Stylogaster seyrigi Séguy, 1932

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 : 339-340

Stylogaster seyrigi Séguy, 1932

Figs 255–259 Stylogaster seyrigi Séguy, 1932: 161 , 162 (Type locality: “ Madagascar: Rogez”). Literature: Séguy (1932), Smith (1967).

Séguy’s (1932) description of S. seyrigi was based on two syntypes (♂ and ♀). Smith (1967) noted that Séguy’s description of the male did not accord with that of the female. Based on examination of photographs of the syntypes, the male is here identified as S. pauliani Camras , bearing the labels: (1) “MUSEUM PARIS / MADAGASCAR / PROV

D’ANALALAVA / MAROMANDIA / R. DECARY 1923” [blue label]; (2) “ Stylogaster / seyrigi ♂. / E. SÉGUY det. 1932” [partly handwritten] ( MNHN). To prevent any future confusion, the female is hereby designated as the lectotype, bearing the labels: (1) “TYPE”; (2) “ Madagascar / Rogez / VI. 30 / A. Seyrig ”; (3) “ Stylogaster ♀ / seyrigi Typ. / E. SÈGUY det 1932” ( MNHN). This designation conforms to the interpretation of S. seyrigi by Smith (1967) .

The assignment of the male reported below as S. seyrigi is justified as follows: males of two species ( S. seyrigi and S. stuckenbergi sp. n.) are very similar, but can be distinguished by colouration of the pleura and characters of the terminalia. The same differences in the colouration of the pleura are found in females with very long and diagnostic terminalia, which is typical for S. seyrigi ( Séguy 1932) . Therefore, those males with black maculae on the pleura are identified as S. seyrigi .

Material examined: MADAGASCAR: Fianarantsoa: 1♂ Parc National Ranomafana , radio tower, at forest edge, 21°15.05'S 47°24.43'E, 1130 m, 15–26.ii.2006, M. Irwin & R. Harin’Hala, Malaise trap ( CAS) .

Distribution: Endemic to Madagascar.

Bionomics: Found in primary rainforest at moderately high elevation (1130–1215 m).

Figures

Figs 255–259. Terminalia (♂) of Stylogaster seyrigi Séguy (Madagascar, Parc National Ranomafana): (255) surstylus, lateral view; (256) surstylus and cerci, dorsolateral view; (257) phallus sheath of hypandrium, lateral view; (258) cercus, lateral view; (259) sperm pump and ejaculatory apodeme. Abbreviations: ce – cercus; su – surstylus. Not to scale.