Dilar biprojectus, Li & Aspöck & Aspöck & Liu, 2020

Li, Di, Aspöck, Horst, Aspöck, Ulrike & Liu, Xingyue, 2020, A review of the pleasing lacewing genus Dilar Rambur (Neuroptera, Dilaridae) from South Asia, Zootaxa 4743 (2), pp. 200-216 : 203

Dilar biprojectus sp. nov.

( Figs 2 , 12–15 )

Diagnosis. The new species is characterized by the forewing with numerous pale brown markings which are arranged as transverse arcuate stripes; male gonocoxite 9 with distally and subdistally two short projections, and the male gonocoxite 10 is distally incurved and with falcate apex.

Description. Male. Body length 3.0 mm; forewing length 5.9 mm, hindwing length 5.3 mm.

Head generally yellowish brown, with pale yellowish brown setose tubercles. Vertex yellowish brown. Frons yellow. Compound eyes blackish brown. Antenna yellowish brown, flagellum pectinate on most flagellomeres, medial branches much longer than those on both ends, longest branch nearly 3.0 times as long as corresponding flagellomere, distal seven flagellomeres simple.

Thorax yellow, meso- and metathorax yellowish brown, and mesoscutellum with a brown subtriangular marking. Legs yellow, femora and tibiae dark brown at their tips. Wings hyaline, slightly smoky brown. Forewing 3.0 times as long as wide, with dense dark brown markings, arranged as transverse arcuate stripes; longitudinal veins pale yellow, interrupted by many brown spots; crossveins pale yellow. Hindwing 2.0 times as long as wide, paler than forewing.

Abdomen yellow. Tergum 9 in dorsal view with an arcuate anterior incision, a nearly U-shaped posterior incision, leaving a pair of broad hemitergites, which are obtuse distally and densely haired. Sternum 9 ( Fig. 13 ) subtrapezoidal, membranous, only half of the length of tergum 9. Ectoproct subtriangular ( Figs 12–13, 15 ), in dorsal view with an arcuate anterior incision, posteroventrally with a pair of nearly semicircular and flattened projections ( Fig. 13 ); posterodorsally with a pair of unguiform projections ( Fig. 12 ). Gonocoxite 9 ( Fig. 12 ) inflated, distally with short projection and subdistally with anteromedially directed additional projection which is slightly longer than the distal projection. Gonocoxite 10 ( Fig. 13 ) almost as long as gonocoxite 9, proximally and medially swollen, distally slenderly elongate, with incurved and falcate apex. Fused gonocoxites 11 nearly W-shaped, laterally connecting to proximal half of gonocoxites 9 and 10 ( Figs 12–13 ). Hypandrium internum subtrapezoidal ( Fig. 13 ).

Female. Unknown.

Materials examined. Holotype ♂, India, Mahar [ashtra], 5km. SW Mahabaleshwar, 19.X.1985, C. W. & L. B. O’Brien (CASC) . Paratype 1♂, same data as holotype (CASC) .

Distribution. India (Maharashtra).

Etymology. The species name “ biprojectus ” refers to the shape of gonocoxite 9, with two short projections distally and subdistally.

Remarks. For differentiation, see Remarks under Dilar austroindicus sp. nov.

Figures

FIGURE 2. Dilar biprojectus sp. nov., male holotype, habitus. Scale bar: 2.0 mm.

FIGURES 12–15. Dilar biprojectus sp. nov., male holotype. 12. genitalia, dorsal view; 13. genitalia, ventral view; 14. genitalia, lateral view; 15. ectoproct, caudal view. e: ectoproct; gx9: gonocoxite 9; gx10: gonocoxite 10; gx11: fused gonocoxites 11; hi: hypandrium internum; S9: sternum 9; T9: tergum 9. Scale bar: 0.2 mm.