Figure 010. Leptuca speciosa

Creator

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

Preview

Identifier

Figure 10

Medium

photograph

Date Created

5-2025

Keywords

Fiddler crabs;

Description

Alt Text: Composite photograph of the Leptuca speciosa 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 10. Leptuca speciosa (Ives, 1891). UNI-93. Collected: 4 September 1976, Mexico, Yucatan, Harbor, West of Progresso (21.277956, -89.703382). 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: Small species (< 16 mm). Carapace length 69% width; frontal region about 37% of carapace width (Fig. 10A,D). Eyestalks short. Carapace widest at antero-lateral angle (Fig. 10A). Anterolateral angles pointed forward. Anterior lateral margins straight and parallel. Carapace surface often smooth but may have W-shape arrangement of pubescence on posterior carapace (Fig. 10A). Dactyl and pollex much longer than manus (Fig. 10 B,C). Gape wide. Dactyl overlaps distal pollex with few tubercles lining dactyl and pollex. Distal pollex pointed (Fig. 10C). On inner manus, tuberculated, oblique ridge prominent (Fig. 10C). Walking legs with some setae (Fig. 10E). For walking legs, thick pile on dorsal surface of dactyl and propodus. Merus width 34% length; female 30%, male 36%. Inhabiting coast of Mississippi, Florida, Bahamas Cuba and the Yucatan peninsula in Mexico (Fig. 10G).

Comments

This composite image is of the Leptuca speciosa 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 93

Year Collected

1976

Collection Location

21.277956, -89.703382

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 010. Leptuca speciosa" (2025). Fiddler Crabs Image Gallery. 4.
https://scholarworks.uni.edu/fiddlercrabs/4