A taxonomic revision of the genus Scybalocanthon Martínez, 1948 (Coleoptera Scarabaeidae: Scarabaeinae: Deltochilini) Silva, Fernando A. B. Valois, Marcely Zootaxa 2019 2019-07-08 4629 3 301 341 4W3L7 Silva & Valois Silva & Valois 2019 [151,594,1321,1348] Insecta Scarabaeidae Scybalocanthon Animalia Coleoptera 9 310 Arthropoda species adisi sp. nov.  ( Figs. 1B, 4B, 5B, 6A)   Etymology.Named in honor of Dr. Joachim Adis, who collected some of the typespecimens.   Diagnosis. Specimens of  S. adisi( Fig. 1B) are similar to those of  S. aereus( Fig. 1C) in body coloration; aedeagus with parameres elongate, subrectangular, not excavated ventrally ( Figs. 4B–C); and endophallus lacking bristles or microbristles close to the FLP sclerite ( Figs. 5B–C). However,  S. adisican be easily distinguished by the lack of a carina at the anterior portion of the eighth elytral stria.   Description. Body.Oval, lateral edges rounded. Surface opaque, completely microgranulate. Color. 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. Length.6.0– 8.9 mm. Thorax. Anterior angles of pronotum acute (approximately 85°). Lateral margin regularly curved outward, not forming an angle at the middle portion. Elytra. 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.  Aedeagus.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). ASas in Fig. 5B.   Type material.   Holotype. BRAZIL: AMAZONAS:  Rio Taruma MirimNW Manaus,  24.xi.1976, J. Adis— 1♂( CEMT).   Paratypes. BRAZIL: 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);  RioTa- 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).   ECUADOR: PASTAZA: Lorocachi,  220 m,  16–27.ii.1996, Mayala C.Carpio— 1♀( CEMT).   Distribution.Known from Brazil(Amazonas) and Ecuador( Fig. 6A). Endemism areas: Brazilian sub-region: Boreal Brazilian dominion: Napoand Imerí provinces (see Morrone 2014; fig. 12). 2847261578 1976-11-24 CEMT Rio Taruma Mirim NW Manaus Brazil Rio Taruma Mirim 9 310 1 1 AMAZONAS holotype 2847261460 CMNC Ega & Tefe Brazil 10 311 -3.3666668 BRAZIL 1307 -64.7 9 310 1 1 paratype 2847261540 [269,1337,152,180] 1977-01-13 CMNC NW Manaus Brazil -3.0161111 Rio Taruma Mirim 21 -60.175003 10 311 1 1 paratype 2847261636 1977-02-16 CMNC NW Manaus Brazil -3.0161111 Mirim 21 -60.175003 Rio 10 311 1 1 paratype 2847261666 1977-04-27 CMNC NW Manaus Brazil -3.0161111 Rio Taruma Mirim 21 -60.175003 10 311 1 1 paratype 2847261468 1977-05-11 CMNC NW Manaus Brazil -3.0161111 Rio Taruma Mirim 21 -60.175003 10 311 1 1 paratype 2847261502 1977-02-08 CEMT NW Manaus Brazil -3.0161111 Rio Taruma Mirim 21 -60.175003 10 311 1 1 paratype 2847261529 1996-02-16 1996-02-27 1996-02-16 CEMT Lorocachi & Mayala C. Ecuador 220 PASTAZA 10 311 1 1 Pastaza paratype