied at seven different constant temperatures (2°_24°C) In the laboratory. The mean incubation time in the interval 4°-20°C could bedescri~ed by the equation Y = 429.T_1,24 where Y is time in days and T is temperature.Eggs did not hatch at 2 C, and only a few at 24°C, where they needed more time than at20°C. The eggs needed on average 264 day-degrees to hatch.0yvind HAland, Zoological Museum, University of Oslo, Sarsgt. I, N-0562 Oslo 5,Norway.Present address: Horvnesvn. 106,8800 Sandnessj0en, Norway.INTRODUCTIONIn their study of the egg biology of the stoneflyCapnia atra Morton, Brittain et al. (1984)found that different populations differed inegg size and size of l.st instar nymphs, butshow~d basically the same relationship betweenegg incubation time and temperature.The last mentioned fact made it possible alsoto predict the hatching time of eggs fromother populations.One aim ofthe present study was to investigatethe relationship between egg incubationtime and temp.erature in a population of Capnopsisschilleri (Rostock) in the vicinity ofOslo. C. schilleri is distributed throughoutmost of Europe, and has also been found inTunisia in North Africa (Berthelemy 1973).It is thus subjected to very different environmentalconditions, but still probably maintainsa univoltine life cycle everywhere(Berthelemy 1973, Lillehammer 1975b). Apaper under preparation will report on thestudy of the life cycle of C. schi//eri in thestream Sreterbekken near Oslo, where theeggs for this study were collected.Another aim ofthis study was to see ifthereis any tendency towards ovovivipary in C.schil/eri. This phenomenon has been observedin other species of the Capniidae (see Le.Harper & Hynes 1972).I Contribution No. 195, Zoological Museum,University of Oslo.The egg biology of C. schil/eri has beenstudied to some degree before by Berthelemy(1973) under fluctuating temperatures, andby Lillehammer (1975b) under 4°C constanttemperature. Lillehammer (1975b) foundquite great differences in egg incubation timefor two different egg batches of C. schil/eri.MATERIAL AND METHODSAdult of C. schilleri were captured by thestream Sreterbekken near Oslo, Norway, inMay and June 1978 and 1979. The stream isd~scribed by Lillehammer (1975a), who alsogives temperature data for the stream over aperiod of three years. The adults werebrought to the laboratory in plastic boxes10-20 individuals in each box. In the bQxe~were also some moss, twigs, leaves, and asmall petri dish with water from the stream.The flies copulated in the boxes and laid theireggs in the dish. By having many flies in thesame box I got many eggs, but there might beseveral females who deposited their eggs inthe dish at the same time, so I could not knowthe size of the individual egg batches. In thefollowing the eggs found in a dish at one timeis treated as one egg batch. When eggs werefound in a dish, the dish was remov.ed, theegg.s were counted, and the dish was placed inan IDcubator, while a new dish was put in itsplace.6521 eggs in 25 batches were deposited.FaJPIQ no",. SeT. B. 34: 41-44. Oslo 1987.41
- Page 1 and 2: No. 11987SER. B VOL. 34NO. 1Norwegi
- Page 3 and 4: Professor Ole A. Srether 50 yearsFo
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- Page 7 and 8: Raddum, G. & O. A. Sa:ther 1981. Ch
- Page 9 and 10: Contribution to the knowledge of th
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- Page 14 and 15: Sverre Kobro, Carl Fredrik Liihr, R
- Page 16 and 17: -.Occurrence and life cycle of Dino
- Page 18 and 19: width of 1 2 3 4pronotum n: 19 13 I
- Page 20 and 21: LITTERAT.UREAubert, J. 1946. Les Pl
- Page 22 and 23: Fig. 1. Brachycaudus (Acaudus) popu
- Page 24: Nymphal development and food consum
- Page 27 and 28: espectively. At 20°C, mean number
- Page 29 and 30: than P. mali. Upon examination of t
- Page 31 and 32: The first record of Thaumalea ve"al
- Page 33 and 34: Bibio nigriventris Haliday, 1833 (D
- Page 35 and 36: ker 1 ~ 27 June 1873 (ZMO 11293). P
- Page 37 and 38: Megamerina dolium (Fabricius, 1805)
- Page 39 and 40: New Norwegian Empididae (s.str.) (D
- Page 41: A,H. obscura MeigenRY, Rennes0Y: F0
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- Page 47: Distribution and seasonal abundance
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- Page 52 and 53: ut from a zoogeographical point of
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- Page 57 and 58: area, Torne Lappmark (Tjeder 1978).
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- Page 63 and 64: etween summer and autumn. H. stigma
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- Page 78 and 79: Kallvellsj0enStroplsj0enKongsvoll B
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- Page 88 and 89: Sericothrips abnormis (Karny, 1909)
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Maltbrek, J. 1932. Frynsevinger. Da
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--_..- ---~---'Aug. 1977, a male Ap
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zur Kenntnis der Thermopilie bei Sp
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