Cylindratus, Meng, Qin et Wang, 2020

Gnezdilov, Vladimir M., 2021, A new species of the genus Cylindratus Meng, Qin et Wang, 2020 from Northern Vietnam, with first description of 5 instar larva and a key to Vietnamese Caliscelini (Hemiptera: Fulgoromorpha: Caliscelidae), Zootaxa 4985 (4), pp. 531-541 : 537

Key to Cylindratus species

1. Metope and coryphe elongate, 1.7 times as long medially as wide between the eyes. The disc of pronotum with 5 (4+1) traces of larval sensory pits along each lateral margin ( Zhang et al. 2020, fig. 28a, b). Phallobase elongate (in lateral and dorsal views), cylindrical ( Zhang et al. 2020, fig. 28f, g). Style with capitulum jointed with main plate at obtuse angle (in lateral view) ( Zhang et al. 2020, fig. 28d)..................................................... C. longicephalus Meng, Qin et Wang

–. Metope and coryphe slightly longer than wide, 1.1–1.2 times as long medially as wide between the eyes ( Figs 2, 3, 5, 6 ). The disc of pronotum with 4 traces of larval sensory pits along each lateral margin ( Fig. 22 ). Phallobase short, flattened dorsoventrally, wide (in dorsal view) ( Fig. 13 ). Style with capitulum jointed with main plate at right angle (in lateral view) ( Fig. 15 )................................................................................ C. fansipan sp. nov.

Figures

FIGS 1–6. Cylindratus fansipan sp. nov. 1—male, holotype, lateral view; 2—male, holotype, dorsal view; 3—male, holotype, frontal view; 4—female, paratype, lateral view; 5—female, paratype, dorsal view; 6—female, paratype, dorsal view.

FIGS 21–22. Cylindratus fansipan sp. nov. 21—male holotype, head and pro- and mesonotum, in lateral view; 22—female paratype, pronotum, in dorsal view.

FIGS 13–20. Cylindratus fansipan sp. nov., male and female genitalia, 13–17—male holotype, 18–20—female, paratype. 13— genital block, caudal view; 14—genital block, lateral view; 15—style, lateral view; 16—style, dorsal view; 17, 18—anal tube, dorsal view; 19—sternite VII, ventral view; 20—ovipositor, lateral view.Abbreviations: cnv—connective; gnp—gonoplacs; Gx VIII—gonocoxa VIII; phlb—phallobase; pyg—pygofer; susp—suspensorium; vh—ventral aedeagal hooks.