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no nape crestD XXXVIII-XL (elements 90-96)
D spiny part slightly < soft part, notch between themC small, forkedpelvics: absent in adults, I tiny spine in juveniles -
no nape crestD XL-XLIV (96-102 elements)
D spiny part slightly < soft part, notch between themC small, forkedpelvics: absent in adults, I tiny spine in juveniles