Dracontogena bjornstadi Aarvik & Karisch

Aarvik, Leif, Karisch, Timm & Marthinsen, Gunnhild, 2012, Review of the Afrotropical genus Dracontogena Diakonoff, 1970 (Lepidoptera, Tortricidae) with descriptions of eight new species, Zootaxa 3478, pp. 345-372 : 353

publication ID	https://doi.org/ 10.11646/zootaxa.3478.1.32
publication LSID	lsid:zoobank.org:pub:FC92E481-4FF7-4DD8-B7C9-9F192F373D2E
DOI	https://doi.org/10.5281/zenodo.5697404
persistent identifier	https://treatment.plazi.org/id/03C13418-FFED-FF92-1AE7-FBC5384CF869
treatment provided by	Plazi
scientific name	Dracontogena bjornstadi Aarvik & Karisch
status	sp. nov.

Treatment

Dracontogena bjornstadi Aarvik & Karisch View in CoL , new species

( Figs. 8 View FIGURES 2 – 9 , 26 View FIGURES 23 – 33 , 39, 40 View FIGURES 34 – 40 )

Type material. Holotype, 3, TANZANIA: Bukoba District: Minziro Forest , 1180 m., 8.ii.1991, A. Bjørnstad 24226, genitalia slide L. Aarvik 2733 ( NHMO) .

Description. Adult. Male ( Fig. 8 View FIGURES 2 – 9 ). Head: Blackish brown. Antenna dark brown. Labial palpus 1.5 times diameter of eye, blackish brown, extreme tip white. Thorax: Dark grey, white patch in front, ochreous and white posterior scale tuft; tegulae white, ochreous posteriorly. Legs dark grey, tarsi with paler rings, hind tibia with grey scale tuft. Wingspan 24.0 mm. Forewing upperside brownish black, brown suffusion dominant at dorsum at tornus; connection of white dorsal maculae interrupted; outer white macula with two small dark dots on dorsum. Hindwing dark brownish grey; basal scales modified, narrow, black; termen strongly notched before anal corner; no fringes present along termen from apex to notch.

Male genitalia ( Figs. 39, 40 View FIGURES 34 – 40 ). Valva broad, with moderate scale patch; phallus ( Fig. 40 View FIGURES 34 – 40 ) long, 831 μm., broadest in middle, with ca. 112 small cornuti counted from their attachment sockets. Tergite 8 ( Fig. 26 View FIGURES 23 – 33 ) short, with distinct lateral incisions.

Female unknown.

Diagnosis. D. bjornstadi n. sp. resembles the two other species with a strongly notched hindwing, D. continentalis and D. angolensis n. sp. In the genitalia it differs from D. continentalis by the broader valva and the much higher number of cornuti, as well as the differently shaped 8th tergite. From D. angolensis it differs by the more slender phallus and more numerous cornuti.

Distribution. Known only from Minziro Forest, NW Tanzania.

Biology. The habitat is a seasonally flooded swamp forest typical of the Kagera region of northwest Tanzania. The flora of this forest represents an eastern extension of the “Guineo-Congolian regional centre of endemism” into East Africa ( Bjørnstad 1991).

Etymology. The species is named after the collector of the holotype, Anders Bjørnstad.