Dietrichana pampas, 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 : 50-53

Dietrichana pampas n. sp.

( Figs. 1S , 6 , 28– 30 , 95S–T )

Diagnosis. Currently, this is the only known species of the genus.

Body. Dimensions as in genus description.

Color. As in genus description, with the following additional details. Male generally darker than female. Male abdomen, ventrally: sternites III–VI with middle 2/3 broadly colored brown, with ivory stripe laterad of broad brown marking, lateral margin dark brown; sternites V–VIII with narrow dark brown medial line; sternites VII–VIII laterally with distinct oblique brown macula. Male pygofer mostly ivory to tawny, with round dark brown spot anteroventrally. Female abdomen with less distinct brown markings ventrally.

Male. Pygofer elongate; somewhat produced to posterodorsal corner. Lateral margin of valve truncate, not pointed. Aedeagus with base tall, dorsal margin reaching past mid-height of shaft; base in caudal view roundedly triangular, 1.5x taller than width of base; caudoventral margin slightly and broadly incurved above ventral extremity; shaft broadly arching dorsally; gonopore apical; apex in lateral view oblique; anterodorsal side of apex thickened and expanded laterally, forming broad trapezoidal apex in caudal view. Apodemes of sternite I well-developed, reaching nearly to posterior margin of sternite III. Apodemes of sternite II blunt, hardly developed.

Female. Sternite VII relatively large, length at lateral lobe (longest length) 0.8x maximum width; posterior mar- gin broadly excavated, sinuate mesad of lateral lobe, medially with broad hump; marked with pair of hoof-shaped dark brown markings medially at apex (appearing to extend further anteriorly in cleared specimen [ Fig. 29J ] than in uncleared specimens).

Material examined. HOLOTYPE: 1♂, ARGENTINA: La Pampa, P.N. Lihué Calel, 5-II-2014

38.00251°S 65.59337°W, AR14-2, J.N. Zahniser, vacuum [ MLPA]. PARATYPES: 11♂, 8♀ , 2n, same data [ MLPA, INHS, USNM] .

Distribution. This species is known only from the type locality in Argentina (La Pampa Prov.).

Etymology. The species name is considered a noun and is named after the pampas grasslands of Argentina, Uruguay, and southern Brazil.

Remarks. Specimens were swept and vacuumed from large bunch grasses in P.N. Lihué Calel ( Figs. 1Q–S ).

Figures

FIGUIRE 1. Habitat and live views of some Faltalini. (Q, R) Lihué Calel National Park in La Pampa Prov., Argentina. (S) Dietrichana pampas n.gen. & sp., male (T, V) Faltala viscacha n. sp., female (U) Ackbaria ojosverdes n. sp., female.

FIGUIRE 6. Distribution of Ackbaria and Dietrichana n.gen.

FIGUIRE 28. Dietrichana pampas n.gen. & sp. (A–I) standard views; A1 & B, female; A2, male.

FIGUIRE 29. Dietrichana pampas n.gen. & sp. (J–P) standard views. (Q) apices of metatibiae, tarsomeres I–III, and tarsal claws. (R) tibial pecten and metatarsomere I. (S) female sternite VII, pygofer, and ovipositor.

FIGUIRE 30. Dietrichana pampas n.gen. & sp., SEM images. (Q) head to forewing apices, dorsal view (composite of 2 images). (R) face.

FIGUIRE 95. SEM images of hindwings and associated terga of some Faltalini. (Q–R) Kramerana junina ♂; Q, scale = 0.25 mm; R, scale = 0.05 mm. (S–T) Dietrichana pampas ♀; S, scale = 0.50 mm; T, scale = 0.15 mm. (U–V) Aequcephalus laplata ♂; U, scale = 0.50 mm; V, scale = 0.15 mm.