Helicopsyche fridae, Johanson, Kjell Arne, 2003

Johanson, Kjell Arne, 2003, The Helicopsyche (Feropsyche) (Insecta, Trichoptera, Helicopsychidae) from Barro Colorado Island, Panama, Zootaxa 283, pp. 1-12 : 5-7

Helicopsyche fridae sp.n.

( Figs 9­16 )

Material examined: Male holotype: Panama, Province of Panama, Barro Colorado Island, Snyder­Molino Trail, marker 3, 18.iii­5.v.1987, H. Wolda, light trap ( NMNH).

Paratypes: Same data as the holotype, except: 1 male: 5.vii.1977 ( UCD). 1 male: 17.vii.1977 ( UCD). 1 male, 1 female: 8.xi.1977 ( NRM from UCD). 5 males, 1 female: 6.xii.1977 ( UCD). 2 males: 27.xii.1977 ( UCD). 1 male: 18.i.1978 ( UCD). 1 male: 25.i.1978 ( UCD). 1 male: 22.ii.1978 ( UCD). 1 male, 1 female: 8.iii.1978 ( UCD). 15 males: 26.iv.1978 ( UCD). 1 male: 17.v.1978 ( UCD). 1 male, 1 female: 24.v.1978 ( UCD). 3 males: 21.vi.1978 ( UCD). 3 males, 2 females: 28.vi.1978 ( NRM from UCD). 4 males: 19.vii.1978 ( NRM from UCD). 2 males, 1 female: 6.ix.1978 ( NRM from UCD). 1 male: 15.xi.1978 ( UCD). 1 male: 20.xii.1978 ( UCD). 3 males, 1 female: 22.xii.1978 ( UCD). 1 male: 27.xii.1978 ( UCD). 1 male: 23.i.1979 ( UCD). 1 male: 22.ii.1979 ( UCD). 1 male: 1.iii.1979 ( UCD). 1 male, 1 female: 28.vi.1979 ( UCD). 8 males: 29.xi.1979 ( UCD). 16 males: 18.iii­5.v.1987 ( NRM from NMNH). 27 males: 3.vi­1.ix.1987 ( NMNH). 53 males: 2.ix­29.xii.1987 ( NMNH). 20 males: 30.xii.1987 ­ 5.iv.1988 ( NMNH). 31 males: 27.iv­ 5.vii.1988 ( NMNH). 23 males: 6.vii­4.x.1988 ( NMNH). 30 males: 5.x.1988 ­ 3.i.1989 ( NMNH). 17 males: 4.i­28.iii.1989 ( NMNH). 35 males: 5.iv­4.vii.1989 ( NMNH). 20 males: 5.vii­25.ix.1989 ( NMNH). 17 males: 4.x­30.xii.1989 ( NMNH). 18 males: 3.i­ 27.iii.1990 ( NMNH). 25 males: 25.iv­3.vii.1990 ( NMNH). 19 males: 11.vii­2.x.1990 ( NRM from NMNH). 31 males: 17.x­30.xii.1990 ( NMNH). 17 males: 2.i­26.iii.1991 ( NMNH).

Etymology: fridae , named after my daughter Frida Svare for her valuable support during the progress of this work. The name is to be treated as a noun in genitive case.

Diagnosis. H. fridae sp.n. can be separated from other Helicopsychidae by the dorsal branch of the gonocoxite that is sharply triangular, and has a basimesal lobe longer than in other species.

Description

Head, thorax, and legs: as in H. woldai sp.n.

Wings ( Fig. 9 ): Fore wing 2.8­3.4 (N=36 paratypes, mean=3.2), 3.0 mm (holotype); fork 1 and fork 2 nearly two­fifths the wing length; Dc less than one third the wing length; crossvein R—M short; M1 about 1.5 x longer than stalk M1+2; M2 1/ 5 x the wing length; Crossvein M—Cu1 originates distally to bifurcation of M and meets Cu1 at a distance before bifurcation of Cu1 equal to two­thirds the length of Cu1a; Cu2 bends into wing margin and has crossvein connection to Cu1. Hind wing 2.1­2.5 (N=36 paratypes, mean= 2.3 mm), 2.3 mm (holotype), with 21 hamuli; fork 1 V­shaped; M divides slightly before bifurcation of Rs; crossvein R—M present; crossvein Cu1—M absent; apex rounded.

VIth sternal process ( Figs 10, 11 ) oriented posteroventrad, sub straight; apically rounded, about as long as that in H. woldai sp.n. ( Fig. 10 ); covered by minute microtrichiae; in ventral view ( Fig. 11 ), sub parallel along its length into slightly widened apex, sub apical lamellae present; apex with ventral spines ( Fig. 11 ).

Genitalia ( Figs 12­16 ): Segment IX, lateral view ( Fig. 12 ), anterior lobe located midway on segment, hyperboloid, oriented anterad, anterodorsal margin slightly convex; anteroventral margin shallowly concave; in dorsal view ( Fig. 13 ), with inner margin widely ellipsoid; in ventral view ( Fig. 14 ) without central process on posterior margin; lateral apodeme ( Fig. 12 ) sub straight, fading before anterior margin at anterior lobe apex; tergal transverse apodeme absent; long sternal transverse apodeme present along posterior margin. Segment X, lateral view ( Fig. 12 ), tapering along its length, slightly curving ventrally, apex pointed; ventral margin slightly concave; dorsal margin slightly undulate; basal, dorsal incision absent; in dorsal view ( Fig. 13 ), tongue­shaped, apical notch minute; with about nine equally long megasetae in dorsolateral row starting about midway on segment, and four smaller setae in lateral row at apex. Superior appendage ( Fig. 12 ), clubshaped, oriented laterad. Gonocoxite, lateral view ( Fig. 12 ), generally triangular, with dorsal margin produced dorsally and bent medially into rounded lobe; anterodorsal and posterior margins meeting at a right angle; dorsal margin and posterior apex undulate; apex strongly curved mesad along its length; gonocoxite at midway about 2 x broader than height of central part of Xth tergum ( Fig. 12 ); anterodorsal margin smooth; posteroventral margin slightly concave, smooth; strongly and sharply incised toward basimesal lobe; with well developed process at posteroventral margin. Basimesal lobe, lateral view, very long, produced posteriorly, tuboid, apex pointed, with about eleven long, slender megasetae surrounding apex ( Fig. 14 ); in ventral view ( Fig. 14 ), cone­shaped with smooth margins; median margin sub straight, without marginal setae. Basal plate short ( Fig. 12 ), with irregular dorsal and sub straight ventral margins; in ventral view ( Fig. 14 ), triangular, apex rounded. Phallus ( Figs 15, 16 ): very thick, at midlength strongly bent ventrad; posteroventral part well sclerotized; basal one fourth slightly thicker than mid part; phallic basis present as anterior ring; endotheca strongly produced into irregular dorsal lobe ( Fig. 15 ), and two posterior lobes ( Fig. 16 ); sperm channel as in H. woldai sp.n.

Affinities. Other species having a prominent, cone­shaped basimesal lobe are H. apicauda Flint ( Dominica, Guadeloupe), H. lambda Flint ( Argentina) , H. kalaom Botosaneanu ( Dominican Republic), H. incisa Ross ( Mexico, Costa Rica, Panama), H. flinti Johanson ( Brazil) , H. grenadensis Flint & Sykora ( Grenada) , H. granpiedrana Botosaneanu & Sykora ( Cuba) , and H. woldai sp.n. ( Panama). However, the basimesal lobe of H. fridae sp.n. is longer than in the other species. A single prominent process at the posteroventral margin of the gonocoxite is also present in H. lambda , and H. flinti .

Figures

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.