Diplocephalus

Diplocephalus cristatus, from Pavouci.

Belongs within: Linyphiidae.

Diplocephalus is a Holarctic genus of small spiders with the anterior part of the male carapace drawn out into a pair of prominences. The majority of species are found in the Palaearctic region, with D. subrostratus also found in North America whereas D. cristatus has been introduced to North America and New Zealand.

Characters (from here): Margin of carapace without teeth. Tibial spination 2-2-1-1, tibia I without ventral spines; dorsal spines on metatarsus I at more than 0.4× but less than 0.8× total length from proximal end, metatarsus I without trichobothrium. Male carapace with cephalic pits; palpal tibia with long curved apical apophysis.

<==Diplocephalus Bertkau in Förster & Bertkau 1883PVD10
    |--D. barbatus (Koch 1879)MKD01
    |--D. connatus Bertkau 1889BH02
    |--D. crassiceps (Westr. 1861)S06
    |--D. cristatus (Blackwall 1833)PVD10
    |--D. cuneatusJVHN90
    |--D. dentatus Tullgren 1955RKD02
    |--D. frontatus (Blackw. 1833)S06
    |--D. latifrons (P.-Cambridge 1863)MKD01
    |--D. marusiki Eskov 1988MKD01
    |--D. montanus Eskov 1988MKD01
    |--D. permixtus (Pickard-Cambridge 1871)PG08
    |--D. picinus (Blackwall 1841)BBM02
    |--D. protuberans (Pickard-Cambridge 1875)PO08
    `--D. subrostratus (P.-Cambridge 1873)MKD01

*Type species of generic name indicated

References

[BH02] Bell, J. R., A. J. Haughton, N. D. Boatman & A. Wilcox. 2002. Do incremental increases of the herbicide glyphosate have indirect consequences for spider communities? Journal of Arachnology 30 (2): 288–297.

[BBM02] Bonte, D., L. Baert & J.-P. Maelfait. 2002. Spider assemblage structure and stability in a heterogeneous coastal dune system (Belgium). Journal of Arachnology 30 (2): 331–343.

[JVHN90] Jennings, D. T., W. M. Vander Haegen & A. M. Narahara. 1990. A sampling of forest-floor spiders (Araneae) by expellant, Moosehorn National Wildlife Refuge, Maine. Journal of Arachnology 18: 173–180.

[MKD01] Marusik, Y. M., S. Koponen & S. N. Danilov. 2001. Taxonomic and faunistic notes on linyphiids of Transbaikalia and South Siberia (Araneae, Linyphiidae). Bulletin of the British Arachnological Society 12 (2): 83–92.

[PVD10] Paquin, P., C. J. Vink & N. Dupérré. 2010. Spiders of New Zealand: annotated family key and species list. Manaaki Whenua Press: Lincoln (New Zealand).

[PG08] Pétillon, J., & A. Garbutt. 2008. Success of managed realignment for the restoration of salt-marsh biodiversity: preliminary results on ground-active spiders. Journal of Arachnology 36 (2): 388–393.

[PO08] Pluess, T., I. Opatovsky, E. Gavish-Regev, Y. Lubin & M. H. Schmidt. 2008. Spiders in wheat fields and semi-desert in the Negev (Israel). Journal of Arachnology 36 (2): 368–373.

[RKD02] Relys, V., S. Koponen & D. Dapkus. 2002. Annual differences and species turnover in peat bog spider communities. Journal of Arachnology 30 (2): 416–424.

[S06] Strand, E. 1906. Die arktischen Araneae, Opiliones und Chernetes. In: Römer, F., & F. Schaudinn (eds) Fauna Arctica. Eine Zusammenstellun der arktischen Tierformen, mit besonder Berücksichtigung des Spitzbergen-Gebietes auf Grund der Ergebnisse der Deutschen Expedition in das Nördliche Eismeer im Jahre 1898 vol. 4 pp. 431–478. Gustav Fischer: Jena.

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