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

Dilar weiningensis sp. nov. Fig. 8 Common name. 威宁栉角蛉 Diagnosis. The new species is characterised by the forewing with many brown spots connected with each other as discontinuous stripes (Fig. 8 A) and by the inflated male gonocoxite 10 subdistally forming an additional blade-like lobe (Fig. 8 C, G). Description. Male. Body length 5.0 mm; forewing length 9.2 mm, hindwing length 7.4 mm. Head generally brown, with pale brown setose tubercles; vertex brown. Compound eyes blackish-brown. Antenna brown, scapus slightly darker, but pedicellus paler and pedicellus dark brown; flagellum pectinate, medial branches longer than those branches at base, longest branch nearly 5.0 times as long as corresponding flagellomere, distal several flagellomeres damaged. Thorax brown; pronotum with a pair of yellow ovoid tubercles at middle; mesonotum dark brown on mesoscutellum, as well as along anterior and lateral margins; metanotum paler than mesonotum. Legs pale brown, tibiae and each tarsomere dark brown at tip. Wings slightly pale brown (Fig. 8 A). Forewing 2.2 times as long as wide, brown spots, which are mostly connected with each other and arranged as discontinuous stripes; markings darker on base and costal space; two nygmata respectively present at base and middle, median nygma surrounded by a small brownish spot; longitudinal veins pale yellow, interrupted by many brown spots; crossveins pale brown. Hindwing 2.2 times as long as wide, almost immaculate. Abdomen brown. Tergum 9 in dorsal view with an arcuate incision, a nearly U-shaped posterior incision, leaving a pair of hemitergites, which are obtuse distally and densely setose. Sternum 9 almost half as long as tergum 9, convex posteriad (Fig. 8 C, G). Ectoproct in dorsal view nearly trapezoidal, with an arcuately anterior incision; posterodorsally with a pair of unguiform projections (Fig. 8 B, F), posteroventrally with a pair of digitiform projections and a pair of unguiform projections (Fig. 8 C, G, I). Gonocoxite 9 inflated at middle, with small and obtuse base, distal 1 / 3 bifurcated, with an incurved, unguiform projection and a shorter, pointed projection directed posterolaterally (Fig. 8 B, F). Gonocoxite 10 slightly inflated, almost as long as gonocoxite 9, with narrow, incurved base, subdistally forming an additional blade-like lobe (Fig. 8 C, G). Fused gonocoxites 11 nearly beam-shaped, strongly anteriorly convex, laterally connecting to bases of gonocoxites 9 (Fig. 8 C, F). Hypandrium internum large, nearly trapezoidal, with lateral margins slightly arcuate (Fig. 8 C, G). Materials examined. Holotype ♂, China • Guizhou Province, Weining County, Zhejue Town, Huangshan Nature Reserve [威宁县哲觉镇黄杉保护区场], 18. VIII. 2020, Tao Li (CAU). Etymology. The specific epithet “ weiningensis ” refers to the type locality of the new species, i. e. Weining County, Guizhou Province, China. Distribution. China (Guizhou). Remarks. The new species cannot be assigned to any of the known species-groups characterised. It is distinctly different from the other species of Dilar, based on the male genital characters, the flattened male gonocoxite 9 distal 1 / 3 bifurcated, with an incurved, unguiform projection and a shorter, pointed projection directed posterolaterally (Fig. 8 F) and the male gonocoxite 10 subdistally forming an additional blade-like lobe (Fig. 8 C, G).

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-09-26
DOI
https://doi.org/10.5281/zenodo.17209404
Primary Topic
Geochemistry and Geologic Mapping
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article
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article

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

Zenodo (CERN European Organization for Nuclear Research)
Geochemistry and Geologic Mapping
article

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

article en

Abstract

Dilar weiningensis sp. nov. Fig. 8 Common name. 威宁栉角蛉 Diagnosis. The new species is characterised by the forewing with many brown spots connected with each other as discontinuous stripes (Fig. 8 A) and by the inflated male gonocoxite 10 subdistally forming an additional blade-like lobe (Fig. 8 C, G). Description. Male. Body length 5.0 mm; forewing length 9.2 mm, hindwing length 7.4 mm. Head generally brown, with pale brown setose tubercles; vertex brown. Compound eyes blackish-brown. Antenna brown, scapus slightly darker, but pedicellus paler and pedicellus dark brown; flagellum pectinate, medial branches longer than those branches at base, longest branch nearly 5.0 times as long as corresponding flagellomere, distal several flagellomeres damaged. Thorax brown; pronotum with a pair of yellow ovoid tubercles at middle; mesonotum dark brown on mesoscutellum, as well as along anterior and lateral margins; metanotum paler than mesonotum. Legs pale brown, tibiae and each tarsomere dark brown at tip. Wings slightly pale brown (Fig. 8 A). Forewing 2.2 times as long as wide, brown spots, which are mostly connected with each other and arranged as discontinuous stripes; markings darker on base and costal space; two nygmata respectively present at base and middle, median nygma surrounded by a small brownish spot; longitudinal veins pale yellow, interrupted by many brown spots; crossveins pale brown. Hindwing 2.2 times as long as wide, almost immaculate. Abdomen brown. Tergum 9 in dorsal view with an arcuate incision, a nearly U-shaped posterior incision, leaving a pair of hemitergites, which are obtuse distally and densely setose. Sternum 9 almost half as long as tergum 9, convex posteriad (Fig. 8 C, G). Ectoproct in dorsal view nearly trapezoidal, with an arcuately anterior incision; posterodorsally with a pair of unguiform projections (Fig. 8 B, F), posteroventrally with a pair of digitiform projections and a pair of unguiform projections (Fig. 8 C, G, I). Gonocoxite 9 inflated at middle, with small and obtuse base, distal 1 / 3 bifurcated, with an incurved, unguiform projection and a shorter, pointed projection directed posterolaterally (Fig. 8 B, F). Gonocoxite 10 slightly inflated, almost as long as gonocoxite 9, with narrow, incurved base, subdistally forming an additional blade-like lobe (Fig. 8 C, G). Fused gonocoxites 11 nearly beam-shaped, strongly anteriorly convex, laterally connecting to bases of gonocoxites 9 (Fig. 8 C, F). Hypandrium internum large, nearly trapezoidal, with lateral margins slightly arcuate (Fig. 8 C, G). Materials examined. Holotype ♂, China • Guizhou Province, Weining County, Zhejue Town, Huangshan Nature Reserve [威宁县哲觉镇黄杉保护区场], 18. VIII. 2020, Tao Li (CAU). Etymology. The specific epithet “ weiningensis ” refers to the type locality of the new species, i. e. Weining County, Guizhou Province, China. Distribution. China (Guizhou). Remarks. The new species cannot be assigned to any of the known species-groups characterised. It is distinctly different from the other species of Dilar, based on the male genital characters, the flattened male gonocoxite 9 distal 1 / 3 bifurcated, with an incurved, unguiform projection and a shorter, pointed projection directed posterolaterally (Fig. 8 F) and the male gonocoxite 10 subdistally forming an additional blade-like lobe (Fig. 8 C, G).

Zenodo (CERN European Organization for Nuclear Research)
South China Agricultural University (CN), China Agricultural University (CN)
Life in Land
Openalex Percentile: Top 27%
Geochemistry and Geologic Mapping
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