Dasymallomyia immaculata Zhang, Hong, Zhang & Yang, 2026, sp. nov.
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| author | Zhang, Leyou Hong, Dawei Zhang, Bing Yang, Ding |
| author_facet | Zhang, Leyou Hong, Dawei Zhang, Bing Yang, Ding |
| contents | <p><i>Dasymallomyia immaculata</i> sp. nov.</p><p>Figs 8, 9</p><p><b>Type material.</b></p><p><i>Holotype</i>: China – Yunnan Prov. • ♂; Gongshan, Dulongjiang; 22 May 2007; Xingyue Liu (light trap); CAU.</p><p><b>Diagnosis.</b></p><p>Yellowish species. Prescutum and presutural scutum polished, with one brownish-yellow median stripe and two pairs of lateral brownish spots; two large brownish spots on scutal lobe. Legs mostly yellow, slightly darker on tips of tibiae and tarsi, femora without subterminal ring. Wing unpatterned. Abdomen mainly brownish yellow. Outer gonostylus blade-shaped, narrowing towards apex. Inner gonostylus dark, distinctly bifid; posterior branch longer than anterior branch, long curved spine-like.</p><p><b>Description.</b></p><p><b>Male</b>. Body length 5.5 mm, wing length 6.2–6.5 mm. Antenna length 1.6 mm.</p><p><i>Head</i> (Fig. 8 A, B). Mostly yellowish with pale gray microtrichia. Setae on head brownish yellow to yellow. Antenna brownish yellow except distal flagellomeres yellow. Scape cylindrical, nearly 1.5 times as long as wide; flagellum 14 - segmented with long verticils, about 2–3 times as long as segment; flagellomeres oval. Proboscis brownish yellow with brownish setae; palpi brownish yellow with brownish setae.</p><p><i>Thorax</i> (Fig. 8 A, B). General yellow, distinctly polished on prescutum and scutum. Pronotum yellow. Prescutum and presutural scutum yellow with a dark median stripe and two pairs of brownish spots near median stripe; middle stripe distinct on anterior part, posterior part vague, nearly reaching transverse suture; anterior lateral spots distinctly smaller than posterior ones; posterior lateral spots subtriangular, separated with anterior lateral spots. Scutum yellow, with two large subtriangular brownish yellow spots on each scutal lobe, separated from or partly fused with each other, posterior one distinctly smaller than anterior one. Scutellum brownish yellow. Mediotergite brownish yellow, with small yellow area at lateral margin. Pleura brownish to brownish yellow on propleuron, anepisternum, ventral half of katepisternum, meron, and ventral part of laterotergite. Setae on thorax yellow. Legs mostly yellow; trochanters mainly brownish yellow; tips of tibiae and tarsi brownish. Setae on legs brownish yellow to yellow. Wing (Fig. 7 C) hyaline, slightly tinged with yellowish, unpatterned. Veins mainly yellow, yellowish on Sc and veins near wing base. Venation: R 2 ending at fork of R 3 + 4; R 3 about 1 / 3 as long as R 4; cell m 1 + 2 about as long as its petiole. Halter 0.8 mm long, pale yellow.</p><p><i>Abdomen</i> (Fig. 8 A). Brownish on tergites and yellow on sternites, posterior margins of tergites weakly yellowish.</p><p><i>Hypopygium</i> (Figs 8 D, 8 E, 9). Posterior margin of tergite 9 nearly straight (Fig. 9 A). Sternite 9 strongly convex at middle (Fig. 9 B). Gonocoxite longer than tergite 9, broad on basal part, rounded at tip (Figs 8 D, 8 E, 9 A, 9 B). Outer gonostylus blade-shaped, wide at base, and narrowing towards apex (Fig. 9 D). Inner gonostylus distinctly bifid (Fig. 9 C); anterior branch apically blackened, sclerotized, curved outward; posterior branch long curved spine-like; a rounded lobe near posterior branch. Aedeagus (Fig. 9 E, F) subconical, its short, darkened tip directed posteroventrally, with some setae near middle.</p><p><b>Female</b>. Unknown</p><p><b>Distribution.</b></p><p>China (Yunnan).</p><p><b>Etymology.</b></p><p>The specific name refers to the unpatterned wing.</p><p><b>Remark.</b></p><p>This new species is distinctive in having the femoral subterminal ring inconspicuous or absent. It is similar to <i>D. tanyphallus</i> Alexander, 1964 from India (Sikkim) in having a similar outer gonostylus, but can be distinguished from the latter by the aedeagus having a very short terminal point. In contrast, the aedeagus of <i>D. tanyphallus</i> bears an elongate terminal point (Alexander 1964: fig. 18).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19232466 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Dasymallomyia immaculata Zhang, Hong, Zhang & Yang, 2026, sp. nov. Zhang, Leyou Hong, Dawei Zhang, Bing Yang, Ding Biodiversity Taxonomy Animalia Arthropoda Insecta Diptera Limoniidae Dasymallomyia Dasymallomyia immaculata <p><i>Dasymallomyia immaculata</i> sp. nov.</p><p>Figs 8, 9</p><p><b>Type material.</b></p><p><i>Holotype</i>: China – Yunnan Prov. • ♂; Gongshan, Dulongjiang; 22 May 2007; Xingyue Liu (light trap); CAU.</p><p><b>Diagnosis.</b></p><p>Yellowish species. Prescutum and presutural scutum polished, with one brownish-yellow median stripe and two pairs of lateral brownish spots; two large brownish spots on scutal lobe. Legs mostly yellow, slightly darker on tips of tibiae and tarsi, femora without subterminal ring. Wing unpatterned. Abdomen mainly brownish yellow. Outer gonostylus blade-shaped, narrowing towards apex. Inner gonostylus dark, distinctly bifid; posterior branch longer than anterior branch, long curved spine-like.</p><p><b>Description.</b></p><p><b>Male</b>. Body length 5.5 mm, wing length 6.2–6.5 mm. Antenna length 1.6 mm.</p><p><i>Head</i> (Fig. 8 A, B). Mostly yellowish with pale gray microtrichia. Setae on head brownish yellow to yellow. Antenna brownish yellow except distal flagellomeres yellow. Scape cylindrical, nearly 1.5 times as long as wide; flagellum 14 - segmented with long verticils, about 2–3 times as long as segment; flagellomeres oval. Proboscis brownish yellow with brownish setae; palpi brownish yellow with brownish setae.</p><p><i>Thorax</i> (Fig. 8 A, B). General yellow, distinctly polished on prescutum and scutum. Pronotum yellow. Prescutum and presutural scutum yellow with a dark median stripe and two pairs of brownish spots near median stripe; middle stripe distinct on anterior part, posterior part vague, nearly reaching transverse suture; anterior lateral spots distinctly smaller than posterior ones; posterior lateral spots subtriangular, separated with anterior lateral spots. Scutum yellow, with two large subtriangular brownish yellow spots on each scutal lobe, separated from or partly fused with each other, posterior one distinctly smaller than anterior one. Scutellum brownish yellow. Mediotergite brownish yellow, with small yellow area at lateral margin. Pleura brownish to brownish yellow on propleuron, anepisternum, ventral half of katepisternum, meron, and ventral part of laterotergite. Setae on thorax yellow. Legs mostly yellow; trochanters mainly brownish yellow; tips of tibiae and tarsi brownish. Setae on legs brownish yellow to yellow. Wing (Fig. 7 C) hyaline, slightly tinged with yellowish, unpatterned. Veins mainly yellow, yellowish on Sc and veins near wing base. Venation: R 2 ending at fork of R 3 + 4; R 3 about 1 / 3 as long as R 4; cell m 1 + 2 about as long as its petiole. Halter 0.8 mm long, pale yellow.</p><p><i>Abdomen</i> (Fig. 8 A). Brownish on tergites and yellow on sternites, posterior margins of tergites weakly yellowish.</p><p><i>Hypopygium</i> (Figs 8 D, 8 E, 9). Posterior margin of tergite 9 nearly straight (Fig. 9 A). Sternite 9 strongly convex at middle (Fig. 9 B). Gonocoxite longer than tergite 9, broad on basal part, rounded at tip (Figs 8 D, 8 E, 9 A, 9 B). Outer gonostylus blade-shaped, wide at base, and narrowing towards apex (Fig. 9 D). Inner gonostylus distinctly bifid (Fig. 9 C); anterior branch apically blackened, sclerotized, curved outward; posterior branch long curved spine-like; a rounded lobe near posterior branch. Aedeagus (Fig. 9 E, F) subconical, its short, darkened tip directed posteroventrally, with some setae near middle.</p><p><b>Female</b>. Unknown</p><p><b>Distribution.</b></p><p>China (Yunnan).</p><p><b>Etymology.</b></p><p>The specific name refers to the unpatterned wing.</p><p><b>Remark.</b></p><p>This new species is distinctive in having the femoral subterminal ring inconspicuous or absent. It is similar to <i>D. tanyphallus</i> Alexander, 1964 from India (Sikkim) in having a similar outer gonostylus, but can be distinguished from the latter by the aedeagus having a very short terminal point. In contrast, the aedeagus of <i>D. tanyphallus</i> bears an elongate terminal point (Alexander 1964: fig. 18).</p> |
| title | Dasymallomyia immaculata Zhang, Hong, Zhang & Yang, 2026, sp. nov. |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Diptera Limoniidae Dasymallomyia Dasymallomyia immaculata |
| url | https://doi.org/10.5281/zenodo.19232466 |