Daveyoungana

Domahovski, Alexandre Cruz & Cavichioli, Rodney Ramiro, 2019, Three new species of Daveyoungana Blocker & Webb (Hemiptera: Cicadellidae: Iassinae: Hyalojassini) from Brazil, Zootaxa 4571 (4), pp. 477-488 : 486

Key to species of Daveyoungana (males)

1. Ventral process of pygofer with process at midlength of ventral margin ( Figs 8 , 22 ); aedeagus with pair of processes near midlength of shaft and without apical or subapical processes ( Figs 14 , 28 )............................................ 2

- Ventral process of pygofer without process at midlength of ventral margin ( Fig. 43 ); aedeagus without pair of processes near midlength of shaft and with apical or subapical processes ( Fig. 49 ).............................................. 4

2. Ventral process of pygofer with apex not curved ventrad, process at midlength broad and long ( Fig. 8 )........................................................................................ D. blockeri sp. nov. (Brazil–Maranhão)

- Ventral process of pygofer with apex curved ventrad, process at midlength slender and short ( Fig. 22 )................... 3

3. Aedeagus with processes at midlength parallel to shaft, shorter than apex of aedeagus ( Blocker & Webb 1992: 13, fig. 11)................................................................ D. collosa Blocker & Webb (Brazil–Mato Grosso)

- Aedeagus with processes at midlength directed laterally and curved dorsally, surpassing aedeagus apex ( Fig. 28 )............................................................................. D. longibrachia sp. nov. (Brazil–Rondônia)

4. Aedeagus with shaft greatly expanded subapically with two pairs of subapical lateral processes and pair of strongly divergent apical processes (Dai & Dietrich 2015: 293, fig. 5D)........................... D. maniforma Dai & Dietrich ( Ecuador)

- Aedeagus with shaft tapered to apex....................................................................... 5 directed dorsally, one pair longer directed ventrally and one small process on anterior surface ( Figs 48, 49 )................................................................................ D. pentacorni sp. nov. (Brazil–Mato Grosso) - Ventral process of pygofer broad, without hook-shaped apex ( Freytag 2018: 489, fig. 3); aedeagus with pair of subapical and apical processes directed laterally ( Freytag 2018: 489, fig. 1)....................... D. guianae Freytag ( French Guiana)

Figures

FIGURES 1–14. Daveyoungana blockeri sp. nov., male holotype. 1, head and thorax, dorsal view. 2, head and thorax, ventral view. 3, head and thorax, lateral view. 4, forewing. 5–14, male terminalia: 5, sternite VIII, ventral view. 6, pygofer, dorsal view, 7, pygofer and subgenital plate, lateral view. 8, ventral process of pygofer, lateral view. 9, ventral process of pygofer, ventral view. 10, subgenital plate, ventral view. 11, connective, dorsal view. 12, style, dorsal view. 13, aedeagus, lateral view. 14, aedeagus, posterior view. Scale bars: 1–4 = 1.0 mm, 5–7 = 0.5 mm, 8–14 = 0.25mm.

FIGURES 15–28. Daveyoungana longibrachia sp. nov., male holotype. 15, head and thorax, dorsal view. 16, head and thorax, ventral view. 17, head and thorax, lateral view. 18, forewing. 19–28, male terminalia: 19, sternite VIII, ventral view. 20, pygofer, dorsal view, 21, pygofer and subgenital plate, lateral view. 22, ventral process of pygofer, lateral view. 23, ventral process of pygofer, ventral view. 24, subgenital plate, ventral view. 25, connective, dorsal view. 26, style, dorsal view. 27, aedeagus, lateral view. 28, aedeagus, posterior view. Scale bars: 15–18 = 1.0 mm, 19–21 = 0.5 mm, 22–28 = 0.25 mm.

FIGURES 36–49. Daveyoungana pentacorni sp. nov., male holotype. 36, head and thorax, dorsal view. 37, head and thorax, ventral view. 38, head and thorax, lateral view. 39, forewing. 40–49, male terminalia: 40, sternite VIII, ventral view. 41, pygofer, dorsal view, 42, pygofer and subgenital plate, lateral view. 43, ventral process of pygofer, lateral view. 44, ventral process of pygofer, ventral view. 45, subgenital plate, ventral view. 46, connective, dorsal view. 47, style, dorsal view. 48, aedeagus, lateral view. 49, aedeagus, posterior view. Scale bars: 36–39 = 1.0 mm, 40–42 = 0.5 mm, 43–49 = 0.25 mm.