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46 results for “Sylvicanthon”
Fig. 23 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 23. Sylvicanthon foveiventris (Schmidt, 1920). A. Dorsal view. B. Ventral view. C. S. foveiventris type material: a. Lectotype. b. Lectotype's labels. c. Paralectotype 1's label. d. Paralectotype 6's labels.
Fig. 14. A in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 14. A. Ventral view of the anterior region of the pterothorax of S. proseni (Martínez, 1949) stat. et comb. nov. Abbreviations: MsEs = mesoventrite; SEs = meso-metaventrite suture; MsC = mesocoxa; RAMtEs = anterior region of metaventrite. B–E. Sexual dimorphism in the abdominal ventrites of Sylvicanthon Halffter & Martínez, 1977. B. S. foveiventris (Schmidt, 1920), ♀. Note the three lateral foveae between ventrites I–II, II–III, and III–IV and the broad ventrite VI at the middle, without emargination on its posterior edge and without its anterior edge covered by a medial flange of ventrite V. C. S. proseni stat. et comb. nov., ♀, ventrite VI broad. D. S. candezei (Harold, 1869), ♂. Note how the ventrite VI is narrow at the middle due to the emargination on its porterior edge and to the medial flage of the posterior edge of the ventrite V. E. S. candezei (Harold, 1869), ♀. Despite its posterior edge not being emarginate, its anterior edge is covered by a well-developed medial flange of ventrite V, which gives a narrowed aspect to the centre of ventrite VI.
Fig. 9. A in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 9. A. Sylvicanthon bridarollii (Martínez, 1949), profemur. Note that, as occurs in the other species of the candezei group, there is no denticulation on the anterior edge, which is, by contrast, completely smooth. B. S. enkerlini (Martínez et al., 1964) comb. nov., profemur. Arrow indicates the denticulation of anterior edge, a condition present in both sexes and unique in the genus. C. S. enkerlini, metepisternum. Arrow indicates the small tubercle at the suture between metepisternum and the lateral region of metaventrite. D. S. enkerlini, hypomeron. Notice the row of long setae present on the lateral of posterior region, a condition seen uniquely in this species in Sylvicanthon.
Fig. 8. Head, ventral view. A in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 8. Head, ventral view. A. Sylvicanthon bridarollii (Martínez, 1949). B. S. proseni (Martínez, 1949) stat. et comb. nov. See the differences in the shape of the suture between submentum and gula in these two species (red arrows), which is rounded in S. bridarollii and most of the other species of Sylvicanthon, while it has a 'Y'-shape in the two representants of the aequinoctialis subgroup.
Fig. 33 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 33. Sylvicanthon bridarollii (Martínez, 1949) type material. A. Holotype and its labels. B. Allotype and its labels.
Fig. 6. Head, dorsal view. A in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 6. Head, dorsal view. A. Sylvicanthon enkerlini (Martínez et al., 1964) comb. nov. B. S. candezei (Harold, 1869). C. S. genieri sp. nov. D. S. proseni (Martínez, 1949) stat. et comb. nov. E. S. seag sp. nov. F. S. securus (Schmidt, 1920) comb. nov. G. S. furvus (Schmidt, 1920).
Fig. 4 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 4. The three scarab beetle specialists responsible for the intense period of taxonomic activity that 'Canthon sensu lato' passed through during the 1940s–1970s. Throughout that period and through tens of papers, the former concept of the genus Canthon Hoffmannsegg, 1817 was divided into several genera and subgenera, including Sylvicanthon Halffter & Martínez, 1977, published in the last work of that series. A. The Brazilian cleric, Padre Francisco Silvério Pereira, CMF (1913–1991) (image courtesy of Everardo Grossi and Brett Ratcliffe). B. The Argentinian entomologist Antonio Martínez (1922– 1993) (modified from Fritz 1994). C. The Mexican entomologist Gonzalo Halffter (b. 1932) (modified from Morrone 2015a).
Fig. 7. Pterothorax, ventrolateral views. A in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 7. Pterothorax, ventrolateral views. A. Sylvicanthon aequinoctialis (Harold, 1868) comb. nov. B. S. obscurus (Schmidt, 1920). C. Canthon xanthopus Blanchard, 1846. Abbreviations: MsC = mesocoxa; MMsC = external margin of mesocoxa; CMtE = centre of metaventrite; LMtE = lateral region of metaventrite; MtC = metacoxa.
Fig. 3 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 3. The two great revisers of Canthon Hoffmannsegg, 1817 in the first half of the 20th century. A. The German coleopterist Adolf Schmidt (1856–1923). After the publication of his two works on Scarabaeinae (Schmidt 1920, 1922), Canthon was composed of 143 valid species. Schmidt was the first author to recognize a group of species that, more than 50 years later, would constitute the core of the genus Sylvicanthon as proposed by Halffter & Martínez (1977). B. The Czech coleopterist Vladimír Balthasar (1897–1978), one of the first authors to recognize explicitly the great heterogeneity and artificiality of Canthon and to propose its division into several genera and subgenera. (Both images courtesy of Editha Schubert, from the archives of the Senckenberg Deutsches Entomologisches Institut.)
Fig. 2 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 2. The German coleopterist Edgar von Harold (1830–1886), one of the first specialists in scarab beetles and author of the only 19th century revision of Canthon Hoffmannsegg, 1817, in which 97 species were recognized as valid, 46 as new. Harold described two species today positioned in Sylvicanthon Halffter & Martínez, 1977: S. aequinoctialis (Harold, 1868) comb. nov. and S. candezei (Harold, 1869) (portrait courtesy of Editha Schubert, from the archives of the Senckenberg Deutsches Entomologisches Institut; title page of Harold's revision of Canthon scanned from an original copy housed at the first author's personal library).
Fig. 1 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 1. Authors who initiated the studies on 'Canthon sensu lato' in the first half of the 19th century. A. The German naturalist Johann Centurius Graf von Hoffmannsegg (1766–1849), author of the genus Canthon (image courtesy of Editha Schubert, from the archives of the Senckenberg Deutsches Entomologisches Institut). B. The French entomologist Pierre André Latreille (1762–1833), author of Ateuchus septemmaculatus Latreille, 1807, species treated in detail by Hoffmannsegg (1817) in his description of Canthon. Latreille was also the author of Coprobius, name considered valid for decades before being synonymized with Canthon by Harold (1868a) (image courtesy of the United States National Library of Medicine).
Fig. 5 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 5. Subdentate tarsal claws in different groups of dung beetles. The presence of this form of tarsal claw was seen as evidence for a close phylogenetic relationship between several groups of Scarabaeinae distributed over the continents of former Gondwana. A. Protarsal claws of Sylvicanthon proseni (Martínez, 1949) stat. et comb. nov. Red arrow indicates the basal agularity of the claw. B. Pseudocanthon vitraci (Fleutiaux & Sallé, 1889) (modified from Matthews 1966). C. Canthonella parva (Chapin, 1930) (modified from Halffter & Martínez 1967). D. Lepanus penelopae Matthews & Weir, 2002 (left) and L. loftyensis Matthews & Weir, 2002 (right) (modified from Matthews & Weir 2002). E. Oficanthon mirabilis Paulian, 1985 (modified from Paulian 1985).
Fig. 26 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 26. Sylvicanthon candezei (Harold, 1869) type material. A. a. Lectotype. b. Labels of lectotype. c. Labels of paralectotype 3. B. The four localities where S. candezei type series may have been collected by Bates in the lower Tapajós region in 1852 (see discussion in the text). C. The English naturalist Henry Walter Bates (1825–1892), the collector of the S. candezei type series (modified from Bidau 2014).
Fig. 19 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 19. Aedeagus morphological diversity in Sylvicanthon. A. S. securus (Schmidt, 1920) comb. nov. B. S. obscurus (Schmidt, 1920). C. S. furvus (Schmidt, 1920). D. S. monnei sp. nov. E. S. mayri sp. nov.
Fig. 22 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 22. Distribution of Sylvicanthon enkerlini (Martínez et al., 1964) comb. nov. Note that the species occupies transition zones between the Amazonia, Cerrado, Caatinga and Atlantic Forest biomes, regions much dryer and more open than the humid forests occupied by the species of the candezei group.
Fig. 17 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 17. Aedeagus morphological diversity in Sylvicanthon. A. S. enkerlini (Martínez et al., 1964) comb. nov. B. S. foveiventris (Schmidt, 1920). C. S. candezei (Harold, 1869) (arrows points to the ventral notch). D. S. genieri sp. nov. (idem). E. S. aequinoctialis (Harold, 1868). F. S. proseni (Martínez, 1949) stat. et comb. nov.
Fig. 37 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 37. Sylvicanthon seag sp. nov. A. Dorsal view of a bicolour specimen (present only on the banks of the Amazon River and in the Brazilian state of Maranhão). B. Dorsal view of a bluish specimen. C. Dorsal view of a greenish specimen. D. Ventral view of a greenish specimen.
Fig. 31 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 31. Metafemora of the two species of the aequinoctialis subgroup. A. Sylvicanthon aequinoctialis (Harold, 1868) comb. nov. B. S. proseni (Martínez, 1949) stat. et comb. nov. Arrow indicates the basal end of the posterior margin of the ventral face of metafemora (note that it is longer in S. aequinoctialis comb. nov. than in S. proseni stat. et comb. nov. and may exceed the trochanter in the first species).
Fig. 45. Canthon xanthopus Blanchard, 1846. A. Lectotype and its labels. B in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 45. Canthon xanthopus Blanchard, 1846. A. Lectotype and its labels. B. An ordinary specimen.
Fig. 24 in A monographic revision of the Neotropical dung beetle genus Sylvicanthon Halffter & Martínez, 1977 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini), including a reappraisal of the taxonomic history of 'Canthon sensu lato'
Fig. 24. Distribution of the three species of the candezei subgroup.
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