A taxonomic revision of Bolbapium Boucomont, 1910 (Coleoptera: Scarabaeoidea: Geotrupidae) Author Carvalho, Edrielly Carolinne Author Vaz-de-Mello, Fernando Z. text Journal of Natural History 2022 2022-08-18 56 13 - 16 769 828 http://dx.doi.org/10.1080/00222933.2022.2092429 journal article 127383 10.1080/00222933.2022.2092429 3cf6a07e-1580-4cfd-b8b6-74f51dbd72d7 1464-5262 7012096 Bolbapium sergioidae Carvalho and Vaz-de-Mello, sp. nov. ( Figures 3 (c), 7(d), (e), (f), 16(b)) Diagnosis Lower parts of clypeo-frontal carina much higher than anterior clypeal carina; mesoanterior pronotal structure bituberculated, well emarginated, tubercle on each side of the central structure ( Figure 3 (c)). Etymology. Named for Dr Sergio Ide, Brazilian scarabaeoidologist, who reviewed the genus Bolbapium in his MSc thesis back in 1992. Type locality. Recanto das Siriemas, Cuiabá, Mato Grosso , Brazil . Holotype . ‘ Brasil : Mato Grosso ,/ Cuiabá , Recanto das/ Siriemas , 15°35 ʹ 33’S, 56°/1 ʹ 37”W, x.2015 /LGOA Nunes.” ♂ ( CEMT 74746 ). Paratypes . 7 specimens examined. ARGENTINA : Corrientes , Rta 14, 45 km N Paso de Los Libres , 29°31 ʹ 21”S , 57°7 ʹ 58”W , 24 . xi .2006, Berger-Dostal leg . (1 CEMT ); Santiago del Estero , Rio Hondo , [ 27°35 ʹ 34”S , 64°54 ʹ 46”W ], 25 .xi .1953, coll . Martínez, A . Ogloblin leg. (1 COPL ). BOLIVIA : Santa Cruz , [ 17°48 ʹ 52”S , 63° 9 ʹ 21”W ], 30 .x .1955, Zischka leg. (1 CEMT ). BRAZIL : Mato Grosso , Várzea Grande , EMPAER, 08 . xi .2021 G . Pessoa leg . (2 CEMT ). PARAGUAY : Assunção , [ 25°15 ʹ 49”S , 57°34 ʹ 33”W ], 14 .iv .1948, coll . Martínez , Podtinguin leg . (1 COPL ); Cordillera , Pirareta , 25°29 ʹ S , 56°56 ʹ W , 03 .xi .2012, U . Drechsel leg . (1 COPL ). Description Body size : Length: 5.70–6.01 mm . Width: 4.41–4.69 mm . Head : Lower parts of clypeofrontal carina much higher than anterior clypeal carina. Frons presents an arc-shaped carina that connects with clypeo-frontal carina; region between the carina and the clypeus with a weak and not very evident score. Antenna with the last three antennomeres with globular shape compared with the other species ( Figure 2 (c)). Pronotum : Bituberculated structure, well emarginated, and a tubercle on each side of the central structure. Ventral region of the thorax : Central region of the metaventrite with a few unevenly distributed setae. Elytron : There are setae in the apical region of the external dorsal margin of the elytron (quantity varies among individuals). Male terminalia : In dorsal view, parameres are found together, separating slightly at the apex ( Figure 7 (d)); in lateral view, curved parameres forming an angle of almost 45°; posterior margin with slightly curved projection and rounded apex ( Figure 7 (f)). Sexual dimorphism : This species does not feature sexual dimorphism. Remarks: The primary type is deposited at the CEMT. Differential diagnosis. Bolbapium sergioidei sp. nov. is morphologically similar to B. dutraorum sp. nov. and B. striatopunctatum in presenting the forehead with a transverse carina without tubercle formation on each side. However, it is easily distinguished by the difference in structures in the anterior region of the pronotum: B. sergioidei sp. nov. has a strongly bituberculated structure, in addition to the upward-projected clypeus. Geographical distribution. Brazil (Mato Grosso); Bolivia (Santa Cruz); Argentina (Corrientes and Santiago del Estero), Paraguay ( Asunción and Cordillera ) .