Helicopsyche (Feropsyche) paprockii, Johanson, Kjell Arne & Malm, Tobias, 2006

Johanson, Kjell Arne & Malm, Tobias, 2006, Seven new Helicopsyche (Feropsyche) Johanson, 2002 from the Neotropical region and Nearctic Mexico (Insecta: Trichoptera: Helicopsychidae), Zootaxa 1208, pp. 1-24 : 11-13

Helicopsyche (Feropsyche) paprockii , new species

Fig. 26–33 , 62

Helicopsyche paprockii is unique by having a short segment IX, a slightly upward curving tergum X with a pair of megasetae rows along the lateral margins, and a short triangular basimesal lobe without megasetae. With respect to genitalia, especially the shape of the gonocoxite, H. paprockii is very similar to H. cubana , H. limnella , H. planata , H. lambda Flint , H. incisa , H. flinti , and H. blantoni , new species, but is separated by other genitalic characters further described in the remarks below.

Male head. Cephalic warts oval; postantennal warts tuboid, slightly longer than scape width. Antenna with scape as long as eye diameter and maxillary palp segments; antenna with 40 flagellomeres but no distal setae ring.

Male wings. Venation as in Fig. 26 (forewing is slightly damaged). Fore wing grey brownish, length 4.3 mm; hind wing length 3.4 mm, with 27 hamuli.

Male abdomen and genitalia ( Fig. 27–33 ). Sternal process VI about half as long as its segment length ( Fig. 27–28 ), straight in lateral view ( Fig. 27 ), oriented posteroventrally, slightly narrowing towards middle, apex rounded, and divided into lamellae ( Fig. 28 ). Anterior lobe of segment IX ellipsoid in lateral view ( Fig. 29 ), oriented anteriad and slightly ventrally, anterodorsal margin slightly concave and longer than the concave anteroventral margin; in dorsal view ( Fig. 30 ) inner margin uniformly hyperboloid; in ventral view ( Fig. 31 ) central posterior process wide and posteriorly rounded. In lateral view ( Fig. 29 ), lateral apodeme oriented anteroventrally, slightly curving, equally wide along its length, uniformly strong toward anterior margin; sub­marginal line present; tergal transverse apodeme absent; sternal transverse apodemes weak. Tergum X oriented posteroventrad in lateral view ( Fig. 29 ), curving slightly upward toward apex, apex rounded; in dorsal view ( Fig. 30 ) about equally wide along its length, apical notch wide and shallow, with about 14 pairs of equally long megasetae in marginal line starting at anterior base of segment. Superior appendage short, thick, weakly club­shaped ( Fig. 29 ). Primary branch of gonocoxite generally triangular in lateral view ( Fig. 29 ), narrowest at base, dorsal margin weakly undulate; apex triangular and pointing posteriorly, narrowest part of primary branch about as wide as maximum height of tergum X and about half the tergum X width ( Figs. 29, 30 ); anterodorsal margin nearly straight, smooth; posteroventral margin irregular with central group of 3 produced setal bases. Basimesal lobe small, without megasetae, produced in lateral view, triangular in lateral and ventral view, with divergent, curving median margins ( Figs. 29, 31 ). Basal plate nearly straight in lateral view ( Fig. 29 ), posterior half thick, anterior half tapering; sharply triangular in ventral view ( Fig. 31 ) with needle­shaped apex. In lateral view ( Fig. 32 ), ventral margin of phallus gently curved along its length; in lateral and ventral view ( Fig. 32, 33 ) basal part nearly 2x thicker than narrowest central region. Phallic bases absent. Endotheca strongly produced, posteroventral part heavily sclerotized. Sperm channel divided inside phallus into thick posterior and narrow anterior part.

Holotype male: Brazil: Minas Gerais: Serra do Cipo, 28.ix.1994 [H. Paprocki] (NMNH, alcohol).

Distribution: Brazil (Minas Gerais) ( Fig. 62 ).

Etymology: paprockii , derived from the name of the collector of the holotype (H. Paprocki).

Remarks: The gonocoxite primary branch of H. paprockii is similar to that of H. cubana , but H. cubana has a longer segment IX with dorsal anterior lobe, megasetae on tergum X arranged in a central row, and produced tuboid basimesal branches of gonocoxite having apical megasetae. Both H. limnella and H. planata are distinguished by their dorsally located anterior lobe of segment IX, a very long tergum X, a less sharply triangular primary branch of the gonocoxite, and a more triangular­shaped basal plate.

In H. lambda the sternal process VI is slightly curved more posteriorly and has a spinose apex, the primary branch of the gonocoxite is less triangular and has a deeper concave anterodorsal margin, the basimesal lobe is more strongly produced posteriorly in lateral view and bears about 4 long megasetae. Helicopsyche paprockii is separated from H. incisa by having a sternal process VI with lamellate apex (spinose in H. incisa ), a ventrally located anterior lobe on segment IX, a concave tergum X bearing marginal megasetae in 2 rows, a more triangular basimesal lobe in lateral view, a longer basal plate, and a longer, more slender and evenly curved phallus. Helicopsyche paprockii is distinguished from H. flinti by the lamellate apex of the sternal process VI, the more rounded anterior lobe of segment IX, the primary branch of the gonocoxite being more broadly pointed at apex and the presence of 3 produced setal bases at the posteroventral margin, and in lateral view the longer basimesal lobe. Helicopsyche paprockii is distinguished from H. blantoni by the anterior lobe of segment IX being located ventrally, the higher number of megasetae on tergum X, the primary branch of the gonocoxite with longer dorsal margin, the longer basimesal lobe without megasetae, and the slender phallus.

Figures

FIGURES 26 – 33. Helicopsyche paprockii, new species, holotype. 26 — right wings; 27 — VIth sternal process, lateral; 28 — VIth sternal process, ventral; 29 — genitalia, lateral; 30 — genitalia, dorsal; 31 — genitalia, ventral; 32 — phallus, lateral; 33 — phallus, ventral.

FIGURES 60 – 62. Distribution maps showing the localities of the new species and the new records. 60 — Mexico, showing the distributions of H. curvipalpia (filled square) and H. sinuata (filled circle); 61 — Panama, showing the distributions of H. incisa (filled square), H. chiriquensis, H. linguata, H. woldai and H. incisa (filled circle), H. blantoni and H. woldai (open square), and H. sanblasensis (cross); 62 — Brazil, showing the distributions of H. paprockii and H. cipoensis (filled square).