Johngarthia

Perger, Robert, Vargas, Rita & Wall, Adam, 2011, Johngarthia cocoensis, a new species of Gecarcinidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) from Cocos Island, Costa Rica, Zootaxa 2911, pp. 57-68 : 63

Key to Pacific Ocean species of Johngarthia

1. Outer apical lobe of third maxilliped merus as long as or longer than inner apical lobe, outer apical lobe lateral border rounded ( Fig. 5 D)................................................................................... J. planatus

- Outer apical lobe of third maxilliped merus shorter than inner apical lobe, outer apical lobe lateral border relatively straight. 2

2. Third maxilliped merus longer than wide, inner apical lobe not reaching epistomal tooth, lobes mostly separated in resting position, palp of third maxilliped merus partly exposed ( Fig. 5 B)................................. J. cocoensis n. sp.

- Third maxilliped merus as long as wide, inner apical lobe reaching epistomal tooth, lobes mostly overlapping in resting position, concealing palp of third maxilliped merus ( Fig. 5 C)........................................... J. malpilensis

Figures

FIGURE 5. Frontal view (P, pit at orbital angle; M, merus of third maxilliped; OL, outer apical lobe of M; IL, inner apical lobe of M), A, Gecarcoidea lalandii, female, LACM, JWK- 326 (Marshall Islands, Enewetak Atoll, Igurin I.); B, Johngarthia cocoensis n. sp., paratype, female, MZ-UCR- 623 - 01 (Manuelita I., Costa Rica); C, Johngarthia malpilensis, female, LACM (Malpelo I., Colombia); D, Johngarthia planatus, female, LACM (Clipperton I., Mexico).