Passalus (Pertinax) affinis Percheron, 1835 (Fig. 10) Type locality. Santo Domingo, Dominican Republic. Diagnosis. 42.5–48.6 mm total length. Clypeus hidden below frons, not visible dorsally, with anterior angles developed. Frons border straight, with or without a strong notch. Frontal fossae glabrous. Medio-frontal tubercles developed, basolaterally with smaller interior tubercles. Central tubercle of MFS with apex not free; basolateral tubercles large and marked. Antennal club trilamellate. Apex of lacinia bidentate. Mentum with medial base swollen and glabrous. Prosternal process rhomboidal, acute. Mesosternum glabrous with scars marked and elongate. Antero-lateral metasternum and lateral groove pubescent, disc delimited by punctures posterior to middle. Humeri pubescent, epipleura pubescent in basal third. Material examined. 33 specimens. CNHM 1955, Karl Brancsik Colln. Ex Eduard Knirsch. Passalus affinis det.: F.S. Pereira 1959 (1 FMNH). DOMINICAN REPUBLIC: Boca Chica 10 Km, 21.X.1972, J. & S. Klapperich, Passalus (Pertinax) affinis Percheron, Reyes-Castillo, det. 1974 (1 IEXA); Barahona Province, Polo, 13.IX.1973, J. Schuster, Passalus (Pertinax) affinis Perch. Det. J.C.S. 1985 (1♀ UVGC); Cambita Garabitos (S.C.), 3.VII.1978, Col. Fc et Bud, Cambefort leg., Passalus (Pertinax) affinis Percheron. Reyes-Castillo, det. 80 (5 IEXA); Dominican Republic, no further data. (1 UVGC); col., Muerto en terrario VIIIa, J. Schuster (1 IEXA); Muerto en terrario VIIIa, J. Schuster (2 IEXA); El Seibo Prov., 8 km W Miches, cacao plantation, 16.IX.1973, J. Schuster (2 UVGC); same locality and collector, cacao plantation and large trees 15,16. IX.1973 (5♀♀, 4♂♂ 5 gender unknown UVGC); La [H]ermita. El Cercado Prov., 28.III.1981, Abud-L., Marcano Cols., M.N.H.N., Passalus affinis Det. Maes 1995 (1 IEXA). HAITI: Dept. du Sud, 14 Km N. of Cavaillon, 1800 ft, 6.VIII.1962, coll. D.R. Paulson, Woodruff Colección, Passalus (Per.) affinis Perch. 1835. S. Boucher det. 1987. (2 IEXA); Lebrun, moist log, 2.I.1974, coll. R.L. Sette. Passalus (Pertinax) affinis Perch. Det.: J.C.S. 1985 (1 UVGC); Port-Au-Prince, Muséum Paris, P. affinis Percheron 1835 S. Boucher det. 93 (1 IEXA). Distribution. Endemic to Hispaniola (Reyes-Castillo et al. 1995, Ivie & Gillogly 1998). Comments. Schuster (1975) described the copulation and aedeagus of this species. Schuster and Reyes- Castillo (1981) described the larvae based on specimens from Barahona and El Seibo (cited as “El Ceibo”).

Published as part of Jiménez-Ferbans, Larry, Reyes-Castillo, Pedro & Schuster, Jack C., 2015, Passalidae (Coleoptera: Scarabaeoidea) of the Greater and Lesser Antilles, pp. 491-512 in Zootaxa 3956 (4) on page 499, DOI: 10.11646/zootaxa.3956.4.3, http://zenodo.org/record/236658