Galeus
Creators: name: Séret, Bernard
name: Last, Peter R.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Elasmobranchii
Carcharhiniformes
Scyliorhinidae
Galeus

description: Key to Indo-Pacific Galeus species
(adapted from Compagno, 1984)
1a- A crest of enlarged denticles on the preventral caudal margin....................................................................2
1b- No crest of enlarged denticles on the preventral caudal margin..................................................................3
2a- 3 broad dark saddles in front of 1st dorsal fin ......................................... G. boardmani (southern Australia)
2b- 10 to 16 narrow bands in saddles in front of 1st dorsal fin................ Galeus sp. B (northeastern Australia)
3a- Labial furrows very short, confined to mouth corners; snout broadly rounded (pre-oral length much shorter than mouth width) ...................................................................................... G. schultzi (Philippines)
3b- Labial furrows short but distinct, not confined to mouth corners; snout more pointed (pre-oral length about equal or longer than mouth width)....................................................................................................4
4a- Dorsal fins and sometimes caudal lobes black-tipped ............................... G. sauteri (Philippines to Japan)
4b- Dorsal and caudal fins not black-tipped, usually white edged....................................................................5
5a- Mouth lining dark, dusky to blackish..........................................................................................................6
5b- Mouth lining pale, white or light grey.........................................................................................................7
6a- Caudal fin relatively short, lower postventral caudal margin 12.4–14.5% TL; clasper short and thick (fall- ing well in front of anal origin in mature male, clasper outer length 5.2–7.3 % TL, its base width 3.0–4.9 times in outer length); origin of crest of enlarged denticles on upper caudal margin well in front of origin of caudal ventral lobe; precaudal vertebral centra 74–78 ........... G. gracilis (northern Australia, Indonesia)
6b- Caudal fin relatively long, lower postventral caudal margin 15.5–16.2% TL; clasper very long and slender (reaching anal origin in mature male, clasper outer length 9.0–11.2 % TL, its base width 7.2–10.0 times in outer length); origin of crest of enlarged denticles on upper caudal margin over level of origin of caudal ventral lobe; precaudal vertebral centra 81–86 ................................. G. priapus (New Caledonia, Vanuatu)
7a- Snout very long, pre-oral length over 7 % TL ........................................................... G. longirostris (Japan)
7b- Snout moderately elongated, pre-oral length less than 7 % TL...................................................................8
8a- Distance from mouth to inner nostril much shorter than length of upper labial furrow; anal-fin base rela- tively short, 8–10% TL, shorter than pelvic-anal interspace ................................... G. nipponensis (Japan)
8b- Distance from mouth to inner nostril longer than length of upper labial furrow; anal-fin base long and low, about 12% TL, longer than pelvic-anal interspace ...................................... G. eastmani (China Sea, Japan)
description: Published as part of Séret, Bernard & Last, Peter R., 2008, Galeus priapus sp. nov., a new species of sawtail catsharks (Carcharhiniformes: Scyliorhinidae) from New Caledonia, pp. 19-28 in Zootaxa 1813 on page 27, DOI: 10.5281/zenodo.182831