Difference between revisions of "Papuadessus"
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* ''[[Papuadessus pakdjoko]]'' {{aut|Balke}}, 2001 | * ''[[Papuadessus pakdjoko]]'' {{aut|Balke}}, 2001 | ||
| − | ==Species ( | + | ==Species (2)== |
| − | ''[[Papuadessus pakdjoko]]'' | + | ''[[Papuadessus pakdjoko]]'', ''[[Papuadessus baueri]]'' |
| + | |||
| + | ==Taxonomy== | ||
| + | Large, length 3.1 - 3.4 mm. Body elongate-oval; base of pronotum distinctly more narrow than base of elytron, continuously narrowing towards head. Neither a cervical (see Biström 1988a, = occipital line, e.g. of Larson et al. 2000) nor a sutural line present. Pronotal and elytral plica present; pronotal plica long, sinuate; elytral plica very short, indistinct in some specimens. Epipleura lack a basal pit which is posteriorly delimited by a carina. | ||
| + | In Biström's (1988a) key to world genera of Bidessini, Papuadessus runs to couplet 14, which contains Microdessus and Uvarus. Microdessus is a monotypic South American genus, which is characterised by possession of four distal processes on the median lobe of aedeagus. Uvarus is a problematic group. Its type species is the American Hydroporus lacustris Say, the types of which are lost, however (Larson et al. 2000). The genus as currently viewn contains > 50 species, and has a wide range, spanning North and Central America, Africa, Asia and Australia. It was pointed out that it may be paraphyletic and is in need of global review (Biström 1988a, b; Larson et al. 2000). Papuadessus differs from Uvarus in that it is larger (Uvarus: < 2.8 mm), and has a simply runded tip of paramere (with emargination or small hook or otherwise modified in Uvarus). | ||
| + | In P. pakdjoko, there are two marginal tongue-like lamellae on the ventral surface of the elytron: one in the middle, and one apically (Figure 7). Only one such lamella is present for example in Liodessus species I (Balke) have examined, the apical one (Figure 8). However, both character states are widely distributed among Bidessini genera and the informative value for phylogenetic analysis remains to be evaluated. | ||
==References== | ==References== | ||
* {{aut|Balke, M.}} 2001: ''Papuadessus pakdjoko'' – a new genus and species of rheobiont diving beetle from New Guinea of potential use for environmental impact assessments (Coleoptera, Dytiscidae). ''Hydrobiologia'', '''464''': 107-112. | * {{aut|Balke, M.}} 2001: ''Papuadessus pakdjoko'' – a new genus and species of rheobiont diving beetle from New Guinea of potential use for environmental impact assessments (Coleoptera, Dytiscidae). ''Hydrobiologia'', '''464''': 107-112. | ||
| − | == | + | |
| + | ==Online resources== | ||
* [http://www.organismnames.com/query.htm?q=Papuadessus&searchType=simple&so=a0 ION] | * [http://www.organismnames.com/query.htm?q=Papuadessus&searchType=simple&so=a0 ION] | ||
* [http://www.ubio.org/NZ/search.php?search=Papuadessus&selectall=Check+All&colname=on&colcategory=on&colauthority=on&colcomments=on&page=&vol= Nomenclator Zoologicus] | * [http://www.ubio.org/NZ/search.php?search=Papuadessus&selectall=Check+All&colname=on&colcategory=on&colauthority=on&colcomments=on&page=&vol= Nomenclator Zoologicus] | ||
| + | * [http://species.wikimedia.org/wiki/Papuadessus Wiki Species] | ||
Latest revision as of 12:02, 27 November 2013
Contents
Ordo: Coleoptera
Familia: Dytiscidae
Subfamilia: Hydroporinae
Tribus: Bidessini
Genus: Papuadessus
Name
- Papuadessus Balke, 2001 Wikispecies link
- Gender: masculine
- Original status: valid genus
Type species
- Papuadessus pakdjoko Balke, 2001
Species (2)
Papuadessus pakdjoko, Papuadessus baueri
Taxonomy
Large, length 3.1 - 3.4 mm. Body elongate-oval; base of pronotum distinctly more narrow than base of elytron, continuously narrowing towards head. Neither a cervical (see Biström 1988a, = occipital line, e.g. of Larson et al. 2000) nor a sutural line present. Pronotal and elytral plica present; pronotal plica long, sinuate; elytral plica very short, indistinct in some specimens. Epipleura lack a basal pit which is posteriorly delimited by a carina. In Biström's (1988a) key to world genera of Bidessini, Papuadessus runs to couplet 14, which contains Microdessus and Uvarus. Microdessus is a monotypic South American genus, which is characterised by possession of four distal processes on the median lobe of aedeagus. Uvarus is a problematic group. Its type species is the American Hydroporus lacustris Say, the types of which are lost, however (Larson et al. 2000). The genus as currently viewn contains > 50 species, and has a wide range, spanning North and Central America, Africa, Asia and Australia. It was pointed out that it may be paraphyletic and is in need of global review (Biström 1988a, b; Larson et al. 2000). Papuadessus differs from Uvarus in that it is larger (Uvarus: < 2.8 mm), and has a simply runded tip of paramere (with emargination or small hook or otherwise modified in Uvarus). In P. pakdjoko, there are two marginal tongue-like lamellae on the ventral surface of the elytron: one in the middle, and one apically (Figure 7). Only one such lamella is present for example in Liodessus species I (Balke) have examined, the apical one (Figure 8). However, both character states are widely distributed among Bidessini genera and the informative value for phylogenetic analysis remains to be evaluated.
References
- Balke, M. 2001: Papuadessus pakdjoko – a new genus and species of rheobiont diving beetle from New Guinea of potential use for environmental impact assessments (Coleoptera, Dytiscidae). Hydrobiologia, 464: 107-112.
