Figure 005. Uca maracoani

Creator

Abby Hutchins, University of Northern IowaFollow
Amber Finke, University of Northern IowaFollow
Carl L. Thurman, University of Northern IowaFollow

Preview

Identifier

Figure 5

Medium

photograph

Date Created

5-2025

Keywords

Fiddler crabs;

Description

Alt Text: Composite photograph of the Uca maracoani 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 5. Uca maracoani (Latreille, 1802-1803). UNI 40. Collected: 20 July 2010, southwestern Atlantic Ocean, Brazil, Maranhão, São Luis, Praia da Raposa, Rio Munin (-2.415758, -44.100823). Range: Trinidad-Tobago to Paraná, Brazil. Space 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: Large species (width < 45 mm). Carapace granular, carapace length 68.7% width (Fig. 5A); female 72%, male 68%. Eyestalk very long and thin. Frontal region 9.6% carapace width (Fig. 5A,D). Suborbital margin with small, square, dentate tubercles (Fig. 5D). Anterolateral angle sharp, pointing outward. Both dactyl and pollex very broad, no large gap when closed (Fig. 5B,C). Terminus of dactyl and pollex both with sharp spines (Fig. 5C). Ventral manus with very large tubercles (Fig. 5B). Walking legs with few setae. Merus width 43.7% length. Found along the Atlantic coast of South America from Trinidad-Tobago to Florianopolis, Brazil (Fig. 5G). Not widely known in Caribbean. Very old AMNH (#2466) specimen from the Dominican Republic.

Comments

This composite image is of the Uca maracoani fiddler crab. It is a part of the parent Fiddler Crabs Image Gallery collection at the University of Northern Iowa, which has images of Fiddler Crabs located in the Atlantic Ocean and the Gulf of Mexico from the following genera: Afruca, Leptuca, Minuca, and Uca.

Object Description

1 PNG file

UNI Specimen Number

UNI 40

Year Collected

2010

Collection Location

-2.415758, -44.100823

Gender

male

Copyright

©2025 Abby Hutchins, Amber Finke, and Carl L. Thurman

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License

Type

Image

Language

en

File Format

image/png

Recommended Citation

Hutchins, Abby; Finke, Amber; and Thurman, Carl L., "Figure 005. Uca maracoani" (2025). Fiddler Crabs Image Gallery. 14.
https://scholarworks.uni.edu/fiddlercrabs/14