Helicopsychidae

Johanson, Kjell Arne, 2003, The Helicopsyche (Feropsyche) (Insecta, Trichoptera, Helicopsychidae) from Barro Colorado Island, Panama, Zootaxa 283, pp. 1-12 : 8-9

Key to the males of Helicopsychidae from Barro Colorado Island

1 Postantennal setal warts strongly enlarged and larger than the cephalic setal warts in

lateral view (fig. 42A in Johanson 2002); cephalic setal warts anteriorly swollen and separate from head capsule (fig. 42A in Johanson 2002) ................ H. tuxtlensis Bueno ­ Postantennal setal warts much smaller than the cephalic setal warts; cephalic setal warts not swollen anteriorly and fused with head capsule along its length .................. 2

2 Xth tergum with row of megasetae starting proximally on the segment; gonocoxite strongly sickle­shaped; basimesal lobe tuboid; phallus uniformly curving ventrally along its length ................................................................................. H. vergelana Ross

­ Xth tergum with megasetae present only on mid and distal part of the segment ( Figs 5 , 13 ); gonocoxite shape different ( Figs. 4 , 12 ); basimesal lobe cone­shaped ( Figs 6 , 14 ); phallus strongly curving ventrally at midlength ( Figs 7 , 15 ) ....................................... 3

3 Gonocoxite sharply incised toward basimesal lobe ( Fig. 12 ); gonocoxite with basimesal lobe very long ( Fig. 12 ); gonocoxite sharply triangular ( Fig. 12 ); posterior margin of gonocoxite with prominent processes ( Fig. 12 ) ................................. H. fridae sp.n.

­ Gonocoxite widely incised toward basimesal lobe ( Fig. 4 ); posterior margin of gonocoxite with row of prominent processes ( Fig. 4 ) or processes are lacking ................. 4

4 Gonocoxite ( Fig. 4 ) parallelogram­shaped, and with row of processes at posteroventral margin; basimesal lobe ( Fig. 6 ) with smooth lateral and median margins, and bearing about three stout megasetae .................................................................... H. woldai sp.n.

­ Gonocoxite widens slightly distally; posteroventral margin without processes; basimesal lobe with irregular median and lateral margins associated with numerous setae and no stout megasetae ................................................................................. H. incisa Ross

Figures

FIGURES 1 ­ 8. Helicopsyche woldai sp. n., male holotype. 1, right wings; 2, abdominal segment VI, lateral view; 3, abdominal VIth sternal process, ventral view; 4, genitalia, lateral view; 5, genitalia, dorsal view; 6, genitalia, ventral view; 7, phallus, lateral view; 8, phallus, ventral view.

FIGURES 9 ­ 16. Helicopsyche fridae sp. n., male holotype. 9, right wings; 10, abdominal segment VI, lateral view; 11, abdominal VIth sternal process, ventral view; 12, genitalia, lateral view; 13, genitalia, dorsal view; 14, genitalia, ventral view; 15, phallus, lateral view; 16, phallus, ventral view.