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276 results for “northeastern Mexico”
FIGURE 14. Pseudomacrinella larseni n in New deep-sea Paratanaoidea (Crustacea: Peracarida: Tanaidacea) from the northeastern Gulf of Mexico
FIGURE 14. Pseudomacrinella larseni n. sp., adult female. A, pereopod-1; B, pereopod-2; C, pereopod-3; D, pereopod-4; E, propodus and dactylus of pereopod-4; F, pereopod-5; G, pereopod-6; H, pleotelson and uropods (ventral). Subadult male. I, pleopod. Scale bars = 0.05 mm.
FIGURE 11. Crenicarpus n. gen. secundus n in New deep-sea Paratanaoidea (Crustacea: Peracarida: Tanaidacea) from the northeastern Gulf of Mexico
FIGURE 11. Crenicarpus n. gen. secundus n. sp., manca-II. A, habitus (dorsal view); B, antennule; C, antenna; D, labrum; E, maxilliped; F, cheliped (outer); G, carpus, propodus, and dactylus of cheliped (outer); H, basis, merus, carpus, propodus, and dactylus of cheliped (inner). Scale bars: A = 0.5 mm; B, C = 0.05 mm; E = 0.03 mm; F, H = 0.1 mm.
FIGURE 12. Crenicarpus n. gen. secundus n in New deep-sea Paratanaoidea (Crustacea: Peracarida: Tanaidacea) from the northeastern Gulf of Mexico
FIGURE 12. Crenicarpus n. gen. secundus n. sp., manca-II. A, pereopod-1; B, pereopod-2; C, pereopod-3; D, pereopod-4; E, pereopod-5; F, uropod. Scale bars: A–E = 0.1 mm; F = 0.03 mm.
FIGURE 4. A–D in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 4. A–D, Opisthopus transversus Rathbun, 1918 from Punta San Miguel, Todos Santos Bay, Ensenada, Baja California, Mexico. E-H, Pinnotheres nudus Holmes, 1895, from Santa Cruz, California, U.S.A. Adult female: A, E, carapace, dorsal view; B, F, abdomen; C, G, right and left cheliped respectively, outer aspect; D, H, third maxilliped, outer view. A–C, scale 1: 0.5 mm; 2: 0.1 mm; E–H, not to scale.
FIGURE 3. A–E in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 3. A–E, Pinnaxodes gigas Green, 1992, A, near San Quintín, Baja California, Mexico; B–E, San Felipe, Baja California, Mexico: adult female A, dorsal view, carapace width 28.4 mm; adult male, B, carapace, dorsal view; C, third maxilliped, outer view; D, abdomen; E, pereiopods 3–5 (ambulatory legs 2–4). Opisthopus transversus Rathbun, 1893 adult male, Ensenada, Baja California, Mexico: F, carapace, dorsal view; G, third maxilliped, outer view; H, abdomen; I, pereiopods 3–5 (ambulatory legs 2–4). Scale 1: B, 3.4 mm; C, 0.4 mm; F, 1.27 mm; G, 0.36 mm. Scale 2: D, 1.46; E, 2.17; H, 0.73; I, 1.27.
FIGURE 5. A–B in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 5. A–B, Tumidotheres orcutti (Rathbun, 1918) from Cabo Blanco Is., Costa Rica, female (MUCR 2220–11). A, cheliped, outer view; B. tip of cheliped; scale: 1 mm. C–D Tumidotheres margarita (Smith, 1870) from Magdalena Bay, Baja California Sur, Mexico: C–D, cheliped, outer view, female and male respectively. Not to scale.
FIGURE 1. A–C, E in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 1. A–C, E, Fabia subquadrata Dana, 1851 from Todos Santos Bay, Ensenada, Baja California, Mexico: A, Female dorsal view, carapace width 6.7 mm; B–C, third maxilliped of female, carapace width 18.3 mm, inner and outer view respectively; F, male abdomen, carapace width 9.5 mm, dots indicate the area covered by setae. D–E, F. c o nc h ar u m (Rathbun, 1853) from California, U.S.A.: D, third maxilliped outer view, x 30; E, male abdomen, x 15. C–D after Davidson (1968).
FIGURE 2. A in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 2. A, Fabia cocharum (Rathbun, 1853), female showing one line of setae on the ventral margin of the propodus, carapace width 13.4, San Vicente, Ensenada, Baja California, Mexico; B, F. subquadrata Dana, 1851, female showing two lines of setae, one submarginal and second on ventral margin of the propodus, carapace width 6.7 mm, Todos Santos Bay, Ensenada, Baja California, Mexico.
Two new species of Aphyllon from northeastern Mexico: Sequence alignments and phylogenetic trees
<p>Plants originally identified as <em>Aphyllon ludovicianum</em> that occur near Monterrey, Nuevo Leon, and Cuatro Ciénegas Bolson, Coahuila, Mexico, were found to not align with the protologue of that species, the close relative <em>A. multiflorum,</em> or any other species of <em>Aphyllon</em>. Following a detailed study of floral morphology, geographic range, host species, and phylogenetic position using dry herbarium specimens, field study and georeferenced color photographs, we propose the new binomials <em>Aphyllon spectabile </em>for the plants from Nuevo Leon and <em>Aphyllon gypsophilum</em> for the plants from Coahuila, Mexico. This increases the taxonomic diversity of <em>Aphyllon</em> to 27 species plus ten additional subspecies. <em>Gymnosperma glutinosum</em> and two species of <em>Xanthisma</em> were reported for the first time as a host species for the genus <em>Aphyllon</em>. We also provide an updated key to <em>Aphyllon</em> in Mexico. </p>
FIGURE 3 in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico
FIGURE 3. SEM images of Spinopyrgus luismaedai n. gen. et n. sp. (L–P). L. Specimen (UJMC-255) from El Molino spring with strong spines. M. Specimen (UJMC-255) apical view. N. Specimen (UJMC-256), protoconch. O. Specimen (UJMC-255), details of the strong axial elements of the body whorl. P. Specimen (UJMC-256) from Juan Guerra spring, protoconch. Q-T. Pyrgophorus parvulus (Guilding) from Río Sabinas, Coahuila, Mexico (from Czaja et al. 2022, Fig. 5A). Q, R. Specimen (UJMC 460a) from Río Sabinas from both sides. S. Same specimen with details of the spiral elements of the body whorl. T. Same specimen (UJMC 460a), protoconch.
FIGURE 2. Spinopyrgus luismaedai n. gen. et n in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico
FIGURE 2. Spinopyrgus luismaedai n. gen. et n. sp. (A–K). A–B. Holotype (UJMC-250) from Juan Guerra spring. C. Paratype 1 (UJMC-251) from Juan Guerra spring. D. Paratype 2 (UJMC-252) from Juan Guerra spring. E, F. Paratype 3 (UJMC-252a) from Juan Guerra spring, specimen with three keels. G. Specimen (UJMC-253) from El Molino spring. H. Specimen (UJMC- 254) from Juan Guerra spring. I. Specimen (UJMC-253) from El Molino spring, protoconch view. J. Paratype 3 (UJMC-251), details of the carina with spines. K. Specimen (UJMC-253b) from El Molino spring, details of the carina with shovel-shaped spines.
FIGURE 1 in A new freshwater snail genus and species (Gastropoda: Caenogastropoda, Cochliopidae) with extremely spinous shells from sub-recent spring deposits in northeastern Mexico
FIGURE 1. Study area showing the locations of the Viesca springs. The scale bar refers to the map with the springs marked. The topography is illustrated using HillShade in ArcGIS.
FIGURES 16–21 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURES 16–21. Morphology of Aphonopelma bacadehuachi, sp. nov. from Sonora, Mexico (female paratype, APH-1356). 16, carapace, dorsal view; 17, right pedipalp, prolateral view; 18, coxa of right leg I, prolateral view; 19, spermathecae; 20, metatarsus and tarsus of left leg III, ventral view; 21, metatarsus and tarsus of left leg IV, ventral view. Scale bar = 5 mm (except for spermathecae, scale bar = 2 mm).
FIGURE 22 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 22. Map of the southwestern United States and northwestern Mexico showing the distributions of the Madrean members of the Marxi species group and Aphonopelma mooreae. The localities for A. mooreae are based on reports provided in iNaturalist (https://www.inaturalist.org/observations?taxon_id=264079, accessed 16 March 2019). The distribution for A. peloncillo only reflects specimens from the eastern foothills of the Peloncillo Mountains and the Animas Valley in New Mexico and does not include several specimens outside of this area as reported in Hamilton et al. (2016); further research is necessary to confirm the identity of the latter specimens. State abbreviations: AZ = Arizona, NM = New Mexico, SON = Sonora, CHI = Chihuahua. The Madrean pine-oak woodlands shapefile was "exploded" from a larger shapefile depicting the planet's biodiversity hotspots (downloaded from http://legacy.cepf.net/SiteAssets/hotspots_2016_1.zip, accessed 16 March 2019).
FIGURE 3–4 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 3–4. Dorsal habitus of Aphonopelma bacadehuachi, sp. nov. from Sonora, Mexico. 3, male holotype (APH-1357); 4, female paratype (APH-1356). Scale bar = 20 mm.
FIGURE 2 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 2. Maximum likelihood phylogeny of the Madrean members of the Marxi species group based on COX1 mtDNA. For presentation sake, specimen labels have been removed from the tree tips. Numbers along branches indicate maximum likelihood bootstrap support values. Photograph is an adult male Aphonopelma madera from the Huachuca Mountains in southeastern Arizona.
FIGURES 5–15 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURES 5–15. Morphology of Aphonopelma bacadehuachi, sp. nov. from Sonora, Mexico (male holotype, APH-1357). 5, carapace, dorsal view; 6, patella and tibia of left leg I, prolateral view; 7, tibial apophysis of left leg I, prolateral view; 8, metatarsus and tarsus of left leg III, ventral view; 9, metatarsus and tarsus of left leg IV, ventral view; 10, left pedipalp, retrolateral view; 11, left pedipalp, prolateral view; 12, femur of leg III, dorsal view; 13, palpal bulb, prolateral view; 14, palpal bulb, retrolateral view; 15, palpal bulb, dorsal view. Scale bar = 5 mm (except for palpal bulb and illustration of tibial apophysis, scale bar = 2 mm).
FIGURE 1 in A new species of Aphonopelma (Araneae: Mygalomorphae: Theraphosidae) from the Madrean pine-oak woodlands of northeastern Sonora, Mexico
FIGURE 1. Scatterplot of principal components for measurements of mature male (top) and female (bottom) Madrean Aphonopelma species. Percentage values indicate the proportion of variation explained by a particular principal component (PC1 and PC2).
Data from: Magnolia nuevoleonensis sp. nov. (Magnoliaceae) from northeastern Mexico and a key to species of section Macrophylla
We describe and illustrate Magnolia nuevoleonensis A. Vázquez & Domínguez-Yescas, a new deciduous tree species that belongs to M. sect. Macrophylla Figlar & Nooteboom. It is morphologically similar to M. ashei Weath., but differs from the latter in being a larger tree, with smaller flowers, larger and broadly ovoid (vs cylindrical to ellipsoid) fruits, prominently beaked (vs shortly beaked) carpels, and firm and short (vs flexible and elongated) styles.
Fig. 1 in Species Assemblage of Carrion Beetles (Coleoptera: Scarabaeidae, Silphidae, Trogidae) in Three Habitats in the Northeastern Region of Aguascalientes, Mexico
Fig. 1. Location of the study area Aguascalientes, Mexico and carrion traps. a) Geographic location of the study area, b) Sampling sites (encircled): Xerophytic scrub 1 and 2 (XS1, XS2); riparian forest (RF); and agricultural land (AL).
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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