Published December 31, 2017 | Version v1

Carabdytes Balke, Hendrich & Wewalka 1992

Description

Carabdytes Balke, Hendrich & Wewalka, 1992

Carabdytes Balke, Hendrich & Wewalka, 1992: 94; type species: Carabdytes upin Balke, Hendrich & Wewalka, 1992 by original designation.

Diagnosis. Medium sized to large (10–16 mm) species. Medial labral emargination deep. Sides of pronotum mostly broadly and distinctly bordered; posterior pronotal angles weakly obtuse. Elytral reticulation usually simple, consisting of fine isodiametric cells but without larger polygonal meshes; double elytral reticulation developed in the New Caledonian C. alutaceus (Fauvel, 1883) n. comb.; in C. guadalcanalensis (Balke, 1998) n. comb. reticulation composed of large polygonal meshes. Setae on parameres apically acute, not modified to trumpet-shaped “suction” setae (Balke 1990).

Position. Sister group of Meridiorhantus n. gen. as described below (Fig. 1).

Species composition. Altogether 10 species occurring on Pacific Islands one of which has two subspecies:

Carabdytes alutaceus (Fauvel, 1883) n. comb., New Caledonia.

Carabdytes guadalcanalensis (Balke, 1998) n. comb., Solomon Islands: Guadalcanal (Fig. 2 B).

Carabdytes monteithi (Balke, Wewalka, Alarie & Ribera, 2007) n. comb., New Caledonia.

Carabdytes novaecaledoniae (J. Balfour-Browne, 1944) n. comb., New Caledonia (Fig. 2 C).

Carabdytes oceanicus (Balke, 1993b) n. comb., Hawaii.

Carabdytes pacificus (Boisduval, 1835) n. comb., Hawaii.

Notes: This species and the former were not included in Morinière et al. (2016). They are morphologically however very similar to C. pseudopacificus (Balke 1993b) which leads us to conclude that they belong to this clade as well.

Carabdytes plantaris (Sharp, 1882) n. comb., New Zealand (Fig. 2 D).

Notes: This species was not included in Moriniere et al. (2016). Subsequently we obtained DNA sequence data of one specimen and placed it in this clade (M. Balke et al., unpublished data).

Carabdytes poellerbauerae (Balke, Wewalka, Alarie & Ribera, 2007) n. comb., New Caledonia.

Carabdytes pseudopacificus (Balke, 1993b) n. comb., Hawaii.

Carabdytes upin Balke, Hendrich & Wewalka, 1992

C. upin tindige Skale, Tänzler, Hendrich & Balke, 2012, Indonesia: West Papua. C. upin upin Balke, Hendrich & Wewalka, 1992, Indonesia: Papua; Papua New Guinea (Fig. 3A).

Notes

Published as part of Balke, Michael, Hájek, Jiří & Hendrich, Lars, 2017, Generic reclassification of species formerly included in Rhantus Dejean (Coleoptera, Dytiscidae, Colymbetinae), pp. 91-100 in Zootaxa 4258 (1) on page 93, DOI: 10.11646/zootaxa.4258.1.7, http://zenodo.org/record/569186

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Linked records

Additional details

Biodiversity

Scientific name authorship
Balke, Hendrich & Wewalka
Kingdom
Animalia
Phylum
Arthropoda
Order
Coleoptera
Family
Dytiscidae
Genus
Carabdytes
Taxon rank
genus
Taxonomic concept label
Carabdytes Balke, 1992 sec. Balke, Hájek & Hendrich, 2017

References

  • Balke, M., Hendrich, L. & Wewalka, G. (1992) Carabdytes upin gen. n., sp. n. aus Neuguinea (Coleoptera: Dytiscidae). Entomologische Zeitschrift, 102 (6), 93 - 100.
  • Balke, M. (1998) Updating the Pacific, Indomalayan and Neotropical Rhantus - fauna (Coleoptera: Dytiscidae). Koleopterologische Rundschau, 68, 71 - 79.
  • Balke, M. (1990) Die Gattung Rhantus Dejean. IV. Taxonomie und Faunistik verschiedener palaarktischer und nearktischer Spezies (Coleoptera: Dytiscidae). Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 63, 195 - 208.
  • Balke, M., Wewalka, G., Alarie, Y. & Ribera, I. (2007) Molecular phylogeny of Pacific island Colymbetinae: radiation of New Caledonian and Fijian species (Coleoptera, Dytiscidae). Zoologica Scripta, 36, 173 - 200. https: // doi. org / 10.1111 / j. 1463 - 6409.2006.00265. x
  • Balke, M. (1993 b) Taxonomische Revision der pazifischen, australischen und indonesischen Arten der Gattung Rhantus Dejean, 1833 (Coleoptera: Dytiscidae). Koleopterologische Rundschau, 63, 39 - 84.
  • Moriniere, J., Van Dam, M. H., Hawlitschek, O., Bergsten, J., Michat, M. C., Hendrich, L., Ribera, I., Toussaint, E. F. A. & Balke, M. (2016) Phylogenetic niche conservatism explains an inverse latitudinal diversity gradient in freshwater arthropods. Scientific Reports, 6, 26340.