Helicopsyche (Feropsyche)

Johanson, Kjell Arne & Holzenthal, Ralph W., 2004, Thirteen new species and new distribution records of Helicopsyche (Feropsyche) Johanson from Venezuela (Trichoptera: Helicopsychidae), Zootaxa 711, pp. 1-40 : 33-35

Key to males of Venezuelan Helicopsyche (Feropsyche)

(The species H. colombiensis , H. scalaris and H. thelidomus are omitted from the key because no male material exists.)

1 Sternum VI process absent ..................................................................................... 2

— Sternum VI process present.................................................................................... 4

2(1) Gonocoxite, in lateral view, both uniformly wide and nearly straight along its length ( Fig. 62 ); tergum X with about 12 megasetae Helicopsyche laneblina n. sp.

— Gonocoxite, in lateral view, curved posteriorly ( Fig. 67 ) or if nearly straight narrowing at midlength ( Fig. 36 ); tergum X with about 9 megasetae ......................... 3

3(2) Gonocoxite, in lateral view, narrowing at midlength ( Fig. 36 ); gonocoxite at midlength expanded mesally into wide process bearing 2 minute megasetae at apex ( Fig. 37 ); basimesal lobe produced posteriorly ( Fig. 38 ); tergum X apically pointed ( Fig. 37 ) .......................................................... Helicopsyche tachira n. sp.

— Gonocoxite, in lateral view, nearly uniformly wide ( Fig. 67 ); gonocoxite concave mesally; basimesal lobe forming triangular plate ( Fig. 69 ); tergum X apically incised ( Fig. 68 ) ........................................................ Helicopsyche linabena n. sp.

4(1) Gonocoxite boomerang­shaped, generally narrow along its length ......................... ................................................................................. Helicopsyche vergelana Ross

— Gonocoxite of different shape, generally wide along its length ............................ 5

5(4) Gonocoxite divided into dorsal and posterior branches ........................................ 6

— Gonocoxite undivided ............................................................................................ 7

6(5) Dorsal branch of gonocoxite shorter than width of posterior branch ....................... ..................................................................................... Helicopsyche extensa Ross

— Dorsal branch of gonocoxite longer than width of posterior branch........................ ................................................................................... Helicopsyche angulata Flint

7(5) Gonocoxite distally oval or circular ( Fig. 74 , 81 ) ................................................. 8

— Gonocoxite distally rectangular, triangular or club­shaped ................................... 9

8(7) Sternum VI process longer than half its segment length ( Fig. 72 ); segment IX, in lateral view, slightly widely produced anteriorly ( Fig. 74 ); tergum X with approximately 11 dorsal setae ( Fig. 82 ); in dorsal view, X tergum narrow along its length ( Fig. 75 ) .................................................................... Helicopsyche circulata n. sp.

— Sternum VI process shorter than half its segment length ( Fig. 79 ); segment IX, in lateral view, strongly narrowly produced anteriorly ( Fig. 81 ); tergum X with approximately 16 dorsal setae ( Fig. 82 ); in dorsal view, tergum X wide along its length ( Fig. 82 ) .............................................................. Helicopsyche perija n. sp.

9 (7) Gonocoxite dorsally ellipsoid (see Johanson 2002, figs. 67A–H)............................ .................................................................................. Helicopsyche selanderi Ross

— Gonocoxite dorsally hyperboloid ( Fig. 3 , 24 ) ..................................................... 10

10 (9) Gonocoxite incision between primary branch and basimesal lobe weak or absent ( Fig. 19 ) ............................................................................................................... 11

— Gonocoxite with well developed incision between primary branch and basimesal lobe ( Fig. 5 , 12 , 26 ) ............................................................................................. 14

11(10) Gonocoxite basimesal lobe without megasetae ............ Helicopsyche monda Flint

— Gonocoxite basimesal lobe with megasetae ........................................................ 12

12(11) Gonocoxite basimesal lobe triangular.. Helicopsyche merida Botosaneanu & Flint

— Gonocoxite basimesal lobe nearly straight or rounded ( Fig. 19 )......................... 13

13(12) Gonocoxite, in lateral view, sub­rectangular ........... Helicopsyche breviterga Flint

— Gonocoxite, in lateral view, club­shaped ( Fig. 17 ).. Helicopsyche succincta n. sp.

14(10) Gonocoxite basimesal lobe triangular ( Fig. 5 , 12 , 33 ) ........................................ 15

— Gonocoxite basimesal lobe tubular ( Fig. 26 , 45 , 52 , 59 )..................................... 21

15(14) Gonocoxitebasimesallobenearlycompletelyhiddenbyprimarybranchinlateralview .............................................................................................................................. 16

— Gonocoxite basimesal lobe completely visible in lateral view............................. 18

16(15) Sternum VI process about 1/2 the length of segment VI.......................................... ............................................................ Helicopsyche maculisternum Botosaneanu

— Sternum VI process about 1/3 the length of segment VI...................................... 17

17(16) Tergum X strongly convex .................................. Helicopsyche woytkowskii Ross

— Tergum X slightly convex........................................... Helicopsyche fistulata Flint

18(15) Gonocoxite basimesal lobe long ( Fig. 33 ); tergum X with setae on dorsal process ( Fig. 31 ) ......................................................................... Helicopsyche auroa n. sp.

— Gonocoxite basimesal lobe short ( Fig. 5 , 12 ); tergum X with no setose dorsal pro­ cess ( Fig. 3 , 10 )..................................................................................................... 19

19(18) Basal plate exceeds anterior part of anterior lobe of segment IX ( Fig. 3 ); gonocox­ ite with anterodorsal and posteroventral margins nearly parallel ( Fig. 3 )................ ................................................................................. Helicopsyche sucrensis n. sp.

— Basal plate shorter than anterior part of anterior lobe of segment IX ( Fig. 10 ); gonocoxite with anterodorsal and posteroventral margins diverging ( Fig. 10 ) .... 20

20(19) Tergum X widely incised apically ( Fig. 11 ); gonocoxite posteroventral margin with a single, slightly produced setal bases ( Fig. 10 ); tergum X concave ( Fig. 10 ). ................................................................................. Helicopsyche disjuncta n. sp.

— Tergum X not incised apically; gonocoxite posteroventral margin with 3 large, produced setal bases; tergum X convex Helicopsyche grenadensis Flint & Sykora

21(14) Sternum VI process broad in ventral view ( Fig. 49 )................................................. .......................................................................... Helicopsyche venezuelensis n. sp.

— Sternum VI process narrow in ventral view ( Fig. 23 , 42 , 56 ) ............................. 22

22(21) Tergum X slender in dorsal view, apically incised ( Fig. 44 ) .................................... ............................................................................. Helicopsyche neblinensis n. sp.

— Tergum X wide in dorsal view, apically rounded ( Fig. 25 , 58 ) ........................... 23

23(22) Gonocoxite with posteroventral margin concave ( Fig. 24 ) ...................................... ............................................................................. Helicopsyche camuriensis n. sp.

— Gonocoxite with posteroventral margin nearly straight ( Fig. 57 ) ............................ .......................................................................................... Helicopsyche lara n. sp.

Figures

FIGURES 62 – 66. Helicopsyche laneblina, new species, holotype. 62 — male genitalia, lateral; 63 — male genitalia, dorsal; 64 — male genitalia, ventral; 65 — phallus, lateral; 66 — phallus, ventral.

FIGURES 67 – 71. Helicopsyche linabena, new species, holotype. 67 — male genitalia, lateral; 68 — male genitalia, dorsal; 69 — male genitalia, ventral; 70 — phallus, lateral; 71 — phallus, ventral.

FIGURES 36 – 40. Helicopsyche tachira, new species, holotype. 36 — male genitalia, lateral; 37 — male genitalia, dorsal; 38 — male genitalia, ventral; 39 — phallus, lateral; 40 — phallus, ventral.

FIGURES 72 – 78. Helicopsyche circulata, new species, holotype. 72 — sternum VI process, lateral; 73 — sternum VI process, ventral; 74 — male genitalia, lateral; 75 — male genitalia, dorsal; 76 — male genitalia, ventral; 77 — phallus, lateral; 78 — phallus, ventral.

FIGURES 79 – 85. Helicopsyche perija, new species, holotype. 79 — sternum VI process, lateral; 80 — sternum VI process, ventral; 81 — male genitalia, lateral; 82 — male genitalia, dorsal; 83 — male genitalia, ventral; 84 — phallus, lateral; 85 — phallus, ventral.

FIGURES 1 – 7. Helicopsyche sucrensis, new species, holotype. 1 — sternum VI process, lateral; 2 — sternum VI process, ventral; 3 — male genitalia, lateral; 4 — male genitalia, dorsal; 5 — male genitalia, ventral; 6 — phallus, lateral; 7 — phallus, ventral.

FIGURES 22 – 28. Helicopsyche camuriensis, new species, holotype. 22 — sternum VI process, lateral; 22 — sternum VI process, ventral; 24 — male genitalia, lateral; 25 — male genitalia, dorsal; 26 — male genitalia, ventral; 27 — phallus, lateral; 28 — phallus, ventral.

FIGURES 15 – 21. Helicopsyche succincta, new species, holotype. 15 — sternum VI process, lateral; 16 — sternum VI process, ventral; 17 — male genitalia, lateral; 18 — male genitalia, dorsal; 19 — male genitalia, ventral; 20 — phallus, lateral; 21 — phallus, ventral.

FIGURES 8 – 14. Helicopsyche disjuncta, new species, holotype. 8 — sternum VI process, lateral; 9 — sternum VI process, ventral; 10 — male genitalia, lateral; 11 — male genitalia, dorsal view; 12 — male genitalia, ventral; 13 — phallus, lateral; 14 — phallus, ventral.

FIGURES 29 – 35. Helicopsyche auroa, new species, holotype. 29 — sternum VI process, lateral; 30 — sternum VI process, ventral; 31 — male genitalia, lateral; 32 — male genitalia, dorsal; 33 — male genitalia, ventral; 34 — phallus, lateral; 35 — phallus, ventral.

FIGURES 41 – 47. Helicopsyche neblinensis, new species, holotype. 41 — sternum VI process, lateral; 42 — sternum VI process, ventral; 43 — male genitalia, lateral; 44 — male genitalia, dorsal; 45 — male genitalia, ventral; 46 — phallus, lateral; 47 — phallus, ventral.

FIGURES 48 – 54. Helicopsyche venezuelensis, new species, holotype. 48 — sternum VI process, lateral; 49 — sternum VI process, ventral; 50 — male genitalia, lateral; 51 — male genitalia, dorsal; 52 — male genitalia, ventral; 53 — phallus, lateral; 54 — phallus, ventral.

FIGURES 55 – 61. Helicopsyche lara, new species, holotype. 55 — sternum VI process, lateral; 56 — sternum VI process, ventral; 57 — male genitalia, lateral; 58 — male genitalia, dorsal; 59 — male genitalia, ventral; 60 — phallus, lateral; 61 — phallus, ventral.