In Korea, 89 species, belonging to 24 genera of the family Gracillariidae have been reported to date (Park, 1983;Byun et al., 2009;Shin et al., 2015;Kim and Byun, 2016, 2017, 2019, 2022a, b;Kim et al., 2022a, b, c, d;Lee et al., 2017;Lee and Jeun, 2022;Park and Lee, 2021). Of them, 28 species belonging to 4 genera of the subfamily Gracillarinae have been reported from Korea to date (Park, 1983;Byun et al., 2009;Lee and June, 2022;Park and Lee, 2021;Kim et al., 2022b).
AristaeaMeyrick, 1907 is one of the smaller genera in the family Gracillariidae, comprising only 15 species worldwide (De Prins and De Prins, 2006-2022).
It was established by Meyrick (1907), based on the type species, Aristaea periphanesMeyrick, 1907. The members of the genus are distributed mainly in the Australian region, Palaearctic region, Ethiopian region and partly in the Oriental region. Most of the larvae of the genus are leaf miners of several plant families, such as Asteraceae, Verbenacea and Myrtaceae (De Prins and De Prins, 2006-2022).
It has not been known in Korea to date. During the course of the intensive study on the family Gracillariidae, we found the genus Aristaea with two species, A. bathracma (Meyrick, 1912) and A. pavoniella (Zeller, 1847), for the first time from Korea. The aim of the present study is to report the genus Aristaea with two newly recorded species in Korea.
Materials and Methods
Material examined in the present study is deposited in the Systematic Entomology Laboratory, Hannam University, Daejeon, Korea (HNSUEL). Male and female genitalia were dissected and mounted with Euparal solution, according to Holloway et al. (1987). Photos of the adult were taken using a digital camera (Canon EOS 600D, Canon Inc., Ota, Tokyo, Japan). Images of genitalia were taken using a digital camera attached to the microscope, LEICA M205C (Ⓒ Leica Microsystems, Wetzlar, Hesse, Germany).
Abbreviations in this study for locality in Korea are as follows: IC (Incheon), GG (Gyeonggi-do), GW (Gangwon-do), JN (Jeollanam-do), TL (type locality), TD (type depository).
Also, the specimen depositories in this study were examined from the following collections:
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HNUSEL Hannam University, Korea
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KNAE Entomological Collection, Korea National Arboretum, Korea
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TMSA Transvaal Museum, Pretoria, South Africa
Systematic Accounts
Order Lepidoptera Linnaeus, 1758
Family Gracillariidae Stainton, 1854
Genus AristaeaMeyrick, 1907
AristaeaMeyrick, 1907: 49, 52.
Type species: Aristaea periphanesMeyrick, 1907.
Diagnosis. The genus AristaeaMeyrick, 1907 is distinguished by the broader apex of forewing than other genera of Gracillariinae with lanceolate-shaped apex in forewing. Also, male genitalia similar to Caloptilia in shape of valva, tegumen and vinculum, however can be distinguished with an apical spine of aedeagus. Also, female genitalia of Aristaea with two long signa which occupying almost the entire or 2/3 of corpus bursae.
Distribution. Australian, Palaearctic, Ethiopian, Oriental regions.
Remarks. The genus Aristaea has been reported with 15 described species in the world. In this study, this genus is reported for the first time from Korea with 2 newly recorded species.
Key to the species of the genus Aristaea in Korea
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1. White fascia of forewing narrower than intervals; male genitalia vinculum longer than tegumen and apical margin straight ······························· Aristaea bathracma
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- White fascia of forewing broader than intervals; male genitalia vinculum as long as tegumen and apical margin round ························································ A. pavoniella
Aristaea bathracma (Meyrick, 1912) 쑥부쟁이가는나방 (신칭) (Fig. 1A,1B,1C)
Parectopa bathracmaMeyrick, 1912: 25. TL: South Africa. TD: TMSA (Holotype; Paratypes).
Aristaea asterisKumata, 1977: 20-23.
Redescription. Adult (Fig. 1A). Wingspan 8.5mm. Head white with silvery gray median striae; frons and face white; maxillary palpus shiny white with a dorsum fuscous band on first segment; labial palpus white with lateral fuscous spots on each segment; antenna fuscous; scape fuscous dorsally and white ventrally. Thorax goldish ochreous with two narrow striae; legs white and fuscous; fore coxa white with apical fuscous band and median part mixed with tiny fuscous spots; fore femur and tibia fuscous with a white basal spot on inner side of tibia; fore tarsus white with four fuscous bands, fuscous only laterally from base to first band; middle femur fuscous with a subapical white spot; middle tibia and tarsus with a total of five fuscous bands at same intervals.
Forewing ground color goldish ochreous with narrow white fasciae and streak with black edges; a basal streak between wing fold and dorsal margin extending 1/3 to base and broader at apically; first costal fascia extends along costal margin at 1/3 to base, oblique to outward and meets or leaves an extreme gap with first dorsal fascia; second costal fascia at 2/3 to base, rather short, down to dorsal margin nearly longitudinally and then extends to apex horizontally; first dorsal fascia at a half of forewing, short and stout, and extend to wing fold; second dorsal fascia at 3/4 to base and somewhat rectangular; short striae on apex with a small white dorsal spot.
Male genitalia (Fig. 1B). Tegumen narrow and clavate. Valva slightly rectangular and muscle-shaped, narrowed at base, apical margin rather straight, basal dorsum slightly curved to inner side and base to a half of ventral margin straight; long and slender scales along apical margin to ventral margin. Vinculum narrow, extremely elongated as long as 2 times longer than tegumen and apical round. Juxta sclerotized and broad. Aedeagus 2 times longer than vinculum, slender, bar-shaped with acute apical, apical bifurcated with two long spines and many of minute spinules on spines.
Female genitalia (Fig. 1C). Papillae anales moderate with scales; base of apophyses posteriores broad and almost 2 times longer than anteriores. Ostium bursae with a sclerotized flap soaring to caudally. Ductus bursae sclerotized except for the rest 1/3 part near corpus bursae and straight to membranous part. Corpus bursae somewhat large, elongated and membranous with two long signa; signa begin at just below ductus bursae, extend to 2/3 of corpus bursae, flap at lateral side and narrowed apoically.
Material examined. [JN] 1♂, Mt. Aengmu, Suncheon-si, 10 vii 2019 (leg. BK Byun), gen. slide no. HNUSEL-5670-coll. HNUSEL; 1♀, Hwaheung-ri, Is. Wan-do, 31 v 2015 (leg. BS Park, SM Na, DJ Lee), gen. slide no. HNUSEL-5362-coll. HNUSEL.
Distribution. Korea (new record), China, Japan, Russia, Thailand, Madagascar, Mozambique, Réunion, South Africa, Uganda.
Host plants.Aster ageratoides Turcz. var. ovatus Nakai [Compositae] in Japan (Kumata, 1977;De Prins and Prins, 2006-2022).
Aristaea pavoniella (Zeller, 1847) 국화가는나방 (신칭) (Fig. 2A, 2B, 2C)
Gracillaria (Euspilopteryx) pavoniellaZeller, 1847: 362-363. TL: Vienna, Austria. TD: Unknown.
Euspilapteryx pavoniella: Herrich-Schäffer, 1855: 293.
Gracilaria pavoniella: Stainton, 1864: 184.
Micrurapteryx pavoniella: Spuler, 1910: 409.
Parectopa pavoniella: Meyrick, 1912: 20.
Parectopa latisectaMeyrick, 1922: 564.
Aristaea pavoniellaKumata, 1977: 13-20.
Redescription. Adult (Fig. 2A). Wingspan 8.0-10mm. Head white tinged with light ochreous and smooth; frons and face shiny white; maxillary palpus dark brown mixed with white scales and rough; labial palpus white dorsally with a tuft of brown and white scales ventrally; antenna and scape fuscous. Thorax ochreous with two thick striae; legs white and dark brown; fore coxa white only on median with apical and basal brown band; fore femur and tibia brown; fore tarsus white with four fuscous bands almost at same intervals.
Forewing ground color orange ochreous with distinctive white fasciae and streak with black edges; a basal streak near wing fold extending 1/3 to base and slightly upcurved apically; first costal fascia begins at wing base, extends along costal margin at 1/4 to base, oblique to outward and narrowed apically; second costal fascia just next to first one, basal somewhat rectangular and curved to outward smoothly; two of dorsal fasciae more blunt than costal one; a small ‘u’ shaped white marking at 3/4 to base, occupying a half of forewing, meet two costal fasciae at middle and costal fasciae oblique opposite each other; a small white dorsal spot with a blackish edge only on upper side; small white striae on apical margin. Hindwing lanceolate and light silver.
Male genitalia (Fig. 2B). Tegumen as long as vinculum and ovate. Valva upcurved and apical margin round; long and slender scales along apical margin to ventral margin except for basal part, some minute saw-like setae along apical margin. Vinculum narrow, elongated and apex blunt. Juxta slightly sclerotized and ‘u’ shaped. Aedeagus bifurcated on apex with fine and long spines, tubular, narrow and slender without cornuti.
Female genitalia (Fig. 2C). Papillae anales long with scales; apophyses posteriores 2 times longer than anteriores. Ostium bursae 1/2 of papillae anales in width; antrum sclerotized and elongated as long as 1/2 of apophyses posteriores. Ductus bursae sclerotized at half caudally; a small cervix bursae just above neck of corpus bursae. Corpus bursae ellipsoidal form and membranous with two long signa; signa occupying almost entire bursae, begin near the end of ductus bursae, long and slender and lie parallel each other.
Material examined. [IC] 1♂, Mt. Horyonggloksan, Muido, 26 v 2011 (leg. SY Park & JS Lim), gen. slide no. HNUSEL- 5364-coll. KNAE; [GG] 1♀, Lake Yuklim, Gwangneung, 11 v 2016 (leg. Park, Choi, Kim, Nam, Shin, Bae), gen. slide no. HNUSEL-5367-coll. KNAE; [GW] 1♂, Jiam-ri, Chwuncheon, 9 v 1999, gen. slide no. HNUSEL-5365-coll. HNUSEL.
Distribution. Korea (new record), China, Japan, Russia, Austria, Czech Republic, Germany, Hungary, Italy, Poland, Slovakia, Switzerland.
Host plants. Aster ageratoides Turcz. var. ovatus Nakai, A. glehni Fr. Schm., A. scaber Thunb. [Asteraceae] in Japan (Kuroko, 1958;Kumata, 1977;De Prins and De Prins, 2006-2022). A. ageratoides Turcz., A. amellus L., A. bellidiastrum (L.) Scop., A. glehni Fr. Schm., A. scaber Thunb., A. sp. [Asteraceae] in Russia (Kuznetzov, 1981;Dubatolov and Kosterin, 2000;De Prins and De Prins, 2006-2022). A. amellus L., A. bellidiastrum (L.) Scop., [Asteraceae] in Austria (Klimesch 1951;Kusdas and Reichl 1990;De Prins and De Prins, 2006-2022). A. amellus L. [Asteraceae] in Czech Republic (Laštuvka et al., 1992;De Prins and De Prins, 2006-2022). A. sp. [Asteraceae] in Germany (Eckstein, 1933;De Prins and De Prins, 2006-2022). A. amellus L. [Asteraceae] in Hungary (Szabóky, 2013;De Prins and De Prins, 2006-2022). A. amellus L. [Asteraceae] in Italy (Hartig, 1939;De Prins and De Prins, 2006-2022). A. alpinus L. [Asteraceae] in Poland (Baran, 1996;De Prins and De Prins, 2006-2022). A. amellus L., A. bellidiastrum (L.) Scop. [Asteraceae] in Switzerland (Frey, 1855;De Prins and De Prins, 2006-2022).