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31 results for “Histiotus”
Figure 7 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 7. Simplified phylogeny of Eptesicus, Cnephaeus, Histiotus, and Neoeptesicus, modified from Yi and Latch (2022). Authorship of Eptesicus image: Dr. Burton Lim.
Figure 4 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 4. Plot of multivariate individual scores of New World Eptesicus (red), Old World Eptesicus (blue), and Histiotus (black) in the first two canonical variates: (A) canonical variates considering the effect of size; (B) "size-free" canonical variate using Mosimann shape variables. Analyses were performed using 16 cranial measurements.
Figure 3 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 3. (A) Plot of multivariate individual scores of New World Eptesicus (Red), Old World Eptesicus (Blue), and Histiotus (Black) in the first two principal components. Analysis was performed using 16 cranial measurements. (B) Vector correlations of craniometric characters with the first two principal components eigenvectors. See Table 1 for abbreviations.
Figure 5 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 5. Vector correlations of craniometric characters with the first two eigenvectors of the canonical variates: (A) canonical variate considering the effect of size; (B) "size-free" canonical variate using Mosimann shape variables. See Table 1 for abbreviations.
Figure 2 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 2. Lateral, dorsal, and ventral views of the skull of representatives of the type species of Histiotus (H. velatus [MACN 16808]; A, B, C), the type species of Eptesicus (E. fuscus [MACN 13407]; D, E, F), the first described Old World species of Eptesicus (E. serotinus [MACN 35.178]; G, H, I), and a representative of small Neotropical Eptesicus (E. andinus [AMNH 33807, holotype]; J, K, L). Arrows 1 and 4 indicate the auditory bullae; arrow 2 indicates the postorbital process of the jugal bone; arrow 3 indicates the frontal slope. Scale bars: 5 mm.
Figure 1 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 1. Representatives of New World Eptesicus: (A) Eptesicus taddeii and (B) Eptesicus fuscus; Histiotus: (C) Histiotus velatus; and Old World Eptesicus: (D) Eptesicus serotinus. Authorship of images: (B) Dr. Burton Lim and (D) Adrià López-Baucells, http://www.batmonitoring.org.
Figure 6 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 6. (A) plot of multivariate individual scores of New World Eptesicus (red and blue), and Histiotus (black) in the first two canonical variates; analysis was performed using 16 cranial measurements. (B) Vector correlations of craniometric characters with the first two canonical variates. See Table 1 for abbreviations.
Figure 7 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 7. Simplified phylogeny of Eptesicus, Cnephaeus, Histiotus, and Neoeptesicus, modified from Yi and Latch (2022). Authorship of Eptesicus image: Dr. Burton Lim.
Figure 6 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 6. (A) plot of multivariate individual scores of New World Eptesicus (red and blue), and Histiotus (black) in the first two canonical variates; analysis was performed using 16 cranial measurements. (B) Vector correlations of craniometric characters with the first two canonical variates. See Table 1 for abbreviations.
Figure 5 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 5. Vector correlations of craniometric characters with the first two eigenvectors of the canonical variates: (A) canonical variate considering the effect of size; (B) "size-free" canonical variate using Mosimann shape variables. See Table 1 for abbreviations.
Figure 3 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 3. (A) Plot of multivariate individual scores of New World Eptesicus (Red), Old World Eptesicus (Blue), and Histiotus (Black) in the first two principal components. Analysis was performed using 16 cranial measurements. (B) Vector correlations of craniometric characters with the first two principal components eigenvectors. See Table 1 for abbreviations.
Figure 4 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 4. Plot of multivariate individual scores of New World Eptesicus (red), Old World Eptesicus (blue), and Histiotus (black) in the first two canonical variates: (A) canonical variates considering the effect of size; (B) "size-free" canonical variate using Mosimann shape variables. Analyses were performed using 16 cranial measurements.
Figure 1 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 1. Representatives of New World Eptesicus: (A) Eptesicus taddeii and (B) Eptesicus fuscus; Histiotus: (C) Histiotus velatus; and Old World Eptesicus: (D) Eptesicus serotinus. Authorship of images: (B) Dr. Burton Lim and (D) Adrià López-Baucells, http://www.batmonitoring.org.
Figure 2 in Taxonomic re-evaluation of New World Eptesicus and Histiotus (Chiroptera: Vespertilionidae), with the description of a new genus
Figure 2. Lateral, dorsal, and ventral views of the skull of representatives of the type species of Histiotus (H. velatus [MACN 16808]; A, B, C), the type species of Eptesicus (E. fuscus [MACN 13407]; D, E, F), the first described Old World species of Eptesicus (E. serotinus [MACN 35.178]; G, H, I), and a representative of small Neotropical Eptesicus (E. andinus [AMNH 33807, holotype]; J, K, L). Arrows 1 and 4 indicate the auditory bullae; arrow 2 indicates the postorbital process of the jugal bone; arrow 3 indicates the frontal slope. Scale bars: 5 mm.
Systematics of the New World bats Eptesicus and Histiotus suggest trans-marine dispersal followed by Neotropical cryptic diversification
<p>Biodiversity can be boosted by colonization of new habitats, such as different continents and remote islands. Molecular studies have suggested that recently evolved organisms probably colonized already separated continents by dispersal, either via land bridge connections or crossing the ocean. Here we test the on-land and trans-marine dispersal hypotheses by evaluating possibilities of colonization routes over Bering land bridge and across the Atlantic Ocean in the cosmopolitan bat genus <em>Eptesicus</em> (Chiroptera, Vespertilionidae). Previous molecular studies have found New World <em>Eptesicus</em> more closely related to <em>Histiotus</em>, a Neotropical endemic lineage with enlarged ears, than to Old World <em>Eptesicus</em>. However, phylogenetic relationships within the New World group remained unresolved and their evolutionary history was unclear. Here we studied the systematics of New World <em>Eptesicus</em> and <em>Histiotus</em> using extensive taxonomic and geographic sampling, and genomic data from thousands of ultra-conserved elements (UCEs). We estimated phylogenetic trees using concatenation and multispecies coalescent. All analyses supported four major New World clades and a novel topology where <em>E. fuscus</em> and <em>Histiotus</em> are sister clades that together diverged from two sister clades of Neotropical <em>Eptesicus</em>. Intra-clade divergence suggested cryptic diversity that has been concealed by morphological features, especially in the Neotropics where taxonomic re-evaluations are warranted. Molecular dating estimated that Old World and New World clades diverged around 17 million years ago followed by radiation of major New World clades in the mid-Miocene, when climatic changes might have facilitated global dispersal and radiation events. Biogeographic ancestral reconstruction supported the Neotropical origin of the New World clades, suggesting a trans-Atlantic colonization route from North Africa to the northern Neotropics. We highlight that trans-marine dispersal may be more prevalent than currently acknowledged and may be an important first step to global biodiversification.</p>
Systematics of the New World bats Eptesicus and Histiotus suggest trans-marine dispersal followed by Neotropical cryptic diversification
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FIGURE 9 in New species of Histiotus (Chiroptera: Vespertilionidae) from northeastern Brazil
FIGURE 9. Scatter plot of the first and second principal components of the 15 cranial measurements of Histiotus humboldti, H. montanus, H. diaphanopterus and H. velatus.
FIGURE 7 in New species of Histiotus (Chiroptera: Vespertilionidae) from northeastern Brazil
FIGURE 7. Diagnostic external traits for the differentiation of H. diaphanopterus (left—holotype UFPB 9490) and H. velatus (right—FURB-SLA 2466). 1. Dorsal hair; 2. Color and translucence of the ear and wings.
FIGURE 6 in New species of Histiotus (Chiroptera: Vespertilionidae) from northeastern Brazil
FIGURE 6. Live individuals of Histiotus diaphanopterus showing the diagnostic traits. 1. high band across the forehead; 2. prominent lobe in the inner border of ear; 3. long, triangular tragus; 4. triangular shape of the pale ear; 5. wings attached to the base of the outer toe; 6. ear ridges.
FIGURE 4 in New species of Histiotus (Chiroptera: Vespertilionidae) from northeastern Brazil
FIGURE 4. Localities recorded for Histiotus diaphanopterus in relation to the principal types of vegetation found in South America and main rivers (dotted lines). 1. Boqueirão da Onça, Sento Sé, Bahia, Brazil (type locality); 2. Fazenda Almas Private Natural Heritage Reserve, São José dos Cordeiros, Paraíba, Brazil; 3. Fortaleza, Ceará, Brazil; 4. Tranqueira, Maranhão, Brazil; 5. Pampagrande, Florida, Santa Cruz, Bolivia.
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