Stylogaster pseudofanjae, Stuke, 2012

Stuke, Jens-Hermann, 2012, A revision of Afrotropical species of Stylogaster Macquart (Diptera: Conopidae), with descriptions of twenty-one new species and an identification key, African Invertebrates 53 (1), pp. 267-267 : 325-328

publication ID	https://doi.org/ 10.5733/afin.053.0118
persistent identifier	https://treatment.plazi.org/id/B906C41A-810A-FFEA-CECE-FCE3E677FE35
treatment provided by	Felipe
scientific name	Stylogaster pseudofanjae
status	sp. nov.

Treatment

Stylogaster pseudofanjae View in CoL sp. n.

Figs 200–210 View Figs 200–204 View Figs 205–210

Etymology: The species name refers to the similarity between S. fanjae sp. n.; both species were collected in the same locality on the same date.

Diagnosis: Stylogaster pseudofanjae sp. n. belongs to a group of similar species occurring on Madagascar, having a black mesoscutum ( Fig. 200 View Figs 200–204 ), a dark brown abdomen ( Fig. 201 View Figs 200–204 ) and no additional setulae on the mid femur. The three species in this group ( S. camrasi , S. fanjae sp. n. and S. pseudofanjae sp. n.) can be easily distinguished by characters of the male terminalia. Stylogaster pseudofanjae sp. n. has two black teeth on the distal margin of the surstylus ( Figs 205, 207 View Figs 205–210 ), no black setae at the base of the phallus sheath ( Fig. 208 View Figs 205–210 ), strong black setulae on the cercus, and a diagnostic shape of the surstylus. It is very similar to S. fanjae sp. n., but the surstylus is differently shaped, especially in the ventral view ( Fig. 68 View Figs 66–71 ). Also, S. pseudofanjae sp. n. has no dense black setulae on the ventral surface of the mid tibia as does S. fanjae sp. n. ( Fig. 65 View Figs 60–65 ).

Description (based on holotype):

Male.

Overall length: ca 4.6 mm.

Head: 1.0 mm high. Eye dark brown, with a few scattered inconspicuous ommatrichia. Facets on inner side slightly enlarged. Ocelli orangebrown. Ocellar tubercle blackish brown, with 1 pair of damaged ocellar setae. Ocellar triangle occupies virtually entire frons, reaching as far as antennae ( Fig. 204 View Figs 200–204 ). Ocellar triangle brown. Frons black lateral to the ocellar triangle, with only 2 small, defined, frontoorbital setae. Antenna dark brown. Arista dark brown, 3 segments evident. Arista situated dorsally at apex of basal flagellomere ( Fig. 202 View Figs 200–204 ). Scapus with a few orangebrown setulae dorsally. Pedicellus with black setulae. Shape of antenna as illustrated in Fig. 202 View Figs 200–204 . One distinct black vertical seta. Face pale yellow with silver pruinosity. Occiput black to brown, distinctly silver pruinose; with a row of regularly-arranged small white setulae dorsally, and several longer white setulae ventrally. Some long white setulae on mouth opening. Proboscis pale yellow basally, becoming dark brown distally, except for yellow-brown distal division of labellum. Labrum ca 2.0 mm, labellum approximately same length.

Thorax: Yellow-brown; mesoscutum (with exception of postpronotum), scutellum, mediotergite and laterotergite dark brown, anepisternum and katepisternum pale brown. All undamaged setae on holotype black (dorsocentral seta and seta on anepimeron missing, all other setae intact on one side of specimen), with exception of golden seta on propleuron. Two notopleural setae, 1 supra-alar seta, 2 postalar setae, 1 praescutellar dorsocentral seta, 1 apical scutellar seta, 1 seta on anepimeron and 1 seta above fore coxa on propleuron. Black semi-adpressed setulae on mesoscutum.

Wing: Length 3.7 mm. Generally clothed in microtrichia, but base of r 1 and very narrowly at base of r 2+3, most of br, bm, base of dm, base of anal lobe, base of cup and cua 1 without microtrichia. Hind margin of wing with black or brown setulae. Venation as in Fig. 203 View Figs 200–204 . Haltere uniformly pale brown, with areas of sensillae at base.

Legs: Fore and mid legs yellowbrown. Hind leg darker with paler ventral surface and medial part of hind femur. Legs mainly with black or brown setulae and black setae, only fore and mid tibiae additionally with pale yellow setulae. Fore and mid coxae without distinct setae, but with strong black setulae distally. Hind coxa without lateral black setulae, but with strong black setulae distally on anterior surface. Hind trochanter without teeth or dense setulae. Mid femur with a row of regularly-arranged black setulae on basal half posteriorly. Hind tibia with 1 short black spine on anterior surface. Claws dark brown basally, black distally. Pulvilli pale yellow. Empodia short, brown.

Abdomen: Mainly dark brown, tergites 2–4 paler brown laterally in basal two-thirds. Epandrium narrowly yellow laterally at base ( Fig. 201 View Figs 200–204 ). Tergites with semiadpressed black setulae.Tergite 1 with long white setulae laterally, tergite 2 on anterior margin with 4–6 black lateral setae on either side. Terminalia as illustrated in Figs 205–210 View Figs 205–210 . Cercus elongated ( Fig. 209 View Figs 205–210 ). Dorsal margin slightly concave. Cercus without lappet ventrally. No conspicuous teeth ventrally. Some dorsal setulae stronger than surrounding setulae. Surstylus with 2 black teeth on distal margin. No setulae on inner surface. Phallus sheath as illustrated in Fig. 208 View Figs 205–210 .

Female. Unknown.

Holotype: ♂ MADAGASCAR: (1) “ Madagascar / Province Fianarantsoa / Parc National Ranomafana / radio tower at forest edge / elev 1130 m / 27. June12. July 2005 ”; (2) “ 21°15.05'S 47°24.43'E / coll. M. Irwin, R. Harin’Hala / coll. California Acad. of Science / malaise, mixed tropical forest / MA0209B118”; (3) “ Holotypus / Stylogaster / pseudofanjae ♂ / des. Stuke, 2011” ( CAS). Left wing, right hind tarsi and several setae damaged. Abdomen dissected, macerated and deposited in glycerine in a microvial pinned beneath specimen, holotype otherwise in good condition. GoogleMaps

Distribution: Endemic to Madagascar.

Bionomics: Sampled in primary rainforest at moderately high elevation (1130 m).