Helicopsyche Feropsyche
Creators: name: Johanson, Kjell Arne
name: Holzenthal, Ralph W.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Helicopsychidae
Helicopsyche

description: 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.
description: Published as part of Johanson, Kjell Arne & Holzenthal, Ralph W., 2004, Thirteen new species and new distribution records of Helicopsyche (Feropsyche) Johanson from Venezuela (Trichoptera: Helicopsychidae), pp. 1-40 in Zootaxa 711 on pages 33-35, DOI: 10.5281/zenodo.169460