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93 results for “Petrolisthes”
FIGURE 2 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 2. Petrolisthes lazarus sp. nov., female holotype from Isla Saboga, Las Perlas Islands, Panama (MZUSP 33807): (A) dorsal view; (B) ventral view; (C) anterior (frontal) view. Photographs by A. Anker.
FIGURE 1 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 1. Petrolisthes lazarus sp. nov., female holotype from Isla Saboga, Las Perlas Islands, Panama (MZUSP 33807): (A) carapace, dorsal view; (B) fronto-orbital region of carapace, anterior view; (C) carapace, lateral view of branchiostegite; (D) right antennule, ventral view; (E) right antenna, dorsal view (flagellum omitted); (F) left Mxp 3, ventral (exterior) view (flagellum of exopod omitted); (G) left P1, dorsal view; (H) right P1, dorsal view; (I) right P2, lateral view; (J) telson, external view; (K) thoracic sternum, ventral view. Setae omitted for clarity. Scale bars: 1 mm.
FIGURE 7 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 7. Mixed sand-rock intertidal at La Cruz de Huanacaxtle, Nayarit, Pacific coast of Mexico, collection locality of Petrolisthes crenulatus (Lockington, 1878): (A) general ocean view; (B) detail of rocks and sand; (C) one of the collected porcelain crabs in situ, exposed after flipping a large rock. Photographs by L.D. Santana-Moreno.
FIGURE 5. Petrolisthes crenulatus Lockington, 1878 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 5. Petrolisthes crenulatus Lockington, 1878, male from La Cruz de Huanacaxtle, Nayarit, Mexico (CNCR 35708): (A) dorsal view; (B) ventral view; (C) anterior (frontal) view. Photographs by L.D. Santana-Moreno.
FIGURE 4 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 4. Extensive rocky intertidal at Río Mar, Pacific coast of Panama, collection locality of paratype of Petrolisthes lazarus sp. nov.: (A) beach view, showing coastal development; (B) ocean view. Photographs by I.N. Marin.
FIGURE 8 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 8. Petrolisthes lewisi (Glassell, 1936) [A, B] and Petrolisthes ortmanni Nobili, 1901 [C]: (A) male from Los Negritos, off Bahía Málaga, Pacific coast of Colombia (CERBMcr UV 2019-103), dorsal view; (B) ovigerous female from the same locality (CERBMcr UV 2019-102); male from the same locality (CERBMcr UV 2019-102). Photographs by A. Anker.
FIGURE 3 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 3. Petrolisthes lazarus sp. nov., female paratype from Río Mar, Panama (MZUSP 33686), dorsal view. Photograph by A. Anker.
FIGURE 6. Petrolisthes crenulatus Lockington, 1878 in A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura Porcellanidae)
FIGURE 6. Petrolisthes crenulatus Lockington, 1878: (A) ovigerous female from La Cruz de Huanacaxtle, Nayarit, Mexico (CNCR 35709), dorsal view; (B) male from the same locality (CNCR 35710), dorsal view. Photographs by L.D. Santana- Moreno.
Data from: Description of a new species of Petrolisthes in the Indo-West Pacific with a redefinition of P. hastatus Stimpson, 1858 and resurrection of P. inermis (Heller, 1862) (Crustacea, Anomura, Porcellanidae)
The porcellanid crab Petrolisthes hastatus Stimpson, 1858, has been traditionally viewed as a highly variable species with a wide distribution in the West Pacific. For more than a century there has been taxonomic confusion of this species with morphologically similar taxa, some of which were synonymized with Stimpson's taxon. We redefine P. hastatus, resurrect P. inermis as a valid species, discuss the status of P. tenkatei De Man, 1893, and describe a new species as P. elegantissimus from Indonesia.
Data from: Phylogeography of Petrolisthes armatus, an invasive species with low dispersal ability
Theoretically, species with high population structure are likely to expand their range, because marginal populations are free to adapt to local conditions; however, meta-analyses have found a negative relation between structure and invasiveness. The crab Petrolisthes armatus has a wide native range, which has expanded in the last three decades. We sequenced 1718 bp of mitochondrial DNA from native and recently established populations to determine the population structure of the former and the origin of the latter. There was phylogenetic separation between Atlantic and eastern Pacific populations, and between east and west Atlantic ones. Haplotypes on the coast of Florida and newly established populations in Georgia and South Carolina belong to a different clade from those from Yucatán to Brazil, though a few haplotypes are shared. In the Pacific, populations from Colombia and Ecuador are highly divergent from those from Panamá and the Sea of Cortez. In general, populations were separated hundreds to million years ago with little subsequent gene flow. High genetic diversity in the newly established populations shows that they were founded by many individuals. Range expansion appears to have been limited by low dispersal rather than lack of ability of marginal populations to adapt to extreme conditions.
FIGURE 12 in The Porcellanidae (Crustacea: Decapoda: Anomura) of the Red Sea with description of a new species of Petrolisthes
FIGURE 12. Petrolisthes ornatus (Paulson, 1875), male, Kenya, Indian Ocean (H.G. Müller, personal collection).
FIGURE 8 in The Porcellanidae (Crustacea: Decapoda: Anomura) of the Red Sea with description of a new species of Petrolisthes
FIGURE 8. Petrolisthes lamarckii (Leach, 1820), male, Indian Ocean, Kenya, (H.G. Müller, personal collection).
FIGURE 4. Petrolisthes aegyptiacus n in The Porcellanidae (Crustacea: Decapoda: Anomura) of the Red Sea with description of a new species of Petrolisthes
FIGURE 4. Petrolisthes aegyptiacus n. sp., female, holotype, Red Sea, Koseir. (a) Dorsal view. (b) Right first walking leg, ventral view. (c) Ischium and merus of left cheliped, ventral view. (d) Basal segment of antennule. (e) First movable segments of antenna.
FIGURE 7. Petrolisthes c.f in The Porcellanidae (Crustacea: Decapoda: Anomura) of the Red Sea with description of a new species of Petrolisthes
FIGURE 7. Petrolisthes c.f. donanensis, male, Egypt, Red Sea, Koseir (SMNS ZIa 3365). (a) Carapace, dorsal view. (b) Left cheliped, dorsal view. (c) Second walking leg, dorsal view. (d) Third walking leg, dorsal view.
FIGURE 18. Porcellanella haigae Sankarankutty, 1963 in The Porcellanidae (Crustacea: Decapoda: Anomura) of the Red Sea with description of a new species of Petrolisthes
FIGURE 18. Porcellanella haigae Sankarankutty, 1963, juvenile, Indonesia, Moluccas, Kaitetu, Rumphius Biohistorisch Expeditie 1990, Naturalis, Leiden. (a) Carapace, dorsal view. (b) Left cheliped, ventral view. (c) First walking leg, dorsal view.
FIGURE 17. Polyonyx triunguiculatus Zehntner, 1894 in The Porcellanidae (Crustacea: Decapoda: Anomura) of the Red Sea with description of a new species of Petrolisthes
FIGURE 17. Polyonyx triunguiculatus Zehntner, 1894, male, Seychelles, Indian Ocean, Tyro Seychelles expedition 1992/93, Naturalis, Leiden.
FIGURE 3 in A new subtidal species of the genus Petrolisthes Stimpson, 1858 (Crustacea: Decapoda: Porcellanidae) from Okinawa, with an account of species of the genus known from the Ryukyu Islands, southwestern Japan
FIGURE 3. Petrolisthes uruma sp. nov., holotype, ovigerous female (cl 8.3 mm), RUMF-ZC 2121. Fresh specimen. A, entire animal, dorsal view (right second and left fourth pereopods missing); B, same, ventral view.
FIGURE 2 in A new subtidal species of the genus Petrolisthes Stimpson, 1858 (Crustacea: Decapoda: Porcellanidae) from Okinawa, with an account of species of the genus known from the Ryukyu Islands, southwestern Japan
FIGURE 2. Petrolisthes uruma sp. nov., holotype, ovigerous female (cl 8.3 mm), RUMF-ZC 2121. A, right cheliped, dorsal view (short plumose setae on ridges omitted); B, same, ventral view (short plumose setae on ridges omitted); C, left second pereopod, lateral view (short plumose setae on ridges of merus mostly omitted); D, same, distal part of merus, mesial view; E, same, dactylus and distal part of propodus, lateral view (setae omitted); F, left third pereopod, lateral view (setae omitted); G, right fourth pereopod, lateral view (long stiff setae on merus only illustrated). Scales equal 1.0 mm.
FIGURE 1 in A new subtidal species of the genus Petrolisthes Stimpson, 1858 (Crustacea: Decapoda: Porcellanidae) from Okinawa, with an account of species of the genus known from the Ryukyu Islands, southwestern Japan
FIGURE 1. Petrolisthes uruma sp. nov., holotype, ovigerous female (cl 8.3 mm), RUMF-ZC 2121. A, carapace and ocular and antennal peduncles, dorsal view (setae omitted from right side); B, rostrum, anterodorsal view; C, third and fourth thoracic sternites, ventral view (setae omitted from left side); D, telson, external view; E, basal article of left antennular peduncle, ventral view; F, anterior part of carapace and left ocular and antennal peduncles, dorsal view; G, second to fourth articles of left antennal peduncle and anterior part of pterygostomial flap, ventral view; H, left third maxilliped, lateral view (exopod not illustrated, ventral long setae omitted). Scales equal 1.0 mm.
FIGURE 1. Petrolisthes tuerkayi n in A new species of porcelain crab, Petrolisthes tuerkayi n. sp. (Crustacea: Anomura: Porcellanidae), from the Persian Gulf
FIGURE 1. Petrolisthes tuerkayi n. sp., holotype. A, right cheliped, outer surface; B, carapace, posterior surface; C, first walking leg, posterior view; D, second walking leg, posterior view; E, third walking leg, posterior view; F, thoracic sternum; G, side wall of carapace.
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