Geitogonalia buccina, Cavichioli & Rendón-Mera & Domahovski & Mejdalani, 2018

Cavichioli, Rodney R., Rendón-Mera, Diana I., Domahovski, Alexandre C. & Mejdalani, Gabriel, 2018, Three new Brazilian species of the sharpshooter genus Geitogonalia Young (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 4531 (4), pp. 578-588 : 579-582

Geitogonalia buccina sp. nov.

( Figs 1–14 )

Diagnosis. Aedeagus ( Figs 8, 9 ) shaft elongate, apical third strongly curved ventrally, apex with pair of strong horn-shaped processes directed anteriorly, shorter than shaft apical third.

Measurements (in mm; 2 ♂, 2 ♀). Length of body ♂ 6.3–6.7, ♀ 6.9–7.2.

Male. Coloration. Anterior dorsum (crown, pronotum, and mesonotum) yellow ( Figs 1, 2 ). Crown with black transverse stripe posteriorly, broadening on each side of midline between ocellus and eye. Pronotum with black transverse stripe on posterior margin. Mesonotum with black transverse narrow anterior stripe continuous with posterior stripe of pronotum. Mesoscutellum entirely yellow. Forewing ( Figs 1, 2 ) yellow near base; corium and clavus green and yellowish-green along anal margin; apex and appendix smoky; veins yellow, but R brown along most of its length. Face ( Fig. 3 ) yellow; gena black on its posterior half (also posterior to eye), continuing black stripe on crown; lorum black; clypeus with irregular black boundary; rostrum black. Thorax lateral and ventral portions yellow. Legs yellowish-orange, protibia brownish, mesofemur black. Abdomen black.

Structure. Head ( Figs 1–3 ) moderately produced, median length of crown approximately 6/10 of interocular width and 4/10 of transocular width; ocelli located slightly behind imaginary line between anterior eye angles; coronal suture slightly visible. Other features as in the descriptions of Young (1977: 524) and of G. viridis Mejdalani & Cavichioli (2014: 374) .

Male genitalia. Pygofer ( Fig. 4 ), in lateral view, well produced posteriorly; posterior margin broadly rounded, slightly angulated subapically; without processes; macrosetae distributed on posterior half, thicker and longer macrosetae on ventral half; thin setae present ventrally on anterior half. Valve ( Fig. 5 ), in ventral view, with lateral margins subrounded, constricted medially. Subgenital plate ( Fig. 5 ), in ventral view, triangular, not fused to its counterpart basally, outer lateral margin sinuous, gradually narrowing towards apex, with uniseriate row of macrosetae intercalated with thin setae; in lateral view, not extending posteriorly as far as pygofer apex. Connective ( Fig. 6 ), in dorsal view, T-shaped, stalk long and narrow, longer than arms, keeled dorsally. Style ( Fig. 6 ), in dorsal view, with apophysis elongate, distinctly longer than apodeme, extending approximately as far posteriorly as connective; with lobe on outer median portion bearing single elongate seta, apex narrow, obliquely truncate. Paraphyses ( Fig. 7 ) present but very small, consisting of well sclerotized basal transverse plate and pair of weakly sclerotized rami with sclerotized apices, each curved inwards and directed upwards. Aedeagus ( Figs 8, 9 ) without preatrial process; dorsal apodeme elongate, about 2/3 as long as shaft and about as wide in lateral view, apex sinuous and narrow; shaft elongate, apical third strongly curved ventrally, apex with pair of strong hornshaped processes directed anteriorly, less than one-third shaft length.

Female. Coloration. As in male, with additional black macula medially at base of frons, visible from dorsal and anterior view, and may present transverse black stripe anteriorly on pronotum, continuous with that of crown.

Structure. As in male.

Female genitalia. Abdominal sternite VII ( Figs 10, 11 ), in ventral view, slightly longer than wide, posterior margin with slight medial dentiform projection. “Internal” sternite VIII, in dorsal view, without distinct sclerotized areas. Pygofer ( Fig. 11 ), in lateral view, strongly produced posteriorly, posterior margin narrowly rounded, macrosetae located mostly on posterior portion and ventral margin. First valvifer ( Fig. 12 ) approximately as long as wide. First valvula ( Fig. 12 ) slightly curved dorsally, with apex acute; dorsal sculptured area strigate, extending from basal portion of blade to apex; ventral sculptured area scale-like, restricted to apical portion of blade; ventral interlocking device restricted to basal half of blade, located along ventral margin with distal portion directed dorsally. Second valvula ( Fig. 13 ) moderately expanded beyond basal curvature; dorsal margin moderately convex; ventral margin with slight preapical prominence; apex subacute; blade with about 27 subtriangular continuous teeth; denticles distributed on teeth and on dorsal and ventral apical portions of blade; ducts extending to apical portion of blade and to teeth or terminating below them (about seven basal-most teeth do not receive ducts). Gonoplac ( Fig. 14 ) with basal half narrow and apical half distinctly expanded; apex obtuse; blade with many tiny spiniform processes on apical portion and extending anteriorly along ventral margin.

Etymology. The specific epithet, buccina (noun in apposition), is Latin for “horn.” It refers to the aedeagus with long horn-shaped apical processes ( Figs 8, 9 ).

Material examined. Holotype Ƌ: Southeastern Brazil , state of Rio de Janeiro: “P. [Parque] N. [Nacional] Itatiaia, RJ [Rio de Janeiro], Brasil \ 22°27’16”S 44°36’29”W \ 800–1300m 23/IX/2011 luz \ R.R.Cavichioli leg.” (DZUP). Paratypes: 1 ♀: “P. N. Itatiaia, RJ, Brasil \ Trilha do Hotel Simon \ 22°27’16”S 44°36’29”W \ 800– 1300m 24/IX/2011 \ R.R.Cavichioli leg.” ( DZUP) ; 1 ♀: “ BRAZIL: \ Minas Gerais \ Delfim Moreira , \ 1100m. ii.1972.; F.M.Oliveira \ B.M.1972–541” ( DZUP) ; 2 ♂: “ Brasil, RJ, P. N. Itatiaia, \ Travessia Rui Braga \ 22°25’50.4”S 40°37’12.6”W \ 1100m 12/X/2013 sweep \ D.M. Takiya, C. Moraes \ C. Gonçalves” (1 ♂ DZRJ and 1 ♂ MNRJ) ; 1♀: “ Brasil, RJ, P. N. Itatiaia,\ Hotel Simon \ 22°26’14.4”S 44°36’28.2”W \ 804m 7/ VI /2013 sweep \ D.M. Takiya, C. Moraes \ C. Gonçalves, A. Silva” ( DZRJ) ; 4♀: “ Biota FAPERJ \ 2.JUL [julho]— 3 AGO [agosto]. 2015 \ COLETA 1”; “ BRASIL: RJ Itatiaia, PNI [ Parque Nacional do Itatiaia ] \ Complexo do Maromba , \ Travessia Ruy Braga , PNI-M2B \ 22°26’07.50”S \ 44°37’33.20”W, 1234m a.s.l. ” (2 ♀ DZRJ and 2 ♀ MNRJ) .

Remarks. This species is similar in coloration to G. tetracorni sp. nov., whereas its aedeagus is similar to that of G. viridis , except for the shape of the apical processes ( Figs 8, 9 ).

Figures

FIGURES 1–9. Geitogonalia buccina sp. nov., male holotype: 1–2. Habitus, dorsal and lateral view, respectively. 3. Head, frontal view. 4. Pygofer, lateral view. 5. Valve and subgenital plate, ventral view. 6. Connective and style, dorsal view. 7. Paraphyses, dorsal view. 8. Aedeagus, lateral view. 9. Aedeagus, ventral view. Scale bars in mm.

FIGURES 10–14. Geitogonalia buccina sp. nov., female: 10. Apical portion of abdomen, ventral view. 11. Apical portion of abdomen, lateral view. 12. First valvifer and first valvula, lateral view, with detail of dorsal and ventral sculptured areas at apical portion. 13. Second valvula, lateral view, with details of apical portion and teeth at basal third and subapical portions. 14. Second valvifer and gonoplac, lateral view, with detail of apical portion. Scale bars in mm.