FIGURE 2 in Correction of existing generic and species concepts in Platyceroidini (Coleoptera: Lucanidae: Lucaninae) and the description of four new species of Platyceroides Benesh

FIGURE 2. Form of the flagellum of the male genitalia in species groups of the nominal subgenus. 2A, Platyceroides agassii species group, cylindrical and gradually widening to apex (basal piece and parameres shown for context); 2B, Platyceroides pampinatus species group, flagellum abruptly widening, apex with sclerotized tip; 2C, Platyceroides californicus species group; 2D, Platyceroides opacus species group, apices abruptly widened.