Promalactis fuscimacularis Wang, 2021

Wang, Shuxia & Liu, Chen, 2021, Taxonomic study of the genus Promalactis Meyrick, 1908 (Lepidoptera Oecophoridae) XI. The rubra species-group and the fuscimacularis species-group with descriptions of six new species, Zootaxa 4996 (2), pp. 309-321 : 314-315

Promalactis fuscimacularis Wang , sp. nov.

( Figs 5 , 12 )

Type material. China, Sichuan: Holotype ♂, Hailuogou (29.60°N, 102.10°E), Luding, 1695 m, 30.VI.2016, leg. KJ Teng & XF Yang, slide No. LC 19608.

Diagnosis. The new species can be distinguished from members of the group in the male genitalia by the gnathos mesial plate being convex dorsodistally, the broad rectangular valva being roundly produced dorsoapically, and the juxta having a spiciform process arising from middle laterally.

Description. Adult ( Fig. 5 ). Forewing length 5.5 mm. Head with vertex and frons brownish grey, occiput dark brown. Labial palpus with second palpomere black, third palpomere black except white at base and apex. Antenna: scape white dorsally, greyish black ventrally; flagellum with basal several flagellomeres white and rest of flagellomeres black with white annuli on dorsal surface, black on ventral surface. Thorax and tegula dark rust brown. Forewing ochreous yellow; costal margin with a sub-triangular white spot at basal 3/5, extending across anterior angle of cell, with dense black scales forming ill-defined black spot anterolaterally; basal spot sub-quadrangular, dark ochreous brown mixed with black scales, with a very short white streak near base of fold, with a thin white line near its inner margin, edged with a wider arched white line on outer margin; dorsal spot sub-ovate, dark ochreous brown mixed with black and grey scales, extending from basal 2/3 to before tornus, arched to posterior margin of cell anteriorly; dorsal streak white edged with black scales, running along inner margin to middle of anterior margin of dorsal spot; distal patch black, diffused and narrowed along termen to tornus, with a white ovate spot at apex; fringe ochreous yellow except grey on extension of dorsal spot. Hindwing and fringe grey. Foreleg black except femur greyish white ventrally, tibia with a white spot basally and medially, with a tuft of white scales apically, tarsus white at apices of basal two tarsomeres; midleg pale brown ventrally, black dorsally, tibia with a white spot at base, with a tuft of white scales at middle and apex respectively, tarsus white at apices of basal two tarsomeres and on entire apical tarsomere; hindleg yellow ventrally, black dorsally, tarsus white at apices of basal four tarsomeres and on entire apical tarsomere.

Male genitalia ( Fig. 12 ). Uncus with basal 2/5 uniformly wide, abruptly narrowed to pointed apex distally. Gnathos slightly shorter than uncus; mesial plate elongate rectangular, obtuse apically, with scaly protuberances and convex dorsad distally. Tegumen branched from posterior 1/3; lateral arms slightly narrowed anteriorly. Valva broad rectangular, roundly produced and with spines dorsoapically; costa narrow, sclerotized, less than half length of ventral margin of valva, with a fine spine at base; sacculus wide at base, narrowed to distal 1/3, distally setose, produced to a large triangular process exceeding apex of valva and bearing a small apical spine directed dorsad. Saccus short, wide at base, narrowed to rounded apex. Juxta with basal 3/4 equal in width, narrowed triangularly to rounded apex distally, with a spiciform process arising from middle laterally; basal lobe short, narrowly rounded at apex.Aedeagus about 1.3 times length of valva, straight, distal 1/3 inflated, with a short stout spine-shaped preapical process; cornutus spine-shaped, about 2/5 length of aedeagus.

Female unknown.

Distribution. China (Sichuan).

Etymology. The specific epithet of the new species is derived from the Latin fusci- and macularis, referring to the large basal spot of the forewing.

Figures

FIGURES 1‒6. Adults of Promalactis spp. 1, P. albimarginalis, holotype ♂, 1a, ditto, showing white distal fringe; 2, P. introextensa, paratype ♂; 3, P. magnistica, holotype ♂; 4, P. anteromacularis, holotype ♂; 5, P. fuscimacularis, holotype ♂; 6, P. folivalvaris, holotype ♂. Scales=2 mm.

FIGURES 11‒14. Genitalia of Promalactis spp. 11, P. anteromacularis, holotype ♂, slide No. JYY17569; 12, P. fuscimacularis, holotype ♂, slide No. LC19608; 13, P. folivalvaris, holotype ♂, slide No. DZH11041; 14, P. folivalvaris, paratype ♀, slide No. DZH11042. Scales=0.2 mm.