Bothynus horridus Endrodi 1968
Creators: name: Duarte, Paulo R. M.
name: Grossi, Paschoal C.
name: Dupuis, Fabien
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Dynastidae
Bothynus
Bothynus horridus

description: Bothynus horridus Endrödi, 1968
(Figs. 2B; 3B; 4B; 5B; 6C–D; 7B; 8D; 9)
Bothynus horridus. Endrödi 1968: 171 (original description); Endrödi 1969: 122, 129 (identification key and diagnosis); Ratcliffe & Dechambre 1983: 268 (new record); Endrödi 1985: 273 (identification key); Krajcik 2005: 38 (checklist); Abadie et al. 2008: plate 14 (figure 1); López-García et al. 2016: 496 (checklist).
Diagnosis. Bothynus horridus differs from other species of the group by the following characters: spiculum gastrale with lateral branches almost straight combined with the medial branch weakly dilated at apex (Fig. 5B); inner margin of the left paramere with no process in dorsal view and right paramere with a basal process (Fig. 6D); female with posterior internal plate of tergite 8 widely bilobed (Fig 8D). The male of B. horridus has the configuration of parameres unique within the group, characterized by one process located basally on the inner margin of the right paramere, while the left paramere is devoid of process. Other species of the group have 2 processes, one on each paramere.
Type material examined. Holotype male (HNHM), labeled: “ Paraguay 1914” [white label, handwritten] / “ Sammlg. C. Frings vend. Dez. 1937 ” [white label] / “ Holotype Bothynus horridus Endr. ” [white label, partially handwritten] (Fig. 2B). One male paratype (SNSD), labeled: “ Brasil ” [white label, quadriculate, handwritten] / “ Paratypus Bothynus horridus Endr. ” [white label, bordered in red, partially handwritten] / “Staatl. Museum für Tierkunde. Dresden” [white label].
Additional material examined. BRAZIL: DISTRITO FEDERAL: Planaltina, Embrapa Cerrados, Área Agrícola (15°35’54’’S, 47°42’51’’W), 18.xi.2005, at light, C. Oliveira — 1 female (CEMT); cerrado fragment (15°36’20’’S, 47°42’26’’W), 20.x.2005, at light, C. Oliveira — 1 male (CEMT). GOIÁS: Goiânia, x.1993, Ponchel — 1 male (FDPC). MARANHÃO: Balsas, Serra dos Penitentes, 480 m, 30.xi.2005, C.G.C. Mielke — 1m (EPGC). MATO GROSSO: Acorizal, 9.iv.2016, L. Mariani — 1 female (CEMT). Araputanga, rural area, 2.iv.2015, L.V. Duarte — 1m (CEMT). Barra das Garças, Fazenda São Carlos (15°37’54’’S, 52°09’42’’W), 19.xi.2009, M. Aragona — 1 male, 1 female (CEMT). Chapada dos Guimarães, 5.x.2008 — 1 male (CERPE); Parque Nacional da Chapada dos Guimarães, Vale do Eco, 17.i.2013, at light, M. Savaris and S. Lampert — 1m (CERPE); Buriti, 6.x.1984, Dal Ponte — 1 male (CERPE). Cotriguaçu, Fazenda São Nicolau, at light, xi.2007, O.P. Filho — 1 male (CEMT); i.2008, at light, O.P. Filho —l female (CEMT). Cuiabá, 28.x.2015, G.A. Zulli — 1 male (CEMT). Capão Verde, 4.xii.2008, M.M. Vieira — 1 male (CEMT). Diamantino, Fazenda Vale da Solidão, x.2013, E. Furtado — 4 males, 1 female (CERPE); xi.2013, E. Furtado — 3 females (CERPE). Alto Rio Arinos, ix.1999, E. Furtado — 1 male (CERPE). Itanhangá, 26-29.x.2016, J.V. Korgut — 1 male, 3 females (CEMT). Nobres, Distrito Coqueiral, 26.vi.2010, N. Danielle — 1 female (CERPE). Paranatinga, Aldeia Paikun, 11.xi.2011, O. Neto — 1m (CERPE). Porto Estrela, 24.ii.2016, E.L. Rodriguez — 1 male (CEMT). Sapezal, 14.ii.2004, E.J. Godoi — 1 female (CEMT). Sorriso, 1.v.2003, E.P. Carboni — 1 female (CEMT). MINAS GERAIS: Belo Horizonte, x.1945 — 1 male (CERPE); xi.1945 — 1 female (CERPE); xii.1945 — 1 female (CERPE). Buritis, Fazenda Querência, 3.xii.2012, at light, C.M. Oliveira — 2m (CEMT). Ibirité, 872 m, 2–15.i.1992, A. Machado — 1 male (EPGC). Lavras, 25.iii.2005, T.H.P. Reis — 1 male (CERPE); 23.ii.1999, G.M. Biasioli — 1m (CERPE). Tartaria, 29.x.1934, R. Jefferson — 1m (CECL). RIO DE JANEIRO: Cordeiro, 15.xi.1996, Joss — 1 male (FDPC). Resende, xi.1931, S. Aristóteles — 1 male (CECL). Teresópolis, Morim, Morro da Bandeira, 1600, Torre da Petrobras, 2–10.ii.2010 — 1 male (CERPE). SÃO PAULO: Natividade da Serra, Parque estadual Serra do Mar, Núcleo Santa Virgínia, Base Vargem Grande (23°23’11’’S, 45°8’43’’W), 792 m, 28.iii.2016, D.B. Muniz — 1 male (CERPE). Santo Amaro, 1938, Zikan — 1 male (IBSP). PARAGUAY: Concepción, Zanja Moroti, 20.xii.1984 — 1 male, 1 female (FDPC).
Description. Male (Fig. 3B). Length: 17.0– 23.7 mm. Width: 9.6–13.7 mm. Color: Dorsal surface usually nearly completely reddish brown; pronotum sometimes dark reddish brown; legs and ventral surface dark. Head: Clypeus with 2 triangular anterior teeth usually strong and pointed apically. Frontoclypeal ridge strongly marked, slightly convergent at middle. Interocular width equals 3.6 transverse eye diameters. Mouthparts: Labrum usually arched, sometimes asymmetrical, with a small tooth on right side. Mandibles. Maxillary galea mostly rounded apically, sometimes with a small tooth. Labium slightly sinuous on sides. Pronotum: Anterior tubercle usually strong, conical (Fig. 4B); concavity deep, broad, rugose in major males; concavity shallow, narrower, rugopunctate in minor males; sides densely covered with large, deep, contiguous punctures near to lateral margins, becoming spaced about 1 diameter of punctures toward disc; posterior discal area smooth. Legs: Inner protarsal claw more curve and wider than outer claw, usually with acute apex. Mesotibia with medial carina usually truncate, sometimes weakly crenulate. Abdomen: Ventrites 1–2 rugose, completely setose; 3–5 coarsely rugopunctate on sides, smooth on disc smooth; ventrite 6 rugose on sides, finely punctate on disc. Spiculum gastrale: Y-shaped; lateral branches almost straight, medial branch slightly enlarged and rounded at apex (Fig 5B). Hemisternite barely sclerotized, covered with 7 scattered bristles. Aedeagus: Parameres, in lateral view (left side) (Fig. 6C), with a raised, subapical, small tooth on dorsal area; apex bent downward. Parameres, in dorsal view (Fig. 6D), rounded, short apically; right paramere with a basal, long, curved inner process on inner margin; left paramere with no inner process.
Description. Female (Fig. 7B). Length: 21.4–23.1 mm. Width: 11.7–12.5 mm. As male, except in following aspects: Pronotum: Anterior discal area moderately covered with large punctures, separated about 3 puncture diameters. Legs: Protarsal claws equal in shape. Abdomen: Tergite 8 with a bilobed posterior internal plate; lobes wide (Fig. 8D). Ventrite 6 densely rugopunctate.
Distribution. Bothynus horridus has the most widespread distribution among the species of group, occurring across the Amazon Forest, Cerrado, and Atlantic Forest.
Type locality. Paraguay, but with no precise locality.
Geographical records (Fig. 9). BRAZIL: Pará, Maranhão (new state record), Rondônia, Mato Grosso (new state record), Distrito Federal, Minas Gerais, Rio de Janeiro, São Paulo. PARAGUAY: Concepción. Literature records. ARGENTINA: Missiones (Abadie et al. 2008), Rosario (Endrödi 1969). BRAZIL: Pará, Rondônia (Ratcliffe & Dechambre 1981).
description: Published as part of Duarte, Paulo R. M., Grossi, Paschoal C. & Dupuis, Fabien, 2022, A taxonomic revision of the Bothynus villiersi Endrödi, 1968 species group (Coleoptera: Scarabaeidae: Dynastinae), pp. 49-66 in Zootaxa 5093 (1) on pages 54-56, DOI: 10.11646/zootaxa.5093.1.3, http://zenodo.org/record/5901043