Figure 017. Minuca marguerita

Alt Text: Composite photograph of the Minuca marguerita fiddler crab which includes several black & white images of different views of the crab, a color photograph, and a distribution map. Composite Image Description: Figure 17. Minuca marguerita (Thurman, 1981). UNI 33. Collected: December 1972, Mexico, Tamaulipas, Tampico, Rio, Panuco, riverbank near ferry (22.245792, -97.82552). Scale Bar = 10mm. (A) Dorsal view. (B) Front view. (C) Inner cheliped. (D) Ocular view. (E) Ambulatory. (F) Color Photo. (G) Distribution Map (Finke 2024). Species Description: Moderate-sized crab (< 25mm). Carapace length 66% of width; surface finely granular and pitted (Fig. 17A). Frontal region 31% carapace width. Antero-lateral angle pointed forward. H-depression prominent. Posterior lateral margins curving to midline. Dactyl and pollex about same length as manus (Fig. 17B). Gap wide. Pollex with two large tubercles; one central second near terminus (Fig. 17C). Manus covered with fine tubercles. On inner manus, obliques ridge developed near carpal cavity but weak distally (Fig. 17C). Ridge comes to peak at carpal cavity then a line of tubercles follows outer edge of cavity up to dorsal edge. Another prominent row of tubercles extends forward toward base of dactyl. On walking legs, merus width 40 % of length (Fig. 17E). Dorsal margin of walking legs slightly convex with short setae. Some pubescence on manus segment. Species endemic to eastern Mexico between Laguna Largo, Tamaulipas and Rio Champotón, Campeche (Fig.17G).