Omophoita sexnotata ( Harold, 1876 )

Begha, Bruno Piotrovski, Anjos, Camila Alves Dos, Santos, Mateus Henrique & Prado, Laura Rocha, 2023, Checklist of Omophoita Chevrolat, 1836 (Coleoptera: Chrysomelidae: Galerucinae: Alticini) and diagnoses for some species from southern Brazil: notes on the taxonomic history, redescriptions and new records, Zootaxa 5357 (3), pp. 375-397 : 389-391

Omophoita sexnotata ( Harold, 1876)

( Figs 11 , 18 , 22 , 28 )

References: Harold 1876: 120; Blackwelder 1945: 708; Bechyné 1951a: 109; Bechyné 1951b: 65; Scherer 1960: 257; Bechyné 1956: 1038; Bechyné 1958a: 676 (6-notata); Bechyné 1955a: 4 ( Homophoeta ).

Type: Homophoeta sexnotata Harold 1876: 120 ; Brazil, Rio de Janeiro Mendes. Not located .

Length: 6,96–7,28 mm.

Head: reddish-brown. Large pale macula extending to the vertex, rounded. Two pale maculae visible at the lower portion of the frons. Mouthparts: labrum with 10 setae. Antennae: reddish-brown.

Prothorax: pronotum orangish. Metathorax and mesothorax: with the same color as the head. Elytra: elytral integument reddish-brown. Six large rounded pale maculae visible; maculae equidistant, two in the proximal portion of the elytra, two in the median portion and two in the distal portion. Scutellum: triangular, posterior portion rounded. Legs: reddish-brown.

Abdomen: reddish-brown. Male Aedeagus Median lobe ( Fig. 22 ): Ventral sclerite not visible in dorsal view. Apical hood rounded; dorsal median process visible; proximal portion of the dorsal median process wider than the apex; with two broad and parallel projections at the apex, semi-triangular, base of the projections wider than the apex. Dorsal lateral sclerite visible, subtrapezoid, poorly defined. Oblique dorsal process ventrally curved; apex visible in dorsal view, rounded. Female Tignum ( Fig. 28 ): Base wider than the apex; hood-like structure in the median portion present ( Fig. 4 ); median portion opaque; distal portion slender, lateral margins divergent.

Specimens studied: BRAZIL: Minas Gerais: Pouso Alegre , Pereira & Medeiros I.1960 1 ♁ ( MZUSP) ; Paraná: Ponta Grossa, Distrito de Itaiacoca , Almeida, M. C. 20.XI.2009 ; Rio de Janeiro: Itatiaia, Dirings II.1955 1 ♀, 1 ♁ ( MZUSP) ; São Paulo: Barueri, Papavero & Lenko, 10.VII.1963 ( MZUSP); Campos do Jord „o, Pereira & Medeiros, 4.VIII.1953 ( MZUSP); Caraguatatuba, Dirings, VII.1965 ( MZUSP); Cássias dos Coqueiros, Barreto, M. P., X.1954 ( MZUSP); Monte Alegre, L. Trav. F. & Almeida 27.X.1942 ( MZUSP); S„o Paulo, Dirings X.1956 1F ( MZUSP) .

Observed distribution in the Southern Brazil: Paraná (Jundiaí do Sul, Ponta Grossa) ( Fig. 35 ).

Figures

FIGURES 5–11. Dorsal view of the observed Omophoita species from southern Brazil. (5) O. communis (male). (6) O. equestris (female) (7) O. sesquilunata (male). (8) O. magniguttis (female). (9) O. octoguttata (female). (10) O. personata (male). (11) O. sexnotata (male).

FIGURES 12–18. Lateral view of the observed Omophoita species from southern Brazil. (12) O. communis (male). (13) O. equestris (female). (14) O. sesquilunata (male). (15) O. magniguttis (female). (16) O. octoguttata (female). (17) O. personata (male). (18) O. sexnotata (male).

FIGURES 19–22. Median lobe of the observed Omophoita species from southern Brazil, dorsal view. (19) O. communis. (20) O. equestris. (21) Morphology shared by O. sesquilunata and O. personata. (22) Morphology shared by O. magniguttis and O. sexnotata. Scale bar 500 μm.

FIGURES 23–28. Tignum of the observed Omophoita species of southern Brazil, dorsal view. (23) O. communis. (24) O. equestris. (25) O. sesquilunata. (26) O. magniguttis. (27) O. personata. (28) O. sexnotata. Scale bar 500 μm.

FIGURES 3–4. Generalized morphology of male median lobe and female tignum of Omophoita, indicating structures relevant for the systematic discussion. (3) Median lobe, dorsal view. (4) Tignum, dorsal view. (VNS), ventral sclerite; (PDM), projections of the dorsal median process; (LDS), lateral dorsal sclerite; (DMP), dorsal median process; (ODP), oblique dorsal process; (APH), apical hood; (BSH), basal hooks; (FRM), basal foramen; (DPT), distal portion of the tignum; (HDL), hood-like structure; (VLP), vaginal palpus; (BPT), basal portion of the tignum.

FIGURES 29–35. Observed geographic distribution of the Omophoita species from southern Brazil, showcasing the brazillian biomes. (29) O. communis. (30) O. equestris. (31) O. magniguttis. (32) O. octoguttata. (33) O. personata. (34) O. sesquilunata (35) O. sexnotata. Shapes: circle, location data from published literature and pinned specimens; diamond, data from the iNaturalist database; triangle, data from the SpeciesLink.