Diplonevra hypermeka, Corona, Emily M. & Brown, Brian V., 2005

Corona, Emily M. & Brown, Brian V., 2005, The Central American species of Diplonevra Lioy (Diptera: Phoridae), Zootaxa 1050, pp. 21-38 : 31

Diplonevra hypermeka new species

Figs. 4 , 17 , 23

Recognition. This species keys to D. impressa (= D. setigera herein) in Borgmeier’s (1969) key, but differs in the setation at the base of the hind femur. In D. hypermeka there is a group of setae, including 3 long ones and several shorter ( Fig. 4 ), whereas D. setigera has 2–3 short setae only ( Figs. 5–11 ). In Central America, this species is most like to be confused with D. truncatiseta , whose setae ( Fig. 12 ) differ markedly, and whose single reduced seta is easily visible with light microscopy.

Description. Male (female unknown). Body length 2.65–3.35 mm. Frons blackbrown, extremely slightly punctate. Mean frontal width 0.55 head width. Flagellomere 1 dark brown, spherical. Arista brown. Palpus light brown; apex with large, pointed setae that range in length from 0.08–0.15 mm and many small, fine setulae along margin laterally. Proboscis yellow­brown and elongate, narrow. Scutum and scutellum blackbrown; anterior scutellar seta about two­thirds length but only one­half thickness of posterior seta. Pleuron dark brown, tomentose, shiny. Legs yellow. Medial region of posterior face of hind trochanter with 2 thick setae and several slightly shorter, thick setae ( Fig. 4 ). Ventrobasal region of posterior face of hind femur with process containing three long, thick setae and several shorter setae ( Fig. 4 ). Apex of hind femur with narrow darkening dorsoapically. Wing evenly dark brown, vein R2+3 present, fork large ( Fig. 17 ). Costal length 0.52–0.57 wing length. Costal setae 0.07–0.15 mm. Mean costal sector ratio 5.7:2.3:1.0; range 5.4–6.0:2.0–2.7:1.0. Base of radial sector with 1 small seta. Halter brown. Abdominal tergites black­brown. Venter of abdomen dark gray. Epandrium brown and glossy. Left side of epandrium with posterior margin setose, with two long and several short setae. Right side of epandrium ( Fig. 23 ) with posterior margin setose, with several long, posteroventral setae almost as long as length of epandrium (0.7–1.0). Left side of hypandrium tomentose except posterodorsal corner black and glossy. Right side of hypandrium glossy and brown. Cercus yellow­brown, setose. Stalk of cercus yellowbrown, setose ventroapically and laterally.

Geographical distribution. Costa Rica.

Derivation of specific epithet. Derived from Greek hypermekes meaning extremely long, referring to the long setae on the posterior margin of the right side of the epandrium.

Holotype. ɗ, COSTA RICA: San Jose: Zurquí de Moravia, 10.05°N, 84.02°W, vi.1995, P. Hanson, Malaise trap, 1600m [ LACM ENT 091504] ( LACM).

Paratypes. COSTA RICA: Alajuela: Estación Biol. San Ramon, 10.06°N, 84.50°W, 1ɗ, 7–9.vii.2000, J. Ashe, R. Brooks, Z. Falin, FIT #84 ( LACM); Cartago: 4 km NE Canon Genesis II, 9.71°N, 83.91°W, 2ɗ, ii.1995, 1 ɗ, vi.1995, 2 ɗ, viii.1995, 1 ɗ, xi–xii.1995, 2 ɗ, iii.1996, 3 ɗ, iv.1996, 2 ɗ, vii.1996, 1 ɗ, ix.1996, 1 ɗ, x.1996, 6 ɗ, xi.1996, P. Hanson, Malaise trap, 2350 m ( LACM), La Cangreja, 9.8°N, 83.97°W, 9ɗ, vi–vii.1992, P. Hanson, Malaise trap, 1950 m ( LACM), Tapanti, 9.76°N, 83.78°W, 9ɗ, 17–20.vii.2000, J. Ashe, R. Brooks, Z. Falin, FIT #192, 1200 m ( LACM); Heredia: Varablanca, Refugio 2000 m, 10.18°N, 84.11°W, 1ɗ, 9–12.ii.2002, Brown, Walker, Gonzalez, Gressitt Malaise trap, 2000 m ( LACM); Puntarenas: Monteverde, 8ɗ, 28.v–1. vi.1988, 17 ɗ, 1–5. vi.1988, 1 ɗ, 9–18.iii.1995, B. V. Brown, Malaise trap, 1700 m ( LACM); San José: 16 km S. E mpalme, 6ɗ, iii–iv.1989, P. Hanson, I. Gauld, Malaise trap, 2600 m ( LACM), 19 km S, 3 km W Empalme, 9.65°N, 83.87°W, 1ɗ, iii–iv.1989, 2 ɗ, xi–xii.1989, 1 ɗ, ix.1992, P. Hanson, Malaise trap, 2600 m ( LACM), 20 km S. Empalme, 9.63°N, 83.85°W, 20ɗ, ix.1988, 9 ɗ, iii–iv.1989, 11 ɗ, iii–vi.1990, P. Hanson, I. Gauld, Malaise trap, 2800m ( LACM), Escazu, 9.9°N, 84.15°W, 2ɗ, ix–x.1996, C. Flores, Malaise trap, 2000 m ( LACM), Estación Biol. Cuerici, 9.55°N, 83.67°W, 1ɗ, i.2000, P. Hanson, Malaise trap, 2600 m ( LACM), 6 km N. San Gerardo, 9.95°N, 84.05°W, 1ɗ, viii.1992, P. Hanson, Malaise trap, 2000 m ( LACM), Zurquí de Moravia, 10.05°N, 84.02°W, 1ɗ, i.1989, 1 ɗ, iii.1989, 2 ɗ, v.1989, 1 ɗ, vii.1990, 4 ɗ, ix–x.1990, 1 ɗ, i.1991, 1 ɗ, vii.1991, 2 ɗ, vi.1992, 1 ɗ, iv–v.1993, 1 ɗ, 1–15. vi.1993, 1 ɗ, 2–8. iii.1995, 2 ɗ, iv.1995, 44ɗ, v.1995, 22 ɗ, vi.1995, 1 ɗ, ix.1995, 5 ɗ, x.1995, 12 ɗ, i.1996, 1 ɗ, iii.1996, P. Hanson. Malaise trap. 1600 m ( EMUS, INBC, LACM, MCZC, MUCR, NHRS, SEMC, USNM).

Figures

FIGURES 1 – 6. Diplonevra spp. Basal region of posterior face of hind tibia and trochanter (scanning electron micrographs). Fig. 1. D. ereba new species. Fig. 2. D. gnoma new species. Fig. 3. D. goliatha new species. Fig. 4. D. hypermeka new species. Figs. 5 – 6. D. setigera (Malloch), Zurquí de Moravia, Costa Rica. Abbreviations: dms – dorsomedial setulae of trochanter; ls – lateral setulae of trochanter.

FIGURES 14 – 19. Diplonevra spp. Left wings.

FIGURES 20 – 25. Diplonevra spp. Male terminalia, right lateral.

FIGURES 7 – 12. Diplonevra spp. Basal region of posterior face of hind tibia and trochanter (scanning electron micrographs). Figs. 7 – 8. D. setigera (Malloch), second specimen from Zurquí de Moravia, Costa Rica. Fig. 9. D. setigera (Malloch), Placerita Canyon, California, USA. Figs. 10 – 11. D. setigera (Malloch), Petropolis, Brazil. Fig. 12. D. truncatiseta new species.