Fiddler Crabs Image Gallery
Preview
Identifier
Figure 19
Medium
photograph
Date Created
5-2025
Keywords
Fiddler crabs;
Description
Alt Text: Composite photograph of the Minuca mordax 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 19. Minuca mordax (Smith, 1870). UNI 726. Collected: 12 March 2018, Atlantic Ocean, Trinidad and Tobago, Cocos Bay, Narvia Co., Bush-Bush Wildlife Sanctuary, Mouth Navet River (10.39862, -61,02523). 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: Species moderate-sized (< 26mm). Carapace smooth without pubescence or pile (Fig. 19A). Length 70% width; frontal region about 40% carapace width. Eyestalks very short. Antero-lateral margins converging to midline. Posterior lateral line strongly converging giving carapace a trapezoid shape. Dactyl and pollex longer than manus (Fig. 19B,C). Gap about same width as base of pollex. Distal dactyl overlaps pollex. Dactyl with low tubercles; one large tubercle at mid-length. Pollex with single large tubercle near mid-length, terminus trifurcated. On inner manus, oblique ridge distinct but tubercles not arranged in a single row. Where ridge meets carpal cavity there are several prominent tubercles. No carina along carpal cavity. Merus of walking legs with pubescence and long setae (Fig. 19A,E). Merus width 33% length. First walking leg with pubescence completely surrounding carpus and propodus (Fig. 19E). Pantropical species collected between the Sittee River, Freetown Area, Belize and Mampituba River, Torres, Rio Grande do Sul, Brazil. Not found on Caribbean islands (Fig. 19G).
Object Description
1 PNG file
UNI Specimen Number
UNI 726
Year Collected
2018
Collection Location
10.39862, -61,02523
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 019. Minuca mordax" (2025). Fiddler Crabs Image Gallery. 12.
https://scholarworks.uni.edu/fiddlercrabs/12
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Figure-19_minuca_mordax_links.pdf (389 kB)PDF version composite image (active links)
Keywords
Fiddler crabs;
Comments
This composite image is of the Minuca mordax 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.