Gauromydas autuorii (d’Andretta), d'Andretta

Calhau, Julia, Lamas, Carlos José Einicker & Nihei, Silvio Shigueo, 2015, Review of the Gauromydas giant flies (Insecta, Diptera, Mydidae), with descriptions of two new species from Central and South America, Zootaxa 4048 (3), pp. 392-411 : 400

Gauromydas autuorii (d’Andretta)

( Figs 1 B, G, 5H, 6)

Mydas autuorii d’Andretta, 1951: 32 , figs 24, 31, 104, 116, 135, 152. Type-locality: Argentina, Misiones. Papavero & Wilcox, 1968: 7 (cat). Holotype ♂, USNM.

Gauromydas autuorii: Wilcox et al., 1989: 105 (n. comb.); Papavero & Artigas, 1990: 122 (cat.); Papavero, 2009: 11 (cat.).

Diagnosis. Antenna slightly longer than head width; postpedicel mostly black; proximal portion of postpedicel reddish and about as long as distal portion ( d’Andretta 1951). Scutum velvety-black with four discrete white pruinose stripes. Male hind femur 1.6 times wider than hind tibia. Hind tibia with well-developed ventral keel and apical spur. Hind tarsomere 1 2.6 times longer than wide, and 1.7 times longer than tarsomere 5. Wing membrane opaque orange basally, yellow transparent apically; alula higher than wide. T1 and T4 black, remaining tergites and sternites with strong metallic blue. T1 golden setulose, remaining with black setulae. Epandrial lamellae trapezoidal; external posterior extremity acute, but not prolonged as a spine ( d’Andretta 1951, fig. 103); phallus with distinct dorsal crest but with inconspicuous lateral projections ( d’Andretta 1951, fig. 152). Female S10 poorly sclerotized medially; sclerite at base of spermathecal ducts narrower than cerci ( Fig. 4 H). Length: 23–25 mm.

Distribution ( Fig. 6 , Table 1). Argentina (Misiones), Brazil (Mato Grosso do Sul).

Type material examined. HOLOTYPE ♂. ARGENTINA. Misiones, xi.1927, Parker col. ( USNM). PARATYPE. BRAZIL. Mato Grosso do Sul: Maracaju (1 ♀, MZUSP).

Figures

FIGURE 4. Male terminalia of Gauromydas. A – C: Gauromydas mateus sp. nov. (holotype, MNHN). D – F: Gauromydas mystaceus (MPEG). G – I: Gauromydas papaveroi sp nov. (holotype, MZUSP). A, D, G: epandrium and proctiger, dorsal view; B, E, H: gonocoxite-hypandrial complex and associate structures, dorsal view; C, F, I: gonocoxite-hypandrial complex and associate structures, lateral view; J, Gauromydas heros, phallus and associate structures, lateral view. Abbreviations: lph: phallic lateral projection; ph: phallus; phc: phallic crest; gxd: dorsal prolongation of the gonocoxite-hypandrial complex (Calhau et al. 2014). Scale bars: 0.5 mm.

FIGURE 6. Distribution map for the species of Gauromydas.

FIGURE 1. A, Gauromydas apicalis, dorsal habitus (female, MZUSP); B, Gauromydas autuorii, dorsal habitus (male holotype, USNM); C, Gauromydas heros, dorsal habitus (male, MZUSP); D, Gauromydas mystaceus, dorsal habitus (male, MZUSP); E, Protomydas coerulescens (Olivier), hind tibia and tarsomere 1 (male, MZUSP); F, Gauromydas apicalis, hind leg (male, MZUSP); G, Gauromydas autuorii, hind leg (male holotype, USNM); H, Gauromydas heros, hind leg (male, MZUSP).