67 research outputs found
FIGURE 5 in Taxonomic revision of the Dichotomius sericeus (Harold, 1867) species group (Coleoptera: Scarabaeidae: Scarabaeinae)
No full textFIGURE 5. Dichotomius schiffleri Vaz-de-Mello, Gavino & Louzada, 2001. a—body,dorsal view; b—head, male (weak knobs, arrows); c—head, female (transversal ridges, arrows); d—pronotum; e—surface of elytral interstriae. Aedeagus. flateral view; g—ventral view; h—dorsal view.Published as part of Valois, Marcely C., Vaz-De-Mello, Fernando Z. & Silva, Fernando A. B., 2017, Taxonomic revision of the Dichotomius sericeus (Harold, 1867) species group (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 503-530 in Zootaxa 4277 (4) on page 517, DOI: 10.11646/zootaxa.4277.4.3, http://zenodo.org/record/82986
Anomiopus lauropalui Valois & Vaz-de-Mello & Silva 2020, comb. nov
No full textNotes on Anomiopus lauropalui (Vulcano and Pereira, 1973) comb. nov In their original description, Vulcano and Pereira (1973) described (and illustrated) S. lauropalui with three teeth on the apical third of the protibial edge, with all teeth directed forward. The authors used these characteristics to assign the new species to the genus Scatonomus. However, after the examination of the holotype, we agree that the protibial teeth are positioned at the apical half of the external edge, and only the apical tooth is directed forward. This finding means that this species belongs to Anomiopus instead of Scatonomus. Therefore, we propose the new combination Anomiopus lauropalui (Vulcano and Pereira 1973). Within Anomiopus, this species is easily distinguished from any other by two tufts of setae on the interocular space (Vulcano and Pereira 1973, Fig 2). Canhedo (2006) divided the species of Anomiopus into three species groups, and A. lauropalui best fits the diagnosis of the group smaragdinus, in which the species can be arranged based mainly on the absence of a tooth transversely inserted on the dorso-lateral surface of metatibiae, and by having at least the first metatarsomere emarginate at the apex (Canhedo 2006).Published as part of Valois, Marcely C., Vaz-de-Mello, Fernando Z. & Silva, Fernando A. B., 2020, A taxonomic revision of the Neotropical genus Scatonomus Erichson, 1835 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 1081-1114 in Journal of Natural History 54 (17 - 18) on page 1110, DOI: 10.1080/00222933.2020.1781947, http://zenodo.org/record/502090
FIGURE 10. Lamella copulatrix. a in Taxonomic revision of the Dichotomius sericeus (Harold, 1867) species group (Coleoptera: Scarabaeidae: Scarabaeinae)
No full textFIGURE 10. Lamella copulatrix. a—Dichotomius sericeus (Harold, 1867); b—D. irinus (Harold, 1867); c—D. laevicollis (Felsche, 1901); d—D. schiffleri Vaz-de-Mello, Gavino & Louzada, 2001; e—Dichotomius guaribensis sp. nov.; f— Dichotomius gilletti sp. nov.; g—Dichotomius iannuzziae sp. nov.; h—Dichotomius catimbau sp. nov. Scale bar 0,5 mm.Published as part of Valois, Marcely C., Vaz-De-Mello, Fernando Z. & Silva, Fernando A. B., 2017, Taxonomic revision of the Dichotomius sericeus (Harold, 1867) species group (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 503-530 in Zootaxa 4277 (4) on page 526, DOI: 10.11646/zootaxa.4277.4.3, http://zenodo.org/record/82986
Scybalocanthon adisi Silva & Valois 2019, new species
No full text<i>Scybalocanthon adisi</i> Silva & Valois, new species <p>(Figs. 1B, 4B, 5B, 6A)</p> <p> <b>Etymology.</b> Named in honor of Dr. Joachim Adis, who collected some of the type specimens.</p> <p> <b>Diagnosis</b>. Specimens of <i>S. adisi</i> (Fig. 1B) are similar to those of <i>S. aereus</i> (Fig. 1C) in body coloration; aedeagus with parameres elongate, subrectangular, not excavated ventrally (Figs. 4 B–C); and endophallus lacking bristles or microbristles close to the FLP sclerite (Figs. 5 B–C). However, <i>S. adisi</i> can be easily distinguished by the lack of a carina at the anterior portion of the eighth elytral stria.</p> <p> <b>Description. Body.</b> Oval, lateral edges rounded. Surface opaque, completely microgranulate. <b>Color</b>. Pronotum, hypomera (except internal margin), metaventrite, abdominal ventrites, pygidium, middle of femora, and tibiae yellow or light brown. Head, internal margin of hypomera, prosternum, mesoventrite, mesoepisternae, metaepisternae, elytra, trochanters, and proximal and distal portions of femora dark brown. <b>Length.</b> 6.0– 8.9 mm. <b>Thorax</b>. Anterior angles of pronotum acute (approximately 85°). Lateral margin regularly curved outward, not forming an angle at the middle portion. <b>Elytra</b>. Striae thin and opaque, weakly impressed, punctures inconspicuous. Interstrial surface with ocellar punctures, microgranulate. Eighth stria effaced at the basal third, lacking carina at the anterior portion.</p> <p> <b>Aedeagus.</b> Parameres symmetrical and elongate, with subrectangular shape, truncate apically (Fig. 4B). Dorsal and ventral margins of parameres substraight. SRP circular, with substraight handle-shaped extension (Fig. 5B). FLP I-shaped (Fig. 5B). A+SA with two superposed and elongate sclerites (Fig. 5B). AS as in Fig. 5B.</p> <p> <b>Type material.</b> <b>Holotype. BRAZIL:</b> AMAZONAS: Rio Taruma Mirim NW Manaus, 24.xi.1976, J. Adis— 1♂ (CEMT). <b>Paratypes. BRAZIL</b>: AMAZONAS, Ega [= Tefé] (3°22’S, 64°42’W), [no date], [anonymous]— 1♂ (CMNC); Rio Tarumã Mirim, NW Manaus (3°0’58’’S, 60°10’30’’W), 13.i.1977, J. Adis— 1♂ (CMNC); Rio Ta- rumã Mirim, NW Manaus (3°0’58’’S, 60°10’30’’W), 16.ii.1977, J. Adis— 1♂ (CMNC); Rio Tarumã Mirim, NW Manaus (3°0’58’’S, 60°10’30’’W), 27.iv.1977, J. Adis— 1♂ (CMNC); Rio Tarumã Mirim, NW Manaus (3°0’58’’S, 60°10’30’’W), 11.v.1977, J. Adis— 1♀ (CMNC); Rio Tarumã Mirim, NW Manaus (3°0’58’’S, 60°10’30’’W), 8.ii.1977 — 1♀ (CEMT). <b>ECUADOR:</b> PASTAZA: Lorocachi, 220 m, 16–27.ii.1996, Mayala C. Carpio— 1♀ (CEMT).</p> <p> <b>Distribution.</b> Known from Brazil (Amazonas) and Ecuador (Fig. 6A). <b>Endemism areas</b>: <b>Brazilian sub-region</b>: Boreal Brazilian dominion: Napo and Imerí provinces (see Morrone 2014; fig. 12).</p>Published as part of <i>Silva, Fernando A. B. & Valois, Marcely, 2019, A taxonomic revision of the genus Scybalocanthon Martínez, 1948 (Coleoptera Scarabaeidae: Scarabaeinae: Deltochilini), pp. 301-341 in Zootaxa 4629 (3)</i> on pages 310-311, DOI: 10.11646/zootaxa.4629.3.1, <a href="http://zenodo.org/record/3995508">http://zenodo.org/record/3995508</a>
Figure 3 in A taxonomic revision of the globulus species group of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae)
No full textFigure 3. Detailed morphology of the species in the globulus group. (a) Ventral view of male, Dichotomius femoratus; (b) ventral view of male, D. gamboaensis; (c) male head, D. fortepunctatus; (d) female head, D. gamboaensis; (e) pronotum of male, D. femoratus; (f) pronotum of male, D. fortepunctatus; (g) elytral striae of male, D. fortepunctatus; (h) elytral striae (Estria) of male (ShMicro, shagreened microsculpture), D. femoratus; (i) elytral striae of male, D. berthalutzae sp. nov.; (j) male abdominal ventrites in ventral view, D. berthalutzae sp. nov.; (k) male abdominal ventrites in ventral view, D. femoratus; (l) female abdominal ventrites in lateral view, D. femoratus.Published as part of Valois, Marcely C., Silva, Fernando A. B. & Vaz-de-Mello, Fernando Z., 2022, A taxonomic revision of the globulus species group of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 119-147 in Journal of Natural History 56 (1-4) on page 125, DOI: 10.1080/00222933.2022.2046887, http://zenodo.org/record/653025
Figure 4 in A taxonomic revision of the Neotropical genus Scatonomus Erichson, 1835 (Coleoptera: Scarabaeidae: Scarabaeinae)
No full textFigure 4. Details of Scatonomus morphology. (a) S. mitzae sp. nov., microgranulated interstrial surface (white arrow indicating the elytral stria); (b) S. janssensi, detail of elytral striae; (c) S. thalassinus, surface of pronotal disc (wrinkles, square); (d) S. mitzae sp. nov., puncticulate pronotal surface (white arrow, a coase puncture; black arrow, a fine puncture); (e) S. janssensi, ocellate punctures on pronotum; (f) S. fasciculatus, striate surface on mesepimeron; (g) S. janssensi, broad and transverse carina at the posterior portion of clypeus (white arrow) and longitudinal carina (black arrow); (h) holotype of S. xanthopygus (synonym of S. chalybaeus), dry body fat partially covering the pygidial disc; (i, j) Abdominal ventrites of S. thalassinus.Published as part of Valois, Marcely C., Vaz-de-Mello, Fernando Z. & Silva, Fernando A. B., 2020, A taxonomic revision of the Neotropical genus Scatonomus Erichson, 1835 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 1081-1114 in Journal of Natural History 54 (17-18) on page 1088, DOI: 10.1080/00222933.2020.1781947, http://zenodo.org/record/502090
Figure 2 in A taxonomic revision of the globulus species group of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae)
No full textFigure 2. Holotypes. Dichotomius danieli, male: (a,b) Dorsal and ventral views; (c) labels; (d–f) tegmen in dorsal, ventral and lateral views; D. favi, male: (g,h) dorsal and ventral views; (i) labels; (j–l) tegmen in dorsal, ventral and lateral views. D. rodrigoi, male: (m,n) dorsal and ventral views; (o) labels; (p–r) tegmen in dorsal, ventral view and lateral views. Lectotype D. globulus, male: (s,t) dorsal and ventral views; (u) labels.Published as part of Valois, Marcely C., Silva, Fernando A. B. & Vaz-de-Mello, Fernando Z., 2022, A taxonomic revision of the globulus species group of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 119-147 in Journal of Natural History 56 (1-4) on page 124, DOI: 10.1080/00222933.2022.2046887, http://zenodo.org/record/653025
Dichotomius (Selenocopris) berthalutzae Valois, Silva
No full text<i>Dichotomius (Selenocopris) berthalutzae</i> Valois, Silva and Vaz-de-Mello sp. nov. <p>(Figures 1 (b), 3(i–j), 4(c–d), 5(c, i), and 6)</p> <p> <i>Etymology</i></p> <p>Named after Bertha Lutz (1894–1976), a Brazilian diplomat, politician and zoologist, for her contributions to Brazilian science in the early twentieth century.</p> <p> <i>Diagnosis</i></p> <p> <i>Dichotomius berthalutzae</i> sp. nov. is suggested to be closely related to the South American species <i>D. fortepunctatus</i> and the Central American <i>D. gamboaensis</i>. All these species have a distinct pre-apical longitudinal carina on the dorsal surface of the paramera (Figure 4 (c, d,g–j)), and the ME with two well-developed hook-like projections separated by a broad C-shaped emargination (Figure 5 (c,f,g)). However, in comparison with <i>D. fortepunctatus</i> and <i>D. gamboaensis</i>, the new species has a shorter longitudinal carina on the paramera, which is approximately one-third of the total length of the paramera in dorsal view, whereas in the other two species the carina is approximately one-fourth (<i>D. fortepunctatus</i>) or half (<i>D. gamboaensis</i>) of the paramera length. Externally, <i>D. berthalutzae</i> can be distinguished from the other two species by its smaller body size (10–11 mm); surface of head with different-sized ocellate punctures, more sparsely distributed on anterior clypeal region; surface of elytral interstriae shagreened, with dense smooth dots medially (Figure 3 (i)); mesofemora with a longitudinal groove along the whole posterior margin; sixth abdominal ventrite of male twice longer than fifth (Figure 3 (j)); and pygidium of male rounded at the apex.</p> <p> <i>Description (male)</i></p> <p> <b>Body length</b>: 10–11 mm. Dorsum black, barely shiny. <b>Head</b>: clypeal edge bidentate, teeth acute, separated by a deep V-shaped emargination. Head with ocellate punctures spaced at most by the diameter of a puncture, except on anterior region of the clypeus, which has ill-defined transverse wrinkles. Cephalic process produced into a small central tubercle. Antennal club with light brown tumescence. <b>Thorax</b>: pronotum approximately twice wider than long. Anteromedian region of the disc with a shallow central excavation. Surface of the disc with dense ocellate punctures equally spaced by half their diameter. Surface of hypomera completely covered with ocellate punctures; anterior and lateral regions with punctures bearing short orange setae. Prosternum filled with ocellate punctures. Mesoventrite covered with ocellate punctures, usually bearing short orange setae. Metaventrite surface with ocellate punctures, except on disc; punctures on anterior region usually bearing short setae. Meso-metaventral suture distinct. Anterior region half the length of metafemora. Mid-longitudinal sulcus feebly marked posteriorly. Lateral regions of metaventrite with ocellate punctures larger than those on anterior region. <b>Elytra</b>: convex medially in lateral view. Humeral callus distinct. Striae thin, punctate; punctures wider than striae, spaced by 3 times their diameter in the elytral disc (Figure 3 (i)). Interstriae I–VII distinctly convex. <b>Legs</b>: protibial spur curved at apical fifth. Metatibial spur deeply emarginate apically. Ventral surface of the profemora covered with coarse setiferous punctures along entire extension, setae very short. Ventral surface of the mesofemora with coarse punctures at apical third. Ventral surface of the metafemora with coarse punctures, concentrated on apical half; basal half with sparse, scattered punctures. Metafemora bearing a thin longitudinal groove along whole extension of posterior margin, wider on apical half. <b>Abdomen</b>: ventrites covered with ocellate punctures at lateral regions, punctures at medial region restricted to a single row along anterior edge. Pygidium approximately twice wider than long, convex medially. Pygidial disc covered with ocellate punctures, spaced by at least their diameter. Apex of the pygidium margined. <b>Tegmen</b>: in dorsal view, paramera rectangular in shape, twice longer than its width medially, apex truncate (Figure 4 (c,d)). Longitudinal carina on dorsal surface of paramera serrate along its margin (Figure 4 (c)). In dorsal view, inner edges close to each other at basal third (Figure 4 (c)). Ventral sclerotised membrane between paramera thinner at basal half; lateral margins angulate at anterior half (Figure 4 (d), arrow). <b>Endophallus</b>: inferior projections of ME separated by a broad U-shaped emargination (Figure 5 (c)). ME with a longitudinal fold at the median superior region (Figure 5 (c)). A and SA endophallites thin, C-shaped in lateral view; SA endophallite with reticulate texture inferiorly (Figure 5 (i)). FLP endophallite C-shaped in lateral right view, inferior region shorter than superior one; surface of the C-shaped region with irregular projections (Figure 5 (i)). SRP endophallite approximately J-shaped (Figure 5 (i)). <b>Female</b>: differs from male by the clypeal teeth larger and acute. Clypeal surface with distinct transverse ridges. Sixth abdominal ventrite about twice longer than fifth medially and bearing a small central knob. Pygidial disc strongly convex in lateral view.</p> <p> <i>Type material examined</i></p> <p> Holotype: COLOMBIA: <b>Valle Del Cauca</b>. La Fragua. Valle R[io] Cajambre C.N.F. 28 August– 01–September 1993. L.C. Pardo Locarno (1♂ CEMT).</p> <p> Paratypes [79♂♂ 32♀♀]: COLOMBIA: Chocó: Acandí, Corregimiento de Capurganá. Jardín Botánico. Bosque Húmedo Tropical. 8.628°N, - 77.353°W, 30 m. 16–18 January 2008. Pitfall with human faeces. J. Arias, P. Delgado and A. González (43♂♂ 41♀♀ CEMT). Same data but (10♂♂ 10♀♀ ECC). Same but Sapzurro. Bosque Húmedo Tropical. 8.639°N, - 77.354°W. 63 m. 15–17 January 2008. Pitfall with human faeces. J. Arias, P. Delgado and A. González (20♂♂ 20♀♀ CEMT). Same data but Corregim, Capurganá Camino ‘ Al Cielo’. 10 m. 6 January 1999. A. Vitolo (1♂ 1♀ CEMT); PNN Enseada de Utria. 10 June–3 July 1997. Llanos-Jurado (1♂ CEMT); Lloró. R. Atrato C.N.F. 5–8 January 1993. L. C. Pardo Locarno (1♂ CEMT); same data but 90 m. 5.500°N, - 76.5166°W. 02–May. J. Noriega (1♂ CEMT); <b>Valle Del Cauca</b>. La Fragua. Valle R[io] Cajambre C.N.F. 28–August–01–September–1993. L.C. Pardo Locarno (1♂ CEMT); <b>Amazonas</b>: Leticia. 70 m. October 2005. J. Noriega (1♂ CEMT).</p>Published as part of <i>Valois, Marcely C., Silva, Fernando A. B. & Vaz-de-Mello, Fernando Z., 2022, A taxonomic revision of the globulus species group of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 119-147 in Journal of Natural History 56 (1 - 4)</i> on pages 129-131, DOI: 10.1080/00222933.2022.2046887, <a href="http://zenodo.org/record/6530252">http://zenodo.org/record/6530252</a>
Scatonomus viridis subsp. walzi Pereira and Martinez 1959
No full textNotes on Scatonomus viridis walzi Pereira and Martínez, 1959 Pereira and Martínez (1959) described S. viridis walzi based on three females from Contrera, Paraguay. According to the original description, the subspecies may be distinguished from S. viridis viridis by the clypeus with a shallower central emargination, shorter clypeal teeth and sparser microsculpture on the head, pronotum and elytra. During the course of our revision, we could examine the female holotype of S. viridis walzi only through a low-quality photo of the dorsal habitus of the specimen. Pereira and Martínez (1959) stated that one paratype of their subspecies was deposited in the MZSP collection, but we could not find this specimen during our visit to the museum. Due to the limited material available for a more comprehensive comparative study of the subspecies comprising S. viridis, we opted to maintain the current taxonomic arrangement, in which S. viridis is divided into two subspecies, until more material becomes available for future studies.Published as part of Valois, Marcely C., Vaz-de-Mello, Fernando Z. & Silva, Fernando A. B., 2020, A taxonomic revision of the Neotropical genus Scatonomus Erichson, 1835 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 1081-1114 in Journal of Natural History 54 (17 - 18) on page 1109, DOI: 10.1080/00222933.2020.1781947, http://zenodo.org/record/502090
Dichotomius (Selenocopris) benesi Vaz-de-Mello & Nunes 2016
No full textDichotomius (Selenocopris) benesi Vaz-de-Mello and Nunes, 2016 (Figures 1 (a), 4(a–b), 5(b), and 6) Dichotomius (Selenocopris) benesi Vaz-de-Mello and Nunes 2016: 295. Diagnosis Within the globulus group, only D. benesi and D. ocellatopunctatus are brachypterous species. They are associated with mountain formations; Vaz-de-Mello and Nunes (2016) provided detailed descriptions for both species, and illustrated the tegmen of D. benesi. Therefore, herein the description of D. benesi is merely complemented by the inclusion of the following characters of the male genitalia: in dorsal view, paramera rectangular, onethird longer than its width at medial portion; apex slightly obliqualy truncate; surface with a feeble pre-apical longitudinal carina, inner edge curved inward at basal third (Figure 4 (a)); in lateral view, apical half of paramera approximately as wide as base; ventral sclerotised membrane between paramera thinner at basal half, slightly angulate laterally (Figure 4 (b)). ME with two hook-like projections inferiorly, projections separated by a broad U-shaped emargination; ME with a longitudinal fold at the median inferior region (Figure 5 (b)). Complex of A and A+SA endophallites thin, C-shaped in lateral view; SA endophallite with reticulate texture inferiorly (Figure 5 (h), arrow). FLP endophallite C-shaped in lateral right view, inferior region thinner than superior one; surface of the C-shaped region with irregular projections (Figure 5 (h)). SRP endophallite approximately J-shaped (Figure 5 (h)). Type material examined Holotype of Dichotomius benesi ♂ [CEMT]: ‘ Panama Veraguas Santa Fé’ /‘ 811 m 8°29 ʹ N 81° 06 ʹ W’ /‘ 16–18–VI–2013 ’/‘ V Benes lgt’. Paratype [♀, MZUFPA]: same data as the holotype.Published as part of Valois, Marcely C., Silva, Fernando A. B. & Vaz-de-Mello, Fernando Z., 2022, A taxonomic revision of the globulus species group of Dichotomius Hope, 1838 (Coleoptera: Scarabaeidae: Scarabaeinae), pp. 119-147 in Journal of Natural History 56 (1 - 4) on pages 128-129, DOI: 10.1080/00222933.2022.2046887, http://zenodo.org/record/653025
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