Dusungwua dichromella ( Ragonot, 1893 )

Ren, Yingdang, Yang, Linlin, Liu, Hongxia & Li, Houhun, 2020, Taxonomic review of the genus Dusungwua Kemal, Kizildağ & Koçak, 2020 (Lepidoptera: Pyralidae), with descriptions of six new species and propositions of synonyms, Zootaxa 4894 (3), pp. 341-365 : 348

publication ID	https://doi.org/10.11646/zootaxa.4894.3.3
publication LSID	lsid:zoobank.org:pub:4E895EDB-98C5-4ADD-996B-183B7145C764
DOI	https://doi.org/10.5281/zenodo.4331868
persistent identifier	https://treatment.plazi.org/id/1F4F2E7C-FF8B-1020-FF16-81F2FB25F802
treatment provided by	Plazi (2020-12-11 00:06:32, last updated 2024-11-29 13:04:11)
scientific name	Dusungwua dichromella ( Ragonot, 1893 )
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Dusungwua dichromella ( Ragonot, 1893)

( Figs 1 View FIGURE 1 , 5 View FIGURES 3–6 , 16 View FIGURE 16 , 27 View FIGURES 25–31 )

Rhodophaea dichromella Ragonot, 1893: 75 View in CoL . TL: Japan. TD: CNC.

Eurhodope dichromella: Shibuya, 1932: 331 .

Acrobasis dichromella: Roesler, 1985: 29 .

Trachycera dichromella: Roesler, 1987: 316 View in CoL .

Furcata dichromella: Du, Sung & Wu, 2005: 101 .

Eurhodope pseudodichromella Yamanaka, 1980: 67 View in CoL . Syn. nov.

Acrobasis pseudodichromella: Roesler, 1985: 29 .

Trachycera pseudodichromella: Roesler, 1987: 316 View in CoL .

Eurhodope (Eurhophaea) pseudodichromella Yamanaka View in CoL : Xu et al., 2005: 324.

Furcata pseudodichromella: Du, Sung & Wu, 2005: 102 .

Dusungwua dichromella: Kemal, Kizildağ & Koçak, 2020: 2 .

Diagnosis. Adult ( Fig. 5 View FIGURES 3–6 ) with wingspan 18.0̅24.0 mm. This species can be recognized by the following characters: in the male genitalia ( Fig. 16 View FIGURE 16 ), the uncus is tapered abruptly near middle from broad base, with rather narrow and tubular distal part, the gnathos is expanded in distal half and has a small bifid apex, postero-lateral lobe of the transtilla is digitate, form an acute angle of about 60°, and the phallus has an ovate spinose patch near apex; in the female genitalia ( Fig. 27 View FIGURES 25–31 ), the antrum is rounded-triangular, the corpus bursae is elongate, 3.5 times as long as wide, and the signum situated at anterior 2/7 of the corpus bursae. It is superficially quite similar to D. paradichromella , but can be separated from the latter by the forewing diffused with much more white scales in median area, the uncus tapered abruptly near middle, the gnathos with distal half dilated in the male genitalia, and the signum situated at anterior 2/7 of the corpus bursae; in D. paradichromella , the forewing is mottled with less white scales in median area, the uncus is gradually narrowed, the gnathos is clubbed in the male genitalia, and the signum situated at posterior 2/5 of the corpus bursae in the female genitalia.

Material examined. 251 male and 86 female specimens in different localities of China are examined .

Distribution. China (Anhui, Beijing, Fujian, Gansu, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangxi, Jilin, Liaoning, Shaanxi, Shandong, Sichuan, Tianjin, Zhejiang), Japan.

Discussion. Variations occur in both male and female genitalia. In the male genitalia ( Fig. 16 View FIGURE 16 a-d), the distal narrow part of the uncus varies from 1/3 to 1/2 of the total length; the distal half of the gnathos is expanded to varying degrees; postero-lateral lobes of the transtilla form an acute angle of 45° to 60°, shallowly or deeply within individuals. In the female genitalia, the corpus bursae varies in shape: it is usually elongate, slightly widening toward anterior margin; in some species, the distal 1/3 is wider or dilated subroundly ( Fig. 27a View FIGURES 25–31 ).

Yamanaka (1980) described D. pseudodichromella ( Yamanaka, 1980) from Japan. Yamanaka stated that D. pseudodichromella differed from D. dichromella in the antemedian line of the forewing more gently curved, the postero-lateral lobes of the transtilla are narrower and more deeply concave in between. We regard these as variations within species. Hence, we treat D. pseudodichromella as a synonym of D. dichromella .

References

Du, Y. L., Sung, S. M. & Wu, C. S. (2005) A new genus in the subfamily Phycitinae (Lepidoptera: Pyralidae) from China. Annales Zoologici, 55 (1), 99 - 105.

Kemal, M., Kizildag, S. & Kocak, A. O. (2020) On the nomenclature of a generic name in the Phycitinae of East Asia (Lepidop- tera, Pyraloidea). Miscellaneous Papers, 205, 1 - 2. [https: // www. researchgate. net / publication / 339415662]

Ragonot, E. L. (1893) Monographie des Phycitinae et des Galleriinae. In: Romanoff, N. M., Memoires sur les Lepidopteres, St. Ptersburg, VII, pp. i-lvi + 1 - 658 pp., pls. 1 - 23.

Roesler, R. U. (1985) Neue Resultate in der Benennung von Termini bei Phycitinae (Lepidoptera, Pyraloidea) mit Neunachweisen f ʾ r Europa. Neue Entomologische Nachrichten, 17, 29 - 38.

Roesler, R. U. (1987) Die bisher als Rhodophaea gelaufige Gattung Trachycera Ragonot 1893 (Lepidoptera, Pyralidae, Phycitinae) in der Palaarktis-Taxonomische Neuorientierung und Beschreibung neuer Taxa. Deutsche Entomologische Zeitschrift, Neue Folge, 97 (21), 305 - 319.

Shibuya, J. (1932) List of the Japanese Phycitinae. Insect world, Gifu, 35, 255 ‾ 258 + 295 ‾ 298 + 331 ‾ 335.

Yamanaka, H. (1980) Descriptions of two new species of Eurhodope and synonymic notes of two known species belonging to Eurhodope and Assara from Japan (Lepidoptera: Pyralidae: Phycitinae). Transactions of the Lepidopterological Society of Japan, 31 (1 - 2), 66 - 73.

Figures

FIGURE 1. Distribution of Dusungwua in China ● D. antennalveata sp. nov.; ♣ D. basinigra sp. nov.; ■ D. dichromella; ♠ D. fascecornuta sp. nov.; ♥ D. karenkolla; ▼D. ohkunii; ▲D. paradichromella; ☆ D. paripalpa sp. nov.; ♦ D. quadrangula; Ǫ D. similiquadrangula sp. nov.; □ D. strictivinculum sp. nov.

FIGURE 16. Male genitalia of Dusungwua dichromella, slide No. RYD04832. 16a–d, variations, slide Nos.: a, LJY11373; b. DYL00553; c, LHX14151; d, RYD04629 (Scale bar = 0.5 mm).

FIGURES 3–6. Adults of Dusungwua spp. 3, D. antennalveata sp. nov., holotype, ♂; 4, D. basinigra sp. nov., holotype, ♂; 5, D. dichromella, ♂; 6, D. fascecornuta sp. nov., paratype, ♂ (Scale bars: 3–6 = 5 mm; 3a–6a = 0.5 mm).

FIGURES 25–31. Female genitalia of Dusungwua spp. 25, D. antennalveata sp. nov., paratype, slide No. RYD04332; 26, D. basinigra sp. nov., paratype, slide No. RYD04365; 27, D. dichromella, slide No. LHX14152, 27a, slide No. RYD04817; 28, D. fascecornuta sp. nov., paratype, slide No. LHX14181; 29, D. karenkolla, slide No. LHX14180; 30, D. ohkunii, slide No. LJY09289; 31, D. paradichromella, slide No. RYD04822 (Scale bar = 0.5 mm).