Dysomma
publication ID |
https://doi.org/ 10.11646/zootaxa.4060.1.12 |
publication LSID |
lsid:zoobank.org:pub:DCE83F63-6CBE-4166-884F-347DF0BEBB62 |
DOI |
https://doi.org/10.5281/zenodo.5295878 |
persistent identifier |
https://treatment.plazi.org/id/2503879E-FFCB-7F07-FF05-FA2BE6EEDE1A |
treatment provided by |
Plazi |
scientific name |
Dysomma |
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Key to species of Dysomma View in CoL and Dysommina in Taiwan
As mentioned above, Dysommina shares many external characters with Dysomma and is thus included in this key.
1A. Pectoral fin absent; about 2 rows of teeth on upper jaw......................................... D. dolichosomatum
1B. Pectoral fin present; 4 or more rows of teeth on upper jaw...................................................... 2
2A. Intermaxillary teeth present; uniserial teeth on dentary......................................................... 3
2B. Intermaxillary teeth absent; multiserial teeth on dentary........................................................ 6
3A. Anus anterior, trunk shorter than head length................................................................4
3B. Anus posterior, trunk much longer than head length............................................. D. opisthoproctus
4A. Two large compound teeth followed by row of 22–31 smaller ones on lower jaw......................... D. polycatodon
4B. Single row of 7 to 11 large compound teeth on lower jaw...................................................... 5
5A. Total vertebrae 137–139; total lateral-line pore 40–48....................................... D. taiwanensis sp. nov.
5B. Total vertebrae 119–130; total lateral-line pores 57–75.............................................. D. anguillare
6A. Anus anterior, just below pectoral fin...................................................................... 7
6B. Anus posterior, well behind pectoral fin.................................................................... 8
7A. Lower jaw projects beyond snout, not appressed to upper jaw when mouth fully closed; lateral line extends to 1/2 HL before the caudal-fin base.......................................................................... D. melanurum
7B. Lower jaw included, not projecting beyond snout, appressed to upper jaw when mouth fully closed; lateral line extends to about anterior 23% of body...................................................................... D. goslinei
8A. Five compound teeth on vomer; lateral-line pores present; head pores present on frontal, infraorbital posterior to eye and preopercular................................................................................. D. longirostrum
8B. Four compound teeth on vomer; pores absent onlateral line, frontal, infraorbital posterior to eye and preopercular............................................................................................... Dysommina rugosa View in CoL
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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