Bidessini

Liodessus affinis, photographed by Stephen Luk.

Belongs within: Hydroporinae.
Contains: Guignotus, Tjirtudessus.

The Bidessini is a clade of water beetles in which females of most members (except the basalmost Hydrodessus) possess a strongly sclerotised, stout spine within the spermatheca. Hydrodessus shares with other bidessins fusion of the metacoxae and abdominal sternite 2. A clade excluding Hydrodessus and Amarodytes (previously treated as the Bidessini sensu stricto) is further supported by the presence of bi-segmented lateral lobes on the male genitalia (Miller 2001). Hydrodessus is a Neotropical genus characterised by a lack of basal pronotal striae or of prominent carinae on the elytra. The genus Limbodessus, found in Australia and New Guinea, includes a radiation of stygobiotic beetles in Western Australia (Watts & McRae 2013).

<==Bidessini
    |--Hydrodessus M01
    `--+--Amarodytes Régimbart 1900 M01, LM87
       `--+--Hydroglyphus japonicus M01
          |--Limbodessus Guignot 1939 M01, WM13
          |    |--*L. compactus (Clark 1862) [=Hydroporus compactus] WM13
          |    |--L. bennetti Watts & McRae 2013 WM13
          |    |--L. cunyuensis WM13
          |    |--L. narryerensis WM13
          |    `--L. neoguineensis (Régimbart 1892) [=Bidessus neoguineensis] LM87
          |--+--Allodessus Guignot 1953 M01, LM87
          |  |    `--*A. bistrigatus (Clark 1862) (see below for synonymy) LM87
          |  |--Uvarus Guignot 1939 M01, LM87
          |  |    |--*U. lacustris (Say 1823) [=Hydroporus lacustrus, Amarodytes (*Uvarus) lacustris] LM87
          |  |    |--U. chappuisi (Peschet 1932) S86
          |  |    |--U. granarius RL01
          |  |    `--U. pictipes (Lea 1899) [=Bidessus pictipes] LM87
          |  `--Bidessodes Régimbart 1900 M01, LM87
          |       |--*B. semistriatus Régimbart 1900 LM87
          |       |--B. bilita Watts 1978 LM87
          |       |--B. denticulatus (Sharp 1882) [=Bidessus denticulatus] LM87
          |       |--B. flavosignatus (Zimmermann 1922) [=Bidessus flavosignatus] LM87
          |       |--B. grossus (Zimmermann 1922) [=Bidessus grossus] LM87
          |       |--B. gutteridgei Watts & Humphreys 2003 BW04
          |       |--B. jucundus M01
          |       |--B. limestoneensis Watts & Humphreys 2003 BW04
          |       `--B. mjobergi (Zimmermann 19220 [=Bidessus mjobergi] LM87
          `--+--Bidessonotus Régimbart 1895 M01, LM87
             |    `--B. obtusatus M01
             |--+--Neoclypeodytes Young 1967 M01, RL01
             |  |    |--N. cinctellus M01
             |  |    `--N. leachi M01
             |  `--+--Brachyvatus Zimmermann 1919 M01, RL01
             |     |    |--B. acuminatus M01
             |     |    `--B. apicatus RL01
             |     `--Hemibidessus M01
             |          |--H. bifasciatus M01
             |          |--H. celinoides M01
             |          |--H. conicus M01
             |          |--H. plaumanni M01
             |          `--H. spiroductus M01
             `--+--Anodocheilus Babington 1841 M01, RL01 [incl. Anodontochilus Régimbart 1895 RL01]
                |    |--A. exiguus RL01
                |    |--A. francescae RL01
                |    `--A. maculatus M01
                `--Liodessus Guignot 1939 M01, LM87
                     |--*L. affinis (Say 1823) [=Hydroporus affinis, Bidessonotus (*Liodessus) affinis] LM87
                     |--L. amabilis (Clark 1862) [=Hydroporus amabilis] LM87
                     |--L. antrias Guignot 1955 S86
                     |--L. dispar (Sharp 1882) [=Bidessus dispar; incl. B. elegans Lea 1899] LM87
                     |--L. gemellus (Clark 1862) [=Hydroporus gemellus; incl. Bidessus mundus Sharp 1882] LM87
                     |--L. inornatus (Sharp 1882) [=Bidessus inornatus; incl. B. biformis Sharp 1882] LM87
                     |--L. obscurellus M01
                     |--L. praelargus (Lea 1899) [=Bidessus praelargus] LM87
                     `--L. shuckardii (Clark 1862) [=Hydroporus shuckardii] LM87

Bidessini incertae sedis:
  Crinodessus Miller 1997 BW04
    `--C. amyae Miller 1997 BW04
  Phreatodessus Ordish 1976 S86
    |--P. hades Ordish 1976 S86
    `--P. pluto Ordish 1991 BW04
  Kuschelydrus Ordish 1976 S86
    `--K. phraeticus Ordish 1976 BW04
  Trogloguignotus Sanfilippo 1958 S86
    `--T. concii Sanfilippo 1958 S86
  Bidessus B14
    |--B. acuminatus R89
    |--B. affinis R89
    |--B. borrei R89
    |--B. ovoideus Régimbart 1895 B14
    |--B. seydeli B14
    |--B. sharpi B14
    `--B. unistriatus B14
  Clypeodytes Régimbart 1894 LM87
    |--*C. cribrosus (Schaum 1864) [=Hydroporus cribrosus] LM87
    |--C. bifasciatus (Zimmermann 1922) [=Bidessus (Clypeodytes) bifasciatus] LM87
    |--C. darlingtoni Watts 1978 LM87
    `--C. migrator (Sharp 1882) [=Bidessus migrator] LM87
  Guignotus LM87
  Gibbidessus Watts 1978 LM87
    `--*G. chipi Watts 1978 LM87
  Terradessus Watts 1982 LM87
    `--*T. caecus Watts 1982 LM87
  Tjirtudessus BW04
  Comaldessus Spangler & Barr 1995 BW04
    `--*C. stygius Spangler & Barr 1995 NR97
  Sinodytes Spangler 1996 BW04
    `--S. hubbardi Spangler 1996 BW04
  Glareadessus Wewalka & Biström 1998 BW04
    |--G. franzi Wewalka & Biström 1998 BW04
    `--G. stocki Wewalka & Biström 1998 BW04
  Neobidessus Young 1967 RL01
    |--N. pulloides RL01
    `--N. pullus RL01
  Boongurrus Larsson 1994 NR97
    `--*B. rivulus Larsson 1994 NR97

*Allodessus bistrigatus (Clark 1862) [=Hydroporus bistrigatus, Bidessus bistrigatus; incl. B. granularis Balfour-Browne 1944, Hydroporus luridus Macleay 1871, B. luridus, B. pallidus Lea 1899] LM87

*Type species of generic name indicated

REFERENCES

[BW04] Balke, M., C. H. S. Watts, S. J. B. Cooper, W. F. Humphreys & A. P. Vogler. 2004. A highly modified stygobiont diving beetle of the genus Copelatus (Coleoptera, Dytiscidae): taxonomy and cladistic analysis based on mitochondrial DNA sequences. Systematic Entomology 29: 59–67.

[B14] Bouchard, P. (ed.) 2014. The Book of Beetles: A lifesize guide to six hundred of nature's gems. Ivy Press: Lewes (United Kingdom).

[LM87] Lawrence, J. F., B. P. Moore, J. E. Pyke & T. A. Weir. 1987. Zoological Catalogue of Australia vol. 4. Coleoptera: Archostemata, Myxophaga and Adephaga. Australian Government Publishing Service: Canberra.

[M01] Miller, K. B. 2001. On the phylogeny of the Dytiscidae (Insecta: Coleoptera) with emphasis on the morphology of the female reproductive system. Insect Systematics and Evolution 32: 45–92.

[NR97] Nilsson, A. N., & R. E. Roughley. 1997. The genus- and family-group names of the Dytiscidae—additions and corrections. Beiträge zur Entomologie 47 (2): 359–364.

[R89] Régimbart, M. 1889. Enumération des Haliplidae, Dytiscidae et Gyrinidae recueillis par M.^r le Prof. L. Balzan dans l’Amérique méridionale et description de quelques autres espèces voisines. Annali del Museo Civico di Storia Naturale di Genova, Serie 2^a, 7: 256–268.

[RL01] Roughley, R. E., & D. J. Larson. 2001. Dytiscidae Leach, 1815. In: Arnett, R. H., Jr & M. C. Thomas (eds) American Beetles vol. 1. Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia pp. 156–186. CRC Press: Boca Raton.

[S86] Spangler, P. J. 1986. Insecta: Coleoptera. In: Botosaneanu, L. (ed.) Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) pp. 622–631. E. J. Brill/Dr W. Backhuys: Leiden.

[WM13] Watts, C. H. S., & J. McRae. 2013. Limbodessus bennetti sp. nov., the first stygobitic Dytiscidae (Coleoptera) from the Pilbara region of Western Australia. Records of the Western Australian Museum 28 (2): 141–143.

Last updated: 26 October 2018.