Promalactis medimacularis Wang, 2020

Wang, Shuxia & Liu, Chen, 2020, Taxonomic study of the genus Promalactis Meyrick, 1908 (Lepidoptera: Oecophoridae) IX. The maculosa species-group, with descriptions of eighteen new species, Zootaxa 4890 (1), pp. 38-66 : 60-61

Promalactis medimacularis Wang , sp. nov.

( Figs 17 , 34 , 46 )

Type material. CHINA, Hubei: Holotype ♂, Taohuachong (30.98°N, 116.02°E), Yingshan County, 635 m, 26. VI.2017, leg. W Guan & MQ Yang, slide No. JYY17800 . Paratypes (70♂, 8♀): Hubei: 15♂, 2♀, 23–27. VI.2017, other same data as holotype, slide Nos. JYY17775 ♂, JYY17778 ♂, JYY17779 ♂, JYY17780 ♂, JYY17781 ♂, JYY17789 ♀, JYY17799 ♂, JYY17829 ♀; 1♂, Houhe , Wufeng County, 1000 m, 10.VII.1999, leg. HH Li et al., slide No. DZH12254 ; 1♂, Mt. Wujia , Yingshan County, 880 m, 29. VI.2014, leg. W Guan & MQ Yang, slide No. JYY17773 ; Chongqing: 1♂, Wulixiang, Qianjiangqu , 870 m, 23.VII.2012, leg. YH Sun & AH Yin, slide No. DZH12327 ; Guizhou: 1♂, Fenshuiling , Suiyang County, 16.VIII.2010, leg. LL Yang, slide No. DZH10259 ; 1♂, Dongdai, Shuizu Town , Limingguan , Libo County, 720 m, 19.VII.2015, leg. MQ Yang & JE Lee, slide No. JYY17724 ; Zhejiang: 8♂, Qingliangfeng , Lin’an County, 900 m, 8–11.VIII.2005, leg. YL Xiao, slide Nos. W05019, W05021, W05026 ; 17♂, Zhonglieci, Tianmushan , 400 m, 25.VII–2.VIII.2011, leg. LL Yang & N Chen, slide Nos. DZH12083, DZH12086, DZH12092, HXM13127 ; 7♂, Sanmuping, Tianmushan , 789 m, 13–14.VII.2014, leg. AH Yin et al., slide Nos. HXM14134 , LC19481; 4♂, 1♀, Xiguan, Tianmushan , 566 m, 18–19.VII.2014, leg. AH Yin et al., slide Nos. HXM14136 ♂, HXM14241 ♀; 1♂, Sanmuping, Tianmushan , 789 m, 16.VII.2015, leg. AH Yin et al., slide No. LC19431 ; 1♀, Lao’an, Tianmushan , 555 m, 13.VII.2015, leg. AH Yin et al., slide No. LC19234 ; 1♂, Tianmushan , 335 m, 19.VII.2015, leg. AH Yin et al., slide No. JYY17795 ; 2♂, Huaxi Village, An’wen Town , Pan’an County, 542 m, 27–28.VII.2015, leg. AH Yin et al., slide No. LC19232 ; 1♂, Mt. Gutian, Quzhou , 412 m, 7.VII.2017, leg. ZG Zhang et al., slide No. JYY17796 ; Japan: 1♀, T. Yûobu , Gifu, Katayama , 8.VI.1920, leg. K Takeuchi, slide No. USNM-142358 ♀; 1♂, 3♀, Honsyû, Kinki, Sanzyôgadake, 24–29.VII.1951, leg. S Issiki, slide Nos. USNM-142357 ♀, USNM-142359 ♂, USNM-142368 ♀; 1♂, Kinki, Ise, Ôsugidani, 10.VI.1952, leg. S Issiki, slide No. USNM-142363 ♂ .

Diagnosis. The new species is similar to P. zhengi Wang et Li, 2004 . It can be distinguished from the latter in the male genitalia by the asymmetrical lateral arms of the juxta, the saccus shorter than the uncus and the cornutus about 1/5 the length of the aedeagus; in P. zhengi , the lateral arms of the juxta are symmetrical, the saccus is longer than the uncus, and the aedeagus is about 2/5 the length of the aedeagus ( Wang & Li 2004: 4, fig. 8).

Description. Adult ( Fig. 17 ). Wingspan 6.5–11.0 mm. Head with vertex brown, frons yellowish brown, oc-ciput dark brown with silvery scales. Labial palpus with basal segment pale yellow on inner surface, black on outer surface; second segment black; third segment black except white at base and apex. Scape of antenna brown and with a longitudinal white line on dorsal surface, white on ventral surface; flagellum black alternated with white on dorsal surface, blackish brown on ventral surface. Thorax and tegula black on basal half, ochreous yellow on distal half. Forewing ochreous yellow; costal spot black, sub-quadrate, obliquely crossing anterior margin of cell, edged with a white line on outer margin; distal spot black, sub-triangular; other markings white edged with black scales: cell with a white streak at basal 1/3 and above posterior angle of cell respectively, and a white dot below posterior angle of cell; fold with a short streak at base, above middle and at distal 1/4 respectively; dorsum with three white streaks: one near base, second streak from basal 2/5 reaching middle of fold, third streak from basal 2/3 meeting streak at distal 1/4 of fold, with a diffused blackish brown spot between second and third white streaks; apical spot small; terminal spot between tornus and apex; tornal spot black, diffused to posterior angle of cell; cilia ochreous yellow, black on extension of distal patch. Hindwing and cilia grey. Fore- and midlegs black, except midleg yellow ventrally, tibiae with a white dot at base and middle, with a tuft of white scales at apex, tarsi white at apices of basal two tarsomeres and on entire apical tarsomere of mid tarsus; hindleg yellow ventrally, grey dorsally, tarsus black except white at apices of basal two tarsomeres and on entire apical tarsomere.

Male genitalia ( Fig. 34 ). Uncus campaniform, with sparse setae laterally, wide at base, slightly narrowed to about basal 3/5, distal 2/5 distinctly slender, digitate. Gnathos as long as uncus; mesial plate broadly lingulate, with scale-like protuberances on distal 1/4, obtuse apically, with an ovate, membranous apical process; basal arm short, about 1/3 length of mesial plate. Tegumen broad, divided from posterior 1/2; lateral arm slightly narrowed anteriorly. Valva with basal 3/4 parallel, distal 1/4 slightly narrowed, produced into a thumb-shaped, sparsely setose lobe; costa slightly projected medially, with setae along distal half; sacculus narrow, well-defined to 3/5 length of ventral margin, distal 2/5 densely setose, produced to a free triangular process with an apical spine directed dorsad. Saccus almost parallel to rounded apex, shorter than uncus. Juxta strong and long, slightly asymmetrical: left lateral arm with basal half wide, distal half narrowed to obtuse and curved apex, reaching near posterior margin of tegumen; right lateral arm with basal 2/5 wide, distal 3/5 slightly narrowed to pointed and curved apex, reaching uncus apically; basal lobe clavate, crossing basal 2/3 of saccus.Aedeagus about twice times length of valva, straight; cornutus stout, thorn-like, about 1/5 length of aedeagus.

Female genitalia ( Fig. 46 ). Apophyses anteriores about half length of apophyses posteriores. Eighth sternum sub-rounded, with sparse setae on posterior margin. Antrum very short, sub-trapezoidal, concave on posterior margin, forming two small lateral lobes; narrow band from middle of lateral margin extending to near anterior margin of seventh sternum. Ductus bursae with posterior 2/5 sclerotized, anterior 3/5 membranous, ovoid and with small spines scattered from posterior 2/5 to 2/3, wrinkled anteriorly, curved near corpus bursae. Corpus bursae small, membranous, elliptic; signum absent.

Distribution. China (Chongqing, Guizhou, Hubei, Zhejiang); Japan.

Etymology. The specific epithet of this new species is derived from the Latin medius and macularis, referring to the black sub-quadrate spot in the middle of the costal margin.

Figures

FIGURES 13‒18. Adults of Promalactis spp. 13, P. ramivalvata, holotype, ♂; 14, P. aculeiformis, holotype, ♂; 15, P. apicitriangula, paratype, ♂; 16, P. curvispinosa, paratype, ♂; 17, P. medimacularis, holotype, ♂; 18, P. serraticostalis, holotype, ♂. Scales = 2 mm, except 15 scale = 1 mm.

FIGURES 31‒35. Male genitalia of Promalactis spp. 31, P. aculeiformis, holotype, slide No. DZH11036; 32, P. apicitriangula, holotype, slide No. JYY17715, 32a, enlarged cornutus, slide No. JYY17714; 33, P. curvispinosa, holotype, slide No. DZH11035; 34, P. medimacularis, holotype, slide No. JYY17800; 35, P. serraticostalis, holotype, slide No. DZH12115, 35a, enlarged cornutus. Scales = 0.2 mm.

FIGURES 42‒48. Female genitalia of Promalactis spp. 42, P. libona, paratype, slide No. JYY17722, 42a, enlarged signa, slide No. JYY17723; 43, P. medilargissima, paratype, slide No. LC19429; 44, P. ramivalvata, paratype, slide No. LC19438, 44a, enlarged ductus bursae; 45, P. curvispinosa, paratype, slide No. DZH11037; 46, P. medimacularis, paratype, slide No. JYY17829; 47, P. serraticostalis, paratype, slide No. DZH12114; 48, P. tricuspidata Wang et Li, 2004, slide No. JYY17977. Scales = 0.2 mm.