Hamodactylus Holthuis, 1952
publication ID |
https://doi.org/ 10.5852/ejt.2016.188 |
publication LSID |
lsid:zoobank.org:pub:809B9CDB-317A-4BFD-9D44-B413AE9D9C8E |
DOI |
https://doi.org/10.5281/zenodo.3852180 |
persistent identifier |
https://treatment.plazi.org/id/C51287DE-5B77-FFF5-FF6F-4CFCFA0DFA3C |
treatment provided by |
Valdenar |
scientific name |
Hamodactylus Holthuis, 1952 |
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Key for the species identification of adult specimens of the genus Hamodactylus Holthuis, 1952 View in CoL (modified from Fransen & Rauch 2013)
1. Carapace with supra-orbital tooth; dactylus of second pereiopod strongly hooked (fixed finger short, up to half length of dactylus) …………………………………………… H. boschmai Holthuis, 1952 View in CoL
– Carapace without supra-orbital tooth; dactylus of second pereiopod feebly curved, not hooked ……2
2. Second pereiopod with fixed finger of chela about as long as dactylus; first pereiopod with denticulate lamina along almost whole cutting edge of dactylus ……………………………………3
– Second pereiopods non-chelate, with fixed finger reduced to small stub or completely lacking; first pereiopod with denticulate lamina on distal 1/3 of dactylus …………………………………4
3. Anteriorly extended eyes shorter than rostrum; eyestalk short, about as long as wide; basal segment of antennular peduncle with 2–3 teeth on distolateral margin … H. noumeae Bruce, 1970b View in CoL
– Anteriorly extended eyes far overreaching rostrum; eyestalk long, about twice as long as wide; basal segment of antennular peduncle with one distolateral tooth………………………………… ……………………………………………………… H. macrophthalmus Fransen & Rauch, 2013 View in CoL
4. Fixed finger of second pereiopod fully reduced, lacking; telson with 2 pairs of dorsal spines; basal segment of antennular peduncle with distolateral margin bidentate (cutting edges of first pereiopod with 3–5 teeth on distal 1/3) …………………………………… H. paraqabai View in CoL sp. nov.
– Fixed finger of second pereiopod reduced to small but distinct stub; telson with 1 pair of dorsal spines; basal segment of antennular peduncle with multidentate distolateral margin (4 teeth, 1–2 in juveniles) …………………………………………………………………………………………5
5. Cutting edges of first pereiopod fingers with 1 tooth on distal 1/3; ventral rostral margin convex …………………………………………………………………… H. aqabai Bruce & Svoboda, 1983 View in CoL
– Cutting edges of first pereiopod fingers with 3–4 teeth on distal 1/3; ventral rostral margin straight ……………………………………………………………………………… H. pseudaqabai View in CoL sp. nov.
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