Promalactis longiuncata Wang, Kendrick & Sterling, 2009, sp. nov.
Creators: name: Wang, Shuxia
name: Kendrick, Roger C.
name: Sterling, Philip
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Oecophoridae
Promalactis
Promalactis longiuncata

description: Promalactis longiuncata sp. nov.
(Figs. 4, 14, 22)
Labdia sp. A; Kendrick (2003: 51; plate 4, fig 13)
Type material: CHINA: Holotype, 3, KARC, Hong Kong, 200 m, 26.iii.1997, leg. R. C. Kendrick, genitalia slide No. W006103. Paratypes: 1 Ƥ, same data as for holotype except dated 11.vii.1997; 1 3, KFBG Butterfly Garden, Hong Kong, 340 m, at mv light, 7.x.2001, leg. M. J. Sterling & R. C. Kendrick, coll. M. J. Sterling (to be deposited in coll. BMNH); 5 3, 2 ƤƤ, same data as for holotype except dated 9–16.iv.2007, leg. Houhun Li et al.; 1 3, Sha Lo Tung, Tai Po, Hong Kong, 225 m, 19.iv.2007, leg. Houhun Li et al.
Description. Imago (Fig. 4). Wing expanse 9.0− 11.5 mm. Head with vertex shiny white, frons shiny grey, posterior area deep brown. Antenna with scape white, flagellum white and deep yellowish brown. Labial palpus with basal two segments dark ocherous brown; third segment with basal 3/5 white, distal 2/5 black except white tip, longer than second. Thorax and tegula dark brownish yellow. Forewing dark ochreous brown except distal 1/5 shiny white, with small black dot placed above tornus; broad white fascia from costal 1/3 extending obliquely to middle of dorsum, widened anteriorly; cilia white tinged with black. Hindwing and cilia grey. Fore- and midlegs black on dorsal surface, ringed with white at apices of tibiae and on tarsi, greyish on ventral surface; hindleg grey.
Male genitalia (Fig. 14). Uncus rather long, wide at base, narrowed to about 2/5, medial portion narrowed, then slightly widened from 3/5 to apex; posterior margin concave medially, forming a pair of small processes posterolaterally. Gnathos short tongue-shaped, granulated in anterior half; lateral arms short and slender, about half as long as gnathos. Valva broad at base, slightly narrowed to apex; costa medially concave, distally produced into a strong process arched dorsally and with minute apical teeth. Sacculus narrow, broadened and setose near end, produced to a large apex-toothed saccular process, with another large clubbed process arising from its base, far exceeding end of valva and rounded at apex; a small spine between costal and saccular processes. Saccus about 3/5 length of uncus, more or less triangular, with rounded apex. Juxta long and slender, reaching middle of uncus; lateral lobe slender, curved distally, acute at apex. Phallus slender, longer than valva, with two small teeth and two long spines distally.
Female genitalia (Fig. 22). Apophysis anterioris about 3/5 as long as apophysis posterioris. Lamella postvaginalis large, weakly sclerotized. Lamella antevaginalis large and heavily sclerotized, irregularly shaped, posterior margin with one large and a few small teeth, anterior 1/3 folded and scaled, lateral side sinuate. Ductus bursae with basal 3/5 entirely sclerotized; distal 2/5 membranous. Corpus bursae membranous; signa a pair of pear-shaped plates with dense teeth.
Diagnosis. This species is characterized by the forewing with distal 1/5 shiny white, the male valva with three differently shaped apical processes, and the female lamella antevaginalis margined with teeth posteriorly.
Etymology. The specific name is derived from the Latin prefix longi - (long) and the word uncatus (uncus), referring to the elongate uncus.
Hong Kong distribution and status. Local, recorded from the central N.T. (KARC, KFBG, Sha Lo Tung) and Hong Kong Island (Red Hill); uncommon, thirteen records from secondary forest, feng shui woodland and coastal shrubland; altitudinal range: 45 m to 550 m elevation; flight period: possibly trivoltine, late March to mid-April and mid-July to early August and mid-September to early October.
Discussion. In Promalactis, third segment of the labial palpus is usually shorter than the second. But in this species, the third segment is distinctly longer than the second.
description: Published as part of Wang, Shuxia, Kendrick, Roger C. & Sterling, Philip, 2009, Microlepidoptera of Hong Kong: Oecophoridae I: the genus Promalactis Meyrick, pp. 31-44 in Zootaxa 2239 on pages 36-37, DOI: 10.5281/zenodo.275204