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5,879 results for “Curculionidae”
Figures 1–2. Erebaces woodruffi. 1 in A second species of the genus Erebaces Pascoe, 1871 (Curculionidae: Molytinae: Cryptorhynchini) from the Philippines
Figures 1–2. Erebaces woodruffi. 1) Dorsal habitus. 2) Lateral habitus.
Population differentiation and intraspecific genetic admixture in two Eucryptorrhynchus weevils (Coleoptera: Curculionidae) across northern China
<p><span>Inreasing damage of pests in agriculture and forestry can arise both as a consequence of changes in local species and through the introduction of alien species. In this study, we used population genetics approaches to examine population processes of two pests of the tree-of-heaven trunk weevil (TTW), <em>Eucryptorrhynchus brandti</em> (Harold) and the tree-of-heaven root weevil (TRW), <em>E. scrobiculatus</em> (Motschulsky) on the tree-of-heaven across their native range of China. We analyzed the population genetics of the two weevils based on ten highly polymorphic microsatellite markers. Population genetic diversity analysis showed strong population differentiation among populations of each species, with FST ranges from 0.0197 to 0.6650 and from -0.0724 to 0.6845, respectively. Populations from the same geographical areas can be divided into different genetic clusters, and the same genetic cluster contained populations from different geographical populations, pointing to dispersal of the weevils possibly being human-mediated. Redundancy analysis showed that the independent effects of environment and geography could account for 93.94% and 29.70% of the explained genetic variance in TTW, and 41.90% and 55.73% of the explained genetic variance in TRW, respectively, indicating possible impacts of local climates on population genetic differentiation. Our study helps to uncover population genetic processes of these local pest species with relevance to control methods.</span></p>
Fig. 3 in Genetic Differentiation Of Ukrainian Populations Of Eusomus Ovulum (Coleoptera, Curculionidae): Evidence Of Multiple Hybrid Speciation
Fig. 3. Polyclonal structure of studied Eusomus ovlulum samples inUkraine.
Fig. 2 in Genetic Differentiation Of Ukrainian Populations Of Eusomus Ovulum (Coleoptera, Curculionidae): Evidence Of Multiple Hybrid Speciation
Fig. 2. The electrophoretic spectra of the esterases in the Eusomus ovulum specimens.
Fig. 1 in Genetic Differentiation Of Ukrainian Populations Of Eusomus Ovulum (Coleoptera, Curculionidae): Evidence Of Multiple Hybrid Speciation
Fig. 1. Geographic localization of Eusomus ovulum samples.
New non-native pseudocryptic Cyclorhipidion species (Coleoptera: Curculionidae: Scolytinae: Xyleborini) found in the United States as revealed in a multigene phylogeny
<p>Pseudocryptic species, those that are difficult to diagnose using traditional taxonomic methods, are serious impediments for recognizing the introduction of non-native species. Rapid identification of species facilitates a rapid response to newly introduced species which can lessen their damaging effects. This situation is acute for known pest species such as xyleborine ambrosia beetles which are difficult to identify given minute morphological, often variable, diagnostic characters. These beetles have been introduced into non-native temperate regions and have caused economic and ecological havoc. In this study, we produced DNA-based phylogenies using four genes for individuals of <em>Cyclorhipidion bodoanum</em> (Reitter, 1913)<em>, C. distinguendum </em>(Eggers, 1930), and <em>C. pelliculosum </em>(Eichhoff, 1878) sampled from their introduced and native Asian ranges and as well as other <em>Cyclorhipidion </em>species. In addition, we review subtle morphological characters for diagnostic potential for these similar species. Bayesian phylogenetic analysis produced well-resolved and supported phylogeny that provided evidence for multiple introductions of <em>C. bodoanum and C. distinguendum</em> into the US and the occurrence of pseudocryptic species. The ambrosia beetles <em>Cyclorhipidion tenuigraphum </em>(Schedl, 1953)<em> </em>and<em> C. nemesis </em>Smith & Cognato, sp. nov. are reported in North America for the first time. We find that the pattern of elytral interstrial setae is an unrealized source for the identification of <em>Cyclorhipidion</em> species. This study resulted in the recognition of six species adventive to the US with the revised status of <em>C. californicum</em> (Wood, 1975). All species known from North American are diagnosed, illustrated and a key is provided.</p>
New xyleborine (Coleoptera: Curculionidae: Scolytinae) genus with an Afrotropical-Neotropical distribution
<p>Plant-associated arthropods have been shown to cross large oceanic distances on floating plant material and to establish themselves on distant landmasses. Xyleborini (Coleoptera: Curculionidae: Scolytinae) ambrosia beetles occur in forests worldwide and are likely capable of long range dispersal. In less than 20 million years, this group dispersed from Asia to tropical regions of Africa and South America. The phylogeny, taxonomy, and biogeography of one <em>Xyleborus </em>species group which occurs on both continents are reviewed for this study. Based on a well-resolved molecular phylogeny resulting from parsimony, likelihood, and Bayesian analyses of four gene loci, we describe a new monophyletic genus, <em>Xenoxylebora </em>Osborn, Smith & Cognato, gen. nov., for this bicontinental <em>Xyleborus </em>species group with seven Afrotropical and six Neotropical species. Six new species are described: <em>Xenoxylebora pilosa </em>Osborn, Smith & Cognato, sp. nov. from Africa, and <em>Xenoxylebora addenda </em>Osborn, Smith & Cognato, sp. nov., <em>Xenoxylebora calculosa </em>Osborn, Smith & Cognato, sp. nov., <em>Xenoxylebora hystricosa</em> Osborn, Smith & Cognato, sp. nov., <em>Xenoxylebora serrata </em>Osborn, Smith & Cognato, sp. nov., and <em>Xenoxylebora sulcata </em>Osborn, Smith & Cognato, sp. nov., from South America. Seven new combinations from <em>Xyleborus </em>are proposed: <em>Xenoxylebora caudata</em> (Schedl, 1957) comb. nov., <em>Xenoxylebora collarti</em> (Eggers, 1932) comb. nov., <em>Xenoxylebora perdiligens</em> (Schedl, 1937) comb. nov., <em>Xenoxylebora sphenos</em> (Sampson, 1912) comb. nov., <em>Xenoxylebora subcrenulata</em> (Eggers, 1932) comb. nov., and <em>Xenoxylebora syzygii</em> (Nunberg, 1959) comb. nov. from Africa, and<em> Xenoxylebora neosphenos</em> (Schedl, 1976) comb. nov. from South America. One new synonym is proposed: <em>Xenoxylebora sphenos </em>(Sampson, 1912) =<em>Xyleborus tenellus </em>Schedl, 1957 syn. nov. Descriptions, diagnoses, images, and a key to the identification of all 13 species are provided. The sequence of colonization between Africa and South America is uncertain for <em>Xenoxylebora</em>. Prevailing ocean currents and predominant locality patterns observed for other organisms suggests an African <em>Xenoxylebora</em> origin. However, the phylogeny, biogeographical analyses, and a calibrated divergence time suggests a possible South American origin for African <em>Xenoxylebora</em> (2.3 Ma, 95% HDP 4.5 – 0.6 Ma) which is supported by the occurrence of ocean counter currents between the continents and evidence of dispersal from South America to Africa among some plant and arthropod taxa. </p>
How the Easter Egg Weevils got their spots: Phylogenomics reveals Müllerian mimicry in Pachyrhynchus (Coleoptera, Curculionidae)
<p>The evolutionary origins of mimicry in the Easter Egg weevil, <em>Pachyrhynchus</em>, have fascinated researchers since first noted more than a century ago by Alfred Russel Wallace. Müllerian mimicry, or mimicry in which two or more distasteful species look similar, is widespread throughout the animal kingdom. Given the varied but discrete color patterns in <em>Pachyrhynchus</em>, this genus presents one of the best opportunities to study the evolution of both perfect and imperfect mimicry. We analyzed more than 10,000 UCE loci using a novel partitioning strategy to resolve the relationships of closely related species in the genus. Our results indicate that many of the mimetic color patterns observed in sympatric species are due to convergent evolution. We suggest that this convergence is driven by positive frequency-dependent selection.</p>
Fig. 8 in A new species of the genus Synommatus Wollaston, 1873 (Coleoptera: Curculionidae) from the Philippines
Fig. 8. Distribution-map of the genus Synommatus: circle – S. interruptus, rhombus – S.
Figs 1–4 in A new species of the genus Synommatus Wollaston, 1873 (Coleoptera: Curculionidae) from the Philippines
Figs 1–4. Synommatus leleji sp. n., holotype, male: 1 – habitus, dorsal view; 2 – the same,
Fig. 9 in Microsculpture and chaetotaxy of abdominal tergites of bark and ambrosia beetles (Coleoptera: Curculionidae, Scolytinae): morphology and nomenclature
Fig. 9. Elements of chaetom and microsculpture of abdominal tergites of Scolytinae. a –
Fig. 8 in Microsculpture and chaetotaxy of abdominal tergites of bark and ambrosia beetles (Coleoptera: Curculionidae, Scolytinae): morphology and nomenclature
Fig. 8. Elements of chaetom and microsculpture of abdominal tergites of Scolytinae. a –
Fig. 11 in Microsculpture and chaetotaxy of abdominal tergites of bark and ambrosia beetles (Coleoptera: Curculionidae, Scolytinae): morphology and nomenclature
Fig. 11. Microscuptural fields and chaetom of Scolytinae (glass slides). a – Camptocerus
Figs 1–7 in Microsculpture and chaetotaxy of abdominal tergites of bark and ambrosia beetles (Coleoptera: Curculionidae, Scolytinae): morphology and nomenclature
Figs 1–7. Microscuptural fields and chaetom elements of Scolytinae. 1, 6 – Hylurgus
Fig. 10 in Microsculpture and chaetotaxy of abdominal tergites of bark and ambrosia beetles (Coleoptera: Curculionidae, Scolytinae): morphology and nomenclature
Fig. 10. Different setae of tergite 7 of Scolytinae. n – feathery furcate; d – feathery; a –
Fig. 5 in A new genus of the subtribe Geochina (Coleoptera: Curculionidae) from the Philippines
Fig. 5. Distribution of the subtribe Geochina: octagon – Orientogeochus rheinheimeri,
Figs 1–4 in A new genus of the subtribe Geochina (Coleoptera: Curculionidae) from the Philippines
Figs 1–4. Orientogeochus rheinheimeri sp. n., holotype female, habitus. 1 – dorsal view;
Figs 1–4 in NEW SPECIES AND NEW SUBGENUS OF THE GENUS COTASTEROMIMUS CHÛJÔ ET VOSS, 1960 (COLEOPTERA: CURCULIONIDAE) FROM THE PHILIPPINES
Figs 1–4. Cotasteromimus (Cotasterorhinus) philippinensis sp. n. 1 – holotype, habitus,
Fig. 9 in A new species of the genus Neolaemosaccus Hustache, 1937 (Coleoptera: Curculionidae) from the Philippines
Fig. 9. Distribution of Neolaemosaccus spp.: Fig. 10. Distribution of Neo-
Figs. 1–8 in A new species of the genus Neolaemosaccus Hustache, 1937 (Coleoptera: Curculionidae) from the Philippines
Figs. 1–8. Neolaemosaccus luzonensis: 1 – holotype, habitus, dorsal view; 2 – paratype,
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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