SER. B VOL. 28 NO. 1 Norwegian Journal of Entomology
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"'T ... 1981 SER. B VOL. 28 NO. 1 Norwegian Journal of Entomology PUBLISHED BY ORSK ZOOLOGISK TIDSSKRIFTSE TRAL OSW Fauna norvegica Ser. B Norwegian Journal of Entomology Norsk Entomologisk Forenings tidsskrift Appears with one volume (two issues) annually norske biblioteker. Andre ma betale kr. 55, -. Disse Utkommer med to hefter pr. af. innbetalinger sendes til NZT, Zoologisk museum, Editor-in-Chief (Ansvarlig redaktor) Sarsgt. I, Oslo 5. Ole A. S<ether, Museum of Zoology, Museplass 3, Postgiro 2 3483 65. 5014 Bergen/Univ. Editorial Committee (Redaksjonskomite) FAUNA NORVEGICA B publishes original new in Arne Nilssen, Zoological Dept., Troms0 Museum, formation generally relevant to Norwegian entomo N-9000 Troms0, John O. Solem, DKNVS Museet, logy. The journal emphasizes papers which are main Erling Skakkes gt. 47B, N-7000 Trondheim, Albert ly faunistical or zoogeographical in scope or con Lillehammer. Zoological Museum, Sars gt. I, tent, including checklists, faunal lists, type catalogues Oslo 5. and regional keys. Submissions must not have been previously published or copyrighted and must not be Subscription published subsequently except in abstract form or by Members of Norw.Ent.Soc. will recieve the journal written consent of the Editor-in-Chief. free. Membership fee N.kr. 50,- should be paid to the Treasurer of NEF: Use Hofsvang, Brattvollveien NORSK ENTOMOWGISK FORtNING 107, Oslo 11. Postgiro 5 44 09 20. Questions about ser sin oppgave i a fremme det entomologiske stu membership should be directed to the Secretary of dium i Norge, og danne et bindeledd melJom de in NEF. Trond Hofsvang, P.O. Box 70, N-1432 As teresserte. Medlemskontingenten er for tiden kr. 50. NLH. Members of NOF receive the journal by pr. ar. Henvendelse om medlemskap i NEF sendes paying N.kr. 35, -, non-members by N.kr. 55, - to: sekret<eren: Trond Hofsvang, Postboks 70, 1432 As NZT, Zoological Museum, Sarsgt. I, N-Oslo 5. Post NLH. Medlemmer far tidsskriftet fritt tilsendt og kan' giro 2 34 83 65. Outside Fennoscandia: Additional abonnere til redusert pris pa FAUNA NORVEGICA postage Nkr. 5, - per year (surface mail). serie A (generell zoologi, I hefte pr. ad for kr. 15.- og pa serie C (ornitologi, 2 hefter pr. ad for kr. 25.-. Disse innbetalinger sendes til NZT.Zoologisk mu Abonnement seum, Sarsgt. I, Oslo 5. Medlemmer av Norsk Entomologisk Forening far Postgiro 2 3483 65. tidsskriftet fritt tilsendt. Medlemskontingent kr.50, innbetaIes tit kassereren i NEF: Use Hofsvang, Bratt vollveien 107, Oslo 11. Postgiro 5 44 09 20. Medlem mer av Norsk Ornitologisk Forening mottar tids Trykket med bidrag fra Norges almenvitenskapelige skriftet ved a betale kr. 35,-, dette gjelder ogsa forskningsrad. Opplag 800 Norsk zoologisk tidsskrlftsentral (NZT) er et felles Managing Editor (Administrerende redaktor) publiseringsorgan for NEF og NOF i samarbeid med Edvard K. Barth, Zoologisk museum, Sars g1. I, de zoologiske avdelingene ved universitetsmuseene i Oslo 5. Oslo, Bergen, Trondheim og Troms0. Adresse: Zoologisk museum, Sarsgt. I, Oslo 5. Editorial Board (Redaksjonsrid) Postgiro 2 3483 65. Svein Haftorn, Trondheim, Wim Vader, Troms0, Rolf Vik, Oslo. Kristiansen & W0ien, Oslo. ISSN 0332-7698 Fauna (Norsk Zoologisk Forening) har fra na gatt ut av Norsk Zoologisk Tidsskriftsentral. Avtalen om gjen sidig reduserte abonnementspriser pi foreningenes tidsskrifter vii for fremtiden derfor bare gjelde mellom Norsk Entomologisk Forening og Norsk Ornitologisk Forening. Distribution and Ecology of Norwegian Water-bugs (lIenno,lIeteroptera) JOHN THOMAS JASTREY Jastrey, J.T. 1981. Distribution and ecology of Norwegian Water-bugs (Hem., Heteroptera). Fauna norI'. Ser. B. 28, 1-24. Field work in southern Norway in 1977 -1979 yielded 36 species of Water-bugs, one of which had not previously been recorded from Norway (Sigara scotti (Fieber, 1868». The number of reported species from Norway is now 44. Information on distribution, and habi tat preferences is given for each species. Most species can be considered widely distributed in southern Norway. Distributional maps are also included. John Thomas Jastrey, Sagvoll folkeh0gskole N-3810 Gvarv, Norway. INTRODUCTION In all, 208 localities were investigated, 178 of Apart from the work of Warloe (1924), little in these contained one or more species of Water formation exists on the biogeographical status of bugs. The material consists of 36 species and the Water-bugs (consisting of the families Meso 5551 individuals. The nomenclature follows velidae, Hebridae, Hydrometridae, Veliidae, Kloet & Hincks (1964). Gerridae, Nepidae, Aphelocheiridae, Notonecti The different locations are classified into habi dae and Corixidae) found in Norway. This paper tat-types, in all 14. Information on this is to be is meant to clarify this situation, and includes a found in Appendix I. Here is also listed data list of all species recorded from Norway plus about: the geographical site of each location fol some that have had an uncertain status. Also, lowing Strand (1943) and the UTM-method as there is included information on the ecology of described by I2lkland (1977), date of collection • each species, especially on habitat preferences. and altitude. Identification keys used for adults are found MATERIAL AND METHODS in Stichel (1956), Poisson (1957), Soos (1960, Macan (1976) and for the tarvae Mitis (1937), The collection of the material was done in the Poisson (1957), Brinkhurst (I 959c) and Jansson years 1977 -1979, and was concentrated (1969). mostly in the Jceren and Bergen districts. Howe In addition to own collected material, some \ ver, a field trip was completed during the sum material was borrowed from the Museum of mer of 1978, in which southern Norway north Zoology, University of Oslo. to Trondheim was visited. The collections are preserved at the Museum On most of the locations, only one site has of Zoology, University of Bergen. been subject to sampling. This seems to be ade quate for getting a picture of the constellation of Water-bugs at that location, except in some lar SYNOPSIS OF THE SPECIES ger lakes where the variation can be larger, due The first information on Norwegian Water-bugs to greater variation of the habitat. is from the early 18th century, written by Zet The sampling was done with the aid of a terstedt (1828, 1838) and Fallen (1829). Siebke pond net, 40 cm in diameter, with a mesh width (I 874) was the first to compile all available in of 1.0 mm. This was attached to a shaft of 1.5 m formation pertaining to Norwegian insects, and lenght, which could be extended when required. he lists a total of 18 Water-bugs from 4 families. No form of quantitative sampling has been at Sch0yen (I879) and Sahlberg (I 880) contributed tempted, other than sampling over a time period to the knowledge on the distribution of some of approximately 30 minutes at each site. Collec species. In several publications from ting was mostly concentrated on areas on the 1880-1884, Reuter described the distribution shoreline with some vegetation. Few species are of Scandinavian insects. In 1889, Sch0yen ad generally found outside this area. ded some more species to Siebke's list, and at Fauna norv. Ser. B 28 .. \ - 24. Oslo 1981. this time 27 species from 6 families were known Hehrus ruficeps (Thomson, 187 I). from Norway. Strand (1899 a,b, 1902, 1905, First listed for Norway by Strand (1912) and War 1912) and Schneider (190 I) made their additions loe (] 924). Widely distributed in southern Scandi to this list, and in 1912, 31 species had been navia and Finland. Found in most of Europe. published. Usually found in wet moss (Sphagnum spp.) The last publication giving a complete picture in swamps (Warloe, 1924; Macan, 1976. of the distribution of Norwegian Water-bugs is Wesenberg-Lund (1943) writes that it can be by Warloe (1924). Here are listed 41 species. In found on floating leaves such as Nymphaea 1976, Coulianos & Ossiannilsson listed Norwe sp. gian Water-bugs in their catalogue, and this list includes 43 species. Little work has been accomplished in later Hydrometridae years by Norwegian scientists on this group of Hydrometra gracilenta Horvath, 1899. insects. 0kland (1964, 1977) has published in Only one Norwegian record by Warloe (] 924). formation on Nepidae. Small notes on the Co Found in southern Sweden, also in Finland and rixidae and Notonectidae were published by Denmark. Distributed in most of Europe and also Dolmen & Aagaard (1973), Dolmen & Olsvik Ethiopia (Poisson, 1957). (1977) and Dolmen (1977). One new species of Hydrometra stagnorum (L. 1758). Corixidae is added in the following list. The total Found in 5 localities (11, 118, [50, 154). and K0r amount of Norwegian Water-bugs is now rilen, Sotra, HOy: Fjell (1 d, 2 Q Q, 6 July 1977; known to be 44 species. All of these are listed, Leg. B. Meidelll. Other Norwegian records by and also some with previously uncertain status. Strand (I905) and Warloe (] 924). In Sweden, \ more south-western than H. grljcilellla. also fo For each species is given the locality numbers und in Finland and Denmark. Found throughout where it was found in the study. Also, the gene Europe and northern Africa and Central Asia. ral distribution and notes on ecology are listed. Macan (1976) describes the habitat preferen The notes on distribution are based on: for Scan ces of the species as emergent vegetation in dinavia VepsaIiiinen (1973) and Coulianos & Os still and flowing waters. Though the vegeta siannilsson (1976), for Europe and World Nie tion in the listed localities is sparse, the spe- • ser (1978). cies was always found in secluded areas in shallow water. Mesovelldae Mesoveliafurcata Mulsant & Rey, 1852. Veliidae Found in 1I localities (74, 82, 93, 94, 103, 111, 115, 128, 136, 171, 178). Previously recorded by Velia caprai Tamanini, 1947. War/oe (] 924). Found from Stavanger to Hed Found in 2 localities (I 9, 33).