Nullana sakakibarai, Domahovski & Cavichioli, 2017

Domahovski, Alexandre Cruz & Cavichioli, Rodney Ramiro, 2017, Two new species of Nullana from southern Brazil (Hemiptera: Cicadellidae: Gyponini) with key to males, Zootaxa 4281 (1), pp. 207-218 : 214

Nullana sakakibarai sp. nov.

( Figs 20–39 )

Diagnosis. Style ( Fig. 30 ) with blade slightly sigmoid, ventral margin with small tooth at mid-length; apex constricted subapically, curved dorsally with two small tips.

Description. (male) length 8.1mm (n=4), (female) length 8.7mm (n=3). Protibiae PD row with only four setae. Other characteristics as in previous description.

Coloration. Forewing ( Fig. 23 ) with black spot at base of clavus, anal margin with black maculae only on anterior angle. Other characteristics as in previous description.

Male terminalia. Sternite VIII ( Fig. 24 ) 1.6 times wider than long; posterolateral angles rounded, posterior margin with small V-shaped notch at middle. Valve ( Fig. 25 ) 1.5 times wider than long; integument thickening only on anterior margin; posterior margin emarginate. Pygofer ( Fig. 26 ) 1.6 times longer than maximum height; dorsal margin without process at base; dorsoapical margin approximately straight; ventroapical margin slightly rounded; apex tapered and truncate; macrosetae dispersed on posterior half. Subgenital plate ( Fig. 26 ) produced posterad almost as far as apex of pygofer; in ventral view ( Fig. 27 ) 5.8 times longer than wide, with small setae on lateral margin and apex; lateral margins straight and parallel; apex rounded. Connective ( Fig. 28 ) Y-shaped, twice as long as the basal width; stalk elongated, longer than wide; apex directed ventrally. Style ( Fig. 29 ), in dorsal view, with outer lobe small and rounded; in lateral view ( Fig. 30 ), blade elongated and slightly sigmoid, ventral margin not serrated, with small tooth at mid length; apex constricted subapically, curved dorsally with two small tips. Aedeagus ( Figs 31, 32 ) with preatrium developed; dorsal apodemes weakly developed laterodorsally and rounded; shaft short, lateral margins carinated, with pair of small spinelike latreral subapical processes; apex membranous, bent ventrally with two translucent lobes.

Female terminalia. Sternite VII ( Fig. 33 ) 2.0 times wider than long; posterolateral angles rounded, posterior margin with V-shaped notch at middle. Other characteristics as in previous description.

Material examined. Holotype male: " Brasil, PR, Antonina \ Res.[Reserva] Rio Cachoeira \ 25.316°S 48.696°W \ 50m, 20–25.xi.2014 \ Luminosa\ Entomologia UFPR "; Paratypes: 3 ♂, same data as the holotype ; 2 ♀, " Antonina - PR \ Reserva Sapitanduva \ Brasil 16.V.1988 \ Lev.[Leventamento] Ent.[Entomológico] PROFAUPAR\ Malaise" ; 1 ♀, " Morretes - PR Brasil \ ( IAPAR)\ 18-25.II.1985 \ C.I.I.F. (Malaise)".

Remarks. Nullana sakakibarai sp. nov. is most similar to N. gelbana and N. alena in having the style with a small tooth on the ventral margin. However in the new species the blade is sigmoid and the small tooth is at about the mid-length of the blade. In the two other species the style is approximately straight. Nullana gelbana has the small tooth near the apex of the blade and the tooth in N. alena is near base. Also, in the new species the style apex is constricted subapically, with two small tips, a characteristic not present in other Nullana species.

Figures

FIGURES 20 – 32. N. sakakibarai sp. nov., holotype male. 20, head and thorax, dorsal view. 21, head, frontal view. 22, head and thorax, lateral view. 23, forewing. 24 – 32, male terminalia: 24, sternite VIII, ventral view. 25, valve, anterior view. 26, pygofer, valve and subgenital plate, lateral view. 27, subgenital plate, ventral view. 28, connective, posterior view. 29, style and connective, dorsal view. 30, style, lateral view. 31, aedeagus, lateral view. 32, aedeagus posterior view. Scale bars: 20 – 22 = 1.0 mm, 23 = 2.0 mm, 24 – 30 = 0.5 mm, 31 – 32 = 0.25 mm.

FIGURES 33 – 39. 33 – 37, N. sakakibarai sp. nov., terminalia of female paratype. 33, sternite VII and pygofer, ventral view. 34, pygofer and valvulae, lateral view. 35, first valvifer and first valvulae, lateral view. 36, second valvulae, lateral view. 37, second valvifer and third valvulae. 38 – 39, N. sakakibarai sp. nov. holotype habitus. 38, dorsal view. 39, lateral view. Scale bars: 33 – 37 = 1.0 mm, 38 – 39 = 2 mm.