Promalactis apicifurcata Wang, 2017

Hu, Sha & Wang, Shuxia, 2017, Taxonomic study of the genus Promalactis Meyrick (Lepidoptera, Oecophoridae) from Hainan Island, China (III), Zootaxa 4303 (4), pp. 590-600 : 596

Promalactis apicifurcata Wang , sp. nov.

( Figs. 6 , 14 a–b)

Type material. CHINA, Hainan Island: Holotype ♂, Hongkan (19.50°N, 109.30°E), 540 m, Yinggeling, 15.VIII.2015, coll. Qingyun Wang, Suran Li & Mengting Chen , slide No. HS 16036. Paratypes: 6♂, 17– 27.VII.2015, other data same as holotype ; 1♂, Wuzhishan Nature Reserves, 21.IV.2014? 710 m, coll. Tengteng Liu, Wei Guan & Xuemei Hu , slide No. HS 15077 ♂ ; 1♂, Wuzhishan Nature Reserves, 742 m, 18.V.2015, coll. Peixin Cong, Wei Guan & Sha Hu , slide No. HS 15195 ♂ ; 1♂, Limushan Forest Park (19.17°N, 109.73°E), 607 m, 25.VII.2014, coll. Peixin Cong, Linjie Liu & Sha Hu, slide No. HS 14156 ♂.

Diagnosis. This new species shares similar patterns with P. apicispinifera Wang, Kendric & Sterling, 2009 and P. unifurcata sp. nov. in both forewing patterns and male genitalia. Promalactis apicifurcata sp. nov. and P. unifurcata sp. nov. can be distinguished from P. apicispinifera by the sacculus being produced to a dorsoapical process and having a right ventral angle, while the sacculus of P. apicispinifera is simply produced to a distal process and lacks a ventral angle; P. apicifurcata sp. nov. can be separated from P. unifurcata sp. nov. by both the right and left lateral lobes furcated, while the right lateral lobe is not furcate in P. unifurcata .

Description. Adult ( Fig. 6 ) wingspan 6.5 mm. Head with vertex and frons yellow, occiput grayish brown. Labial palpus with second segment blackish brown on basal 2/3, distal 1/3 yellow, tinged with blackish brown scales at distal end on outer surface; third segment blackish brown except yellow at base and apex. Antenna with scape yellow except black apically; flagellum black ringed with yellow. Thorax ochreous brown; tegula ochreous brown basally, yellow distally. Forewing ground color ochreous yellow; costal margin with three blackish brown spots: basal spot large rectangular, oblique outward, across 2/3 width of wing ventrally; median spot subquadrangular, oblique outward and touching upper margin of cell ventrally, its inner margin ill-defined, outer margin extending to lower angle of cell and bordered by a white streak; distal spot large sub-triangular, occupying at least anterior 2/3 of apical area; white streak running along outer margin of basal costal spot to lower angle of cell and meeting white streak running from outer margin of median costal spot; dorsum with a small irregular black spot at base, with a large rectangular blackish brown spot at basal 1/3 oblique outward to lower margin of cell, edged laterally with white streaks running to above-mentioned oblique white streak; elliptic white spot at apex and termen respectively; tornal spot black, diffused to lower angle of cell; cilia yellow, black-tipped basally. Hindwing and cilia grayish brown. Foreleg blackish brown, tibia with yellow tuft of scales at middle and apex; midleg with femur yellow, blackish brown tibia with yellow dot at middle on dorsal surface and with yellow tuft of scales at middle and apex, tarsi of fore- and midlegs blackish brown except yellow at base and at apex of first tarsomere as well as on distal half of second and fifth tarsomeres; hindleg with femur and tibia grayish yellow on ventral surface, gray on dorsal surface, tarsus grayish yellow on ventral surface, blackish brown on dorsal surface except yellow at base and at apex of first tarsomere and on distal half of second and fifth tarsomeres.

Male genitalia ( Fig. 14 ): Uncus bell-like, parallel laterally in basal half, digitiform in distal half, rounded apically. Gnathos tongue-shaped, granulate distally, rounded apically, about same length as uncus. Valva separated into costal and saccular parts: costal part sub-rectangular, slightly narrowed to sinuate apex, costa narrow, sclerotized; saccular part sub-rectangular, produced to a setose, elongate triangular dorsoapical process that is about same length as uncus, sacculus narrow, sclerotized, setose distally, right angled apically. Saccus approximately same length as uncus, narrowly rounded anteriorly. Juxta with lateral lobes heavily sclerotized, asymmetrical: right lobe reaching base of uncus, longer than left lobe, forked distally and forming two small lobes of equal length, left lobe reaching middle of tegumen, furcate distally and forming two long branches of equal length; basal lobe reaching anterior 1/3 of saccus. Aedeagus longer than sacculus; cornutus longer than 1/5 length of aedeagus, spine-like, placed before middle.

Female unknown.

Distribution. China (Hainan).

Etymology. The specific epithet is derived from the latin apic - and furcatus, referring to both the right and left lobes which are forked distally.

Figures

FIGURES 1 – 8. Adults of Promalactis spp. 1, P. anterodilata sp. nov., paratype, male; 2, P. bitriangula sp. nov., holotype, male; 3, P. longiprocessa sp. nov., holotype, male; 4, P. tenuivalvata sp. nov., holotype, male; 5, P. unifurcata sp. nov., holotype, male; 6, P. apicifurcata sp. nov., holotype, male; 7, P. longimaculata sp. nov., holotype, male; 8, P. serrata, Du, Li & Wang, male. Scale bars: 1.0 mm.

FIGURES 13 – 15. Male genitalia of Promalactis spp. 13 a – b, P. unifurcata sp. nov., slide Nos.: a, holotype, HS 15073, b, paratype, HS 15189; 14 a – b, P. apicifurcata sp. nov., slide Nos.: a, paratype, HS 15201, b, paratype, HS 15077; 15, P. longimaculata sp. nov., paratype, slide No. HS 15078. Scale bars: 0.2 mm.