Morulaptoma nigra ( Chevrolat, 1876 ) Opitz, 2019

Opitz, Weston, 2019, Classification, Natural History, and Evolution of the Subfamily Peloniinae (Coleoptera: Cleroidea: Cleridae). Part XIV. Taxonomy of the South American Genera Corinthiscus Fairmaire and Germain, Morulaptoma Opitz, New Genus, and Petorca Opitz, New Genus, The Coleopterists Bulletin 73 (2), pp. 329-342 : 336-338

Morulaptoma nigra ( Chevrolat, 1876) , new combination

( Figs. 3, 7, 12 , 19–23 , 25 )

Pelonium nigrum Chevrolat 1876: 38 . Lectotype. Ƌ. Here designated. Type locality:

BRAZIL. Santa Rita, D. Sahlberg ( MNHN). Chevrolat did not specify the number of specimens involved in his description. Therefore, I invoke Recommendation 73F of the ICZN

and designate a lectotype for this nominal species.

Corinthiscus niger ( Chevrolat, 1876) . Corporaal 1950.

Diagnosis. The holotype differs from that of M. canuta by lacking the grey patch of setae on the elytral disc.

Redescription. Size: Length 4.0 mm; width 1.5 mm. Form: As in Fig. 25 . Color: Black, except elytral disc with pale anterior bullule and apex narrowly pale. Head: Funicular antennomeres oblong or quadrate, antennomere 9 longer than combined length of funicular antennomeres, antennomeres 9 and 10 oblong-triangular ( Fig. 3 ), antennomere 11 oblong; frons wider than width of eye (FW/EW = 25/20). Thorax: Pronotum oblong (PW/PL = 68/75), lateral margins with well-defined tubercle ( Fig. 7 ), disc coarsely punctate; elytral asetiferous punctation extending to elytral apices, EL/EW = 175/45; anterior margin of protibial not spinose. Abdomen: Pygidium scutiform.

Distribution. Morulaptoma nigra is known only from Brazil ( Fig. 23 ).

Figures

Figs. 1–12. Morphological structures. Male antenna: 1) Corinthiscus insignicornis; 2) Morulaptoma canuta; 3) Morulaptoma nigra; 4) Petorca denticolla. Pronotum 5) C. insignicornis; 6) M. canuta; 7) M. nigra; 8) P. denticolla. Elytron. 9) C. insignicornis; 10) P. denticolla; 11) M. canuta; 12) M. nigra.

Fig. 19. Corinthiscus insignicornis, prothoracic venter.

Figs. 20–21. Hypothesized phylogenies of Pelonium, Muisca, Cregya, Morulaptoma, Corinthiscus, and Petorca.

Fig. 22. Bootstrap consensus tree of Pelonium, Muisca, Cregya, Morulaptoma, Corinthiscus, and Petorca

Fig. 23. Known geographical distribution of Corinthiscus, Morulaptoma, and Petorca species.

Figs. 24–27. Habitus. 24) Corinthiscus insignicornis (magnification 19X); 25) Morulaptoma nigra (magnification