Polymixis (Lophotyna) pateikkaya, Benedek & Volynkin & Babics & Saldaitis, 2021

Benedek, Balázs, Volynkin, Anton V., Babics, János & Saldaitis, Aidas, 2021, Review of the subgenus Lophotyna Hampson of the genus Polymixis Hübner (Lepidoptera: Noctuidae: Noctuinae), with descriptions of two new species from Myanmar, Zootaxa 4999 (1), pp. 22-40 : 33-34

Polymixis (Lophotyna) pateikkaya sp. nov.

( Figs 9, 10 , 24 , 33 )

Type material. Holotype: male, “ West-Myanmar, Chin State, E Kalemyo, Thaing Gnin village , N23°12.861´, E93°48.478´, 1900 m, 3 11.2015, coll. S. Löffler, leg. J. Stumpf / A. Becher [leg. S. Löffler & S. Naumann, coll. J. Stumpf / A.Becher]”, gen. prep. No.: JB2454 ♂ ( JSL).

Paratype: female, West Myanmar, Chin State, 4 km west Thaing Gnin village, N23°12.102´, E93°48.112´, 2100m, 4–5.xi.2015, coll. S. Löffler, leg. J. Stumpf / A. Becher [leg. S. Löffler & S. Naumann, coll. J. Stumpf / A. Becher], gen. prep. No.: JB2455 ♀ ( JSL) .

Remark. The labels of the holotype and the paratype contain wrong data on the collectors. The specimens were collected in Myanmar by Swen Löffler & Stefan Naumann and subsequently purchased by Johann Stumpf and Armin Becher (Stefan Naumann, pers. comm.).

Diagnosis. Polymixis pateikkaya ( Figs 9, 10 ) is very similar externally to P. khumbuensis ( Figs 11, 12 ), but is distinguished by its somewhat smaller size, the reddish brown tegulae (they are orange in P. khumbuensis ), the lack of a claviform stigma (present in P. khumbuensis ), and the wider posterior section of the medial area of the forewing. The male genital capsule of the new species ( Fig. 24 ) differs from that of P. khumbuensis ( Fig. 25 ) by the narrower juxta, the wider valva with a wider and apically rounded dorsal protrusion (it is narrower and apically pointed in P. khumbuensis ), the less elongate cucullus with a pointed tip directed distally (it is apically wider and rounded, and somewhat curved dorsally in P. khumbuensis ), and the wider clasper. Additionally, the right clavus of P. pateikkaya is wider than that of P. khumbuensis . The vesica of the new species is narrower than in P. khumbuensis . In the female genitalia, the antrum of P. pateikkaya ( Fig. 33 ) is somewhat longer and bearing a medial triangular process ventrally, whereas the antrum of P. khumbuensis ( Fig. 34 ) is very short and having only a medial thickening. Additionally, the signa bursae of the new species are conspicuously less elongate than those of P. khumbuensis .

Description. External morphology of adults. Length of forewing 16 mm in male and 18 mm in female. Antenna filiform, eyes and head large. Collar and thorax pale reddish-brown with sparse admixture of white hair-like scales. Forewing elongate, triangular with acute and slightly projected apex and somewhat crenulate outer margin. Ground colour of forewing vivid orange with dark brown suffusion on veins. Basal and subbasal areas pale orange with fine reddish suffusion. Antemedial line brown, thin, sinuous. Medial area with intense darker, reddish-brown suffusion. Orbicular stigma distinct, rounded, pale orange, with thin brown edge. Reniform stigma large, its proximal section narrow, pale orange; distal section consisting of one smaller and two larger, chalk-white spots. Medial fascia present as dark brown suffusion. Postmedial line thin, brown, curved opposite the cell, dentate on veins. Subterminal line orange brown, diffuse, dentate. Terminal line darker, reddish-brown. Cilia reddish-brown. Hindwing paler than forewing, creamy-yellowish with fine brownish suffusion, Postmedial fascia and discal spot pale, indistinct. Abdomen reddish brown, paler than thorax. Male genitalia ( Fig. 24 ). Uncus elongate and narrow, dorso-ventrally flattened and curved, weakly setose subapically and pointed apically. Tegumen moderately long, with narrow arms. Penicular lobe trapezoid, densely setose. Vinculum longer than tegumen, with strongly prominent sclerotized narrowly U-like saccus somewhat curved dorsally. Juxta deltoidal basally with strongly elongate and narrow apical section. Transtilla strongly elongate and thin. Valva moderately wide, tapered distally. Costa with triangular dorsal protrusion medio-distally and heavily sclerotized digitus. Digiti asymmetric: right one elongate, somewhat dilated and curved subapically and tapered apically, protruding beyond the ventral margin of valva; left digitus shorter and wider, bilobate with triangular, apically rounded and somewhat curved lobes. Cucullus broadly triangular, with pointed and distally directed tip. Clasper strongly dilated distally. Saccus wide, almost trapezoid, with somewhat concave dorsal and outer margins; clavi asymmetrical: right one narrower and apically round, left clavus wider and nearly trapezoid with rounded corners. Aedeagus strongly elongate and narrow, its distal half curved ventrally. Carina elongate and narrow. Vesica short, curved dorsally, membranous, with nearly globular main chamber. Female genitalia ( Fig. 33 ). Papilla analis elliptical, setose. Apophyses strongly elongate, thin but strongly dilated basally, equal in length. Ostium bursae broad. Antrum wide but short, heavily sclerotized, its ventral section with medial trigonal protrusion directed posteriorly; dorsal section of antrum heavily granulated. Ductus bursae elongate and relatively narrow, dorso-ventrally flattened with laterally curved medial section, heavily sclerotized with weakly sclerotized but granulated anterior end. Corpus bursae large, sack-like with four strongly elongate but narrow bandlike longitudinal granulated signa and weakly rugose posterior third. Appendix bursae broadly conical with rounded tip, rugose, positioned postero-laterally.

Distribution. The species is known from north-western Myanmar (Chin State).

Etymology. Pateikkaya is an ancient kingdom in Myanmar presumably located in the Chin Hills.

Figures

FIGURES 9–16. Polymixis spp.: adults. Depositories of the specimens: 9 and 10 in JSL; 11 in NSMT (photo by U. Jinbo); 12–16 in BBT.

FIGURES 24–26. Polymixis spp.: male genitalia. The specimens dissected are deposited in BBT.

FIGURES 30–35. Polymixis spp.: female genitalia. Depositories of the specimens dissected: 30, 33–35 in BBT; 31 in ZFMK (photo by D. Stüning); 32 in HNHM (photo by Zs. Balint & G. Katona).