Dilar lulanae Li & Liu, 2025, sp. nov.

Dilar lulanae sp. nov. Fig. 4 Common name. 路兰栉角蛉 Diagnosis. The new species is characterised by the forewing with densely transverse arcuate stripes (Fig. 4 A, B), by the presence of male dorsoprocessus (Fig. 4 C, I), by the male ectoproct posterodorsally with three sclerotised, tiny teeth at the middle (Fig. 4 C, I) and by the male gonocoxite 9 proximately with a rounded lobe curved ventrally and distally, with a pointed lateral projection and an elongate spinous medial projection (Fig. 4 C, I, L). Description. Male. Body length 9.2 mm; forewing length 11.8 mm, hindwing length 10.2 mm. Head generally brown, with brown setose tubercles, tubercles surrounded by dark brown markings; vertex pale brown. Compound eyes blackish-brown. Antenna pale brown, scapus darker, each flagellum darker distally; flagellum pectinate, medial branches longer than those branches at base, longest branch nearly 6.2 times as long as corresponding flagellomere, distal six flagellomeres simple. Thorax brown; pronotum with a pair of pale brown ovoid tubercles at middle, tubercles surrounded by dark brown markings; mesonotum darker at middle, as well as along anterior, posterior and lateral margins; metanotum much paler than mesonotum, with posterior margin slightly darker. Legs yellow, femora, tibiae and each tarsomere dark brown at tip. Wings pale brown (Fig. 4 A). Forewing 2.3 times as long as wide, with many transversely arcuate stripes, markings darker on base and costal space; two nygmata present at base and middle, median nygma surrounded by a brown spot; longitudinal veins pale yellow, interrupted by many brown spots; crossveins pale brown. Hindwing 2.1 times as long as wide, almost entirely pale brown, with less markings than forewing. Abdomen brown, each pregenital segment dorsally dark brown. Tergum 9 in dorsal view with an arcuate incision, a nearly U-shaped posterior incision and a dorsoprocessus, leaving a pair of hemitergites, which are obtuse distally and densely setose; dorsoprocessus subtriangular, almost membranous (Fig. 4 C, I). Sternum 9 nearly subtrapezoidal, only one third in length of tergum 9, convex posteriad (Fig. 4 J, K). Ectoproct in dorsal view nearly trapezoidal, with an arcuate anterior incision; posterodorsally with three sclerotised, tiny teeth at middle (Fig. 4 C, I), posteroventrally with a bifid digitiform projection and a pair of bifid unguiform projections (Fig. 4 I, M). Gonocoxite 9 nearly trapezoidal in dorsal view, anteriorly with a rounded lobe strongly curved ventrally along lateral margin, posteriorly with a pointed lateral projection and an elongate, spinous medial projection curved ventrally (Fig. 4 C, I, L). Gonocoxite 10 slender elongate, almost twice as long as gonocoxite 9, anterior half weakly sclerotised, with pointed base, medially swollen and rounded, distally strongly sclerotised, with a blade-like projection (Fig. 4 D, J). Fused gonocoxites 11 nearly beam-shaped, laterally slightly extended, connecting to bases of gonocoxite 9 (Fig. 4 C, I). Hypandrium internum nearly trapezoidal, with lateral margins slightly arcuate (Fig. 4 D, J). Female. Body length 11.0 mm; forewing length 16.6 mm, hindwing length 14.0 mm. Wings with markings much darker than those in male (Fig. 4 B). Sternum 7 in lateral view nearly rectangular, in ventral view nearly trapezoidal, with posterior margin slightly concave at middle. Segment 8 ventrally without subgenitale (Fig. 4 H, O). Tergum 9 in lateral view as wide as tergum 8 (Fig. 4 G, N). Bursa copulatrix with colleterial gland tubular, extended to segment 7; basal part of bursa copulatrix like a round sac, in lateral view anteriorly strongly sclerotised (Fig. 4 G, N), in ventral view like a rounded sclerite posteriorly with a pair of smaller, ovoid projections (Fig. 4 H, O); bursal accessory gland not observed. Ectoproct small, ovoid (Fig. 4 G, N). Materials examined. Holotype ♂, China • Chongqing Province, Guangyangwulipo Nature Reserve [官阳五里坡自然保护区], 31.3733°N, 109.9289°E, 1834 m alt., 22–23. VI. 2021, Lulan Jie (CAU). Paratypes • 1 ♀ 9 ♂, same data as holotype (CAU). Etymology. The species is dedicated to Ms. Lulan Jie, who is a friend of the first author and collected the type specimens. Distribution. China (Chongqing). Remarks. This is the first record of the species from Chongqing Province in China. The new species D. lulanae sp. nov. is possibly a member of the D. guangxiensis species-group based on the presence of the dorsoprocessus of male tergum 9 (Fig. 4 C, I). However, in the D. guangxiensis species-group, the male gonocoxite 10 generally protrudeg a pointy lobe connecting to gonocoxite 9 submedially (Zhang et al. 2015). In D. lulanae sp. nov., the male gonocoxite 10 is swollen and rounded medially (Fig. 4 D, J). Furthermore, the new species can be distinguished from other members of the D. guangxiensis species-group by the short male gonocoxite 9, which is only half length of gonocoxite 10 (Fig. 4 D, J). In all the other members of the D. guangxiensis species-group, the male gonocoxite 9 is much longer or almost same length of gonocoxite 10 (Zhang et al. 2015).