Thagria
Creators: name: Fan, Zhi-Hua
name: Li, Zi-Zhong
name: Dai, Ren-Huai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Thagria

description: Key to species (males) of Thagria from Guangxi, China
1. Head produced slightly beyond anterior margin of eyes, portion beyond eyes less than 1/2 of entire length of crown, apex bluntly rounded (Figs. 6, 38, 60, 85, 97, 119, 130, 140, 153, 164, 191, 249, 259; Fan et al. 2013: 142, Fig. 1)............. 2
- Head produced strongly beyond anterior margin of eyes, portion beyond eyes about or over 1/2 of entire length of crown, apex sharply angulate (Figs. 16, 26, 50, 109, 202, 214, 224)....................................................... 15
2. Clypellus with base inflated, as wide as or wider than clypeus at juncture of clypeal suture (Figs. 9, 41, 63, 88, 100, 122, 143, 167, 194, 252, 262; Fan et al. 2013: 142, Fig. 3)............................................................. 3
- Clypellus with base flattened, narrower than clypeus at juncture of clypeal suture (Figs. 133, 156)..................... 4
3. Segment X with ventral processes exposed (Figs. 65, 90, 102, 145, 169, 196, 254; Fan et al. 2013: 143, Fig. 8)........... 5
- Segment X with ventral processes concealed (Figs. 11, 43, 124, 264)........................................... 12
4. Pygofer processes in lateral view curved, long, extending beyond apex of caudoventral lobe; segment X processes in lateral and dorsal views concealed; dorsal connective in dorsal view Y-shaped; paraphysis in dorsal view asymmetrical, with two processes distally; style in dorsal view reaching middle of paraphysis, without process (Figs. 134, 135, 137)..... T. matsumurai
- Pygofer processes in lateral view short, straight and not reaching apex of caudoventral lobe; segment X without process; dorsal connective in dorsal view annular; paraphysis in dorsal view symmetrical, without process; style in dorsal view extending beyond apex of paraphysis, with numerous serrations distally (Figs. 157, 159, 160).............. T. multispinosa sp. nov.
5. Dorsal connective in dorsal view U-shaped................................................................ 6
- Dorsal connective in dorsal view V-shaped or C-shaped...................................................... 10
6. Paraphysis in dorsal view excavated distally................................................................ 7
- Paraphysis in dorsal view entire or submedially concave....................................................... 8
7. Paraphysis in dorsal view with base with one digital process (Figs. 92, 95)................................. T. digitata
- Paraphysis in dorsal view with base without process (Figs. 104, 107)........................................ T. fossa
8. Paraphysis in dorsal view with left margin submedially concave, right margin forming fold, expanded and with two spines dis- tally; style in dorsal view narrowed to tip, reaching middle of paraphysis (Fig. 67).................. T. decussata sp. nov.
- Paraphysis in dorsal view entire, with one or three processes; style in dorsal view with one spine on apex, extending just beyond base of aedeagus................................................................................ 9
9. Paraphysis broad at base, abruptly narrowed distally, with one process basally (Figs. 147, 150)............... T. multipars
- Paraphysis gradually narrowed toward apex, nearly parallel, with three processes: one basally, two apically (Figs. 171, 174).................................................................................. T. paramultipars sp. nov.
10. Dorsal connective C-shaped; paraphysis in dorsal view without process (Figs. 196, 198)................... T. periserrula
- Dorsal connective V-shaped; paraphysis in dorsal view with one or two processes.................................. 11
11. Segment X ventral processes in lateral view extending beyond the apex of pygofer lobe; paraphysis base in dorsal and lateral views with paired processes, apex toothed (Fan et al. 2013: 143 Figs. 7, 9, 10)............................ T. albofascia
- Segment X ventral processes in lateral view not reaching the apex of pygofer lobe; paraphysis base in dorsal and lateral views without process, apex with one hooked process and with one secondary spine (Figs. 253, 256, 257).... T. trifasciata sp. nov.
12. Paraphysis in dorsal view bifurcate apically, with two unequal length spines...................................... 13
- Paraphysis in dorsal view entire, not bifurcate apically, with two adjacent spines (Fig. 126).......... T. irregularis sp. nov.
13. Dorsal connective in dorsal view with proportion of stem to arm length about 1:3; style in dorsal and lateral views with base broad, tapered distally, reaching approximately middle of paraphysis............................................ 14
- Dorsal connective in dorsal view with proportion of stem to arm length about 1:1.8; style in dorsal and lateral views short, throughout narrow, extending just beyond base of paraphysis (Figs. 264, 266, 268).................... T. webbi sp. nov.
14. Forewing with numerous ivory transparent markings; pygofer processes in lateral view with apex bluntly broad; two apical processes of paraphysis with length ratio about 2.5:1 (Figs. 6, 10, 13, 14)........................ T. biprocessa sp. nov.
- Forewing with four black markings distally; pygofer processes in lateral view pointed apically; two apical processes of paraph- ysis with length ratio as or less than 2:1 (Figs. 38, 42, 45, 46, 48, 49)................................ T. circumcinata
15. Paraphysis with processes............................................................................ 16
- Paraphysis without process............................................................................. 17
16. Style in dorsal view bifurcate near middle, inner branch with some little teeth (Figs. 231)............ T. triangula sp. nov.
- Style in dorsal view entire, not bifurcate, apex curved to inside, subapex with one spine directed downward (Fig. 33).................................................................................................... T. bispina
17. Segment X ventral processes with edges glabrous; style bifurcate distally or medially, with two or more processes, and edges glabrous........................................................................................... 18
- Segment X ventral processes with edges serrate; style entire, with one subapical projection and edges serrate distally (Figs. 113, 116)..................................................................................... T. furcata
18. Style with three or four processes on apex, subapex or middle, without secondary process in dorsal and lateral views (Figs. 209, 211–213)............................................................................ T. philagroides
- Style with two processes apically or bifurcate medially, with or without secondary processes in dorsal and lateral views.. 19
19. Style bifurcate near middle, with secondary processes on inner branch in dorsal and lateral views; aedeagus extending to sub- apex of paraphysis; paraphysis in dorsal view broad over medial 1/3, both ends narrow (Figs. 221–223)........ T. projecta
- Style with two processes apically, without secondary process in dorsal and lateral views; aedeagus about 1/2 as long as paraph- ysis; paraphysis in dorsal view broad at base, narrowed distally................................................ 20
20. Paraphysis in dorsal view broad basally, gradually narrowed toward apex, apex approximately truncate; style in dorsal view slender throughout, with two apical processes twisted to inside (Fig. 57)................................... T. conica
- Paraphysis in dorsal view broad on basal 1/3, sharply narrowed on apical 2/3, apex bluntly broad; style in dorsal view with subapex expanded, with two apical processes not twisted (Fig. 23)........................................ T. birama
description: Published as part of Fan, Zhi-Hua, Li, Zi-Zhong & Dai, Ren-Huai, 2015, Taxonomic study of the leafhopper genus Thagria Melichar (Hemiptera: Cicadellidae: Coelidiinae) from Guangxi, China, pp. 451-491 in Zootaxa 3918 (4) on pages 455-456, DOI: 10.11646/zootaxa.3918.4.1, http://zenodo.org/record/253917