A new species of the alpheid shrimp genus Triacanthoneus Anker, 2010 (Crustacea: Alpheidae) from Belize Author Alvarez, Fernando Author Iliffe, Thomas M. Author Villalobos, José Luis text Zootaxa 2014 3768 1 journal volume 46372 10.11646/zootaxa.3768.1.6 47849b01-8986-449e-9f03-aeaa5c91e674 1175-5326 230282 C081C8BF-B536-41F3-9A6B-9A34443009CE Key to the species of Triacanthoneus (modified from Anker, 2010 ) 1. Orbital margin of carapace forming acute tooth-like projection, dorsolateral teeth slightly anterior to mediodorsal tooth............................................................................ Triacanthoneus alacranes Anker, 2010 - Orbital margin of carapace without tooth-like projection, dorsolateral teeth clearly anterior to mediodorsal tooth.......... 2 2. Eyes not visible in dorsal view covered by carapace, tip of rostrum reaching midportion of third antennular article................................................... Triacanthoneus akumalensis Alvarez, Iliffe, Gonzalez & Villalobos, 2012 - Eyes visible in dorsal view, tip of rostrum reaching midportion of second antennular article.......................... 3 3. Dorsolateral teeth of carapace in a submarginal position near orbital margin; posterior margin of telson with distinct medial U- shaped notch.............................................................. Triacanthoneus chapelianus n. sp. - Dorsolateral teeth of carapace in hepatic position; posterior margin of telson straight, without U-shaped notch............ 4 4. Major chela with fingers longer than palm, ventral tooth of rostrum directed forwards...... Triacanthones toro Anker, 2010 - Major chela with fingers shorter than palm, ventral tooth of rostrum directed downwards.................................................................................................... Triacanthoneus pacificus Anker, 2010