Triunfus carvalhoi, BARROs & Barão & Grazia, 2020

BARROs, Lurdiana D., Barão, Kim R. & Grazia, Jocélia, 2020, Systematics of the Mecocephala group (Hemiptera: Heteroptera: Pentatomidae) based on a phylogenetic perspective: Inclusion of Hypanthracos, description of three new genera, and redescription of Ogmocoris, Arthropod Systematics & Phylogeny 78 (2), pp. 321-360 : 345-347

Triunfus carvalhoi sp.n.

Figs. 14 A– F, 16 B, D – F, 17 , 18 Fv, L, 20 B, D, H, J, L

Diagnosis. Valvifers 8 shorter than laterotergites 9. Valvifers 9 swollen, posterior margins convex. Lateral scle- rotized areas of valvulae 9 well-defined, sclerotized. Diameter of proximal ductus receptaculi equal to diameter of median wall of vesicular area. Capsula seminalis equal in length to pars intermedialis, with a process.

Description. Measurements: Table 4. Colouration: Gen- eral colour dark brown dorsally and ventrally; densely punctate. Head and clypeus with ferruginous callosities; antennomeres uniformly brownish; brown blotches on antenniferous tubercles and maxillary plates. Sublateral margins of pronotum and lateral margins of coria fer- ruginous. Pro-, meso-, metasternum and evaporatorium dark brown. Coxae, trochanters, and apical half of each femur ferruginous, tibiae and tarsi brown. Connexivum ferruginous. Abdominal sternites brown, sublateral band from prosternum to abdominal sternite 7 ferruginous. Spiracles dark brown. Trichobothria brown. Head ( Figs. 14A , D–E, 20D, F, H): Anteocular processes absent. Proportions of antennomeres: 1> 2 <3> 4 <5 ( Figs. 14D , 18 Fv, 20H). Thorax: Pronotum with anterior an- gles not produced; anterolateral margins straight, smooth; humeral angles not produced ( Figs. 14A , 20J ). Gyrifica- tion of evaporatorium with high wrinkles; anterolateral margin of each evaporatorium rounded; outer margin of each metapleural evaporatorium concave ( Fig. 18L ). Membrane with veins linear, some bifurcated basally. Hemelytra not surpassing apex of abdomen. Abdomen: Posterolateral angles of each connexivum not produced ( Figs. 14A , 20L ). Female terminalia ( Figs. 14F , 16B, D ): Valvifers 8 shorter than laterotergites 9, partially cover- ing valvifers 9. Laterotergites 8 triangular, straight api- cally. Valvifers 9 swollen, leveled, relative to the position of segment X; posterior margins convex, lateral margins with 1 + 1 processes. Laterotergites 9 triangular, obtusely rounded apically ( Fig. 16B ). Female genitalia: Ectoder- mal ductus ( Fig. 16 E–F): Diameter of proximal ductus receptaculi equal to diameter of median wall of vesicular area. Annular flanges divergent. Pars intermedialis recti- linear. Capsula seminalis globose, equal in length to pars intermedialis, with a process.

Male. Unknown.

Etymology. This species is named in honour to Dr. Ger- vásio Silva Carvalho, specialist dedicated to phylogeny and biogeography of Neotropical Auchenorrhyncha.

Type material: Holotype ♀, ‘ BRAZIL, Rio Grande do Sul, Tri- unfo | Projeto Sitel/Corsan | 7 – 11.i.2002 | Equipe do Projeto leg.’ | ‘ 17302-1 MCTP’ ( MCTP). – Paratype: ♀, ‘ BRAZIL, Rio Grande do Sul, Capão do Leão’ ( UFRG) <illustrated specimen> .

Distribution. Brazil: Rio Grande do Sul ( Fig. 17 ).

Figures

Fig. 14. Triunfus carvalhoi sp.n. ♀: A: dorsal; B: ventral; C: lateral; D: antenna, dorsal view, antennomere 3 convex (red arrow); E: head, ventral view, showing of labiomere 1 (red arrow); F: abdomen. Scale bars:A–C, F = 2.0 mm; D–E = 0.5 mm.

← Fig. 16. Liscocephala gen.n. and Triunfus gen.n. ♀: L. fumosa: A, C: female terminalia. T. carvalhoi: B, D: female terminalia; E, F: female receptaculum seminis and ausenwand. T. incarnatus: G: female receptaculum seminis and ausenwand. Scale bars = 0.5 mm.

Fig. 17. Map of geographical distribution. — Colors: yellow – Chimerocoris luridus sp.n.; purple – Hypanthracos meridionalis; red – Liscocephala fumosa sp.n.; green – Ogmocoris Mayr, 1864; blue – Triunfus gen. n.

← Fig. 18. Representation and comparison of head and thoracic characters. A–C: head, dorsal view; D–E: head and prothorax, lateral view (antennomeres not showing due to edition of photo); F: schematic drawing showing the antennomeres; G–S: external scent efferent system; G–N: meso- and metapleura, ventral view; G: schematic drawing showing the parts of eses; O–S: SEM images of characters of eses of mestasternal glands. — (A, Fi, H): Hypanthracos meridionalis; (B, N): Mecocephala magna; (C): Paramecocephala foveata; (D, M): Tibraca limbativentris; (E, S): Hypatropis inermis; (Fii, I): Chimerocoris luridus; (Fiii, J): Ogmocoris hypomelas; (Fiv, K): Liscocephala fumosa; (Fv, L): Triunfus carvalhoi; (O): Glyphepomis adroguensis; (P): Paramecocephala fusca; (Q): Pedinonotus catarinensis; (R): Glyphepomis setigera; Scale bars: A–E, H–N = 0.5 mm; O–S = 100 μm.

Fig. 20. Comparative figure of Liscocephala and Triunfus. A–B: habitus dorsal (antennomeres and legs not showing due to edition of photo); C –D: head and pronotum, dorsal view; E–F: head and prothorax, lateral view; G–H: right antenna; I–J: pronotum, dorsal view; K–L: hemelytra. — (A, C, E, G, I, K): Liscocephala fumosa; (B, D, F, H, J, L): Triunfus carvalhoi. Scale bars: A–C, K–L = 2.0 mm; C–F, I–J = 1.0 mm; G–H = 0.5 mm.