Kalimantanossus kongkeoi, Yakovlev & Prozorov & Prozorova & Müller, 2023

Yakovlev, Roman V., Prozorov, Alexey M., Prozorova, Tatiana A. & Müller, Günter C., 2023, New species of Kalimantanossus Yakovlev, 2011 (Lepidoptera, Cossidae: Cossinae) from Laos with the genus catalogue, Ecologica Montenegrina 69, pp. 154-159 : 155

Kalimantanossus kongkeoi sp. n.

https://zoobank.org/ urn:lsid:zoobank.org:act:7F36A367-702B-4BEF-A803-AD8E77182394

Figs 1 , 6

Type material. Holotype, male, Laos, Xiangkhouang Province, 10 km E Phonsavan , 1130 m, 19.497844 N, 103.294464 E, 14.05– 30.06.2019, leg. T. & A. Prozorovs (coll. Günter Müller, Freising; slide Prozorov 2022-0367).

Description. Male ( Fig. 1 ). Length of fore wing 12 mm. Antenna about half of fore wing in length, bipectinate, setae 2.5−3 times longer than antenna stem diameter. Thorax and abdomen densely covered with brown scales. Fore wing light-creamy with poorly expressed brown pattern: poorly noticeable strokes along costal margin, round spot on wing basally, wide light-brown spot along anal margin of wing, poorly expressed wide oblique light-brown band postdiscally, series of tiny light-brown strokes submarginally, border very thin, brown, fringe mottled (brown at veins, creamy between veins). Hind wing light-brown without pattern, fringe mottled (brown at veins, creamy between veins).

Male genitalia ( Fig. 6 ). Uncus tapered, wide, slightly narrowing to apex, apically semicircular; gnathos arms thick, short; gnathos robust, slightly narrowing in medium third, densely covered with tiny spikes; valve with well developed sacculus, two basal thirds of valve sclerotized, apical third of valve lanceolate, membranous; on costal edge of valve on border between medium and apical thirds – small sclerotized crest with uneven edge; transtilla process long, hook-like, poorly narrowing from basal end to apex, apex acute; juxta scaphoid with thin lamellar lateral processes; saccus well developed, wide, semicircular; phallus slightly shorter than valve, of medium thickness, slightly narrowing from basal end to apex, strongly curved in medium third, vesica aperture in dorso-apical position, about half of phallus in length, vesica without cornuti.

Female unknown.

Diagnosis. The new species clearly differs from K. microgenitalis in the series of characters:

- the poorly developed brown pattern on the fore wing (in K. microgenitalis , the brown portion on costal margin of the fore wing is significantly wider and more contrasting, there are round brown spots on the costal margin of the fore wing, the submarginal reticulated pattern is more pronounced);

- the uncus apically more extended, semicircular (in K. microgenitalis , the uncus is slightly more narrow, sharply narrowing to apex, apically acute);

- the phallus strongly curved in medium third (in K. microgenitalis , the phallus is almost straight).

Etymology. The species is named after Kongkeo Keomalavong (Phonsavan, Laos), great friend and our host in Laos.

Distribution. Central Laos.

Flight period. June.

Catalogue of the Genus

Figures

Figures 1−5. Kalimantanossus, adult males: 1. K. kongkeoi, holotype (coll. G. Müller, Freising); 2. K. microgenitalis, holotype (MWM); 3. K. microgenitalis, Borneo, Trus-Madi (MWM); 4. K. microgenitalis, Borneo, Trus-Madi (MWM); 5. K. microgenitalis in nature, Trus Madi Entomology Camp, Nuluhon Trusmadi Forest Reserve, Keningau District, Sabah, Borneo. Lower montane dipterocarp forest, 1050 m, 5.442964 N / 116.451075 E (photo by Alexey Yakovlev).

Figures 6−7. Male genitalia of Kalimantanossus: 6. K. kongkeo, holotype (slide Prozorov 2022-0367); 6. K. microgenitalis, Borneo, Trus-Madi (MWM; slide Genitalpräparat Heterocera MWM # 33.267). Scale bar = 1 mm.