Belongs within: Hydroporinae.
Contains: Bidessus, 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 |--HydrodessusM01 `--+--Amarodytes Régimbart 1900M01, LM87 `--+--HydroglyphusM01 | |--H. flammulatusBP00 | |--H. geminusVB21 | |--H. japonicusM01 | |--H. pusillusBP00 | `--H. signatellusBP00 |--Limbodessus Guignot 1939M01, WM13 | |--*L. compactus (Clark 1862) [=Hydroporus compactus]WM13 | |--L. bennetti Watts & McRae 2013WM13 | |--L. cunyuensisWM13 | |--L. narryerensisWM13 | `--L. neoguineensis (Régimbart 1892) [=Bidessus neoguineensis]LM87 |--+--Allodessus Guignot 1953M01, LM87 | | `--*A. bistrigatus (Clark 1862) (see below for synonymy)LM87 | |--Uvarus Guignot 1939M01, LM87 | | |--*U. lacustris (Say 1823) [=Hydroporus lacustrus, Amarodytes (*Uvarus) lacustris]LM87 | | |--U. chappuisi (Peschet 1932)S86 | | |--U. granariusRL01 | | `--U. pictipes (Lea 1899) [=Bidessus pictipes]LM87 | `--Bidessodes Régimbart 1900M01, LM87 | |--*B. semistriatus Régimbart 1900LM87 | |--B. bilita Watts 1978LM87 | |--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 2003BW04 | |--B. jucundusM01 | |--B. limestoneensis Watts & Humphreys 2003BW04 | `--B. mjobergi (Zimmermann 19220 [=Bidessus mjobergi]LM87 `--+--Bidessonotus Régimbart 1895M01, LM87 | `--B. obtusatusM01 |--+--Neoclypeodytes Young 1967M01, RL01 | | |--N. cinctellusM01 | | `--N. leachiM01 | `--+--Brachyvatus Zimmermann 1919M01, RL01 | | |--B. acuminatusM01 | | `--B. apicatusRL01 | `--HemibidessusM01 | |--H. bifasciatusM01 | |--H. celinoidesM01 | |--H. conicusM01 | |--H. plaumanniM01 | `--H. spiroductusM01 `--+--Anodocheilus Babington 1841M01, RL01 [incl. Anodontochilus Régimbart 1895RL01] | |--A. exiguusRL01 | |--A. francescaeRL01 | `--A. maculatusM01 `--Liodessus Guignot 1939M01, LM87 |--*L. affinis (Say 1823) [=Hydroporus affinis, Bidessonotus (*Liodessus) affinis]LM87 |--L. amabilis (Clark 1862) [=Hydroporus amabilis]LM87 |--L. antrias Guignot 1955S86 |--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. obscurellusM01 |--L. praelargus (Lea 1899) [=Bidessus praelargus]LM87 `--L. shuckardii (Clark 1862) [=Hydroporus shuckardii]LM87 Bidessini incertae sedis: Crinodessus Miller 1997BW04 `--C. amyae Miller 1997BW04 Phreatodessus Ordish 1976S86 |--P. hades Ordish 1976S86 `--P. pluto Ordish 1991BW04 Kuschelydrus Ordish 1976S86 `--K. phraeticus Ordish 1976BW04 Trogloguignotus Sanfilippo 1958S86 `--T. concii Sanfilippo 1958S86 BidessusB14 Clypeodytes Régimbart 1894LM87 |--*C. cribrosus (Schaum 1864) [=Hydroporus cribrosus]LM87 |--C. bifasciatus (Zimmermann 1922) [=Bidessus (Clypeodytes) bifasciatus]LM87 |--C. darlingtoni Watts 1978LM87 `--C. migrator (Sharp 1882) [=Bidessus migrator]LM87 GuignotusLM87 Gibbidessus Watts 1978LM87 `--*G. chipi Watts 1978LM87 Terradessus Watts 1982LM87 `--*T. caecus Watts 1982LM87 TjirtudessusBW04 Comaldessus Spangler & Barr 1995BW04 `--*C. stygius Spangler & Barr 1995NR97 Sinodytes Spangler 1996BW04 `--S. hubbardi Spangler 1996BW04 Glareadessus Wewalka & Biström 1998BW04 |--G. franzi Wewalka & Biström 1998BW04 `--G. stocki Wewalka & Biström 1998BW04 Neobidessus Young 1967RL01 |--N. pulloidesRL01 `--N. pullusRL01 Boongurrus Larsson 1994NR97 `--*B. rivulus Larsson 1994NR97
*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.
[BP00] Bellini, R., F. Pederzani, R. Pilani, R. Veronesi & S. Maini. 2000. Hydroglyphus pusillus (Fabricius) (Coleoptera Dytiscidae): its role as a mosquito larvae predator in rice fields. Boll. Ist. Ent. “G. Grandi” Univ. Bologna 54: 155–163.
[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.
[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.
[VB21] Vasilikopoulos, A., M. Balke, S. Kukowka, J. M. Pflug, S. Martin, K. Meusemann, L. Hendrich, C. Mayer, D. R. Maddison, O. Niehuis, R. G. Beutel & B. Misof. 2021. Phylogenomic analyses clarify the pattern of evolution of Adephaga (Coleoptera) and highlight phylogenetic artefacts due to model misspecification and excessive data trimming. Systematic Entomology 46: 991–1018.
[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.