Cryptogenius, Westwood, 1842

Costa-Silva, Vinícius & Vaz-de-Mello, Fernando Z., 2023, Not everything is what it seems: the study of type specimens of Cryptogenius Westwood, 1842 species (Coleoptera: Hybosoridae: Anaidinae) reveals a new species and new synonyms, Journal of Natural History 57 (1 - 4), pp. 175-192 : 189

Key to Cryptogenius species

1 Pronotal disc slightly convex; outer margin of metatibiae with no more than eight teeth pointed backwards ( Figure 2f ); male with anterior border of profemur with a distinct hookshaped tubercle ( Figure 2e , black arrow); parameres with lateral margin constricted near the apex ( Figure 2d , black arrows)... Cryptogenius miersianus Westwood 1842

1̍ Pronotal disc flat; outer margin of metatibiae with nine or more acute teeth pointed laterally ( Figure 1a,b ); male with anterior border of profemur without tubercles or carinae ( Figure 1b ); parameres with lateral margin not constricted near the apex ( Figure 1d,e )... Cryptogenius westwoodi sp. nov.

Figures

Figure 1. Holotype of Cryptogenius westwoodi sp. nov. (Ò CEMT) in (a) dorsal (white arrow showing the diagonal carinae in the pronotum), (b) ventral and (c) lateral views (white arrow indicates the third carina extending from the humerus to declivous area). Habitus of male genitalia in (d) dorsal and (e) ventral view. (f) labels. Scale bars: a–c = 1 mm; d, e = 0.5 mm.

Figure 2. Lectotype of Cryptogenius miersianus (Ò OUMNH) in (a) dorsal and (b) lateral views; (c) labels. Legs and apex of male genitalia of a non-type specimen: (d) parameres in dorsal view (black arrow shows the constriction near the apex); (e) the anterior right leg of a male specimen, in ventral view, showing the hook on the femur (black arrow), and (f) the left hind tibia showing the crenulation in the outer margin (black arrows). Scale bars: a–c, e, f = 1 mm; d = 0.5 mm. Photographs (a, b): Keita Matsumoto, BMNH.