Dexosarcophaga itaqua Dodge, 1966

Mello-Patiu, Cátia Antunes De, 2002, Revision of some Dexosarcophaga species described by R. Dodge (Diptera: Sarcophagidae), Zootaxa 122, pp. 1-16 : 2-4

Dexosarcophaga itaqua Dodge, 1966 ( Figs. 1­8 )

Dexosarcophaga itaqua Dodge, 1966: 681 . Type locality: Brazil, São Paulo, Itaquaquecetuba; male holotype, USNM.

Male – Total length = 6 mm.

Head – Fronto­orbital and parafacial plates gray with golden microtomentum, with a row of black setulae along eye margin; frontal vitta dark brown; frons 0.22 X head width; frontal row of 9 bristles; 1 reclinate fronto­orbital bristle, proclinate absent; outer vertical bristle not differentiated from the postocular setae; gena and postgena gray with black setae; antenna dark brown [first flagellomere lost in the holotype], palpus dark brown with black apex.

Thorax – Gray, postpronotal lobe with golden microtomentum. Proepimeron bare; prosternum with sparse setae. Chaetotaxy: acrostichals 3 (weakly differentiated) + 1, dorsocentrals 3 + 4 (two posterior longer), intra­alars 1 + 2, supra­alars 2 + 3, postpronotals 3, postalars 2, notopleurals 4, scutellum with 2 marginals bristles intercalated by 2 weak ones, apical absent, discals 1, meropleurals 6, katepisternals 3 (in a line). Wing hyaline, R1 bare, R4+5 setulose in basal 2/3 to crossvein r­m, costal spine not differentiated, third costal sector without ventral setulae. Legs black, mid femur apically with posteroventral ctenidium (6­7 spines), mid tibia with 1 median postero­dorsal bristle, without ventral setae, hind tibia with 1 antero­ventral median setae.

Abdomen – Black with the usual pattern of silvery gray microtomentum; T1+2–3 without median marginal bristle, T4 with a row of marginal bristles; ST1­2 with long black hair­like setae.

Terminalia – Syntergosternite 7+8, epandrium and cercus black with sparse gray microtomentum; epandrium with some differentiated dorsal bristles and syntergosternite 7+8 with 3 pairs of bristles in the row of marginals ( Fig. 1 ); cercus moderately curved forwards in profile ( Figs. 1­2 ); surstylus clavate with elongated apical setae ( Fig. 1 ); gonopod with slightly enlarged base ( Figs. 3, 4 ) and paramere gently curved and with a strong median bristle on anterior margin ( Figs. 3, 5 ); phallus with a distinct basiphallus and a deep concavity between the apex of distiphallus and juxta ( Figs. 3, 6 ); juxta narrow, protecting the apices of lateral styli ( Figs. 3, 6, 7 ); lateral stylus long with simple base and dentate apex ( Figs. 6, 7 ); median stylus represented by a small, double, rugose lobe between the apices of the lateral styli ( Figs. 6, 7 ); vesica well sclerotized, bearing a pair of median apophyses laterally, bifurcated at apical portion with divergent arms ( Figs. 6, 8 ).

Female – unknown.

Material examined – Brazil. São Paulo: Itaquaquecetuba, 1 male (holotype), V. 1929, Townsend ( USNM).

Distribution – NEOTROPICAL – Brazil (São Paulo).

Remarks – This species is very similar to D. transita and D. lopesi , but can be distinguished specifically by the presence of median apophyses and divergent broad apical arms in the vesica ( Fig.8 ). The ST5 was not dissected due to the fragility of the holotype.

Figures

FIGURES 1 ­ 8. – Dexosarcophaga itaqua Dodge, male holotype; 1. syntergosternite 7 + 8, epandrium and cercus, lateral view; 2. apex of cercus, lateral view; 3. phallus and associated structures, lateral view; 4. gonopod; 5. paramere; 6. apex of phallus, lateral view; 7. apex of phallus without vesica, ventral view; 8. vesica, ventral view (bp = basiphallus; dp = distiphallus; go = gonopod; ju = juxta; ls = lateral stylus; ms = median stylus; pa = paramere; ve = vesica).