Aguana imbricata (Signoret, 1854)

Mejdalani, Gabriel, Domahovski, Alexandre C. & Cavichioli, Rodney R., 2019, The sharpshooter genus Aguana: taxonomic notes, two new species from Brazil, the female of A. imbricata, and updated key (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 4577 (1), pp. 91-102 : 92-94

Aguana imbricata (Signoret, 1854)

( Figs 1–29 )

Length. Males 10.0–10.8 mm (n = 5). Females 9.2–9.6 mm (n = 4).

Head and thorax ( Figs 1–3 ) much as described by Young (1977: 37) for the genus and in the diagnosis given above. Forewing venation ( Figs 16–19 ), especially crossveins, shows considerable intraspecific variation. Color as in Figs 1–3 and 16–19 ; apical half of crown with median triangular yellowish-brown or orange marking; forewing vermiculations and spots predominantly yellowish-brown and large posterior spots predominantly yellow.

Male terminalia. Pygofer ( Figs 4–6 ), in lateral view, moderately produced posteriorly; posterior margin broadly rounded; surface with numerous small macrosetae distributed mostly from basiventral third to apex; each lobe with long and acute apical process. Style ( Fig. 8 ), in dorsal view, with apex truncate. Aedeagal apical processes varying intraspecifically: (1) directed dorsally and divergent ( Figs 10, 11 ); (2) curved and directed anteriorly ( Figs 12, 13 ); and (3) curved and directed inferiorly ( Figs 14, 15 ). Paraphyses ( Fig. 9 ), in ventral view, with rami long, acute, and divergent from each other. Other features as in Young’s description (1977: 37).

Female terminalia. Sternite VII ( Figs 20, 21 ) not strongly produced posteriorly; in ventral view, with posterior margin convex and bearing median projection; apex of this projection emarginate. Pygofer ( Figs 20, 21 ), in lateral view, well produced posteriorly; distal margin obliquely truncate; apex subacute; ventral margin slightly sinuous; small macrosetae distributed on most of surface, except basiventrally and on basidorsal two-thirds. First valvifer ( Figs 22, 23 ), in lateral view, subtrapezoidal, with conspicuous, basiventral spiniform process, posterior margin slightly sinuous. First valvula ( Figs 23, 24 ), in lateral view, with dorsal and ventral margins approximately parallel; apex acute; dorsal sculptured area strigate, extending from basal portion to apex of blade; ventral sculptured area scale-like, restricted to apical portion of blade; ventral interlocking device restricted to basiventral half of blade; in ventral view, base of valvula distinctly expanded outwards. Second valvula ( Figs 25–27 ), in lateral view, distinctly expanded beyond basal curvature; apex subacute; preapical prominence indistinct; dorsal margin with about 50 mostly triangular continuous teeth; denticles distributed on teeth and on apical portion of blade, except on apex (dorsal dentate apical portion slightly longer than ventral portion); ducts extending towards teeth and apex of valvula (basalmost six teeth or so do not receive ducts). Gonoplac ( Figs 28, 29 ) of the usual Cicadellinae type: in lateral view, with basal half narrow and apical half distinctly expanded; apex obtuse; denticuli and setae distributed on apical portion and extending anteriorly along ventral margin.

Material examined. 1 ♂, “ Brasil, PR [State of Paraná], Antonina \ Res. [ Reserva ] Rio Cachoeira , 50m \ 25.316˚ S 48.696 ˚W \ 25-26.III.2017 Sweep \ A.C. Domahovski leg.” ( DZUP) ; 1 ♂, same data as preceding, except “ 23-27.X.2017 ” ( DZUP) ; 2 ♂, same data as preceding, except “Malaise \ Entomologia UFPR ” ( DZUP) ; 2 ♂, “ Brasil, PR, Antonina \ RPPN [ Reserva Particular do Patrimônio Natural ] - Guaricica , 50m \ 25.316˚ S 48.696 ˚W \ 23-27.X.2017 Sweep \ A.C. Domahovski leg.” ( DZUP) ; 1 ♂, “ANTONINA – PR \ Reserva Sapitanduva \ Brasil 06.X.1986 \ Lev. [Levantamento] Ent. [Entomológico] PROFAUPAR \ MALAISE” ( DZUP) ; 1 ♂, same data as preceding, except “ 24.XI.1986 ” ( DZUP) ; 1 ♂, same data as preceding, except “ 15.XII.1986 ” ( MNRJ) ; 1 ♀, same data as preceding, except “ 21.IX.1987 ” ( MNRJ) ; 2 ♂, “BRASIL-PR, Antonina \ RPPN Reserva Natural \ Guaricica ( SPVS), Trilha dos \ Fornos , Coord. [ Coordenadas ] 25˚17’53”S, \ 48˚39’26”W 167 m a.s.l., \ 16- 20.IV.2018 A.P.Pinto leg.” ( DZUP) ; 1 ♂ and 4 ♀, “Piraquara, Paraná \ Mananciais da Serra \ 02.XII.2011 25˚29’S \ 48˚58’W 1060m \ P.C. Grossi leg.” ( DZUP) ; 1 ♂, “S. [São] JOSÉ [dos] PINHAIS – PR \ Ser. [ Serra ] [do] Mar Br 277 km 54 \ Brasil 04.XII.1987 \ Lev. [Levantamento] Ent. [Entomológico] PROFAUPAR\ MALAISE” ( DZUP) ; 1 ♂, “ Brasil, Paraná, São José \ dos Pinhais, Br 277 km 54\ ( Torre – Telepar ) 1060m \ 25˚33’18”S 48˚58’22”W \ Malaise 01-15.X.2015 \ ACD & RRC leg.” ( DZUP) ; 1 ♂, “25˚50’S 790 m \ 48˚56’W XI.2003 \ Paraná – Brasil \ G.R.A. Melo col.” ( DZUP) ; 1 ♂, “Brasil, Paraná, Estrada \ dos Castelhanos, \ 25˚51’S 48˚65’W 790m, \ 18x- 2.xi.2003, \ G. Melo, arm. [armadilha] malaise” ( DZUP) ; 1 ♂, “Quatro Barras – PR \ Brasil 18-X-65 \ P.J.S. Moure ” ( DZUP) ; 1 ♂, “ DEPT ° [Departamento] ZOOL. [Zoologia] \ UF-PARANÁ”; “PIRAQUARA – PARANÁ \ BRASIL 5/XI/72 \ Mielke & Sakakibara” ( DZUP) ; 1 ♂, “Joinville, Santa Catarina \ Brasil \ 03/XII/2005 \ Löwenberg-Neto, P. leg.” ( DZUP) .

Remarks. Aguana imbricata can be distinguished from the remaining species of the genus by the smaller size (9.2–10.8 mm), median triangular yellowish-brown or orange marking on apical half of crown ( Fig. 1 ), predominantly yellowish-brown vermiculations and spots of the forewings ( Figs 1, 2 ), elongate apical aedeagal processes ( Figs 10–15 ), and posterior margin of female sternite VII bearing median projection ( Fig. 20 ). This species is similar to the poorly known A. russata , from which it can be distinguished by the unbranched aedeagal processes. The latter show a great deal of intraspecific variation ( Figs 10–15 ).

Figures

FIGURES 1–15. Aguana imbricata (Signoret, 1854), male. 1. Body, dorsal view. 2. Body, lateral view. 3. Face, frontal view. 4. Genital capsule, lateral view. 5. Pygofer process, ventral view. 6. Pygofer process, posterior view. 7. Valve and subgenital plate, ventral view. 8. Connective and style, dorsal view. 9. Paraphyses, ventral view. 10. Aedeagus, lateral view. 11. Aedeagus, ventral view. 12–15. Variations in the aedeagal processes.

FIGURES 16–19. Aguana imbricata (Signoret, 1854), forewing. Variations in the venation.

FIGURES 20–29. Aguana imbricata (Signoret, 1854), female. 20. Distal portion of abdomen (contour of sternite VII highlighted), ventral view. 21. Distal portion of abdomen, lateral view. 22. First valvifer, lateral view. 23. First valvifer and first valvula, lateral view. 24. Apical portion of first valvula. 25–27. Second valvula. 25. Lateral view. 26. Teeth at basal portion. 27. Apical portion. 28. Second valvifer and gonoplac, lateral view. 29. Apical portion of gonoplac.