Callianassidae, Dana, 1852

Poore, Gary C. B., Dworschak, Peter C., Robles, Rafael, Mantelatto, Fernando L. & Felder, Darryl L., 2019, A new classification of Callianassidae and related families (Crustacea: Decapoda: Axiidea) derived from a molecular phylogeny with morphological support, Memoirs of Museum Victoria (Mem. Mus. Vic.) 78, pp. 73-146 : 87

Key to genera of Callianassidae

1. Antennular peduncle about 4 times the width of both eyestalks, twice as long as antennal peduncle, with 2 dense rows of adjacent long setae on lower surface (fig. 6n); maxilliped 3 merus produced as massive triangular lobe alongside palp (fig. 7k) Trypaea

– Antennular peduncle at most 3 times the width of both eyestalks, with at most bands of scattered long setae on lower surface (fig. 6a); maxilliped 3 merus distally convex at most 2

2. Small triangular sclerite present on branchiostegite at anterior end of linea thalassinica (fig. 6a) Aqaballianassa

– Without triangular sclerite on branchiostegite at anterior end of linea thalassinica (figs 6f, k, h) 3

3. Telson tapering, posterior margin with medial spine in deep notch (figs 11g, o) 4

– Telson posterior margin convex, truncate or at most with shallow medial concavity, sometimes with small medial spine 5