Thyrsophorini, Kolbe, 1882

Jie, Lulan, Liang, Feiyang & Liu, Xingyue, 2022, Dipsocus gen. n.: A new bark louse genus of the tribe Thyrsophorini (Psocodea: Psocidae: Psocinae), with description of a new species from China, Zootaxa 5222 (1), pp. 94-100 : 95

Key to genera of Thyrsophorini from China

1 Male ............................................................................................... 2

- Female............................................................................................. 8

2 Cell m3 narrowed..................................................................................... 3

- Cell m3 not narrowed.................................................................................. 4

3 M3 parallel to CuA1 or almost so (Endang & Thornton 1992: Fig. 41)................................ Clematoscenea

- M3 not parallel to CuA1 ( Li 2002: Fig. 1409A)................................................. Pseudoclematus

4 Forewing with veins on basal two-thirds yellowish or greyish white; hypandrium slightly sclerotized, present as a simple plate ( Jie et al. 2022: Fig. 1 )....................................................................... Ceratostigma

- Forewing vein brown; hypandrium totally or part area strongly sclerotized........................................ 5

5 Hypandrium divided into two parts, basal part strongly sclerotized, anterior part slightly sclerotized........ Dipsocus gen. n.

- Hypandrium totally strongly sclerotized................................................................... 6

6 Hypandrium with an area with vertical ridges............................................................... 7

- Hypandrium without an area with vertical ridges ( Li 2002: Fig. 1416G).................................... Cyclotus

7 Hypandrium divided into two lobes, with a median process ( Li 2002: Fig. 1413F)......................... Longivalvus

- Hypandrium not divided into two lobes, without a median process ( Smithers 1972: Fig. 729)............... Psococerastis

8 Cell m3 narrowed..................................................................................... 9

- Cell m3 not narrowed................................................................................. 10

9 M3 parallel to CuA1 or almost so ( Thornton 1984: Fig. 151)........................................ Clematoscenea

- M3 not parallel to CuA1 ( Li 2002: Fig. 1409A)................................................. Pseudoclematus

10 Tip area of pigmented area fork-shaped................................................................... 11

- Tip area of pigmented area not fork-shaped................................................................ 13

11 Pigmented area of subgenital plate present as a thread-like stem ( Li 2002: Fig. 1413I)...................... Longivalvus

- Pigmented area of subgenital plate not present as a thread-like stem............................................ 12

12 Pigmented area of subgenital plate without obvious stem ( Li 2002: Fig. 1416I).............................. Cyclotus

- Pigmented area of subgenital plate with obvious stem ( Smithers 1972: Fig. 728)......................... Psococerastis

13 Pigmented area distally bifurcated....................................................................... 14

- Pigmented area distally not bifurcated.................................................................... 15

14 Longitudinal areas of pigmented area nearly subconical ( Li 2002: Fig. 1502D)........................ Propsococerastis

- Longitudinal areas of pigmented area slender................................................... Dipsocus gen. n.

15 Pigmented area with a slender stem ( Jie et al. 2022: Figs 14–15 )...................................... Ceratostigma

- Pigmented area without a slender stem................................................................... 16

16 Subgenital plate medially with a blocky sclerotized area ( Li 2002: Fig. 1501E).............................. Lubricus

- Subgenital plate medially without a blocky sclerotized area ( Li 2002: Fig. 1419F)........................ Pogonopscus

Figures

FIGURES 1–5. Dipsocus fashengi sp. n., paratype male. 1. Habitus, lateral view; 2. Head, frontal view; 3. Habitus, dorsal view; 4. Forewing; 5. Hindwing.

FIGURES 13–17. Dipsocus fashengi sp. n., holotype female. 13. Habitus, lateral view; 14. Habitus, dorsal view; 15. Habitus, frontal view; 16. Forewing; 17. Hindwing.