Neocrangon zacae (Chace, 1937) synonymized with N-resima (Rathbun, 1902), and compared with N-communis (Rathbun, 1899) (Decapoda: Caridea: Crangonidae)
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abstract
Features previously used to distinguish between Neocrangon zacae and N. resima overlap greatly. The rostrum can be low and narrow, slightly elevated and deep, or high with a plate with or without teeth. The width of the hand of the first pereopod also varies, as does the distal width of the antennal scale. Similar variability exists in the shape of the rostrum of N. communis, but this species has a prominent carina on the fifth abdominal somite and has broader hands of the first pereopod and a more horizontal dactyl. Usually, adult N. resima are smaller than N. communis. Neocrangon zacae is considered to be a junior synonym of N. resima. A redescription of Neocrangon resima is presented.
