Two new species of the laomediid genus Naushonia Kingsley, 1897 (Crustacea: Decapoda: Gebiidea) from the Indo-West Pacific Komai, Tomoyuki Anker, Arthur Zootaxa 2010 2504 31 46 b0d1bf87-999b-436b-86a4-3e91990de14e [365,498,370,396] Malacostraca Laomediidae Naushonia Animalia Decapoda 14 45 Arthropoda genus    1. Postorbital spine simple ................................................................................................................................................ 2  – Postorbital spine bifid or trifid...................................................................................................................................... 8   2. Second to fifth abdominal somites with sharp median and submedian carinae ............................................................. ...............................................................................................  N. carinata[Western Pacific: Vietnamand Philippines]  – Second to fifth abdominal somites without sharp median and submedian carinae (trace of median carinae sometimes present).......................................................................................................................................................................... 3   3. Palm of cheliped bearing 2 prominent spines proximomesially, cutting edge parallel to lateral margin; dactylus with row of small spines proximally on extensor margin [rostrum triangular in dorsal view; telson with 1 small spine on lateral margin] ..............................................................................................  N. panamensis[Eastern Pacific: Panama]  – Palm of cheliped unarmed at proximomesial margin, cutting edge more or less oblique; dactylus without row of spines proximally on extensor margin .......................................................................................................................... 4   4. Rostrum triangular in dorsal view; submedian and lateral carinae on gastric region of carapace spinose; lateral margin of telson armed with more than 1 spine [palm with row of small spines on lateral margin].................................... .....................................................  N. lactoalbida[Indo-West Pacific: Mozambiqueand Ryukyu Archipelago, Japan]  – Rostrum rounded in dorsal view; submedian and lateral carinae on gastric region of carapace minutely granulate; lateral margin of telson unarmed or armed with 1 spine............................................................................................... 5   5. Telson unarmed on lateral margin; fixed finger arising at about mid-length of palm ................................................. 6  – Telson armed with 1 minute spine on lateral margin; fixed finger arising distal or proximal to mid-length of palm.... ..................................................................................................................................................................................... 7   6. Eyestalk with prominent distomesial spine; antennal scale with 11 or 12 lateral spines including terminal spine; cheliped dactylus markedly broadened proximal to mid-length ..............................  N. japonica[Western Pacific: Japan]  – Eyestalk without prominent distomesial spine; antennal scale with 5 or 6 lateral spines including terminal spine; cheliped dactylus not broadened proximal to mid-length............................  N. perrieri[Indian Ocean: Gulf of Aden]   7. Antennal scale reaching to distal margin of fourth segment of antennal peduncle; cheliped palm 1.3 times longer than wide, fixed finger arising distal to mid-length of palm, lateral margin entire, cutting edge between fixed finger and subdistal large teeth faintly denticulate..........  N. latimana n. sp.[Indian Ocean: Mayotte, Comoro Archipelago]  – Antennal scale distinctly overreaching distal margin of fourth segment of antennal peduncle; cheliped palm twice as long as wide, fixed finger arising proximal to mid-length of palm, lateral margin serrate, cutting edge between fixed finger and subdistal large teeth serrate with slender, sharp spines.................................................................................. .......................................................  N. serratipalma n. sp.[Western Pacific: Society Archipelago, French Polynesia]   8. Telson unarmed on lateral margin; antennal scale with 10 or more lateral spines; uropodal exopod with 5 spines on lateral margin .........................................  N. crangonoides[Western Atlantic: Massachusetts to North Carolina, U.S.A.]  – Telson with spine(s) on lateral margin; antennal scale with less than 10 lateral spines; uropodal exopod with 2 spines on lateral margin ........................................................................................................................................................... 9   9. Telson with 1 spine on lateral margin; antennal scale with terminal spine strongly curved mesially ........................... .................................................................  N. portoricensis[Western Atlantic: Puerto Ricoand Dominican Republic]  – Telson with 3 spines on lateral margin; antennal scale with terminal spine straight...................................................... .....................................................................  N. macginitiei[Eastern Pacific: southern California to Sonora, Mexico]