Telosticta, Dow & Orr, 2012

Dow, R. A. & Orr, A. G., 2012, Telosticta, A New Damselfly Genus From Borneo And Palawan (Odonata: Zygoptera: Platystictidae), Raffles Bulletin of Zoology 60 (2), pp. 361-397 : 366

Key to males of Telosticta

1. S10 with a clump of long setae dorsally, interior projection of superior appendage absent ........................................ T. tubau

– S10 without a clump of long setae dorsally, interior projection of superior appendage present .............................................. 2

2. Lateral processes of posterior pronotal lobe longer than half the distance from their origin to the lower margin of the propleuron ( Figs. 3A, D, 9, 17A, B) ....................................................... 6

– Lateral processes of posterior pronotal lobe shorter than half the distance from their origin to the lower margin of the propleuron ( Fig. 3B, C, E, F) .................................................................. 3

3. Antehumeral stripes longer than half the length of the mesepisternum ( Fig. 4E, F). Large species: abdomen 40 mm or more .................................................................... T. gading

– Antehumeral stripes clearly less than half of the length of the mesepisternum ( Fig. 4B, C, G, H). Smaller species: abdomen less than 40 mm .................................................................... 4

4. S8 black dorsally, superior appendage with interior projection barely developed but with a conspicuous clump of long setae originating on and around the projection ( Fig. 6E) ................. ............................................................................. T. santubong

– S8 with at least some blue dorsally, superior appendages with the interior projection better developed but without a clump of long setae originating on and around the projection ( Fig. 6B, F) ........................................................................................... 5

5. Superior appendage with interior projection as in Fig. 6F, in lateral view abruptly down-turned apically at level of dorsal projection ( Fig. 7F) .................................................. T. serapi

– Superior appendage with interior projection as in Fig. 6B, in lateral view only slightly down-turned apically ( Fig. 7B) ...... ............................................................................. T. dupophila

6. Interior projection of superior appendage nearly as long as the distance from the margin of S10 to the base of the projection ( Fig. 12D) .............................................................. T. paruatia

– Interior projection of superior appendage much shorter than the distance from the margin of S10 to the base of the projection ................................................................................................ 7

7. Tip of superior appendage with a conspicuous deep cleft or excision in lateral view (e.g., Fig. 13A–E) ........................... 8

– Tip of superior appendage variously shaped but without such a cleft or excision ( Figs. 13F, 18C, D), or at most a small notch, difficult to see from most angles ( Fig. 7A, C) ................... 11

8. Lower arm of the cleft in end of superior appendage clearly shorter than upper arm in normal lateral view ( Fig. 13A, D, E) ........................................................................................... 9

– Lower arm of the cleft of superior appendage ca same length as upper arm in normal lateral view ( Figs. 13B, C)... T. dayak

9. Arms of tip of superior appendage protruding interiorly, and continued as prominent ridges above the cleft, forming a deep groove between them, clearly visible in dorsal view ( Fig. 12E) ..................................................................... T. ulubaram

– Arms of tip of superior appendage only weakly expanded interiorly, so that only a shallow or no groove is visible in dorsal view ( Fig. 12A, C) .................................................... 10

10. Pale dorsal marks on S8 and S9 ( Fig. 11D), cleft in tip of superior anal appendage ‘V’ shaped ( Fig. 13D) ...... T. kajang

– Pale dorsal marks only on S8 ( Fig. 11A), cleft in tip of superior anal appendage ‘U’ shaped ( Fig. 13A) ................. T. berawan

11. Superior anal appendages with dorsal projection well developed and prominent in either lateral ( Fig. 13F), or dorsal ( Fig. 18A) view ...................................................................................... 12

– Superior anal appendage appendages with dorsal projection small and inconspicuous ..................................................... 13

12. Superior appendage conspicuously expanded from ca half length in both dorsal and lateral views ( Figs. 12F, 13F), the dorsal projection large and directed dorsally, clearly visible in lateral view ( Fig. 12F) ................................................. T. longigaster

– Superior appendage only expanded in apical ca one quarter to one third (depending upon angle viewed from), the dorsal projection inwardly directed ( Fig. 18A), not visible in lateral view ( Fig. 18C) ............................................ T. belalongensis

13. Tip of superior appendage flattened, expanded and strongly folded over on its self to almost form a tube ( Fig. 18D) ........ ................................................................................... T. janeus

– Tip of superior appendage flattened laterally, but not strongly folded ................................................................................... 14

14. Interior projection of superior appendage placed at the point where the basal part of the appendage contracts ( Fig. 6C), labrum only blue narrowly at base, blue markings on S8 and S9 dorsally ( Fig. 5C) ............................................... T. feronia

– Interior projection of superior appendage placed well distal to the point where the basal part of the appendage contracts ( Fig. 6A), labrum mostly blue, blue marking only on S9 dorsally ( Fig. 5A) ................................................................. T. bidayuh