Asymmetrasca

Liu, Yang, Fletcher, Murray J., Dietrich, Christopher H. & Zhang, Ya-Lin, 2014, New species and records of Asymmetrasca (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) from China and name changes in Empoasca (Matsumurasca), Zootaxa 3768 (3), pp. 327-350 : 328-329

Key to species of Asymmetrasca based on males

1 Distal process of aedeagus with apex tapered, lacking branches or teeth........................................... 2

1’ Distal process of aedeagus with at least one preapical projection or tooth.......................................... 5

2 Distal process of aedeagus evenly curved throughout length in posterior view...................................... 3

2’ Distal process of aedeagus distinctly bent preapically in posterior view........................................... 4

3 Aedeagus with preatrium more than half length of shaft, shaft nearly straight ( Figs 24–25 )........................ helica

3’ Aedeagus with preatrium much less than half length of shaft, shaft distinctly curved in lateral view................ cisiana

4 Aedeagus with shaft much longer than preatrium ( Figs 38–39 )............................................. kaicola

4’ Aedeagus with shaft only slightly longer than preatrium ( Figs 8–9 ).................................... dahaituoensis

5 Distal process of aedeagus with two or more distal teeth....................................................... 6

5’ Distal process of aedeagus with a single preapical tooth or projection, or apex appearing bifid......................... 7

6 Aedeagus with dorsal apodeme very short, shaft without toothed dorsolateral flange ( Figs 33–34 )............ hypercurvata

6’ Aedeagus with dorsal apodeme well developed, shaft with toothed dorsolateral flange ( Figs 63–64 )................ sakaii

7 Distal process of aedeagus nearly straight in posterior view.................................................... 8

7’ Distal process of aedeagus strongly curved in posterior view................................................... 9

8 Distal process of aedeagus extended to right in posterior view, preapical projection extended dorsad ( Figs 1–2 )....... cienka

8’ Distal process of aedeagus extended to left in posterior view, preapical projection extended ventrad ( Figs 43–44 ).... liaoensis

9 Aedeagal shaft with basal width> 1/3 shaft length along dorsal margin in lateral view............................. 10

9’ Aedeagal shaft with basal width much narrower than 1/3 width of length along dorsal margin in lateral view............ 11

10 Distal process of aedeagal shaft extended to right in posterior view, preapical process smaller than section distad of process ( Figs 49–50 )..................................................................................... mona

10’ Distal process of aedeagal shaft extended to left in posterior view, preapical process as large as section distad of process ( Figs 61–62 )........................................................................................ rybiogon

11 Distal process of aedeagus with single large preapical tooth or projection........................................ 12

11’ Distal process of aedeagus with 2 or more preapical teeth (may be small)........................................ 13

12 Distal process of aedeagus with preapical projection extended dorsad in posterior view shaft distinctly bent dorsad in lateral view......................................................................................... nipponica

12’ Distal process of aedeagus with preapical projection extended laterad in posterior view, shaft nearly straight in lateral view ( Figs 69–70 )..................................................................................... uncus

13 Distal process of aedeagus tapered with several small preapical teeth............................................ 14

13’ Distal process of aedeagus with apex, expanded and truncate with medial tooth ( Figs 79 ).................... uniprossicae

14 Aedeagal shaft shorter than preatrium, without denticuli on dorsal surface ( Figs 55–56 )........................ reflexilis

14’ Aedeagal shaft longer than preatrium, with denticuli on dorsal surface........................................... 15

15 Aedeagal shaft with section distad of gonopore longer than basal section ( Figs 16–17 )......................... decedens

15’ Aedeagal shaft with section distad of gonopore shorter than basal section ( Figs 47–48 )......................... lutowa

Figures

FIGURES 21 – 29. Asymmetrasca helica, 21, male pygofer, lateral view; 22, pygofer appendage; 23, abdominal apodemes; 24, aedeagus, ventral view; 25, aedeagus, lateral view; 26, anal tube appendage; 27, connective; 28, paramere; 29, subgenital plate.

FIGURES 38 – 39. Asymmetrasca kaicola, 38, aedeagus, ventral view; 39, aedeagus, lateral view. (all after Dworakowska, 1982).

FIGURES 3 – 12. Asymmetrasca dahaituoensis, 3, male pygofer, lateral view; 4, pygofer appendage; 5, abdominal apodemes; 6, dorsal bridge; 7, connective; 8, aedeagus, ventral view; 9, aedeagus, lateral view; 10, anal tube appendage; 11, paramere; 12, subgenital plate.

FIGURES 30 – 37. Asymmetrasca hypercurvata, 30, male pygofer, lateral view; 31, anal tube appendage; 32, abdominal apodemes; 33, aedeagus, ventral view; 34, aedeagus, lateral view; 35, connective; 36, paramere; 37, subgenital plate.

FIGURES 63 – 64. Asymmetrasca sakaii, 63, aedeagus, ventral view; 64, aedeagus, lateral view. (all after Dworakowska, 1982).

FIGURES 1 – 2. Asymmetrasca cienka, 1, aedeagus, ventral view; 2, aedeagus, lateral view. (all after Dworakowska, 1982).

FIGURES 40 – 46. Asymmetrasca liaoensis, 40, male pygofer, lateral view; 41, abdominal apodemes; 42, connective; 43, aedeagus, ventral view; 44, aedeagus, lateral view; 45, paramere; 46, subgenital plate.

FIGURES 49 – 50. Asymmetrasca mona, 49, aedeagus, ventral view; 50, aedeagus, lateral view. (all after Dworakowska, 1982).

FIGURES 61 – 62. Asymmetrasca rybiogon, 61, aedeagus, ventral view; 62, aedeagus, lateral view. (all after Dworakowska, 1982).

FIGURES 65 – 74. Asymmetrasca uncus, 65, male pygofer, lateral view; 66, dorsal bridge; 67, abdominal apodemes; 68, pygofer appendage; 69, aedeagus, ventral view; 70, aedeagus, lateral view; 71, anal tube appendage; 72, connective; 73, paramere; 74, subgenital plate.

FIGURES 75 – 81. Asymmetrasca uniprossicae, 75, male pygofer, lateral view; 76, abdominal apodemes; 77, anal tube and anal styli; 78, paramere; 79, aedeagus, ventral view; 80, connective; 81, subgenital plate.

FIGURES 51 – 60. Asymmetrasca reflexilis, 51, male pygofer, lateral view; 52, pygofer appendage; 53, anal tube appendage; 54, connective; 55, aedeagus, ventral view; 56, aedeagus, lateral view; 57, paramere; 58, abdominal apodemes; 59, paramere; 60, subgenital plate.

FIGURES 13 – 20. Asymmetrasca decedens, 13, male pygofer, lateral view; 14, anal tube appendage; 15, abdominal apodemes; 16, aedeagus, ventral view; 17, same, lateral view; 18, connective; 19, subgenital plate; 20, paramere. (all after Dworakowska, 1970).

FIGURES 47 – 48. Asymmetrasca lutowa, 47, aedeagus, ventral view; 48, aedeagus, lateral view. (all after Dworakowska, 1982).