Stylogaster planitarsis, Rocha, Leonardo Silvestre Gomes & Mello-Patiu, Cátia Antunes De, 2012

Rocha, Leonardo Silvestre Gomes & Mello-Patiu, Cátia Antunes De, 2012, Stylogaster Macquart, 1835 (Diptera: Conopidae) from Northeastern Brazil: new records and two new species, Zootaxa 3590, pp. 23-36 : 30-34

Stylogaster planitarsis sp. nov.

(Figs 18–32)

Diagnosis— Facial keel subtriangular; ocellar tubercle prominent; mid trochanter with a set of long black setae; mid tarsomeres 2 to 4 flattened and covered with dense black setae; male with sternite 5 with sclerotized posterior margin and laterally grouped setae, bilobate pregonite, and sperm duct longer than the whole abdomen; female with lateral lobes of sternite 8 curved and crossing at the apex.

Male Description Head —Frons brown; facial keel with subtriangular shape (Fig. 18); facial keel, orbit and gena with silver microtomentum; ocellar triangle yellowish; apex of ocellar triangle rounded, reaching the lunule; ocellar tubercle brown and prominent; head setae are:1 vertical; 1 ocellar; 2 differentiated occipital; 2 frontal; 4 orbital (Fig. 19); occipital and genal setae white; prementum black with yellow filiform labella; scape and pedicel yellow; postpedicel light brown; scape with tiny setulae on the superior apical margin; pedicel with setulae on the apical two thirds; pedicel and postpedicel of subequal size; arista with enlarged base (Fig. 18). Thorax —Postpronotum and notopleuron well distinct from the thorax (Fig. 20); pleural sclerites yellow, except the brown katepisternum and anepisternum; anepisternum thick; scutum brown; postalar callus and scutellum narrow; postscutellum similar in size to scutellum; 1 white proepisternal seta; all other setae are black: 1 postpronotal, 1 notopleural, 2 supra-alar, 2 postalar, 1 dorsocentral, 1 scutellar and 1 anepimeral seta; fore and mid legs yellow; fore and mid coxae with long white setae; fore femur flattened; white setulae in fore and mid tibiae, and in the two basal tarsomeres of fore and mid legs; mid trochanter with a dense set of long black setae (Fig. 21); mid tibiae with PLATE 5. Stylogaster planitarsis Rocha & Mello-Patiu sp. nov., male. Fig. 18: head, left lateral view. Fig. 19: head, dorsal view. Fig. 20: thorax, dorsal view. Fig. 21: mid trochanter, left lateral view; Fig. 22: mid tarsus, left lateral view.

PLATE 6. Stylogaster planitarsis Rocha & Mello-Patiu sp. nov., male. Fig. 23: wing, dorsal view; Fig. 24: fifth sternite, ventral view. Fig. 25: terminalia, left lateral view. Fig. 26: ejaculatory apodeme, left lateral view; Fig. 27: terminalia, left lateral view [ce: cercus; ph: phallus; ej apd: ejaculatory apodeme; sp dct: sperm duct; hpd: hypandrium; epd: epandrium; pgt: pregonite; su: posterior surstylus; stg: syntergosternite].

PLATE 7. Stylogaster planitarsis Rocha & Mello-Patiu sp. nov., female. Fig. 28: “ovipositor”, left lateral view. Fig. 29: terminalia, left lateral view. Fig. 30: terminalia, dorsal view. Fig. 31: terminalia, ventral view. Fig. 32: egg, left laterodorsal view [ce: cercus; ll: lateral lobes of sternite 8; hyp: hypoproct; st: sternite; T: tergite].

two white spurs; mid basitarsus with a row of differentiated white setae; mid tarsomeres 2–4 flattened and densely covered with black setae (Fig. 22); hind leg brown, with an apical, a median, and a basal yellow strip on the femur and a median yellow strip on the tibia; hind coxa with black setae; hind femur with long black setae on the basal third; hind tibia with a black spur; halter brown with basally enlarged stem, oval and elongated knob; wing with a basal seta; crossvein between Sc and R1 apparent; cell bm straight; R4+5 and M1+2 veins joining away from the costa (Fig. 23). Abdomen —Abdominal tergites brown, with laterobasal faces yellow; tergite 1 with white setae on the sides; tergite 2 with a set of differentiated setae; tergites 3–4 subequal; tergite 5 elongated. Terminalia —Terminalia mainly yellow; sternite 5 with sclerotized posterior margin, a central indentation, and laterally grouped setulae (Fig. 24); syntergosternite 7+8 nearly of the same width of the epandrium, with two pairs of apparent spiracles (Fig. 25); cercus narrower than the posterior surstylus, without hooked apex (Fig. 25, ce); posterior surstylus with black setae on the base and white setae on the anterior lobe; anterior lobe of the posterior surstylus with spines on the internal face; posterior lobe of the posterior surstylus smooth and racket-shaped (Fig. 25, su); pregonite bilobate like the posterior surstylus, reaching the distiphallus, with spines on the internal face of the posterior lobe (Fig. 25, pgt); basiphallus membranous; distiphallus piriform and slightly sclerotized with an oval opening and two filamentous projections (Fig. 25, ph); ejaculatory apodeme smaller than the sperm pump (Fig. 26); sperm duct extremely long, longer than the whole abdomen (Fig. 27).

Female Description. Differs from the male by having: Two pairs of notopleural setae; fore and mid coxae with black setae; one mid tibial spur; mid leg without any modifications; hind leg without differentiated setae; “ovipositor” longer than the abdomen (Fig. 28); segments VI and VII brown; sternite 8 with a basal white mark (Figs. 29–31); tergites 6 and 7 with dorsal and lateral setae over all extension (Fig. 28); dorsal face of the sternite 8 with a pair of reclinate apical setae (Fig. 30) and ventral face with two pairs of proclinate preapical setae (Fig. 31); ventral apex of syntergosternite 8+9 with a “W” shaped indentation (Fig. 31); lateral lobes of sternite 8 wider than the cercus, with curved crossing apices (Fig. 31, eg); cercus of about one third the length of the lateral lobes (Fig. 30, ce); hypoproct elongated and narrow.

Egg Description. Elongated chorion; two pairs of recurrent spines; spines weakly sclerotized and far from each other (Fig. 32).

Etymology. The species name is a reference to the remarkable morphological feature of the mid tarsus, flattened and setose.

Distribution. Brazil: Bahia, Pernambuco.

Type Material. HOLOTYPE—BRAZIL, Pernambuco, Caruaru, 3, VII-1972, J. Lima leg. ( MNRJ). PARATYPES—BRAZIL, Bahia, Nova Conquista, 3Ƥ, XII-1969, F.M. Oliveira leg. ( MNRJ); 233, with same data as holotype ( MNRJ).