(Figs 46–51)
Anelaphus nitidipennis Chemsak & Linsley, 1968: 33; Chemsak et al., 1988: 292 (distr.); Chemsak et al., 1992: 39 (cat.); Monné, 1993: 53 (cat.); Monné & Giesbert, 1994: 50 (checklist); Chemsak & Noguera, 1995: 59 (distr.); Noguera & Chemsak, 1996: 398 (cat.); Noguera et al., 2002: 623 (distr.); Monné, 2005: 195 (cat.); Noguera et al., 2007: 310 (distr.); MacRae et al., 2012: 176 (host); Noguera et al., 2018: 461 (distr.); Bezark, 2018: 46 (distr.); Monné, 2021: 309 (cat.).
This species is somewhat aberrant to Anelaphus. In general, the vertex in Anelaphus is flattened or, at most, gradually and slightly elevated toward the prothorax (somewhat abruptly and distinctly elevated in A. nitidipennis), the transverse sulcus on the prosternum is shallow or nearly absent in all species examined by us (deeper in A. nitidipennis), the lower eye lobes are larger and less distant from each other ventrally (proportionally smaller and very distant from each other ventrally in A. nitidipennis). According to Lingafelter (2020) the antennomeres are not dorsally carinate in Anelaphus, while the antennomeres IV–VIII are carinate in A. nitidipennis (III–IX, according to Chemsak and Linsley 1968). Even so, it is difficult to separate this species from the other species of Anelaphus. This because there are other species with the posterodorsal area of the head at least somewhat tumid (e.g. A. pilosus), and with the antennomeres at least somewhat dorsally carinate (e.g. A. subinermis).
Currently, the species is known from Mexico (Sinaloa, Colima, Morelos, Oaxaca, Jalisco, Michoacán), and Guatemala (Zacapa) (Monné 2021; Tavakilian and Chevillotte 2021).
Material examined. GUATEMALA, Zacapa: Quarry Rd to San Lorenzo, Sierra las Minas, 15º05’N 89º67’W, 675 m, 1 female, 29-31.V.2019, Wappes, Monzón and Skillman leg. (FSCA).