Ceratostigma Li 2002
Creators: name: Jie, Lulan
name: Liang, Feiyang
name: Liu, Xingyue
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Psocidae
Ceratostigma

description: Ceratostigma Li, 2002
Ceratostigma Li, 2002: 1595.
Type species: Ceratostigma gracilis Li, 2002: 1595, by original designation.
Diagnosis. Forewing with veins on basal two-thirds yellowish or grayish white; Sc usually ending free; Rs and M meeting in a point or fused for a short distance; CuA 1-2 and M+CuA 1 nearly in a line. Male genitalia: Hypandrium of asymmetrical, simple plate, medially with a ridge. Female genitalia: Epiproct subtriangular. Paraproct subtriangular. Subgenital plate with a short and distally rounded egg guide; pigmented area slightly sclerotized, roughly T-shaped, stem of T-shaped marking more than two times as long as basal width. Dorsal valve of gonapophyses broad, pointed at tip, inner margin with a strongly sclerotized area at base; external valve with a triangular posterior lobe.
Distribution. China, Indonesia.
Key to species of Ceratostigma
1 Male ............................................................................................... 2
- Female............................................................................................. 5
2 Radial fork with branches diverging at an angle less than 90°................................................... 3
- Radial fork with branches diverging at an angle more than 90° (Fig. 23).................... Ceratostigma stagona sp. n.
3 Radial fork with branches diverging at an angle of about 60°; epiproct distally pointed.............................. 4
- Radial fork with branches diverging at an angle of about 30°; epiproct distally rounded (New et al. 2002: figs 124, 128).................................................................... Ceratostigma lisae (Thornton, 1984) comb. n.
4 Hypandrium distally narrowed (Figs 20–21)........................ Ceratostigma macrostigmatum (Li & Yang, 1987)
- Hypandrium distally not narrowed (Figs 5–6)....................................... Ceratostigma gracilis Li, 2002
5 Cells r3 and r5 almost hyaline; radial fork with branches diverging at an angle less than 90° (Thornton 1984: fig. 154)..................................................................... Ceratostigma lisae (Thornton, 1984) comb. n.
- Cells r3 and r5 brown; radial fork with branches diverging at an angle of about 90°................................. 6
6 Basal one-fifth of the forewings with a slightly curved grayish white stripe; pigmented area in egg guide flatted at tip (Figs 8, 14–15)...................................................................... Ceratostigma gracilis Li, 2002
- Basal one-fifth of the forewings with a V-shaped grayish white marking; pigmented area in egg guide pointed at tip (Figs 34, 43–44)........................................................................ Ceratostigma stagona sp. n.
description: Published as part of Jie, Lulan, Liang, Feiyang & Liu, Xingyue, 2022, Revision of the bark louse genus Ceratostigma Li, 2002 (Psocodea: Psocidae: Psocinae) with description of a new species from China, pp. 196-206 in Zootaxa 5168 (2) on page 197, DOI: 10.11646/zootaxa.5168.2.6, http://zenodo.org/record/6877303