Stegelytrini

Key to genera of Stegelytrini from China (modified from Wei et al., 2010)

1. Lateral frontal sutures reaching or not reaching corresponding ocellus; scutellum without median or posterolateral ridge or keel; forewing with or without reticulate venation................................................................ 2

- Lateral frontal sutures extended well beyond corresponding ocellus; antenna long (about as long as body); scutellum with or without median or posterolateral ridge or keel; forewing without reticulate venation................................ 3

2. Vertex produced medially. Forewing apex rounded, without reticulate venation......................... Pachymetopius

- Vertex not produced medially (Fig. 5). Forewing apex truncate, venation reticulate (Fig. 1)..................... Daochia

3. Lateral margin of pronotum very short, without lateral carina; appendix of forewing very much reduced or absent...................................................................................................... Wyuchiva

- Lateral margin of pronotum very long, lateral carina present; appendix of forewing distinct........................... 4

4. Scutellum short or long, with longitudinal medial ridge or keel or with ridge on each side posteriorly................... 5

- Scutellum short without longitudinal ridges................................................................. 9

5. Scutellum with ridge on each side posteriorly....................................................... Placidellus

- Scutellum with long medial ridge or keel posteriorly......................................................... 6

6. Head slightly narrower than pronotum; vertex very short.............................................. Quiontugia

- Head much narrower than pronotum; vertex relatively long.................................................... 7

7. Pronotum with medial longitudinal ridge.......................................................... Pseudododa

- Pronotum without medial longitudinal ridge................................................................ 8

8. Anteclypeus narrow basally and broadening apically................................................... Kunasia

- Anteclypeus broad basally with lateral margin slightly sinuated from base to apex........................... Stenolora

9. Claval veins fused; 5 th apical cell of forewing very small or absent (i.e. without cross vein from outer subapical cell)................................................................................................... Minucella

- Claval veins connected by crossvein; 5 th apical cell of forewing small to normal................................... 10

10. Forewing veins bicoloured (brown regularly intervened with yellowish white); style with preapical lobe undifferentiated from apophysis, few setae situated subapically on latter................................................. Paradoxivena

- Forewing veins mainly unicoloured; style with preapical lobe distinct from apophysis, few setae situated on former...... 11

11. Anteclypeus broad basally with lateral margin slightly convex at least in male; forewing truncate apically...... Trunchinus

- Anteclypeus narrow basally and broadening apically both in male and female; forewing convex apically............... 12

12. Scutellum with tufts of setae on lateral margin; style with several setae on preapical lobe......................... Cyrta

- Scutellum without tufts of setae; style without setae on preapical lobe..................................... Paracyrta