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Type Material
Holotype: "Male holotype, female allotype, and an immature from San Carlos Bay, Sonora, Mexico on August 10, 1960 by P.H. Arnaud, E.S. Ross, and D.C. Rentz, deposited in the California Academy of Science, San Francisco" (Muma, 1987, p. 13). Chelicerae Description: "Structure similar to that of E. andreasana but specifically different as indicated in measurements and ratios...figures 30 and 31 of chelicera. There is no mesal tooth on the movable finger of the chelicerae, the setal articulation are of the fixed cheliceral finger occupies two-thirds of the length of the finger" (Muma, 1987, p. 16). Ctenidia: of the female allotype: "there are 2 trace ctenidia on the first post-stigmatic abdominal sternite" (Muma, 1987, p. 13). Diagnosis: "Males of this species are distinguished from the typical species of the group by their larger size, pale coloration, more extensive setal articulation are on the fixed cheliceral finger, and an obscure apical flange on the movable cheliceral finger. Females are distinguished by their size, coloration, cheliceral pattern and more obvious lateral pits at the margins of the opercula" (Muma, 1987, p. 13). Eremochelis plicatus – male holotype San Carlos Bay, Sonora, Mexico on August 10, 1960; coll., P.H. Arnaud, E.S. Ross, and D.C. Rentz Measurements:
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