Dichotomius (Dichotomius) reclinatus ( Felsche, 1901 )

11. Dichotomius (Dichotomius) reclinatus ( Felsche, 1901) View in CoL species group

Diagnosis: This species group was revised by Arias-Buriticá and Vaz-de-Mello (2023). The species of the D. reclinatus species group are recognized by the following combination of characters: (1) Medium to large-sized individuals (17–34.3 mm). (2) Head oval and twice wider than long ( Fig. 20 View Figure 20 a-d). (3) Clypeal margin complete with two smooth and blunt teeth ( Fig. 20 View Figure 20 a-d). (4) Clypeal surface with strong and well-defined transverse wrinkles.(5) Ventral clypeal process with invagination and then a conical process obtuse tip or with reduced conical process near to mouthparts ( Fig. 20e View Figure 20 ). (6) Males head with three horns the first one is central, directed backwards, subcylindrical and blunt-tipped. The others two horns in the clypeus or at the base of the first horn ( Fig. 20a, b View Figure 20 ) (In D. quadrinodosus where the first horn is dorsoventrally flattened or very short (Males 2)). (7) Protibial spur without angle near apex ( Fig.19f View Figure 19 ). (8) Males pronotum with antero-medial excavation that takes up two-thirds of its length (except in Males 2 of D.quadrinodosus ) ( Fig. 20a, b View Figure 20 ). Female′ s pronotum with a central excavation similar or less to the males or with a central two-pointed process ( Fig. 20 View Figure 20 c-d). (9) Pygidium with complete apical margin ( Fig. 20f View Figure 20 ). (10) Male genital organ without subgenital plate ( Fig. 20i View Figure 20 ). (11) Widened parameres in lateral view ( Fig. 20g View Figure 20 ), without setae in the apical region ( Fig. 20 View Figure 20 g-i). (12) Parameres in ventral view with straight inner edge, basal region extended to the phallobase and with an excavation beside this projection ( Fig. 20i View Figure 20 ) (except in D. quadrinodosus ). (13) ME well sclerotized, large, and asymmetrical ( Fig. 20m View Figure 20 ).

Composition: Four valid species: Dichotomius horridus ( Felsche, 1911) , D. nimuendaju ( Luederwaldt, 1925) , D. quadrinodosus ( Felsche, 1901) and D. reclinatus ( Felsche, 1901) .

Geographic distribution: Pacific Dominion (Cauca, Chocó-Darién, Ecuadorian and Magdalena Provinces), Boreal Brazilian dominion (Guianan Lowlands and Roraima provinces), South Brazilian dominion (Madeira and Rondônia provinces), Chacoan subregion Southeastern Amazonian dominion ( Xingu-Tapajós province ), Chacoan dominion ( Cerrado province ), and Paraná dominion (Atlantic, Paraná Forest and Southern Espinhaço provinces) ( Fig. 21a View Figure 21 ) .