New species of Protosticta Selys from Vietnam with a key to the males of the P. curiosa group (Odonata: Platystictidae)
Author
Kompier, Tom
text
Zootaxa
2016
4193
2
347
360
journal article
37813
10.11646/zootaxa.4193.2.9
82b05856-1eeb-41d1-bc8b-c2dcb7883310
1175-5326
166958
52692E2F-8D7D-4C55-8A04-917C7D2A4D3D
Key to the males of the
P. c u r i o s a
group of the genus
Protosticta
Notes
.
P. curiosa
Fraser
and
P. khaosoidaoensis
Asahina
have not been recorded in Vietnam, but occur in Thailand and could conceivably also occur in Vietnam. The
curiosa
group of the genus
Protosticta
is highly speciose and additional new discoveries are very likely. Below key should therefore be used as a quick reference only, and specimens should further be checked against the full description with special attention given to the coloration of S9 and the prothorax in addition to the structure of appendages.
FIGURE 17.
Appendages of male
P. satoi
, 24.VII.2016, Cuc Phuong National Park, Ninh Binh Province, T. Kompier leg.
FIGURE 18.
Thorax of male
P. satoi
, 24.VII.2016, Cuc Phuong National Park, Ninh Binh Province, T. Kompier leg.
1. Paraprocts in ventral view halfway with a long and slender spine inward directed and another directed inward and posteriad at the apex.....................................................................................
P. spinosa
- Paraprocts without long and slender inward-directed spines.................................................... 2
2. Paraprocts in ventral view form an almost diamond-shaped figure, their apical halves broad and not increasingly directed cau- dad (
Fig. 20
)......................................................................................... 3
- Paraprocts in ventral view do not form a diamond shape, their apical halves slender and increasingly directed caudad, finally running more or less parallel (
Fig. 21
) or distinctly pointed and directed caudad, never meeting........................ 7
3. Thorax almost completely black, but posterior half of metepisternum with larger or smaller pale spot................... 4
- Thorax with largely pale metepisternum and metepimeron..................................................... 5
4. Thorax black with white elongated spot covering posterior half of metepisternum................
P. beaumonti
(dark form)
- Thorax black or at most with tiny white spot, not covering half of metepisternum.....................
P. nigra
spec. nov.
5. Thorax strikingly patterned black-white-black (with more or less distinct greenish metallic shine dorsally) with broad black stripe over metapleural suture, equal in width to pale stripe over metepisternum.................................... 6
- Thorax with at most a thin stripe over metapleural suture, never of equal width as pale stripe over metepisternum and brownish mesepimeron....................................................................................
P. s a t o i
6. Cerci in lateral view with a prominent dorsal tooth halfway (Fig. 22).......................................
P. caroli
- Cerci in lateral view lacking a prominent dorsal tooth at the halfway point where they curve downward (
Fig. 23
)..
P. socculus
7. Thorax strikingly patterned black-white-black with broad black stripe over metapleural suture, similar in width to the pale stripe over the metepisternum or distinct if narrower........................................................... 8
- Thorax with at most a thin brownish stripe over metapleural suture, never similar in width to the pale stripe over the metepis- ternum, and brownish mesepimeron...................................................................... 12
8. Cerci in lateral view with a prominent dorsal tooth halfway where they curve downward (Fig. 22)...................... 9
- Cerci in lateral view without a prominent dorsal tooth at the halfway point where they curve downward (
Fig. 23
)......... 1 0
9. Cerci distinctly three-lobed apically and paraprocts scalpel-shaped with raised cup, black line over metapleural suture distinct but narrow..........................................................................
P. albifrons
spec. nov.
- Cerci not three-lobed and paraprocts with hollowed-out tip, black line over metapleural suture wide, extending onto metepim- eron.............................................................
P. khaosoidaoensis
(not recorded in Vietnam)
10. Cerci smoothly curved, lateral ridge extending into apical lobe, which is decidedly longer than wide, and drooping............................................................................................
P. proboscis
spec. nov.
- Cerci smoothly curved, but lateral ridge not extending into apical lobe, which is not longer than wide and not drooping... 11
11. Paraprocts with a triangular saucer-like open area, without a prominent spine on their posterior margin, placed at the anterior end of their apical half...........................................................................
P. linnaei
- Paraprocts with a hollowed out apical half, often decidedly slipper-shaped, with a long spine on their posterior margin..................................................................................................
P. socculus
12. Thorax with two small pale yellow spots, one each at the posterior end of the mesepisternum and mesepimeron...................................................................................................
P. pseudocuriosa
- Thorax without two small yellow spots at the posterior end of mesepisternum and mesepimeron................................................................................................
P. curiosa
(not recorded in Vietnam)