Amazunculus acreanus Marques, Skevington & Rafael, 2019

Marques, Dayse W. A., Skevington, Jeffrey H. & Rafael, José A., 2019, Revision of the genus Amazunculus Rafael (Diptera: Pipunculidae), with description of six new species, Zootaxa 4577 (3), pp. 439-472: 442-444

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Amazunculus acreanus Marques, Skevington & Rafael

sp. nov.

Amazunculus acreanus Marques, Skevington & Rafael   , sp. nov.

Figs 1–15 View FIGURES 1–5 View FIGURES 6–15 948F3DC9-0762-42B7-B2A8-2 E76005 View Materials D3244

Diagnosis. Antenna dark brown. Wing base darkened. Epandrium moderately inflated. Surstyli symmetrical, subtriangular, not fused with epandrium. Phallic guide short, subparallel-sided in ventral view; nearly straight in lateral view. Basal processes of phallus large, surpassing posterior margin of hypandrium. Phallus with two short, pointed projections apically.

Description of male. Body length 6.8 mm. Head ( Fig. 1 View FIGURES 1–5 ). Eyes contiguous for a distance of sixteen facets. F, EM, V = 0.7 mm, 0.5 mm, 0.3 mm. Frontal triangle grey-brown pruinose and face grey pruinose. Postcranium dark, brown pruinose dorsally and grey pruinose laterally and ventrally. Antennae ( Fig. 2 View FIGURES 1–5 ) with scape dark brown; pedicel dark brown, with five dorsal and five ventral bristles; postpedicel dark brown with apex rounded below. LPP/WPP = 1.7. Labellum brownish yellow. Thorax. Postpronotal lobe dark brown, grey-brown pruinose. Scutum and scutellum dark brown to black with brown pruinescence. Notopleuron concolorous with the scutum, mostly grey pruinose. Mesopleuron dark brown to black, grey pruinose; laterotergite grey pruinose; mediotergite black with brown pruinescence medially. Wing ( Fig. 3 View FIGURES 1–5 ). Length 7.6 mm. LW/MWW = 3.8. LTC/LFC = 1.25. Membrane mostly hyaline except by darkened base. Halter with stem light brown and knob dark brown. Legs ( Fig. 1 View FIGURES 1–5 ). All legs dark brown to black, with apices of coxae, trochanters and femora and bases of the tibiae somewhat yellow; femora with grey pruinescence on the posterior face. Pulvilli yellow. Abdomen ( Fig. 4 View FIGURES 1–5 ). Almost as long as wide. Black with brown pruinescence, all tergites with bands of grey pruinescence posteriorly. Tergites 6, 7 and sternites 6 and 7 as in Fig. 6 View FIGURES 6–15 . Syntergosternite 8 mostly brown pruinose; about equal in length to tergite 5 ( Fig. 4 View FIGURES 1–5 ) and with a moderately large membranous area ( Fig. 7 View FIGURES 6–15 ). Terminalia. Epandrium and surstyli dark yellow to light brown ( Figs 8–9 View FIGURES 6–15 ). Surstyli ( Figs 8–9 View FIGURES 6–15 ) symmetrical, subtriangular, not fused with epandrium; when seen in lateral view subequal in width dorsally and ventrally, not projected towards epandrium and not surpassing the margins of epandrium ( Figs 10–11 View FIGURES 6–15 ). Phallic guide ( Figs 12–13, 15 View FIGURES 6–15 ) short, about 1.2× the hypandrium length; subparallel-sided in ventral view ( Fig. 13 View FIGURES 6–15 ); nearly straight in lateral view ( Fig. 15 View FIGURES 6–15 ). Basal processes of phallus large, surpassing posterior margin of hypandrium ( Fig. 12 View FIGURES 6–15 ). Phallus with two sclerotized small and pointed projections apically ( Figs 14–15 View FIGURES 6–15 ). Ejaculatory apodeme as in Fig. 15 View FIGURES 6–15 .

Female. Unknown.

Type material. HOLOTYPE ♂: “ BRASIL, AC [Acre], Rio Branco, [9°58'30.81"S, 67°49'29.67"W], 25–x a 8– xi–91, F. Ramos / A. Henriques, I. Gorayeb / N. Bittencourt ” “Armadilha 20 m Suspensa, Mata T.[erra] firme” “DW0057” “ Holotype ♂, Amazunculus acreanus Marques, Skevington & Rafael   ” ( MPEG) ( Fig. 5 View FIGURES 1–5 ). GoogleMaps  

Holotype condition. Right postpedicel lost. Right wing detached, mounted on microslide. Terminalia placed in a microvial with glycerin.

Etymology. The specific epithet refers to the type locality, Acre state.

Geographical distribution. This species is known only from the type locality, Acre, Brazil ( Fig. 182 View FIGURES 182 ).

Habitat. This new species was collected in the canopy of the Amazon rainforest of the Brazilian state of Acre.


Amherst College, Beneski Museum of Natural History


Museu Paraense Emilio Goeldi