Biopyrellia Townsend, 1932

Nihei, Silvio Shigueo & Carvalho, Claudio José Barros De, 2009, The Muscini flies of the world (Diptera, Muscidae): identification key and generic diagnoses, Zootaxa 1976, pp. 1-24 : 10

Biopyrellia Townsend, 1932

Biopyrellia Townsend, 1932: 105 . Type species: Musca bipuncta Wiedemann, 1830 .

Diagnosis. Colouration metallic dark-blue; thorax surface with fine pilose punctuation; wing with maculae on humeral vein and on apex of Sc and R1. Male with anterointernal ommatidia strongly enlarged, with same size as anterior ocellum. Vibrissa reduced and inserted above the level of oral margin. Female without proclinate fronto-orbital seta; parafrons weakly setulose on upper half; interfrontal seta absent. Dorsocentrals 0+1. Posthumeral, parahumeral, postsutural intra-alars and intrapostalar seta absent. Prosternum notably narrowed anteriorly and bare ( Fig. 6 ). Katepisternals 0+1. Meron and katepimeron bare. Posterior spiracle bare on posterior margin. Wing with the apical portion of stem-vein setulose ventrally; Rs node setulose dorsally and ventrally; R4+5 bare dorsally and ventrally; M bent forward towards R4+5; some portions of the membrane not covered by microtrichiae. Subcostal sclerite bare. Lower calypter enlarged posteriorly, extending under base of scutellum. Mid tibia with two weak posteroventral setae, one supramedian and another at apical third ( Fig. 16 ). Calcar weak.

Distribution (1 species). Neotropical.

References. Pamplona (1986), de Carvalho and Couri (2002).

Figures

FIGURES 1 – 8. 1. Head, Polietina orbitalis (Stein), female, lateral view. 2. Same, upper frontal view. 3. Head, Polietina major (Albuquerque), male, lateral view. 4. Head, Morellia (Xenomorellia) undescribed sp., female, frontal view. 5. Antenna, Pyrellia albocuprea Villeneuve, inner lateral view. 6. Prosternum, Biopyrellia bipuncta (Wiedemann), anteroventral view. 7. Prosternum, Morellia nigricosta Hough, anteroventral view. 8. Prosternum, Mitroplatia smaragdina (Séguy), anteroventral view. Figures 1 – 2 and 5 after Nihei and de Carvalho (2007 a); Figure 3 after Nihei (2002). Figures 6 – 8 on same scale.

FIGURES 15 – 18. Apex of mid femur and tibia: 15. Pyrellina distinct (Walker), female, posterior view. 16. Biopyrellia bipuncta, male, posterior view. 17. Morellia (Parapyrellia) maculipennis (Macquart), male, anterior view. 18. Morellia podagrica, male, posterior view. Figures 15 – 18 after Nihei and de Carvalho (2007 a). All figures on same scale.