Macrostomus pictipennis (Bezzi)

Rafael, José Albertino & Marques, Dayse Willkenia A., 2021, Four new species of Macrostomus Wiedemann and a checklist of Empididae s. str (Diptera) from Peru, Zootaxa 4981 (3), pp. 506-530 : 513-514

Macrostomus pictipennis (Bezzi)

( Figs 5A–F )

Rhamphomyia pictipennis Bezzi, 1909: 330 . Type locality: Bolivia, La Paz, Mapiri, San Carlos .

Macrostomus pictipennis ; Rafael & Cumming, 2004: 446; Yang et al., 2007: 145 (cat.); Rafael & Cumming, 2010: 619 (redescr.); Rafael & Marques, 2019: 273, 274 (cit.).

Diagnosis. This species is characterized by male and female with four pairs of dorsocentral setae; wing with brown to black infuscation at level of crossveins r-m and dm-m ( Fig. 5A ). Male. Tergite 8 ( Fig. 5C ) elongated with distal protuberances; epandrium ( Fig. 5C ) slightly swollen with strong posterodorsal lobe longer than anterodorsal lobe; hypandrium ( Fig. 5D ) with slender posterior setae; ejaculatory apodeme trilamellar, dorsal lamella absent; phallus same length as hypandrium.

Female. Pinnate setae dorsally and ventrally on mid femur and a few short pinnate setae on basal fourth of mid tibia ventrally ( Fig. 5E ); hind femur and tibia with pinnate setae dorsally and ventrally ( Fig. 5F ).

Geographical records. Bolivia, Peru.

Material examined. PERU: Cuzco, Quincemil , 13–31.viii.1962, L. Pena, 700 m (1♀ INPA) .

Remarks. This species was originally described on the basis of a single female specimen from La Paz, Bolivia and presently it is in poor condition. It was associated with specimens from Quincemil, Cuzco, Peru by Rafael & Cumming (2010). No male from the type-locality was studied and this is essential to be secure that the Peruvian specimens are conspecific with Bolivian specimens of M. pictipennis .

Figures

FIGURE 5. Macrostomus pictipennis (Bezzi, 1909) from Cuzco, Peru. ♂ (A–D). A. Wing; B. Tergite 8, dorsal view; C. Apex of abdomen, lateral view; D. Hypandrium, lateral view. ♀ (E–F). E. Mid leg, posterior view; F. Hind leg, posterior view. Scale bars, figure A = 1 mm; B–D = 0.2 mm; E–F = 0.5 mm (figures after Rafael & Cumming (2010)).Abbreviations: dm–m—discal medial crossvein; epand, epandrium; r–m—radial–medial crossvein; t, tergite.