Stylogaster ranomafanensis, 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 : 328-331

publication ID	https://doi.org/ 10.5733/afin.053.0118
persistent identifier	https://treatment.plazi.org/id/B906C41A-810D-FF97-CEB8-FE26E67BFBDC
treatment provided by	Felipe
scientific name	Stylogaster ranomafanensis
status	sp. nov.

Treatment

Stylogaster ranomafanensis View in CoL sp. n.

Figs 211–222 View Figs 211–216 View Figs 217–222

Etymology: The species is named after the locus typicus, Ranomafana National Park in Madagascar.

Diagnosis: The conspicuous black margin on the dorsal inner surface of the cercus and the long tooth with two pairs of black spines ( Figs 219, 220 View Figs 217–222 ) distinguish S. ranomafanensis sp. n. from all other known Afrotropical Stylogaster spp. Stylogaster spinicercus sp. n. has an additional black spine on the cercus that is not present on the cercus of S. ranomafanensis sp. n. Without dissection of the terminalia S. ranomafanensis sp. n. may be confused with S. clementsi sp. n. Both species belong to a group of Stylogaster spp. with dark markings on the abdomen and long setulae on the mid femur, but no long setulae on the hind femur; both share the light orange-brown mesoscutum.

Description (based on holotype):

Male.

Overall length: ca 7.0 mm.

Head: 1.4 mm high. Eye brown, with a few scattered inconspicuous ommatrichia. Facets on inner side slightly enlarged. Ocelli pale yellow-brown. Ocellar tubercle brown, with 1 pair of ocellar setae. Ocellar triangle occupies virtually entire frons, reaching as far as antennae ( Fig. 215 View Figs 211–216 ). Ocellar triangle brown. Frons brown lateral to ocellar triangle, with 2–4 proclinate, fronto-orbital setae. Scapus and pedicellus yellow-brown, basal flagellomere brown. Arista dark brown, 3 segments evident, situated dorsally on basal flagellomere ( Fig. 214 View Figs 211–216 ). Scapus with a few brown setulae dorsally. Pedicellus with black setulae. Shape of antenna as illustrated in Fig. 214 View Figs 211–216 . One distinct black vertical seta (1 damaged). Face pale yellow with silver pruinosity. Occiput black, distinctly silver pruinose; with row of regularly-arranged small white setulae dorsally, and several longer white setulae ventrally. Some long white setulae on mouth opening. Proboscis mainly brown, except for white distal division of labellum. Labrum ca 3.0 mm, labellum approximately same length.

Thorax:Yellow-brown, mesoscutum (with exception of postpronotum and postalar calli), scutellum and mediotergite pale brown. All setae black with exception of golden seta on the propleuron. Two notopleural setae, 1 supra-alar seta (both damaged), 2 postalar setae (3 damaged), 1 praescutellar dorsocentral seta (1 damaged), 1 apical scutellar seta (both damaged), 1 seta on anepimeron and 1 seta above fore coxa on propleuron.A few black setulae on anepimeron. Black semi-adpressed setulae on mesoscutum.

Wing: Length 5.4 mm. Generally clothed in microtrichia, but bc, most of c, bases of r 1 and r 2+3, most of br, bm, base of dm, cup and base of anal lobe virtually without microtrichia. Hind margin of wing with pale brown setulae. Venation as in Fig. 216 View Figs 211–216 . Haltere uniformly pale yellow, knob brown, with areas of sensillae at base.

Legs: Whitish yellow, hind femur brown dorsally at apex and dorsally at base, with lighter area in-between. Legs with black and white setulae, setae on coxae white with exception of few black setae on hind coxa. Fore and mid coxae with 2 long yellow seta and some shorter setulae. Hind coxa on inner surface with group of black distal setae and no strong seta on outer surface. Hind trochanter without teeth or conspicuous setulae. Mid femur posteriorly with a row of regularly-arranged black setulae in basal half and black and white setulae ventrally longer than diameter of mid tibia. Hind tibia with 3 short black spines on anterior surface. Claws brown basally, black distally. Pulvilli brown. Empodia short, brown.

Abdomen: Yellow-brown, with tergite 1 mainly brown, tergites 2–5 with brown posterior margin (barely visible in macerated abdomen), tergite 6 with broad brown median fascia, epandrium without brown markings ( Fig. 212 View Figs 211–216 ). Tergites with semiadpressed black setulae, and longer setulae laterally on tergite 5. Tergite 1 with long white setulae laterally, tergite 2 with 0–4 lateral black setae on anterior margin and 3–5 long white setae on either side. Terminalia as illustrated in Figs 217–222 View Figs 217–222 . Cercus broadened distally ( Figs 217, 219 View Figs 217–222 ). Dorsal margin concave. Cercus with long tooth, 2 black spines distally and conspicuous black margin on dorsal inner surface of cercus ( Fig. 219 View Figs 217–222 ). Surstylus with two pale brown teeth distally. A few setulae on inner surface. Phallus sheath as illustrated in Fig. 221 View Figs 217–222 . Few long brown setulae on inner surface.

Female. Unknown.

Holotype: ♂ MADAGASCAR: (1) “ Madagascar, Fianarantsoa Prov., 17 km / W Ranomafana Vohiparara, / Ranomafana Natl Park , malaise in / rainforest, 22.29. IV.2002, / 1110m, R Harin’Hala, ME Irwin, / 21°13. 57’S. 47°22. 19’E. MG 9A26”; (2) “ Holotypus / Stylogaster / ranomafanensis ♂ / des. Stuke, 2011” ( CAS). Right hind tarsi and several setae damaged. Left wing damaged placed in glycerine. 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 from moderately high elevation (1110 m) in primary rainforest.