Argyresthia (Blastotere) densa Liu, Wang et Li, 2017

Lee, Ga-Eun, Lee, Yeong-Don & Liu, Tengteng, 2023, A new species and two new records of Argyresthia Hübner, [1825] (Lepidoptera: Argyresthiidae) from Hallasan National Park of Korea, Zootaxa 5315 (3), pp. 282-290 : 287-289

Argyresthia (Blastotere) densa Liu, Wang et Li, 2017

Korean name: jan-jul- gwang-taek-jip-na-bang

( Figs 17–22 )

Argyresthia (Blastotere) densa Liu, Wang et Li, 2017: 20 . Type locality: Henan, China. Type depository: Nankai University.

Material examined. KOREA, Jeju-do, 1 ♁, 4 ♀, Jeju-si, Haean-dong, Hallasan National Park , Eorimok , 975 m, 18.VI.2022, leg. Ga-Eun Lee, genitalia slide nos LGE23001, 23003, 23005 ( JNU), DNA voucher nos LGE-G735, 736 ( JNU) .

Diagnosis. Forewing span 9.0–10.0 mm (n=5) ( Fig. 17 ). The species can be diagnosed by the grey forewing marked with transverse dark striae, the Y-shaped sternite VIII, the cornutus with strong denticles in the male genitalia ( Fig. 21 ), and the signum with a large oval basal plate and two horizontal horns in the female genitalia ( Fig. 22 ).

Variation. The type specimens from China have forewings more strongly mixed with yellow compared to a

Korean specimen. Also, sternite VIII is long and Y-shaped and the socius bears 17 setae in the holotype ( Liu et al.,

2017; fig. 89), whereas a single specimen from Korea has a short and reduced sternite VIII and the socius with 19

(right side) or 20 (left side) setae. Distribution. Korea (new record), China. GenBank accession numbers. OQ857838, OQ857839. DNA analysis. The closest relative of A. (B.) densa registered on GenBank is the European A. (B.) aurulentella

Stainton, 1849 (accession no. HM871641), with the genetic distance of 8.2% ( Table 1 ). Remarks. For the descriptions of adults, wing venation and genitalia, see Liu et al. (2017).

Figures

FIGURES 17–22. Argyresthia (Blastotere) densa Liu, Wang et Li. 17, adult, female; 18, head in lateral view; 19, male abdominal segment VIII, slide no. LGE23003; 20, male genitalia with sternite VIII attached, ditto; 21, phallus, ditto; 22, female genitalia, slide no. LGE23001 (Scale bars: 0.2 mm except fig. 17 = 2.0 mm).