Figure 22. Minuca rapax

Alt Text: Composite photograph of the Minuca rapax 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 22. Minuca rapax (Smith, 1870)*. UNI 478. Collected: 5- Sep- 1976, Mexico, Yucatan, San Felipe, Boca del Rio Lagartos, near military base (21.594013, -88.161615). 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: Large species (width < 32 mm). Carapace length 63% width; frontal region 31% carapace width (Fig. 22A). Eyestalks short. Carapace surface rough appearing with small tubercles but no pits. Anterolateral angles pointed inward slightly. Intersection of anterolateral and posterolateral lines forming smooth curve. Major cheliped with ridge on dorsal surface (Fig. 22A). Dactyl and pollex blade-like (Fig. 22B,C). Gap wide. Pollex with mid length large tubercle and terminus trifurcated. Dactyl with 3–4 larger tubercles proximal to articulation. Inner surface of cheliped with carpal carina terminating abruptly in palm (Fig. 22C). Predactyl ridge parallel to row of tubercles on dactyl articulating joint (clearly not curved toward palm and carpal cavity). Oblique ridge simple line of tubercles running from carpal cavity to ventral edge of manus. Proximal apex not prominent. On ambulatory legs, merus width 37% length, dorsal and lateral surfaces with pubescence and long setae (Fig 22A,E). Ventral surface no pubescence or long setae. Pantropical species, found from south Florida and Tabasco, Mx to Florianópolis, Santa Caterina, Brazil (Fig. 22G). * This is species is morphologically indistinguishable from Minuca virens (Fig 24).

Publication Details

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UNI ScholarWorks (University of Northern Iowa)
Published
2025-05-01
Primary Topic
Crustacean biology and ecology
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article
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Figure 22. Minuca rapax

UNI ScholarWorks (University of Northern Iowa)
Crustacean biology and ecology
article

Figure 22. Minuca rapax

article en

Abstract

Alt Text: Composite photograph of the Minuca rapax 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 22. Minuca rapax (Smith, 1870)*. UNI 478. Collected: 5- Sep- 1976, Mexico, Yucatan, San Felipe, Boca del Rio Lagartos, near military base (21.594013, -88.161615). 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: Large species (width < 32 mm). Carapace length 63% width; frontal region 31% carapace width (Fig. 22A). Eyestalks short. Carapace surface rough appearing with small tubercles but no pits. Anterolateral angles pointed inward slightly. Intersection of anterolateral and posterolateral lines forming smooth curve. Major cheliped with ridge on dorsal surface (Fig. 22A). Dactyl and pollex blade-like (Fig. 22B,C). Gap wide. Pollex with mid length large tubercle and terminus trifurcated. Dactyl with 3–4 larger tubercles proximal to articulation. Inner surface of cheliped with carpal carina terminating abruptly in palm (Fig. 22C). Predactyl ridge parallel to row of tubercles on dactyl articulating joint (clearly not curved toward palm and carpal cavity). Oblique ridge simple line of tubercles running from carpal cavity to ventral edge of manus. Proximal apex not prominent. On ambulatory legs, merus width 37% length, dorsal and lateral surfaces with pubescence and long setae (Fig 22A,E). Ventral surface no pubescence or long setae. Pantropical species, found from south Florida and Tabasco, Mx to Florianópolis, Santa Caterina, Brazil (Fig. 22G). * This is species is morphologically indistinguishable from Minuca virens (Fig 24).

UNI ScholarWorks (University of Northern Iowa)
Openalex Percentile: Top 34%
Crustacean biology and ecology
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Figure 22. Minuca rapax · UNI ScholarWorks (University of Northern Iowa) (2025) | TGRS Research Map | TGRS