Sabaha maculosa Ponomarenko, M. Omelko et N. Omelko, 2023

Ponomarenko, M. G., Omelko, M. M. & Omelko, N. V., 2023, New species of gelechiid moths of the genus Sabaha M. Omelko et N. Omelko, 2019 (Lepidoptera: Gelechiidae) from Borneo Island, Far Eastern Entomologist 486, pp. 6-24 : 22-23

Sabaha maculosa Ponomarenko, M. Omelko et N. Omelko , sp. n.

https://zoobank.org/NomenclaturalActs/ EA88C0CD-DDAF-4033-BFAA-4CAB085D230B

Figs 22, 23 , 40–43 , 50–52

TYPE MATERIAL. Holotype: ♂, Borneo : E Malaysia, state of Sabah, 24 km N Tawau, 20.VIII 1995, gen. slide 216 MP (M. Omelko leg.). Paratype: 1 ♀, same locality, 21.VIII 1995, gen. slides 217 MP (M. Omelko leg.) .

DIAGNOSIS. New species is similar to S. semiatrata sp. n. in pattern of forewing, but it can be distinguished by beige, not darkened head and thorax. New species is related to S. parda sp. n., S. pilosa sp. n. and S. semiatrata sp. n. by hood-like uncus with lateral more or less conic lobes, culcitula of gnathos with median finger-like projections and aedeagus with dorsal poleaxe-shaped lobe in distal part, but it differs by sacculus with strong narrowing at 3/5 of its total length and by aedeagus curved at a right angle in the male genitalia. New species is very similar to S. cheemai in morphology of the female genitalia, but it can be distinguished by shorter ovipositor, apophyses posteriores 6 times longer than apophyses anteriores, whereas in related species this ratio is 9,5.

DESCRIPTION. Adult ( Figs 22, 23 ). Forewing length 5.7–6.5 mm. Head beige interspersed with scales darker beige in distal part. Eyes surrounded elongated beige scales with brown distal part. Scapus beige with brownish shading, wider and with elongated black scales along posterior margin in male; flagellum brown basally and with alternate brown (beige in female) and brownish segments, basal segments widened in male.

First segment of labial palpus beige with brownish shading or blackish; second segment wide, ventrally with brush of scales brownish or blackish-brown basally and light beige or beige distally, and with indistinct brownish fascia before apex; third segment wider and shorter in male, beige with brownish darkening, with small tuft of blackish-brown scales with white apex on upper margin in distal part. Patagia covered by beige scales with brown distal part. Thorax, tegulae and forewing groundcolour dark beige in male and beige in female with intense brownish darkening. Pattern of forewing consisting of small brownish and brown spots and tufts of raised scales. Fringe in male with brownish scales with a beige apex on costal margin, greyish brown on outer margin, brown on dorsal margin; and in female with beige and brownish scales with white apex on costal margin, blackish with white apex on outer margin, smoky with white apex on posterior margin. Hindwing brown with dark grey fringe. Legs beige with brownish shading in male and blackish-brown in female; brush on the tibiae of hind legs beige.

In male the two androconial bundles of long hair-like and oval scales placed in the deep lateral pockets on the 2nd abdominal sternite ( Fig. 43 ).

Male genitalia ( Figs 40–42 ). Uncus hood-like, with narrow lateral processes slightly curved dorsally. Culcitula of gnathos broadly ovoid with deep median constriction dividing it into two parts with a narrow finger-shaped processes directed caudally. Median sclerite of gnathos teardrop-shaped in lateral view. Cucullus with relatively narrow neck equal to half its length and lanceolate distal part with an elongated whip-like apical part, tooth-like ledge on ventral edge and rounded cut beyond it. Sacculus smoothly narrowed towards distinct interception at 2/3 of its length and with curved distal third dilated at the middle and narrowed to hook-shaped apex. Aedeagus tubular, curved at right angle at the middle, with two basal semi-oval processes and with a poleaxe-like lobe in distal half bearing a spinous process, and with lanceolate lobe at the apex. Juxta with triangular lobes. Viculum narrowing laterally with broadly rounded saccus.

Female genitalia ( Figs 50–52 ). Ovipositor long, papillae anales oblong, apophyses posteriores 6 times longer than apophyses anteriores. Membranous fold covered anterior part of 8th segment with very narrow area of honeycomb-like sculpture. Vaginal sinus slightly sclerotized. Antrum asymmetric, slightly longer than half length of apophyses anteriores, with longitudinal sclerotization on convex left side; rest part of ductus smoothly dilated towards corpus bursae and inseparable from latter. Corpus bursae membranous and narrow, slightly widened towards bottom. Signum small, oval, with a spinous sculpture and a rounded notch in the middle.

DISTRIBUTION. Sabah, East Malaysia.

ETYMOLOGY. The species name is derived from the Latin word maculosus, meaning spotted, which is corresponding to the pattern of forewing in new species.

Figures

Figs 20–23. Sabaha spp., adults. 20, 21 – S. pilosa sp. n.: 20 – male, holotype; 21 – fragment of forewing. 22, 23 – S. maculosa sp. n.: 22 – male, holotype; 23 – female, paratype. Scale bar on holotype photos 1 mm.

Figs 36–43. Sabaha spp., male genitalia, basal abdominal segments. 36–39 – S. semiatrata sp. n., holotype: 36 – ventral view; 37 – aedeagus, lateral view; 38 – sacculi, lateral view; 39 – uncus, gnathos and culcitula, lateral view. 40–43 – S. maculosa sp. n., holotype: 40 – ventral view; 41 – aedeagus, lateral view; 42 – uncus, gnathos and culcitula, lateral view; 43 – 1st and 2nd tergites and 2nd sternite. Scale bar 0.5 mm.

Figs 44–52. Sabaha spp., female genitalia, 7th abdominal segment. 44–46 – S. parda sp. n., paratype: 44 – ventral view; 45 – 8th sternite; 46 – signum. 47–49 – S. insolita sp. n., holotype: 47 – ventral view; 48 – fragment of inner side of bulla seminalis with small spines; 49 – 7th sternite. 50–52 – S. maculosa sp. n., paratype: 50 – anterior part of 8th sternite, antrum and proximal part of ductus bursae; 51 – corpus bursae; 52 – signum. Scale bar 0.5 mm. 19