Olethreutes magadana ( Falkovitsh 1965 )

Dubatolov, Vladimir V., Bogunova, Anna A. & Nedoshivina, Svetlana V., 2014, Review of the Olethreutes bowmanana-magadana species group, with the description of a new species from the Amur River, Russia (Lepidoptera, Tortricidae), Zootaxa 3779 (3), pp. 375-382 : 378-379

Olethreutes magadana ( Falkovitsh 1965)

( Fig. 3 )

Selenodes magadana Falkovitsh, 1965 , Entomologicheskoe Obozrenie 44 (2): 422–423 (Type locality: Russia, 160 km SE from Magadan, settl. Madaun [Holotype: ZISP]).

Material examined. 1 ♂ (holotype), micr. prep. No. 310, [ Russia], 160 km SE from Magadan, settl. Madaun, 18.vii.1964, Tsvetaev leg. [coll. ZISP].

Remarks. Descriptions of O. magadana and the next species, O. kamtshadala , were originally published in Russian. Redescriptions are given here in English for comparison of all species of the Olethreutes bowmananamagadana species group and to confirm the association of these species with the group.

Description. Forewing length 9 mm. Head: Grayish brown; labial palpi relatively small, slightly broadened distally, covered externally by dark grayish brown scales and internally by whitish scales. Antennae brown, about one-half forewing length. Thorax: Grayish brown. Forewing subquadrangular, costal margin nearly straight, apex rounded; temen slightly oblique, tornus rounded; upperside ground color grayish brown; pattern typical of other members of genus, consisting of transversal light striae and dark fasciae; basal part gray, covered with dispersed darker grayish brown scales forming an oblique transversal marble pattern; median fascia grayish brown, distal margin oblique from middle part of costal margin towards tornal angle, turning acutely to dorsal margin at tornal angle, enclosing an oval grayish spot; costal strigulae dove gray; 6th–8th strigulae containing whitish scales; admixture of whitish scales reaching maximum at discal vein, forming a whitish spot; distal part of forewing concolorous with basal part, but with one broader sinuous grayish brown preterminal fascia. Cilia gray, with well defined blackish marginal line. Hindwing elongate-ovoid, with slightly extended apex, grayish brown; costal margin with elongate basal lobe ca. 0.4 length of costa, its fore margin with elongate specialized androconial scales. Abdomen: Dark gray. Male genitalia ( Fig. 8 ) with uncus slightly narrowed and weakly bifurcate apically, covered with long hairs. Socii separate, laterally fused with tegumen, covered with long hairs. Gnathos membranous. Valva long with broader basal part; cucullus gradually widened apically forming an ovoid club covered by long setae, its apex about three times as broad as neck of valva; neck of valve long, narrow, without setae; sacculus with wide triangular apical process, extended ventrally, narrowing towards costa, densely covered with strong setae; sacculus with a setose cluster near proximal edge of triangular process, ventral edge of process covered with row of hairs; basal side of triangular process with small setose spine cluster. Aedeagus slightly curved, nearly straight, membranous dorsally; sclerotized ventral part of aedeagus forming a narrow apical process, curved clockwise with a strong spine on top. Female genitalia with papillae anales elongate, broader apically (dorsally) and narrow ventrally. Sternite VII forming two leaf-like sclerotizations, one on each side of ostium. Ostium surrounded by two lateral semicircular sclerites. Vaginal sinus sclerotized with transverse narrowing near base. Ductus bursae moderate in length. Corpus bursae ovoid, without signum.

Diagnosis. Olethreutes magadana is most similar to O. pivanica , sp. n., but can be distinguished by the following characters: cucullus ovoid, slightly elongate, whereas in O. pivanica the cucullus is wide, rounded; and apical process of the sacculus triangular, broadest ventrally, narrowing towards costa, whereas in O. pivanica the process is broader towards the costa, narrowing ventrally and forming a rounded ventral lobe.

Distribution. Known only from the type series, collected at the upper part of the Kolyma river basin.

Figures

FIGURES 1 – 6. Olethreutes spp., adults. 1 – 2. O. bowmanana. 1, holotype, male, CANADA, Alta., Nordegg; 2, holotype labels. 3, O. magadana, holotype, male RUSSIA, 160 km SE from Magadan, settl. Madaun. 4, O. kamtshadala, holotype, male, RUSSIA, Koryakia autonomous region, Apuka, Pakhachinsky Range. 5 - 6, O. pivanica. 5, holotype, male, RUSSIA, Khabarovsk Province, near Komsomolsk-na-Amure, Pivan; 6, paratype, female, the same locality.

FIGURES 7 – 10. Olethreutes spp., male genitalia, holotypes. 7, O. kamtshadala, Russia, Kamchatka; 8, O. magadana, Russia, Magadan Province; 9, O. bowmanana, Canada, Alberta; 10, O. pivanica, Russia, Khabarovsk Province.