Acusana longa, Domahovski & Cavichioli, 2019

Domahovski, Alexandre Cruz & Cavichioli, Rodney Ramiro, 2019, Acusana DeLong (Hemiptera: Cicadellidae: Gyponini), a genus not previously recorded in Brazil: description of four new species for the Brazilian fauna, Zootaxa 4571 (4), pp. 531-543 : 536-540

Acusana longa sp. nov.

Figs 37 ¯58, 75

Diagnosis. Pygofer (Fig. 44) apex with triangular protrusion. Subgenital plate (Fig. 45) elongated. Style (Fig. 47) with blade curved in right angle near base and then straight, ventral margin not expanded ventrally. Aedeagus (Figs 49, 50) shaft very long, cylindrical with pair of apical processes short, directed anterad.

Description. Length 7.2¯ 7.5mm (male), 7.9¯ 8.2mm (female). Head ( Fig. 37 ), in dorsal view, ocelli slightly closer to posterior than anterior margin of crown. Head (Fig. 38), in frontal view, with clypeus ca. 1.5 times longer than wide, lateral margins divergent towards apex. Head (Fig. 39), in lateral view, crown-face transition with striae near eye margin and two carinae on mid-portion. Forewing (Fig. 40) appendix moderately developed, as wide as first apical cell maximum width. Profemur PV row formed by 4–5 setae. Protibia, AD row formed by only very short setae. Other characteristics as described for A. adunca and generic description.

Coloration. Head and thorax ( Figs 37 , 75) pale-yellow. Forewing (Fig. 40) with apex of first, second and third apical cells gray. Legs and abdomen yellow. Other characteristics as described for A. adunca .

Male terminalia. Sternite VIII (Fig. 41), in ventral view, rectangular, 1.5 times wider than long; posterolateral margins rounded; posterior margin straight. Valve (Fig. 42), in ventral view, 1.8 times wider than long; anterior margin straight; lateral margins parallel; posterior margin almost straight, looking deeply excavated. Pygofer (Fig. 43), in lateral view, twice as long as maximum height; ventral margin straight; apex truncated; macrosetae dispersed on posterodorsal quadrant; apex in dorsal view (Fig. 44), with triangular-shaped protrusion. Subgenital plate, in lateral view (Fig. 43), surpassing pygofer apex; in ventral view (Fig. 45), elongated, 4.6 times longer than wide, wider near base and tapered toward apex; microsetae on ventral surface, near external margin; apex rounded. Connective (Fig. 46) in posterior view, as wide as long; stalk elongate, as long as arm length and enlarged apically; in lateral view (Fig. 49) strongly curved ventrally; with small and translucent keel dorsally, between arms. Style, in dorsal view (Fig. 47), outer lobe tubercle-shaped, with setae on internal surface; in lateral view (Fig. 48), blade curved in right angle near base and then straight; ventral margin serrated subapically; apex acute, curved dorsally. Aedeagus (Figs 49, 50) with preatrium strongly developed; shaft very long, cylindrical, slightly curved near base; apex slightly curved posterad, with pair of slender and short apical process, directed anterad. Other characteristics as in generic description.

Female terminalia. Sternite VII ( Fig. 51 ) 1.8 times wider than long; lateral angles rounded; posterior margin with weak V-shaped excavation. Other characteristics as described for A. adunca . and generic description.

Material examined. Holotype male: " Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina ", "Arm. luminosa\ 21-26.viii.2006 F.\ Limeira-de-Oliveira" (CZMA). Paratypes: 1³: " Brasil (MA), Mirador \ Parque Est. Mirador\ Base da Geraldina, 419m \ 06°37'25"S / 45°52'08"W ", " Armadilha de Malaise 14\ - 18.viii.2012, F.Limeira- \ de-Oliveira, J. S. Pinto Jú \ nior & D.W. A. Marques " ( DZUP) ; 1³: " Brasil (MA), Caxias \ Res. Ecol. Inhamum\ Armadilha Luminosa ", " 13-15.xi.2009 \ F. Limeira-de-Oliveira \ et al cols." ( DZUP); 1♀: " Brasil (MA), Mirador \ Parque Est. Mirador\ Base da Geraldina , 419m \ 06°37'25"S / 45°52'08"W ", "Armadilha suspensa\ 01-15.viii.2014, F.Limeira \ -de-Oliveira, L.L.M.\ Santos & L. S. Santos " ( CZMA); 1♀: " Brasil (MA), Mirador\ Parque Est. Mirador\ Posto dos Cágados,\ 06°48'29"S / 45°06'34"W ", " Armadilha de Malaise \ 27.ix-02.x.2011, F.\ Limeira-de- Oliveira & D.\ W. A. Marques, cols." ( CZMA); 1♀: " Brasil (MA), Mirador\ Parque Est. Mirador\ Base da Geraldina,\ 06°37'25"S / 45°52'08"W ", " Armadilha de Malaise \ 30.vii-06.viii.2011, F.\ Limeira-de-Oliveira & D.\ W. A. Marques, cols." ( DZUP) .

Etymology. The new species epithet is derived from the Latin word “longus” meaning long. It refers to the elongated subgenital plates, styles and aedeagus.

Notes. Acusana longa sp. nov. differs from other species of Acusana in having the apex of the pygofer, in dorsal view, with a triangular protrusion, the style blade curved at a right angle near the base and the aedeagus shaft very long.

Figures

FIGURES 37─50. Acusana longa sp. nov., male holotype. 37, head and thorax, dorsal view. 38, head and thorax, ventral view. 39, head and thorax, lateral view. 40, forewing. 41–50, male terminalia: 41, sternite VIII, ventral view. 42, valve, ventral view. 43, pygofer, valve, and subgenital plate, lateral view. 44, apex of pygofer, dorsal view. 45, subgenital plate, ventral view. 46, connective, posterior view. 47, style, dorsal view. 48, style, lateral view. 49, connective and aedeagus, lateral view. 50, aedeagus, posterior view. Scale bars: 37–39 = 1.0mm, 40 = 2.0mm, 41–45, 47–50 = 0.5mm, 46 = 0.25mm.

FIGURES 51─58. Acusana longa sp. nov., female paratype. 51, sternite VII, ventral view. 52, pygofer, lateral view. 53, first valvifer and first valvula, lateral view. 54, apex of first valvula, lateral view. 55, second valvula, lateral view. 56, teeth of dorsal margin, lateral view. 57, teeth of ventral margin, lateral view. 58, second valvifer and gonoplac, lateral view. Scale bars = 0.5mm.