Scythropopsis lacrymans (Thomson, 1865), comb. nov.

(Fig. 42)

Pteridotelus lacrymans Thomson, 1865: 544; Gemminger, 1873: 3145 (cat.); Thomson, 1878: 15 (type).

Acanthoderes lacrymans; Bates, 1880: 140; Blackwelder, 1946: 610 (checklist); Ordóñez-Reséndiz & Martínez- Ramos, 2017: 828 (distr.).

Acanthoderes (Psapharochrus) lacrymans; Aurivillius, 1923: 386 (cat.); Gilmour, 1965: 613 (cat.); Monné, 2005: 164 (cat.).

Pteridotelus lachrymosus; Bates, 1880: pl. 11, fig. 6 (error).

Acanthoderes lachrymans; Chemsak et al., 1992: 130 (checklist); Noguera & Chemsak, 1996: 406 (distr.).

Acanthoderes (Pardalisia) lacrymans; Monné, 1994: 70 (cat.); Monné & Giesbert, 1994: 229 (checklist); Vargas- Cardoso et al., 2018:96 (hosts); Monné, 2019:225 (cat.).

Thomson (1865) described Pteridotelus lacrymans without explaining its inclusion in the genus. Since the main feature of Pteridotelus (last antennal segments distinctly widened), is not present in this species it is incorrect to maintain it in the genus. The species Pteridotelus lacrymans appears in Monné & Giesbert (1994), and Monné (1994) as an Acanthoderes, without explanation in either reference. Factually, Pteridotelus lacrymans cannot be placed in Acanthoderes (Pardalisia), because the antennae are distinctly longer, with distinct ventral pubescence, clearly forming tufts in antennomeres III and IV (distinctly shorter and glabrous in A. (P.) funeraria Bates, 1861, elytra carinate toward distal area (not so in A. (P.) funeraria). Due to the antennal setae Pteridotelus lacrymans also has affinities with Tetrasarus Bates, 1880 . However, Tetrasarus is another problematic genus with species assigned to but not belonging to it. The presence of a dense tuft of long setae on the apex of antennomeres III and IV is a definitive character of Tetrasarus and is lacking in P. lacrymans . Although Pteridotelus lacrymans differs somewhat in general appearance to other Scythropopsis species it is provisionally placed in the genus because of the common characters previously commented on.

Material examined: MEXICO, Morelos Cuernavaca, 1 male, no date indicated, Martins col. (MZSP) .

Known geographical distribution (Monné, 2019; Tavakilian & Chevillotte, 2019; new record): Mexico (Oaxaca, Puebla, Guerrero, Morelos).