Tenucephalus bartletti, Zahniser, 2021

Zahniser, James N., 2021, Revision of the New World leafhopper tribe Faltalini (Hemiptera: Cicadellidae: Deltocephalinae) and the evolution of brachyptery, Zootaxa 4954 (1), pp. 1-160 : 98

Tenucephalus bartletti n. sp.

( Figs. 60 , 84 )

Diagnosis. T. bartletti can be identified by a combination of the typical color pattern, the valve longer than wide, male pygofer distinctly constricted in dorsal view with constriction forming a wide base and constricted apical part, aedeagus without apical flagellar process, the subgenital plates relatively broad and broadly rounded at apex, the connective-aedeagus without symmetrical pair of processes fused near aedeagal base and with an asymmetrical unpaired process extending dorsad of aedeagal shaft, and the style apophysis long, as a long as basal part (base to preapical lobe).

Body. Male, 4.6 mm. Female, 5.4 mm.

Color. With the typical color pattern.

Male. Pygofer somewhat elongate, distinctly constricted in dorsal view with constriction forming a wide base and constricted apical part; basal part (anterad of constriction) with numerous long macrosetae posteriorly; apical part (posteriad of constriction) with numerous short dorsally directed setae across middle, with numerous long macrosetae along ventral margin and at apex directed caudally. Valve large, median length longer than width. Subgenital plates relatively wide, lobelike; apices rounded; without distinct row of large macrosetae, with only several fine setae laterally on apical 1/3. Style preapical lobe knoblike; apophysis long, nearly as long as basal part, with apices slightly bent mesad. Connective-aedeagus with unpaired lanceolate process extending dorsad of aedeagal shaft, surpassing apex of aedeagus, without symmetrical pair of processes fused near aedeagal base. Aedeagus tubular, slightly bent dorsad. Phragma bulbous lobes small, lobelike; sclerotized; with several short setae. Segment X membranous.

Female. Sternite VII with large median lobe, bases forming acute angle with oblique posterior margin. Sternite VIII forming sclerotized plates laterally, extending just anterad of stVII anterior margin as arcuate, mostly membranous wrinkled tissue.

Material examined. HOLOTYPE: 1♂, PERU, Madre de Dios, Manu, Pakitza , 11°56’S 71°18’W, 250m., 12– 18-IX-1989, kitchen stream, malaise trap, night collection, N. Adams et al. [ USNM] . PARATYPES: 2♀, same data as holotype . 2♂, 2♀, PERU: Madre de Dios, Tambopata Research Center, on Rio Tambopata , 622ft., 13°08.305 S 69°36.502 W, 3–7-X-2004, CR Bartlett. [ USNM]

Etymology. This species is named in honor of Dr. Charles R. Bartlett (University of Delaware).

Distribution. This species is known only from Peru.

Remarks. T. bartletti is a member of the – lingulatus group. It was resolved with strong branch support in a clade with T. johnsoni and T. lingulatus .

Figures

FIGUIRE 60. Tenucephalus bartletti n. sp. (A–B, D–H, J) standard views; A & B, female. aed = aedeagus; sl = sclerotized setose lobe of phragma; udp = unpaired dorsal process of connective-aedeagus.

FIGUIRE 84. Distribution of Tenucephalus spp. and Virganana danasensis in northwestern South America.