Paracymoriza distinctalis ( Leech, 1889 )

Shin, Bora, Choi, Sei-Woong & Kim, Sung-Soo, 2022, Fourteen new records of Crambidae (Lepidoptera) from South Korea, Zootaxa 5159 (4), pp. 513-534 : 514-515

Paracymoriza distinctalis ( Leech, 1889)

( Figs. 1A , 2A, 2B , 3A )

Diasemia distinctalis Leech, 1889: 67 . TL: China, Snowy Valley near Ningpo.

Parthenodes triangulalis South in Leech & South, 1901: 438, pl. 14, fig. 26. TL: China, Moupin.

Parthenodes triangularis Klima, 1937: 124 .

Paracymoriza distinctalis: Nuss et al, 2003 –2021.

Material examined. 1 male, Whabuk-myon, GB: Sangju , 2020.06.12. (Kim SS) ; 1 female, Mt. Unmoonsan, GB: Chungdo , 2008.09.05. (Kim SS) .

Diagnosis. Paracymoriza distinctalis can be distinguished by the dark brown forewing with whitish medial lines and whitish dots on subtermen and dark brown hindwing with whitish central fascia. This species is similar to P. fuscalis (Yoshiyasu, 1985) in wing ground color, but can be easily distinguished by the whitish central fascia with a dark blackish lunular dot on the hindwing. In South Korea, P. distinctalis can be distinguished from P. prodigalis ( Leech, 1889) by the dark brown wing color.

Description. Wingspan 22mm. Head. Antenna filiform; frons broad, covered with whitish scales; maxillary palpi porrect; labial palpi upturned, long, about 1.5 times to eye diameter, 1 st segment with long white scales. Body whitish, male hindleg with a pair of bunches of long white hairs. Forewing ground color dark brown; basal line tinged with whitish; antemedial line whitish, slanted, costally inwardly bent; postmedial line whitish, costally relatively thick and narrowed, medially strongly inwardly curled and almost meet antemedial line, dorsally projected outward; central fascia anteriorly with two whitish large dots, posteriorly with a dark brown large triangular dot; subtermen with about seven white dots in different shape and size, the largest third white dot from the top; termen tinged with dark brown and yellowish-white fringes. Hindwing dark brown in ground color; central fascia white, tapered to dorsum, discal dot blackish, lunular, bordered with blackish ante- and postmedial lines; subtermen with several white dots in different size; termen with black and yellowish white fringes. Male genitalia. Uncus long, triangular; gnathos long, slender almost equal length to the uncus; tegumen as long as vinculum; juxta broad; saccus broad. Valva long slender, apex with a tuft of long setae; costa long, slender; sacculus basally thick and tapered distally. Aedeagus long, slender, apex with a sclerotized plate, cornutus absent. Female genitalia. Papillae anales narrow; posterior and anterior apophyses long; ostium bursae simple, membranous, ventrally V-shaped; ductus bursae tapered, anteriorly with a colliculum; corpus bursae long sac-shaped, almost twice to the length of ductus bursae, signum absent.

Distribution. South Korea and China.

DNA barcoding. One specimen from South Korea ( OK501198 ) was sequenced, and the genetic difference between P. distinctalis and its close relative, P. prodigalis was 5.9%.

Remarks. The genus Paracymoriza includes about 40 species in the Oriental and Palearctic regions. There were differences in the wing pattern and male genitalia compared with P. distinctalis in China (Chen et al., 2007): the lunular discal dot on the central fascia of the hindwing in the South Korean specimen was large. In contrast, it was relatively short in the Chinese specimen, and the length of the gnathos was much longer, almost equal length to the uncus in the South Korean specimen while about 2/3 of the length of uncus in the Chinese specimen. Thus, the status of the species in South Korea needs further examination.

Figures

FIGURE 1. Adults of 14 species newly recorded from Korea. Scale bar=5 mm. A. Paracymoriza distinctalis, B. Pseudocatharylla duplicellus, C. Psammotis orientalis, D. Anania albeoverbascalis, E. Anania stachydalis, F. Ecpyrrhorrhoe rubiginalis, G. Scoparia iwasakii, H. Haritalodes basipunctalis, I. Nagiella inferior, J. Notarcha aurolinealis, K. Herpetogramma okamotoi, L. Glyphodes formosanus, M. Mecyna fusei, and N. Udea tritalis.

FIGURE 2. Male genitalia of the Crambidae from Korea. Scale bar = 1mm (A, E, G, I, K), 0.5mm (B, C, D. F, H, J, L). A, B. Paracymoriza distinctalis; C, D. Pseudocatharylla duplicellus; E, F. Anania albeoverbascalis; G, H. Scoparia iwasakii; I, J. Haritalodes basipunctalis; K, L. Nagiella inferior.

FIGURE 3. Female genitalia of the Crambidae from Korea. Scale bar = 1mm. A. Paracymoriza distinctalis, B. Pseudocatharylla duplicellus, C. Psammotis orientalis, D. Anania albeoverbascalis, E. Anania stachydalis, F. Ecpyrrhorrhoe rubiginalis.