Psammotis orientalis Munroe & Mutuura, 1968

Shin, Bora, Choi, Sei-Woong & Kim, Sung-Soo, 2022, Fourteen new records of Crambidae (Lepidoptera) from South Korea, Zootaxa 5159 (4), pp. 513-534 : 518

Psammotis orientalis Munroe & Mutuura, 1968

( Figs. 1C , 3C )

Psammotis orientalis Munroe & Mutuura, 1968: 976–978 , figs 3–4, 20, 31. TL: Japan, Hokkaido, Sarobetu.

Material examined. 1 female, Sabuk-ri, GW: Jeongseon, 2018.08.13. (Kim SS)

Diagnosis. Psammotis orientalis can be diagnosed by the dark ochreous and broad central fascia and subtermen of the forewing and blackish hindwing with dark blackish postmedian line and broad subtermen. P. orientalis is externally very similar to P. pulveralis ( Hübner, 1796) in wing pattern elements, but can be separated by the dark ochreous and broad subterminal band of the forewing and the distribution: P. orientalis occurs in Eastern Asia, while P. pulveralis occurs in southern and central Europe.

Description. Wingspan 24mm. Head. Antenna filiform, frons broad, mixed with ochreous and dark brown; maxillary palpi minute, covered with ochreous and dark brown; labial palpi long, about three times to eye diameter, 1 st segment whitish, 2 nd segment laterally tinged with ochreous and dark brown scales. Body whitish. Forewing yellowish in ground color; basal part tinged with dark ochreous; antemedial line dark ochreous, medially incurved; postmedial line dark ochreous, weakly waved; central fascia dark ochreous, discal dot lunular, dark brown, gradually decreased in width from costa to dorsum; subtermen band-shaped, dark yellowish; termen broad dark brown band-shaped. Hindwing light blackish in ground color; postmedial line blackish, slanted; termen band-shaped with blackish scales. Male genitalia (from Munroe & Mutuura, 1968). Uncus tapering, narrowly rounded tip; vinculum narrow, with a dorsal carina on the mid-line; juxta small with short dorsal projections. Valva moderate width; costa straight, narrowly inflated, apex curved; fibula (=clasper) with pointed basal end and large scale patch, a ventral row of teeth long and decurved distally and the teeth long; sacculus with a setose bulge on dorsal margin basad of fibula. Aedeagus curved, strongly tapering distally, with a narrow patch of cornuti and a bundle of long deciduous ones. Female genitalia. Papillae anales narrow; posterior apophyses thin, long, about 1.5 times to 8 th segment; anterior apophyses thick, about the equal length of 8 th segment; ostium bursae simple, membranous; ductus bursae long, about three times of ostium bursae in length, twisted four times; corpus bursae large, ovate, laterally with a small sac, membranous appendix bursae, signum large fusiform with many minute spicules.

Distribution. South Korea, Japan, China, and Russian Far East.

DNA barcoding: One specimen from South Korea ( OK501199 ) was sequenced, and the genetic difference between P. orientalis and its European relative, P. pulveralis was 5.3%.

Remarks. The genus Psammotis comprises eight species worldwide and can be distinguished by the well-developed third labial palpomere, the distally straight costa of valva, the presence of appendix bursae on the ovate corpus bursae where the broad and rhombical signum is observed ( Mally et al., 2019). Psammotis feeds on the plants of Lamiaceae . In South Korea, the occurrence of P. pulveralis (NIBR, 2019) can be misidentification of P. orientalis based on the distribution.

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 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.