Published July 26, 2022 | Version v1
Taxonomic treatment Open

Cephalcia arvensis Panzer 1802

  • 1. Senckenberg Deutsches Entomologisches Institut, Eberswalder Str. 90, 15374 Muencheberg, Germany
  • 2. Ecology and Genetics Research Unit, PO Box 3000, 90014 University of Oulu, Oulu, Finland
  • 3. Estonian Naturalists' Society, Struve 2, Tartu 51003, Estonia
  • 4. Alkutie 41 E, 00660 Helsinki, Finland
  • 5. Liinalammintie 11 as. 6, 14200 Turenki, Finland
  • 6. Department of Environmental and Biological Sciences, University of Eastern Finland, 80101 Joensuu, Finland
  • 7. Senckenberg Deutsches Entomologisches Institut, Eberswalder Str. 90, 15374 Muencheberg, Germany & Ecology and Genetics Research Unit, PO Box 3000, 90014 University of Oulu, Oulu, Finland & Department of Zoology, Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia

Description

Cephalcia arvensis Panzer, 1802

Fig. 6

Cephalcia arvensis Panzer, 1802: vol. 86 pl. 9. ♀. Syntypes. Type locality: Germany [according to title of work]. Blank et al. (2009); Nomen protectum with respect to Psen lucorum Schrank, 1802, nomen oblitum.

Cephalcia abietis var. intermedia Hellén, 1948: 40-41. ♀. Syntypes. Type locality: Russia, Karelia, Paanajärvi.

Cephalcia intermedia: Vikberg (1982); raised to species rank. Van Achterberg and van Aartsen (1986); synonymy with C. lariciphila (Wachtl, 1898). syn. nov.

Notes.

Cephalcia intermedia has in recent years mostly been understood as a distinct species close to C. arvensis (e.g. Viitasaari 2002b, Taeger et al. 2006), but with more extensively dark-patterned adults, occurring in northern Europe and the central European mountains. Because of its dark coloration, specimens of C. intermedia can also be mixed up with C. lariciphila (Wachtl, 1898), but the host plant of C. intermedia is Picea, as in C. arvensis, not Larix as in C. lariciphila. The status of C. intermedia and the supposed differences to C. arvensis were discussed by Vikberg (1982), Shinohara (1985), Midtgaard (1987) and Viitasaari (2002b). The only differences between C. arvensis and C. intermedia are in coloration: mainly of the abdomen, and less so of the antennae and legs. Shinohara (1985) pointed out that an unbroken range of color variability occurs between pale C. arvensis and the dark specimens identified as C. intermedia. This is in accordance with our observations, as the amount of dark color on the male abdomen varies considerably even in a single locality (Fig. 6). Small differences in colouration of larvae are possibly not constant, as the larvae of C. intermedia used for comparison were offspring of a single female. At present, there seems to be no convincing evidence for treating C. intermedia as a species distinct from C. arvensis, and we therefore synonymize them.

Notes

Published as part of Liston, Andrew, Mutanen, Marko, Heidemaa, Mikk, Blank, Stephan M., Kiljunen, Niina, Taeger, Andreas, Viitasaari, Matti, Vikberg, Veli, Wutke, Saskia & Prous, Marko, 2022, Taxonomy and nomenclature of some Fennoscandian Sawflies, with descriptions of two new species (Hymenoptera, Symphyta), pp. 151-218 in Deutsche Entomologische Zeitschrift 69 (2) on page 151, DOI: 10.3897/dez.69.84080

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References

  • Blank, SM, Taeger, A, Liston, AD, Smith, DR, Rasnitsyn, AP, Shinohara, A, Heidemaa, M, Viitasaari, M, 2009. Studies toward a World Catalog of Symphyta (Hymenoptera). Zootaxa 2254 (1): 1 - 96, DOI: https://doi.org/10.11646/zootaxa.2254.1.1
  • Vikberg, V, 1982. Notes on the taxonomy and the nomenclature of some mainly Fennoscandian sawflies (Hymenoptera, Symphyta). Notulae Entomologicae 62 (2): 61 - 65
  • van Achterberg, C, van Aartsen, B, 1986. The European Pamphiliidae (Hymenoptera: Symphyta), with special reference to the Netherlands. Zooelogische Verhandelingen 234: 1 - 98
  • Viitasaari, M, 2002b. The Northern European taxa of Pamphiliidae (Hymenoptera). In: Viitasaari, M, Ed., Sawflies (Hymenoptera, Symphyta) I. A review of the suborder, the Western Palaearctic taxa of Xyeloidea and Pamphilioidea. Tremex, Helsinki: 235 - 358
  • Taeger, A, Blank, SM, Liston, AD, 2006. European Sawflies (Hymenoptera: Symphyta) - A Species Checklist for the Countries. In: Blank, SM, Schmidt, S, Taeger, A, Eds., Recent Sawfly Research: Synthesis and Prospects. Goecke and Evers, Keltern: 399 - 504
  • Shinohara, A, 1985. Some records of European Pamphiliidae (Hymenoptera). Entomologist's Gazette 36 (2): 161 - 164
  • Midtgaard, F, 1987. The Norwegian Xyelidae and Pamphiliidae (Hymenoptera). Fauna Norvegica, Ser. B: Norwegian Journal of Entomology 34 (2): 125 - 130