Phanoperla

Mason, Denise & Stark, Bill P., 2015, Notes On The Genus Phanoperla Banks From Sri Lanka And India (Plecoptera: Perlidae), Illiesia 11 (4), pp. 29-40 : 39-40

Key to Males of Phanoperla Species Known from India and Sri Lanka

( P. ceylonica not included)

1 Known from Sri Lanka ………………………… 2

1’ Known from India ……………………………... 8

2 Hair brushes absent from abdominal sterna ………………...……………………………. nuwara

2’ Hair brush present on at least abdominal sternum 7 ( Fig. 21 ) ……………………...………. 3

3 Rs vein with 2 branches ( Zwick 1982a, Fig. 1e ) …………………………….………………….…… 4

3’ Rs vein with 3-4 branches …………………...…. 6

4 Everted aedeagal sac with at least one linear subapical grouping of large black spines ( Zwick 1982a, Fig. 8d ); median sensilla basiconica on tergum 9 united into a single patch ( Zwick 1982a, Fig. 8a ).………………………..……... nana

4’ Everted aedeagal sac without linear groupings of large black spines; median sensilla basiconica on tergum 9 form a pair of narrow elongate patches ( Zwick 1982a, Fig. 21b ) ..……………… 5

5 Abdominal sternum 6 with a weak hair brush, significantly smaller than the one on sternum 7; basolateral armature on everted aedeagal sac consists of spines slightly larger than those on sac apex ( Zwick 1982a, Fig. 23d ); ventrobasal margin of everted sac without a protruding, bag-like lobe ……………………………….. wedda

5’ Abdominal sternum 6 without hair brush; basolateral armature on everted aedeagal sac consists of spines distinctly longer than those on sac apex ( Zwick 1982a, Fig. 23g ); ventrobasal margin of everted sac bears a protruding, baglike lobe ………………………..… limosa (in part)

6 Median sensilla basiconica on tergum 9 form a pair of narrow elongate patches ( Zwick 1982a, Fig. 21b ).…………………………. limosa (in part)

6’ Median sensilla basiconica on tergum 9 form a single, often V-shaped patch ( Zwick 1982a, Fig. 21a ).………………………………………….…… 7

7 Basolateral armature on everted aedeagal sac forms a long, slender, conspicuously rectangular patch ( Zwick 1982a, Fig. 22d ); dorsum of everted sac lacks a small membranous lobe located near distal end of basolateral spine patch ……………..…… srilanka

7’ Basolateral armature on everted aedeagal sac forms an obscure, small patch of minute spines Zwick 1982a, Fig. 22b ); dorsum of everted sac bears a small membranous lobe near distal end of basolateral spine patch ...…………….. testacea

8 Hair brushes on abdominal sterna 4-5 well developed, but absent on sternum 7 ..………………………………………..… sertispina

8’ Hair brushes absent from abdominal sterna 4-5, but usually well developed on sternum 7 ( Fig. 21 ).………………………………………….….…. 9

9 Rs vein with 3-4 branches.………..….. maindroni

9’ Rs vein with 2 branches ( Zwick 1982a, Fig. 1e ) ……………………...……………..……….….…. 10

10 Aedeagal tube bearing a prominent, sclerotized pair of ventroapical horns ( Zwick 1982a, Fig. 7a ) ...………………………………………….… cornuta

10’ Aedeagal tube without sclerotized ventroapical horns ………………………….…………….…... 11

11 Subapical area of everted aedeagal sac armed, in part, with one or more discrete linear or circumlinear patches of very large black spines ( Zwick 1982a, Fig. 9a ) .....................................… 12

11’ Largest spines of subapical area of everted aedeagal sac not extremely enlarged, or forming discretely isolated linear patches ( Zwick 1982a, Fig. 25a, g ) …………………………………........ 14

12 Largest black spines on everted aedeagal sac form a complete, irregularly double, subapical ring ( Zwick 1982a, Fig. 9a ) ………………... parva

12’ Largest black spines on everted aedeagal sac not organized into a complete ring ...………... 13

13 Largest black spines on everted aedeagal sac form a single, almost complete subapical row ( Zwick 1982a, 6d); aedeagal sac without a membranous dorsal finger-like lobe …………………………………………. himalayana

13’ Largest black spines on everted aedeagal sac form three widely separated subapical, linear groupings ( Zwick 1982a, Fig. 13c ); aedeagal sac bearing a membranous, dorsal finger-like lobe ..………………………………………….. peniculus

14 Apical region of everted aedeagal sac bulbshaped and densely armed with multiple rows of spines which decrease regularly in size approaching apex ( Zwick 1982a, Fig. 25d ); tube surrounding basal part of sac bears four lobes armed with minute spicules.…………… schmidi

14’ Apical region of everted aedeagal sac not bulbshaped and spines not organized in welldefined rows ( Zwick 1982a, Fig. 25g ); tube apex without lobes ……………….…………… amorpha

Figures

Figs. 19-21. Phanoperla adult structures. 19. P. peniculus head and pronotum. 20. Putative P. peniculus female abdominal sterna 8-9. 21. P. testacea male abdominal sterna 7-9 showing ventral brush on sternum 7.

Figs. 1-6. Phanoperla sp. Sl-D egg. 1. Lateral aspect. 2. Collar end (a = anchor; c = collar; fci = follicle cell impression; p = punctation). 3. Collar end with most of anchor intact. 4. Lid and micropylar zone. 5. Collar and damaged anchor, apical aspect. 6. Micropyles (m = micropyle).

Figs. 7-12. Putative Phanoperla nana egg. 7. Lateral aspect. 8. Collar end. 9. Chorionic detail surrounding collar. 10. Lid and micropylar zone. 11. Collar and anchor. 12. Micropyles.

Figs. 22-27. Phanoperla wedda egg. 22. Lateral aspect. 23. Collar end (s = stria). 24. Anchor and collar (at = anchor tentacle). 25. Lid and micropylar zone. 26. Anchor and collar, apical aspect. 27. Micropyles (m = micropyle).

Figs. 13-18. Putative Phanoperla peniculus egg. 13. Lateral aspect. 14. Collar end. 15. Equatorial chorionic detail. 16. Lid. 17. Anchor, oblique apical aspect. 18. Collar, lateral aspect.