A reappraisal of the family Goneplacidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) and revision of the subfamily Goneplacinae, with the description of 10 new genera and 18 new species Author Castro, Peter Biological Sciences Department, California State Polytechnic University, Pomona, CA 91768 - 4032 (USA) pcastro @ csupomona. edu text Zoosystema 2007 29 4 609 774 journal article 10.5281/zenodo.4525564 1638-9387 AE00CF1695172F4E835BA153066E2C1A 4525564 KEY TO SPECIES OF MICROGONEPLAX N. GEN. 1. G1 with pointed tip, without denticles, conspicuously bent median portion thicker than tip with row of large denticles along inner and outer margins (see Fig. 41C ). G2 with two terminal spinules (see Fig. 41D ) .......................................... Microgoneplax caenis n. sp. — G1 with pointed tip with denticles, median portion not bent. G2 with one terminal spicule or process ........................................................................................................ 2 2. G1 slender throughout its length, slightly sinuous, without broadened median portion ... 3 — G1 with broadened median portion, not sinuous ....................................................... 4 3. Male abdomen broad (see Chen 1998 : fig. 14-6, as Ommatocarcinus elegans ) ................ .................................................................................................... Microgoneplax elegans — Male abdomen slender (similar to abdomen of Microgoneplax caenis : see Fig. 41B ) ........ ............................................................................................. Microgoneplax prion n. sp. 4. G1 with straight distal part; broadened, paddle-like median portion (see Fig. 43B ) ....... .............................................................................................. Microgoneplax cope n. sp. — G1 with conspicuously bent distal part bordered by sparse, large denticles (see Fig. 44B ) ............................................................................................ Microgoneplax pelecis n. sp.