Ferricixius davidi Hoch & Ferreira, 2012

Santos, Júlio César Do Carmo Vaz, Hoch, Hannelore, Zampaulo, Robson De Almeida, Simões, Matheus Henrique & Ferreira, Rodrigo Lopes, 2023, Adaptive shifts in Neotropical planthoppers: new troglobitic species and the first surface species of Ferricixius Hoch & Ferreira, 2012 (Hemiptera: Fulgoromorpha Cixiidae) from Brazilian caves, Zootaxa 5330 (3), pp. 375-397 : 390

Ferricixius davidi Hoch & Ferreira, 2012

( Figs 1D; 12 D; 13A–E; 14A–D; 15A–C; 16A–C; 17A–B)

Type material. Holotype: Male, Brazil, Minas Gerais. Itabirito municipality, MP-008 cave, 20.x.2011, (Oliveira, M.P.), ES, ( ISLA 1768).

Material examined. 2 ♀♀ ( Figs. 13, 14, 15) and 1 ♁, same data as holotype except for ( ISLA 100992) .

Coloration (preserved specimen): Pale yellow (89) contrasting with some areas which are light yellow (86), tegmina hyaline with dark yellowish white (92) regions.

Body length. Female (examined): 2.8–3.2 mm (n =2).

Head. Vertex ( Fig. 13A): Apical compartment wider than medially long; caudal border of vertex irregular; subapical carina elongated medially; apical transverse carina elongated medially and evanescent laterally. Frons: In lateral view ( Fig. 13B) semicircular, fully curved from base of vertex to frontclypeus suture. Compound eyes and ocelli ( Figs 13B; 13b 1; 13D): Compound eyes vestigial (an extremely reduced, red spot can be observed in living specimens), lateral ocelli vestigial. Antennae ( Figs 13a 1; 13A–B): Short scape, globular pedicel with evident sensory plates; pedicel with flagellum and arista; base of arista with two setae apically.

Thorax. Pronotum ( Figs 13A–B). Mesonotum ( Figs 13A–B). Tegmina (forewings) ( Fig. 13C): Length (0.867), very reduced; vein ScP+ R, MP present, CuA, CuP, and Pcu present, tegmina with crossveins distally between ScP+ R, MP, and CuP. Thoracal sclerite at base of forewing ( Fig. 13D). Hind legs ( Fig. 13E): Hind tibia with 4 lateral spines and 6 apical teeth; first tarsomere with 4 apical teeth and second tarsomere with 2 apical teeth.

Female genitalia ( Figs 15A–C). Segment X short; curved dorsally and flattened ventrally. The segment IX as in the diagnosis of the genus. Ovipositor long and arc-shaped, not surpassing segment X; Gonocoxa VIII exhibits a deep groove with thin elongated lines side by side.