Asymphyloptera chilensis, Sinclair, Bradley J., 2015

Sinclair, Bradley J., 2015, New World species of Asymphyloptera Collin (Diptera: Empididae: Clinocerinae), Zootaxa 4048 (4), pp. 553-564 : 556

Asymphyloptera chilensis sp. nov.

( Figs 1 , 9 )

Type material. HOLOTYPE, ♂ labelled: “ CHILE, Region X (Las Lagos)/ Parque Nacional Puyehue, Rio/ Anticura above Salto R. Anticura/ S40º40.28' W72º10.21'; 420m / 4.xii.2008 GW Courtney ( CH 08-39)”; “ HOLOTYPE / Asymphyloptera / chilensis / Sinclair [red label] [dissected]” ( CNC). PARATYPE: Chile: Same data as holotype (1 ♀, CNC).

Recognition. This species may be distinguished by dark pleura and legs; five dorsocentrals; strongly produced hypandrium, expanded and complex apex of the phallus and broad ejaculatory apodeme.

Description. Male. Postpedicel globular with long, slender apical extension, arising subapically. Ocellar setae short, stout, subequal in length between anterior and posterior ocelli. Labrum 3/4 length of clypeus; palpus brown, subequal to labrum, tapered to slender apex.

Pleura dark brown without bluish pruinescence. Chaetotaxy very short and stout; 1 pprn short, very slender; 2 npl; 5 dc, anterior dc offset; 2 apical sctl, 2X longer than prescutellar dc, 2 pairs of lateral sctl setulae. Legs dark brown; femora with antero- and posteroventral rows of pale, slender setae, longer on fore femur, subequal in length to width of fore femur; fore tibia with biserial row of erect setae. Wing length 2.2 mm ( Fig. 1 ); crossvein h distinct; base of wing with 4–5 somewhat thickened setae along posterior margin. Halter pale at base of stem.

Male terminalia ( Figs 1 , 9 ): Cercus with short anterior expansion and narrow posterior lobe. Hypandrium broadly produced posteriorly; apex prolonged and tapered as postgonites; apical margin of postgonite extended anteriorly, narrow; posteroapical margin finger-like. Epandrium narrow, with short setae on apical half. Surstylus short, slender, slightly arched lobe; apex rounded. Phallus greatly expanded apically, with broad fluted membrane and long anterior rod; ejaculatory apodeme laterally flattened and expanded.

Female. Similar to male. Terminalia not dissected.

Etymology. Named after the type locality.

Distribution. Known only from the type locality in Chile in PN Puyehue, collected on rocks in Rio Anticura ( Fig. 3 ). This is the first record of Asymphyloptera from Chile, long presumed to occur in this region of South America.

Figures

FIGURES 1 – 3. 1, Habitus of Asymphyloptera chilensis sp. nov., male holotype, prior to drying, mounting and dissection; 2, A. chiricahua sp. nov., female wing; 3, type locality of A. chilensis sp. nov., PN Puyehue, Rio Anticura (photograph G. W. Courtney). Scale bars = 1.0 mm. Abbreviations: plp—palpus; M—medial veins; R—radial veins.

FIGURES 8 – 12. Antenna and terminalia of Asymphyloptera, lateral views. 8, A. cajanuma sp. nov., male; 9, A. chilensis sp. nov., male; 10, A. chiricahua sp. nov., antenna; 11, A. chiricahua sp. nov., male; 12, A. chiricahua sp. nov., female. Scale bars = 0.1 mm. Abbreviations: cerc—cercus; ej apod—ejaculatory apodeme; epand—epandrium; hypd—hypandrium; ph—phallus; sur—surstylus.