Corinthiscus insignicornis Fairmaire and Germain, 1861

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 : 333-334

Corinthiscus insignicornis Fairmaire and Germain, 1861

( Figs. 1, 5, 9 , 13–19, 21–23 , 24 )

Corinthiscus insignicornis Fairmaire and Germain 1861: 4 . Lectotype, gender unknown, here designated. Concepción, Chile (MNHN). Fairmaire and Germain did not specify the number of specimens that were involved in their description. Therefore, I invoke Recommendation 73F of the ICZN and designate a lectotype for this nominal species. Corporaal 1950; Solervicens 2008.

Pelonium tuberculipenne Schenkling 1900: 406 .

Pelonium tuberculipenne variety dimidiatus Schenkling 1900: 406 .

Falsopelonium impressipenne Pic 1950: 2 .

Diagnosis. Specimens of this species have a subbasal umbo ( Figs. 9 , 17 ). This characteristic will separate the members of this species from the superficially similar species of the genus Petorca Opitz , new genus.

Redescription. Size: Length 4.0 mm; width 1.3 mm. Form: As in Fig. 24 . Color: Forebody black, hind body and legs brown, elytral disc with narrow, white, crescent-shaped bullule. Head: Funicular antennomeres quadrate or transverse,

18) Ungues.

antennomere 9 longer than combined length of funicular antennomeres, antennomeres 9 and 10 oblong-triangular ( Fig. 1 ), anterior margins concave, antennomere 11 oblong, anterior margin undulate; frons wider than width of eye (FW/EW = 35/17). Thorax: Pronotum oblong (PW/PL = 65/ 80), lateral margins with well-defined tubercle ( Fig. 5 ), disc coarsely punctate; elytra with basal and sub-basal umbo, with crescentic epipleural bullule, asetiferous punctures ending at elytral middle; EL/ EW 200/50; anterior protibial margin not spinose. Abdomen: Pygidium scutiform; phallobasic lobes small, phallobasic struts and phallobasic apodeme particularly long; spicular apodemes not fused.

Variation. Size: Length 3.5–7.0 mm; width 1.0–2.0 mm. In some specimens, the basal half of the elytron is castaneous. The forebody may be black or red.

Natural History. One specimen was collected on Araucaria Juss. (Araucariaceae) at 1,209 m elevation. Other specimens were captured in a forest dominated by Nothophagus Blume ( Nothofagaceae ). Others were collected in a Malaise trap set at 300 m elevation.

Distribution. I examined 13 specimens from ( Fig. 23 ): ARGENTINA: Provincia R´ıo Negro, El Bolson, 2-I-1962, A. Kovacs; Provincia Neoquén, no other information noted. CHILE: Región Araucan´ıa, Malleco Province, 4 km W Victoria, 300 m, 26-31-XII-1976, Malaise trap, S. Peck; 40 km W Angol, Nahuebuta National Park, 9-XII-1984 - 17- XI-1985, 1500 m, Nothofagus-Araucaria forest, S. & Peck. Región Coquimbo, Provincia Arauco, Pichinahue, 1-10-I-1953, Luis Pe~ na; Región Bio ~

Bio, Nubles, Arauco, Concepción ; Mt. Longuimay Road , 38°26.533S / 071°30.879W, 19-XII-2002, 3964 ′, Araucaria ; Región Maule, Tregualemu, 5 km S Chovellen, 35°49 ′ S 72°46 ′ W, 2-XII-1953, Luis Pe ~ na; Talca, [?-]X-XII-1979, L. E. Pe ~ na; Talca, Alto de Vichea , 16-XII-1976, L. E, Pe ~ na; Región Metropolitana, Vilches Alto, I-1996, Perez Diaz; Solervicens (2002) reports the following Chilean distribution records for this species: Región Maule; Región Araucan´ıa, Malleco, Cautin; Región Los Rios, Valdivia; Región Los Lagos, Osorno, Llanquihue, Chiloé. Specimens are deposited in AMNH, CMNC, FMNH, FSCA, MNHN, WFBM , and WOPC.

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.

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

Figs. 17–18. Corinthiscus insignicornis. 17) Elytra;