Promalactis brevisaccata Du & Wang & Li 2013, sp. nov.
Creators: name: Du, Z. H.
name: Wang, S. X.
name: Li, H. H.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Oecophoridae
Promalactis
Promalactis brevisaccata

description: Promalactis brevisaccata sp. nov.   
(Figures 1C, 2C, 4B)   Diagnosis   
 Promalactis brevisaccata is similar to P. isodora Meyrick, 1908, by sharing white dots on the cell, termen and apex of the forewing as well as by having a same-shaped valva and juxta in the male genitalia. It can be distinguished from the latter by the forewing lacking the white dot under costal two-fifths; the gnathos with a triangular apical process and the aedeagus lacking cornutus in the male genitalia. In P. isodora, the forewing has a white dot under costal two-fifths; the gnathos lacks the apical process and the aedeagus has one spine-like cornutus.    Description   
 Adult (Figure 1C). Wingspan 8.0−9.0 mm. Head with vertex shining dark brown except white laterally, frons leaden, occiput dark brown mixed with grey scales. Labial palpus with basal and second segments greyish yellow on inner surface, ochreous brown mixed with black scales on outer surface; third segment black except white basally and apically, shorter than second. Antenna with scape white except black apically; flagellum alternately white and black on dorsal surface, dark brown on ventral surface. Thorax and tegula deep ochreous brown. Forewing ochreous brown, with white markings edged with black scales; costal margin black along basal fifth, with a subtriangular white spot near three-fifths, with a triangular black diffusion before this white spot, with a large quadrangular subapical black patch extending obliquely; fold with a very short white streak at base; cell with a short white streak extending from one-third to near two-fifths of fold, with a white dot at distal quarter above lower margin and near upper angle; dorsal margin with three white streaks extending to fold: basal streak from one-fifth to base of fold; second streak from before one-third arching to two-fifths of fold; third streak extending from slightly beyond middle obliquely to two-thirds of fold; small white dot at end of fold; apex with an oval white spot; termen with a white dot near tornus; cilia ochreous yellow, grey along distal part of dorsal margin, tinged with greyish brown on tornus. Hindwing and cilia dark grey. Foreleg with tibia and tarsus black, tibia dorsally with a white spot at base, middle and apex, tarsus with three white spots on dorsal surface; midleg with tibia and tarsus grey on ventral surface, black on dorsal surface, tibia dorsally with a white spot at base, with an oblique white stripe at middle, with a tuft of long white scales at apex, tarsus with four white spots on dorsal surface; hindleg yellow on ventral surface, greyish black on dorsal surface, tarsus with three white spots on dorsal surface.   
 Male genitalia (Figure 2C). Uncus with basal half broad, distal half tapering to apex. Gnathos lingulate, about same length as uncus, distal quarter scobinate, with a small triangular process apically. Tegumen with posterior half narrow, anterior half broad, branched from posterior three-fifths, truncate anteriorly. Valva with basal threequarters about same width, distal one-quarter narrowed to apex, distal three-quarters with dense setae dorsally and ventrally, apex with a small tooth-like process directing dorsad; costa concave along basal one-third, arched mesially. Sacculus broad basally, narrowed to one-third, distal two-thirds slightly narrower than basal one-third, apex pointed, directing dorsad, exceeding tip of costa. Saccus very short, about one-sixth length of uncus, rounded apically. Juxta with basal two-fifths digitate, distal three-fifths broadened, lamellate, with a very small spine-like process at laterodistal third, slightly concave at middle on posterior margin. Aedeagus straight, about four-fifths the length of valva; cornutus absent.   
 Female genitalia (Figure 4B). Apophysis anterioris strong, about half length of apophysis posterioris; apophysis posterioris expanded apically. Eighth tergum triangularly projected anteromesially; sternum with anterior half abruptly narrowed, sparsely setose posteriorly. Ostium bursae subovate. Antrum very small, nearly trapeziform. Ductus bursae membranous except weakly sclerotized on posterior section beyond antrum, posterior two-fifths thin, anterior three-fifths enlarged and with some short spines; ductus seminalis arising from posterior sixth of ductus bursae. Corpus bursae very small, about one-fifth length of ductus bursae, rounded; signum absent.    Type   
 Holotype, Male, Hueisun Exp. Forest (24 ◦ 05 ′ N, 121 ◦ 02 ′ E), Nantou County, Taiwan, China, 1100 m, 22−24 April 1999, leg. Mey and Ebert, genitalia slide No. MNHU- NK067 (MNHU).   
 Paratypes. Two males and three females, same data as holotype, genitalia slide Nos. MNHU-NK050 female, MNHU-NK057 male, MNHU-NK058 female, MNHU- NK062 female (MNHU).    Distribution   
China (Taiwan).   Etymology   
 This specific name is derived from the Latin prefix brevi-, meaning short, and Latin saccatus, meaning saccus, referring to the very short saccus.
description: Published as part of Du, Z. H., Wang, S. X. & Li, H. H., 2013, A review of the genus Promalactis Meyrick, 1908 (Lepidoptera: Oecophoridae) from Taiwan, China, pp. 87-108 in Journal of Natural History 48 (1 - 2) on pages 97-98, DOI: 10.1080/00222933.2013.791940, http://zenodo.org/record/4607589