Distantasca Dworakowska, 1972

Wang, Ran, Selleck, Cait, Zhang, Yalin & Cao, Yanghui, 2025, Taxonomy of the leafhopper genus Distantasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) with description of a new species from Australia, Zootaxa 5666 (4), pp. 594-600 : 595-596

publication ID

https://doi.org/10.11646/zootaxa.5666.4.10

publication LSID

lsid:zoobank.org:pub:8546C091-3E92-41EF-991E-A72C355351C9

DOI

https://doi.org/10.5281/zenodo.16612394

persistent identifier

https://treatment.plazi.org/id/03FF4B47-FFBB-FF89-FF2E-FDC7FA6469D2

treatment provided by

Plazi

scientific name

Distantasca Dworakowska
status

 

Genus Distantasca Dworakowska View in CoL

Distantasca Dworakowska 1972: 25 View in CoL .

Empoasca (Distantasca) (Dworakowska) View in CoL , Dworakowska & Viraktamath 1975: 529.

Distantasca Dworakowska, 1972 View in CoL , Liu, Fletcher & Zhang 2014: 91 View Cited Treatment .

Type species: Empoasca terminalis Distant 1918 , by original designation.

Description. Body small and fragile, green or yellowish. Ocelli present. Face broad and frontoclypeus narrow. Crown short and wide, roundly produced anteriorly, in dorsal view distinctly shorter than width between eyes, coronal suture present, usually distinct. Pronotum broad, with anterior margin roundly produced and posterior margin nearly straight, middle length longer than that of vertex. Forewing rounded apically, apical cells (ac) occupying nearly a third of forewing length, ac3 usually rectangular, R2, RM arising from r cell not stalked with MCu arising from m cell, c and r cells narrower than m and cua cells; ac1 nearly equal to ac2. Hindwing with MP and CuA fused. Coloration of female same as male except for a brown ovipositor.

Front femur anteromedial seta (AM1) long and stout, situated on apex of ventral margin; intercalary row with 1 relatively large basal seta and 10–12 fine setae, extended nearly half length of femur; ca. 8 posteroventral setae (PV) of varying lengths in a row down the length of the tibia and 2 pairs of setae situated on apex of tibia; tarsus elongate, approximately one third length of tibia. Middle femur with 1 dorsoapical macroseta, and a row of numerous, slim PV setae; tarsus almost same as tarsus in fore leg. Hind femur with macrosetal formula 2+1+1, tibia anteroventral row (AV) with 10 preapical macrosetae; anterodorsal setae (AD) and posterodorsal setae (PD) numerous, almost same size, both longer than posteroventral setae (PV); tarsus longer than front and middle tarsus.

Pygofer side short, pygofer ventral appendage and anal tube appendage well developed. Subgenital plate, in lateral view, curved gradually caudodorsad apically, not expanded apically, with elongate fine setae present in distinct basal and distal groups, basal group setae present or absent, with numerous marginal microsetae uniseriate on apical half, double near base with single row of macrosetae distally extended to apex. Connective strongly constricted posteriorly.

Diagnosis. This genus exhibits external morphological features similar to Empoasca Walsh, 1862 and Hebata (Signatasca) ( Xu, Dietrich & Qin, 2021) . It can be distinguished by the following combination of features: body small and fragile, typically green or yellowish; coronal suture well delimited; forewing with R2, RM arising separately from r cell (unstalked), hindwing with MP and CuA fused; pygofer lobe short, with ventral appendage; subgenital plate with elongate fine setae arranged into distinct basal and distal groups; connective strongly constricted posteriorly; anal tube process well-developed, usually ornamented with tiny teeth.

Distribution. Australia (Queensland, Victoria, South Australia), China (Fujian, Guangdong, Guizhou, Hannan, Hubei, Hunan, Taiwan, Yunnan), Democratic Republic of the Congo, India (Sikkim), Indonesia, Japan, Micronesia, Nepal (Pokhara), Papua New Guinea, South Africa, Vietnam.

Key to species of Distantasca (males)

3. Aedeagal shaft with one pair of basal appendages.................................. D. smithi (Fletcher & Donaldson) Aedeagal shaft with only one basal appendage.................................. D. parasmithi Wang & Cao sp. nov.

4. Aedeagal shaft without basal appendages.................................................................. 5 Aedeagal shaft with basal appendages.................................................................... 11

5. Aedeagal shaft with paired apical processes............................................ D. latibasis (Zhang & Liu) Aedeagal shaft without processes......................................................................... 6

6. Aedeagal shaft subequal to preatrium in length.............................................................. 7 Aedeagal shaft much shorter than preatrium................................................................ 8

7. Aedeagal shaft with distinct lamellate lateral extensions in ventral view...................... D. rokasa (Dworakowska) Aedeagal shaft without distinct lamellate lateral extensions in ventral view............... D. longihamatilis (Zhang & Liu)

8. Anal tube appendage broad apically, not hook-like.................................... D. interrupta (Dworakowska) Anal tube appendage pointed apically, hook-like............................................................. 9

9. Aedeagal shaft with lamellate dorsal extensions............................................... D. theroni (Gerard) Aedeagal shaft without lamellate dorsal extensions.......................................................... 10

10. Aedeagal shaft strongly expanded ventrad............................................... D. tiaca (Dworakowska) Aedeagal shaft slightly broadened in lateral view......................................... D. atika (Dworakowska)

11. Aedeagal shaft with two pairs of basal appendages.......................................................... 12 Aedeagal shaft with one pair of basal appendages........................................................... 13

12. Anal tube appendages with large subapical tooth.................................. D. paraterminalis (Qin & Zhang) Anal tube appendages without large subapical tooth......................................... D. terminalis (Distant)

13. Ventral pygofer appendage not reaching hind margin of pygofer side............. D. pinjorensis (Sohi, Mann & Shenhmar) Ventral pygofer appendage reaching or surpassing hind margin of pygofer side................................... 14

14. A pair of small lateral extensions present at mid-length of aedeagal shaft..................... D. rabava (Dworakowska) Aedeagal shaft without small lateral extensions medially..................................................... 15

15. Anal tube appendage pointed apically or with sharp subapical tooth............................................ 16 Anal tube appendage broad apically...................................................................... 18

16. Aedeagal shaft irregularly serrated subapically on ventral margin........................ D. serratipenis (Qin & Zhang) Aedeagal shaft smooth on ventral margin................................................................. 17

17. Aedeagal shaft appendages close to shaft in ventral view................................. D. bulbosa (Dworakowska) Aedeagal shaft appendages far away from shaft in ventral view.............................. D. riora (Dworakowska)

18. Aedeagal shaft appendages ornamented with small teeth apically........................ D. tuberculate (Zhang & Liu) Aedeagal shaft appendages without small teeth apically...................................................... 19

19. Aedeagal shaft slightly curved, shorter than preatrium....................................................... 20 Aedeagal shaft strongly curved dorsad, subequal to preatrium in length.......................................... 21

20. Anal tube appendage expanded apically............................................... D. latava (Dworakowska) Anal tube appendage with apex narrower than base..................................... D. barawa (Dworakowska)

21. Aedeagal shaft and appendages subequally broad in lateral view............................. D. faciata Dworakowska Aedeagal shaft much broader than its appendages in lateral view............................... D. tna (Dworakowska)

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae

SubFamily

Typhlocybinae

Tribe

Empoascini

Loc

Distantasca Dworakowska

Wang, Ran, Selleck, Cait, Zhang, Yalin & Cao, Yanghui 2025
2025
Loc

Empoasca (Distantasca) (Dworakowska)

Dworakowska, I. & Viraktamath, C. A. 1975: 529
1975
Loc

Distantasca

Dworakowska, I. 1972: 25
1972
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