Panau lourensi, Yakovlev & Hulsbosch, 2023

Yakovlev, R. V. & Hulsbosch, R., 2023, Two new species of the genus Panau (Lepidoptera: Cossidae) from the Philippines and Indonesia, with the redescription of Panau variegatum, Zoosystematica Rossica (Zoosyst. Rossica) 32 (1), pp. 3-7 : 4-6

Panau lourensi sp. nov.

( Figs 3–4 )

Holotype. Male , with labels: “the Philippines N. Luzon / 5 km S Adams / 350 m 6−7 Apr. 2008, N 18°31.338′ E 120°55.690′ / J H Lourens”, “Genitalpräparat / Heterocera / Nr. 25.300 / Museum Witt, Münhen”, “HOLOTYPUS / Panau lourensi / Yakovlev & Hulsbosch, 2023 / Yakovlev & Hulsbosch des., 2022” ( MWM).

Paratypes. 3 males, with same locality and date as for holotype ( MWM) ; 1 male, Philippines, Occidental Mindoro, Banban Mts , “Bulalacao Brgy Nicolai” [Bulalacao municipality, (?) Nicolai barangay (= district; not located)], 150 m, 12°20′N 121°12′E, 8 Jan. 2005, J.H. Lourens ( MWM) .

Description. Male. Length of forewing: 25.0 mm in holotype, 24.0− 26.5 mm in paratypes. Antenna short, about one-fourth of forewing in length; two-thirds of antenna (basal and middle parts) bipectinate, with long setae (2.5−3.0 times as long as diameter of antenna stem); distal part of antenna unipectinate, with very short setae. Tegulae and patagia densely covered with light grey scales. Abdomen basally light grey, in other parts light brown. Forewing brown; two bright black wide strokes between veins of radial stem postdiscally; thin grey transverse strokes discally; undulated grey strokes postdiscally and submarginally; light brown portion in area of cubital stem discally; fringe dark at veins, light between veins. Hind wing brown, without pattern; fringe dark at veins, light between veins.

Male genitalia. Uncus long, with acute beak-like apex and deep longitudinal notch on lower surface. Gnathos arms thin, long, belt-like, not fused. Valve long, leaf-like, slightly curved along all length, slightly narrowing to apex; outer margin semicircular; costal margin slightly curved; abdominal margin with two small notches in proximal and middle thirds. Juxta saddle-like, robust, with a pair of long leaf-like lateral processes. Saccus small, conical, apically acute. Phallus thick, with longitudinal folding along all surface; lateral surface of vesica with large finger-shaped cornutus being twice as small as phallus.

Female unknown.

Comparison. Externally, P. lourensi sp. nov. clearly differs from two other species considered in this article, in the dark pattern with poorly expressed light brown elements and in two small notches on the abdominal margin of the valve in the proximal and middle thirds.

Etymology. The new species is named in honour of the collector, J.H.M. Lourens. Dr Johannes H.M. Lourens has made a significant contribution to the study and conservation of Lepidoptera in the Philippines, as well as to the promotion of knowledge about Lepidoptera in this region.

Distribution. The Philippines: Luzon and Mindoro islands.

Figures

Figs 1–6. Panau spp., males (holotypes). 1–2, P. variegatum (Roepke, 1957); 3–4, P. lourensi sp. nov.; 5–6, P. tanimbari sp. nov. Habitus in dorsal view and labels (1); habitus in dorsal view (3, 5); male genitalia in frontal view and aedeagus in lateral view (2, 4, 6). Scale bars (1, 3, 5): 1 mm.