Dilar austroindicus, 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 : 202-203

publication ID

https://doi.org/ 10.11646/zootaxa.4743.2.4

publication LSID

lsid:zoobank.org:pub:01088971-F298-4C8A-82BE-0E418F2FA4B7

DOI

https://doi.org/10.5281/zenodo.3687966

persistent identifier

https://treatment.plazi.org/id/567E941B-AC1D-D344-9EC1-FEF7FB6CFD4B

treatment provided by

Plazi

scientific name

Dilar austroindicus
status

sp. nov.

Dilar austroindicus sp. nov.

( Figs 1 View FIGURE 1 , 8–11 View FIGURES 8–11 )

Diagnosis. The new species is characterized by the forewings with numerous pale brown markings, arranged as several inconspicuous transverse stripes; the male genital sclerites with gonocoxite 9 incurved, elongated and narrowed on distal half, with anteromedially directed swollen tip, and the gonocoxite 10 with inner margin medially nearly right-angled.

Description. Male. Body length 3.1 mm; forewing length 6.3 mm, hindwing length 5.8 mm.

Head generally brown, with yellowish brown setose tubercles. Vertex brown. Frons yellowish brown, medially with a dark brown rounded marking. Compound eyes blackish brown. Antenna pale 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, pro- and mesonotum yellowish brown. Legs yellow, femora dark brown at tip. Wings hyaline, slightly pale yellow. Forewing 2.3 times as long as wide, with numerous pale brown markings, arranged as several inconspicuous transverse stripes; longitudinal veins pale yellow, interrupted by numerous brown spots; crossveins pale yellow. Hindwing 2.0 times as long as wide, almost immaculate.

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. 9 View FIGURES 8–11 ) subtrapezoidal, membranous, only half of the length of tergum 9. Ectoproct subtriangular ( Figs 8–9, 11 View FIGURES 8–11 ), in dorsal view with an arcuate anterior incision, posteroventrally with a pair of nearly semicircular and flattened projections ( Fig. 9 View FIGURES 8–11 ); posterodorsally with a pair of bifurcate unguiform projections ( Fig. 8 View FIGURES 8–11 ). Gonocoxite 9 ( Fig. 8 View FIGURES 8–11 ) broadly inflated on proximal half, incurved, elongated and narrowed on distal half, forming an anteromedially directed projection which is slightly swollen at tip. Gonocoxite 10 ( Fig. 9 View FIGURES 8–11 ) almost as long as gonocoxite 9, obtuse and incurved proximally, inflated medially, with inner margin nearly right-angled in ventral view, distally with incurved and slenderly elongated apex. Fused gonocoxites 11 ( Fig. 8 View FIGURES 8–11 ) nearly W-shaped, laterally connecting to proximal half of gonocoxites 9 and gonocoxites 10. Hypandrium internum absent.

Female. Unknown.

Materials examined. Holotype ♂, India, Tamil Nadu, Alagar Hills, 21km. N[orth]. Madurai , 28.IX.1985, C. W. & L. B. O’Brien (CASC).

Distribution. India (Tamil Nadu).

Etymology. The specific epithet “ austroindicus ” refers to the distribution of this new species, restricted to southern India.

Remarks. Dilar anstroindicus sp. nov. appears to be closely related to D. biprojectus sp. nov. and D. truncatus sp. nov. in having similar male complexes of the gonocoxites 9, 10 and 11, with the inflated gonocoxite 9 distally or subdistally forming a projection directed medially ( Figs 8 View FIGURES 8–11 , 12 View FIGURES 12–15 , 31 View FIGURES 31–34 ), the gonocoxite 10 inflated on proximal half and falcate on distal half ( Figs 9 View FIGURES 8–11 , 13 View FIGURES 12–15 , 32 View FIGURES 31–34 ), and the fused gonocoxites 11 anteriorly convex at middle ( Figs 8 View FIGURES 8–11 , 12 View FIGURES 12–15 , 31 View FIGURES 31–34 ). However, D. austroindicus sp. nov. can be distinguished from the two latter species by the gonocoxite 9 distally forming an anteromedially directed projection, which is swollen at tip ( Fig. 8 View FIGURES 8–11 ) and by the gonocoxite 10 with its inner margin medially nearly right-angled ( Fig. 9 View FIGURES 8–11 ). In D. biprojectus sp. nov., the male gonocoxite 9 subdistally and distally forms two short projections, one directed posteriorly and the other anteromedially ( Fig. 12 View FIGURES 12–15 ). In D. truncatus sp. nov., the male gonocoxite 9 distally is truncate and subdistally forms a short medially directed projection ( Fig. 31 View FIGURES 31–34 ). The two latter species have arcuate inner margins on the male gonocoxite 10 ( Figs. 13 View FIGURES 12–15 , 32 View FIGURES 31–34 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Neuroptera

Family

Dilaridae

Genus

Dilar

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