Serie B 1994 Vo!. 41 No. 2 Norwegian Journal of Entomology Publi hed by Foundation for Nature Research and Cultural Heritage Research Trondheim Fauna norvegica Ser. B Organ for Norsk Entomologisk Forening Appears with one volume (two issues) annually. applied (e.g. conservation) ecology, morphology, Utkommer med to hefter pr. ar. behaviour, zoogeography as well as methodological Editor in chief (Ansvarlig redakt0r) development. All papers in Fauna norvegica are reviewed by at least two referees. Dr. John O. Solem, University of Trondheim, The Museum, N-7004 Trondheim. FAUNA NORVEGICA Ser. B publishes original new Editorial committee (Redaksjonskomite) information generally relevant to Norwegian entomol­ ogy. The journal emphasizes papers which are mainly Arne C. Nilssen, Department of Zoology, TromslZl faunal or zoogeographical in scope or content, includ­ Museum, N-9006 TromslZl, Ole A. 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FAUNA NORVEGICA er et felles pub­ Managing Editor (Administrerende redaktlZlr) liseringsorgan for NEF og NOF i sarnar­ Or. Kjetil Bevanger, Foundation for Nature Research beid med de naturhistoriske museer og and Cultural Heritage Research (NINA·NIKU), Stiftelsen for naturforskning og kultur­ Tungasletta 2, N-7005 Trondheim. ~ minneforskning (NINA-NlKU). Editorial Board (Redaksjonsrad) Kjetil Bevanger, Svein Haftorn, Thrine Heggberget, ~ Adresse: John O. Solem, Trondheim. NINA·NIKU, Tungasletta 2, NINA· NIKU 7005 Trondheim Falk-Larssen Trykkpartner AS ISSN 0332-7698 --------------------------Fauna norv. Ser. B 41: 49-52.1994 Synneuridae and Pachyneuridae · one new and one poorly known family of Diptera in Norway (Diptera, Nematocera) Geir E. E. S01i, Uta Greve and Bj0rn 0kland. S0li, G. E. E., Greve, L. & 0kland, B. Synneuridae and Pachyneuridae - one new and one poorly known family of Diptera in Norway (Diptera, Nematocera). Fauna Norv. Ser. B. 41: 49-52. The family Synneuridae is reported for the first time from Norway. One male of Synneuron annulipes (Lundstrom, 1910) was collected in a window trap, operated in Akershus, SE Norway in 1991. This evidently rare species has previously been recorded from Sweden, Finland and Russia. The family Pachyneuridae, represented by Pachyneura fasciata Zetterstedt, 1838, has previously been recorded once from Norway. One male of this rare species was collected by window trapping in Akershus, SE Norway in 1991. An additional Norwegian specimen, a female, collected in Hedmark, E Norway in 1967, is kept in the col­ lection of the Zoological Museum, Bergen. Less than 30 specimens have been recorded from Europe (Finland, Sweden, Poland and Russia), and most records are more than 50 years old. Both species have larvae living in decaying wood, and seem to have an affinity to old virgin forests. Due to their rarity, both species must be considered vulnerable and should be inclu­ ded in a Norwegian Red List. Geir E. E. S0li & Lita Greve, Zoological Museum, University of Bergen, Museplass 3, N­ 5007 Bergen, Norway. Bj0m 0kland, Norwegian Forest Research Institute, H0gskoleveien 12, N-1432 As, Norway Introduction The terminology in the descriptions follows McAlpine (1981). The present paper presents the first record of the family Synneuridae and two new records of the family Pacmyneuridae from Norway. The fami­ Family Synneuridae lies were represented with one male each in an extensive material collected in a spruce forest in Two genera are included in this family, 0stmarka, 15 km east of Oslo in 1991. The for­ Synneuron Lundstrom, 1910 and Exiliscelis est covers an area of approximately 24 km2. 840 Hutson, 1977, with three and one species, traps were operating at 70 sites, each site repre­ respectively. Of these, S. decipiens Hutson, senting forest with different influence of cultiva­ 1977 and Exiliscelis califomiensis Hutson, 1977 tion. Both window, Malaise and emergence are both Nearctic, while S. annulipes traps were used. Protection of threathened and (Lundstrom, 1910) and S. silvestre Mamaev & vulnerable invertebrates is a primary goal of this Krivosheina, 1969 are Palaearctic (Hutson 1977, ongoing research project, which is a part of the Peterson & Cook 1981). S. annulipes is the only research programme "Forest ecology and multi­ species recorded from Scandinavia. A key to the ple use". For the time being only a small frac­ European species of Synneuron is given by tion of the total material has been identified to Hutson (1977). species. In addition, one female of Pachyneuridae was kept in the collection of the The family demonstrates several primitive char­ Zoological Museum, Bergen. acters, and is considered a relict group of 49 Fauna norv. 5er. B 41: 49-52.1994 ------------------------------------­ Diptera (SODS 1986). Little is known about the life history and habits, but larvae have been found in moist, decaying wood permeated by mycelia (Peterson & Cook 1981, SODS 1986). Aspen (Populus) and spruce (Picea abies) are mentioned as possible hosts (Hutson 1977). -----lmm Synneuron annulipes is a small fly with a scatop­ sid-like appearance. The species has three ocelli and short compressed antennae, flagellum with 12 flagellomeres. The compound eyes meet above the antennae, and are narrowly separated .,,",/~':)ti~";;'~'" below. Labial palpi 4-segmented. Wing length ~," about 3 mm (Fig. lA). Membrane covered by B 2~ minute microtrichia and well developed setae. Anterior veins heavily pigmented, posterior veins Fig. 1 pale. Sc reduced. RI and R4+5 fused for a short distance before either reach costa. M and M Wing venation in A) Synneuron annulipes I 2 (Lundstrom, 1910) and B) Pachyneura fasciata both distinct, but the basal portion of M2 missing. (Zetterstedt, 1838). New record: AK: Rrelingen, Bl&tjern (EIS:29) 10' 24 June Utsjoki and Le: Malla. Outside Fennoscandia, 1991, B. 0kland. The locality is situated in an the species is recorded with certainty from the old, semi-natural spruce forest, today a natural Moscow region and from Kantalaks in the reserve (see Korsmo, Moe & Svalastog 1991). Murmansk region, both Russia (Hutson 1977). The body length, about 3 mm, and the genitalia, fit well with the description given by Hutson Family Pachyneuridae (1977). The other Palaearctic species, S. silves­ tre, recorded from the Tula region in Russia, is Pachyneuridae is another small family of about twice as large as S. annulipes, but in other Diptera, represented with a single genus and two respects very similar to this species. Hutson, species, Pachyneura fasciata Zetterstedt, 1838 who did not examine any specimens of S. silves­ and P. oculata Krivosheina & Mamaev, 1972. tre, simply refers to Mamaev and Krivosheina's Three other genera, all monotypic, usually