Enigmatheres, Campos, Ernesto, 2009

Campos, Ernesto, 2009, Pacific Ocean, with a reappraisal of the subfamily Pinnotherinae de Haan, 1833 (Crustacea: Brachyura: Pinnotheridae), Zootaxa 2022, pp. 29-44 : 31

Enigmatheres new genus

( Fig. 1 A–E)

Type species Fabia canfieldi Rathbun, 1918 , by present designation and monotypy.

Diagnosis. MXP3 with ischium and merus indistinguishably fused, inner and outer margin gently curved, lacking obtuse angle; carpus larger than conical propodus; small, narrow dactylus inserted on middle third of medioventral margin of propodus. Relative length of WL 2> 3> 1> 4; WL2 asymmetrical, right one third longer than left; dactyli short, slender and conical, slightly curved up to hooked, hard tip, except right dactylus of WL2 that is longer than other dactili and straight to the tip.

Etymology. From the Latin enigma (= mystery) to recognize that knowledge on the distribution and host species are still incomplete after more than nine decades since the discovery of the type species. Gender feminine.

Figures

FIGURE 1. Enigmatheres canfieldi (Rathbun, 1918) new combination, Monterey, California (USNM 8445). Adult female: A – B, left outer and right inner view of MXP 3; C, left cheliped; D, pollex and dactylus of left cheliped; E, left and right walking legs, respectively. Scales: A = 0.57 mm; B = 0.47 mm; C – D not at scale; E = 1 mm.