Figure 21. Minuca pugnax

Creator

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

Preview

Identifier

Figure 21

Medium

photograph

Date Created

5-2025

Keywords

Fiddler crabs;

Description

Alt Text: Composite photograph of the Minuca pugnax 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 21. Minuca pugnax (Smith, 1870). UNI 358. Collected: 15-Jul-2001, USA, Massachusetts, Lloyd Center, near Slocum River (41.5271500, -70.9832668). 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 (< 20 mm). Carapace length 65% width; frontal region 38% carapace width. Eyestalks very short. Carapace smooth and swollen (Fig. 21 A). Antero-lateral margins curving inward, postero-lateral margin curving strongly toward center line. Dactyl and pollex blade-like and longer than manus (Fig. 21B,C). Distal dactyl overlapping pollex, a set of 3-4 large tubercles proximal near articulation (Fig. 21 C). Pollex almost straight with a central cluster of tubercles. Inner manus with strong oblique ridge converging at apex on carpal cavity (Fig. 21C). Carina of tubercles following cavity up to superior edge of cavity. Strong line of tubercles following gap to articulation. Merus of walking legs thin (Fig. 21 E); width 37% length with some pubescence and long setae. Found within the USA along Atlantic coast from northeast Florida to Cape Cod Bay, Massachusetts (Fig. 21 G).

Comments

This composite image is of the Minuca pugnax 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 358

Year Collected

2001

Collection Location

41.5271500, -70.9832668

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 21. Minuca pugnax" (2025). Fiddler Crabs Image Gallery. 13.
https://scholarworks.uni.edu/fiddlercrabs/13