Idioscopus

Guo, Meishu & Dai, Renhuai, 2025, Descriptions of two new species of the leafhopper genus Idioscopus Baker (Hemiptera: Cicadellidae: Eurymelinae: Idiocerini) from China, Zootaxa 5566 (3), pp. 578-586 : 579-580

Checklist of Idioscopus species from China

Idioscopus bibamulus Wang, Wang, Dai & Webb, 2022: 100 , fig. 1.

Distribution: China (Yunnan).

Idioscopus bimaculatus ( Pruthi, 1936) : 102.

Idiocerus bimaculatus Pruthi, 1936: 102 , figs. 2, 2a.

Idioscopus bimaculatus (Pruthi) : Maldonado-Capriles, 1965: 244; Viraktamath, 1980: 227, figs. 1–6; Zhang & Li, 2012: 207, fig. 7.

Idioscopus myrica Wang & Dai, 2018: 12–13 , figs. 1–10, syn. nov.

Distribution: China (Guizhou).

Idioscopus clypealis ( Lethierry, 1889) : 252.

Idiocerus clypealis Lethierry, 1889: 252 .

Idioscopus clypealis (Lethierry) : Maldonado-Capriles, 1964: 92–93, figs. 6–9; Fletchwe & Dangerfield, 2002: 35, figs. 1–3, 7–10; Khatri & Webb, 2014: 282–284, fig. 5.

Idioscopus taiwanus Huang & Maldonado-Cpariles, 1992: 5 , figs. 3A–H.

Synonymised by Wang, Wang, Dai & Webb, 2022: 105, fig. 4.

Distribution: China (Yunnan, Fujian, Hainan, Taiwan).

Idioscopus furcaprocessus Wang, Wang, Zhou & Dai, 2021: 376 , figs. 1, 3A–E.

Distribution: China (Yunnan).

Idioscopus longiprocessus Wang, Wang, Zhou & Dai, 2021: 378 , fig. 2.

Distribution: China (Yunnan).

Idioscopus nitellicus Kuoh & Fang, 1985: 190 , figs. 8–16.

Distribution: China (Yunnan).

Idioscopus nitidulus ( Walker, 1870) : 322.

Iassus nitidulus Walker, 1870: 322 .

Idioscopus nitidulus (Walker) : Maldonado-Capriles, 1973: 181; Fletchwe & Dangerfield, 2002: 36, figs. 4–6, 11– 14; Khatri & Webb, 2014: 282, fig. 4.

Distribution: China (Yunnan, Fujian, Guangxi, Taiwan, Hainan).

Idioscopus recurvatus Kuoh & Fang, 1985: 189 , figs. 1–7.

Distribution: China (Yunnan).

Idioscopus serratastylus Wang, Wang, Zhou & Dai, 2021: 378 , fig. 3.

Distribution: China (Yunnan).

Idioscopus triprocessus sp. nov.

Distribution: China (Shanxi, Guizhou).

Idioscopus ventrispinus Wang, Wang, Dai & Webb, 2022: 102 , figs. 2, 3F–J.

Distribution: China (Yunnan).

Idioscopus xanthomacula sp. nov.

Distribution: China (Yunnan).

Key to the species of Idioscopus from China

1 Aedeagus shaft with one pair of subapical processes.......................................................... 2

- Aedeagus shaft with two or three pairs of processes.......................................................... 6

2 Aedeagus shaft with processes strongly curved and directed terminally........................................... 3

- Aedeagus shaft with processes weakly curved and directed basally or laterally..................................... 4

3 Aedeagal shaft with a thick and long furcella on the subapical ventral margin ( Figure 1C–D )............... I. bimaculatus

- Aedeagal shaft without a furcella on the subapical ventral margin ( Figure 1A–B )......................... .. I. bibamulus

4 Aedeagus processes with a pair of tooth-like projections on the side near the aedeagal shaft ( Figure 1G–H ). I. furcaprocessus

- Aedeagus processes smooth, without tooth-like projections.................................................... 5

5 Aedeagal shaft sharp at the tip, with a short curved ventral process at base ( Figure 1–J ).................. I. longiprocessus

- Aedeagal shaft flat and broadened at the tip, without ventral process at base ( Figure 1Q–R )............... I. serratastylus

6 Aedeagus shaft with one pair of apical processes and two pairs of subapical processes ( Figure 2G–H ). I. triprocessus sp. nov.

- Aedeagus shaft with two pairs of processes................................................................. 7

7 Aedeagus shaft with an unpaired long ventral process posteriorly near midlength ( Figure 1S–T )............. I. ventrispinus

- Aedeagus shaft without unpaired ventral process near midlength............................................... 8

8 Aedeagus shaft divaricate near the tip ( Figure 3G–H )...................................... I. xanthomacula sp. nov.

- Aedeagus shaft not divaricate near the tip.................................................................. 9

9 Aedeagus shaft with one pair of long and arcuately curved subapical processes and one pair of short processes above them ( Figure 1O–P ).............................................................................. I. recurvatus

- Aedeagus shaft with two pairs of processes arising from same position.......................................... 10

10 Aedeagus processes located at the tip of aedeagus shaft ( Figure 1M–N ).................................. I. nitidulus

- Aedeagus processes located subapically on aedeagus shaft................................................... ..11

11 Aedeagus processes slender and long, one pair extended ventrad of shaft base ( Figure 1E–F ).................. I. clypealis

- Aedeagus processes short, not extended ventrad of shaft base ( Figure 1K–L )............................. .. I. nitellicus

Figures

FIGURE 1. A–T. Idioscopus species; A–B: I. bibamulus, aedeagus, ventral view and lateral view; C–D: I. bimaculatus, aedeagus, ventral view and lateral view; E–F: I. clypealis, aedeagus, ventral view and lateral view; G–H: I. furcaprocessus, aedeagus, ventral view and lateral view; I–J: I. longiprocessus, aedeagus, ventral view and lateral view; K–L: I. nitellicus, aedeagus, ventral view and lateral view; M–N: I. nitidulus, aedeagus, ventral view and lateral view; O–P: I. recurvatus, aedeagus, ventral view and lateral view; Q–R: I. serratastylus, aedeagus, ventral view and lateral view; S–T: I. ventrispinus, aedeagus, ventral view and lateral view.

FIGURE 2. I. triprocessus sp. nov. A. adult, dorsal view; B. adult, lateral view; C. face; D. connective, ventral view; E. connective, lateral view; F. style, lateral view; G. aedeagus, lateral view; H. aedeagus, ventral view; I. pygofer and subgenital plate, lateral view.

FIGURE 3. I. xanthomacula sp. nov. A. adult, dorsal view; B. adult, lateral view; C. face; D. connective, ventral view; E. connective, lateral view; F. style, lateral view; G. aedeagus, lateral view; H. aedeagus, ventral view; I. pygofer and subgenital plate, lateral view.