Identification of egg parasitoids of rice leafhoppers and planthoppers (Hemiptera: Cicadellidae and Delphacidae) of economic importance in Taiwan, part 1: Mymaridae (Hymenoptera)

Triapitsyn Serguei Vladimirovich,Shih Hsien-Tzung,Huang Shou-Horng,Tseng Mei-Jung 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.1

Fairyfly egg parasitoids (Hymenoptera: Mymaridae) of rice leafhoppers and planthoppers (Hemiptera: Cica dellidae and Delphacidae) known from Taiwan are identified taxonomically, keyed, and illustrated. Their host associations are determined by rearings using sentinel eggs of mainly four key pest species. The previously published records of such egg parasitoids in Taiwan are critically analyzed in the unfortunate absence of almost any voucher specimens. Three species of Mymaridae are shown to be the predominant egg parasitoids of one leafhopper and three planthopper major pests of rice in Taiwan: Anagrus (Anagrus) incarnatus Haliday of the green rice leafhopper Nephotettix cincticeps (Uhler) and the delphacids Laodelphax striatella (Fallén) (small brown planthopper), Nilaparvata lugens (Stål) (brown planthopper), and Sogatella furcifera (Horváth) (whitebacked planthopper), as well as Gonatocerus aegyptiacus Soyka and Mymar taprobanicum Ward of N. cincticeps. The zig-zag leafhopper Maiestas dorsalis (Motschulsky), which is also common in paddy fields, is newly recorded as a host for A. incarnatus, G. aegyptiacus, Lymaenon litoralis (Haliday), and M. taprobanicum. Additional new records of some other Mymaridae in Taiwan, mostly from the rice field agroecosystems, are indicated. Litus assamensis Rehmat and Anis, syn. nov. from India, is synonymized with L. sutil Triapitsyn and Berezovskiy from Thailand, which is also newly recorded from Taiwan.

Fairyfly egg parasitoids (Hymenoptera: Mymaridae) of the invasive lace bug Corythucha marmorata (Uhler) (Hemiptera: Tingidae) in Japan

Triapitsyn Serguei Vladimirovich,Yasuhara Yoshiaki,Adachi-Hagimori Tetsuya,Tsukada Morio 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.1

The fairyfly Anagrus (Anagrus) virginiae Triapitsyn and Puttler (Hymenoptera: Mymaridae) is identified as a principal egg parasitoid of the chrysanthemum lace bug Corythucha marmorata (Uhler) (Hemiptera: Tingidae) in Japan on Solidago altissima L., Solidago sp., and Bidens pilosa L. (Asteraceae), and on sweet potato, Ipomoea batatas (L.) Lamarck (Convolvulaceae). Both C. marmorata and Solidago spp. as well as Bidens pilosa are invasive in Japan, so it is very likely that A. virginiae was unintentionally introduced and established in the country either with or after the introduction of its insect host. Both sexes of A. virginiae are redescribed and illustrated with digital images based on Japanese specimens to facilitate their recognition, and an updated key to females of Anagrus Haliday species in Japan is given to include A. virginiae and the recently recorded leafhopper egg parasitoid A. (Anagrus) turpanicus Triapitsyn and Hu. In Japan, C. marmorata is a pest of eggplant, Solanum melongena L. (Solanaceae), pepino or sweet cucumber, Solanum muricatum Aiton, sweet potato, and other crops, so potential for classical biological control against this lace bug is discussed. One male specimen of another fairyfly, Eryth melus (Parallelaptera) sp., was also reared from an egg of C. marmorata, the first such record from this lace bug ho

Identification of egg parasitoids of rice leafhoppers and planthoppers (Hemiptera: Cicadellidae and Delphacidae) of economic importance in Taiwan, part 2: Trichogrammatidae (Hymenoptera)

Serguei Vladimirovich Triapitsyn,Hsien-Tzung Shih,Shou-Horng Huang 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.4

Trichogrammatid egg parasitoids (Hymenoptera: Trichogrammatidae) of rice leafhoppers and planthoppers (Hemiptera: Cicadellidae and Delphacidae) known from Taiwan are identified taxonomically and illustrated, and their host associations are determined by rearings using sentinel eggs of the key pest species. The previously published records of such egg parasitoids in Taiwan are critically analyzed in the unfortunate absence of almost any voucher specimens. Pseudoligosita nephotetticum (Mani) is shown to be the most common egg parasitoid of the two leafhopper and three planthopper pests of rice in Taiwan: the zig-zag leafhopper Maiestas dorsalis (Motschulsky) (a new host record), the green rice leafhopper Nephotettix cincticeps (Uhler), and the delphacids Laodelphax striatella (Fallén) (small brown planthopper), Nilaparvata lugens (Stål) (brown planthopper), and Sogatella furcifera (Horváth) (whitebacked planthopper). Paracentrobia (Brachistella) andoi (Ishii) syn. nov., originally described from Japan as Japania andoi Ishii, and Paracentrobia (Brachistella) garuda Subba Rao syn. nov. from Thailand are synonymized under Paracentrobia (Brachistella) bicolor (Girault) from northern Queensland, Australia; Pseudoligosita tachikawai (Yashiro) syn. nov., originally described as Oligosita tachikawai Yashiro from Japan, is synonymized under Pseudoligosita nephotetticum. Lectotypes are designated for Japania andoi and Oligosita shibuyae Ishii.

Revised molecular characterization of Gonatocerus cincticipitis Sahad (Hymenoptera: Mymaridae), an egg parasitoid of green rice leafhopper Nephotettix cincticeps (Uhler) (Hemiptera: Cicadellidae) in Japan

Triapitsyn Serguei Vladimirovich,Kusuhara Hiroki,Rugman-Jones Paul F.,Adachi-Hagimori Tetsuya 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.2

Gonatocerus cincticipitis Sahad (Hymenoptera: Mymaridae) is an egg parasitoid of the rice pest, green rice leaf hopper Nephotettix cincticeps (Uhler) (Hemiptera: Cicadellidae), in Japan and the Republic of Korea. Its molecular determination is reconsidered following the previous taxonomic misidentification, and its genetic separation from G. saipanensis (Doutt), a morphologically identical Gonatocerus sp. from Shimane Prefecture, Honshu Island in Japan, and other members of the Gonatocerus fuscicornis (Walker) species complex is demonstrated and dis cussed. DNA was successfully extracted from reared specimens of G. cincticipitis from Honshu and Kyushu islands in Japan, and the standard barcoding section of the mitochondrial cytochrome oxidase subunit 1 gene (COI) as well as two regions of nuclear ribosomal RNA, the D2 domain of 28S (28S-D2) and the internal transcribed spacer 2 (ITS2), were amplified and sequenced for genetic analyses. Both sexes of G. cincticipitis are redescribed and illustrated to facilitate their recognition. An updated morphological key to females of the Palaearctic species of Gonatocerus Nees ab Esenbeck is also provided.

Egg parasitoids (Hymenoptera: Mymaridae and Trichogrammatidae) of Kolla paulula (Walker) (Hemiptera: Cicadellidae) in Taiwan

Serguei Vladimirovich Triapitsyn,Hsien-Tzung Shih 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.4

Pseudoligosita nephotetticum (Mani) (Hymenoptera: Trichogrammatidae) and Gonatocerus (Cosmocomoidea) sp. (Hymenoptera: Mymaridae) have been identified for the first time as egg parasitoids of the sharpshooter leafhopperKolla paulula (Walker) (Hemiptera: Cicadellidae: Cicadellinae: Cicadellini) in Taiwan. K. paulula hasbeen recently identified as a candidate vector of the phytopathogenic bacterium Xylella fastidiosa, the causativeagent of Pierce's disease of grapes and similar diseases of other affected plants in Taiwan, and thus has becomeof particular economic importance. Also provided is a summary of the known records of egg parasitoids(Mymaridae and Trichogrammatidae) of other leafhoppers fromthe tribe Cicadellini in theworld, as well as taxonomicnotes on P. nephotetticum.

Egg parasitoids (Hymenoptera: Mymaridae) of Amrasca biguttula (Ishida) (Hemiptera: Cicadellidae) on Okinawa Island, a pest of okra in Japan

Tetsuya Adachi-Hagimori,Serguei Vladimirovich Triapitsyn,Takumi Uesato 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.3

The fairyfly Anagrus (Anagrus) japonicus Sahad (Hymenoptera: Mymaridae) is identified for the first time as an egg parasitoid of the okra leafhopper Amrasca (Sundapteryx) biguttula (Ishida) (Hemiptera: Cicadellidae) on Okinawa Island, Japan. Amrasca biguttula is a serious pest of okra, Abelmoschus esculentus (L.) Moench (Malvaceae), both in Okinawa and Bonin Islands. Female of A. japonicus is redescribed, and its previously unknown male is described, based on the reared specimens from Okinawa. Prior to this study, host associations of A. japonicus were unknown. Another species of Mymaridae, Arescon enocki (Subba Rao and Kaur), also emerged from eggs of A. biguttula on okra in Okinawa, albeit in much smaller numbers. Introduction The okra leafhopper (Fig. 1), Amrasca (Sundapteryx) biguttula (Ishida) (Hemiptera: Cicadellidae: Typhlocybinae), is also known by other common names, e.g., [Indian] cotton leafhopper and cotton jassid. Its distribution range includes the Oriental region, Micronesia, and parts of the Central (Afghanistan) and Eastern Palaearctic region such as Japan and some provinces of mainland China (Xu et al., 2017). Amrasca biguttula is an economic pest of cotton, particularly in India and Pakistan, and also of okra and some other agricultural crops throughout its distribution range. In Japan, A. biguttula is known from Honshu Island as far North as 34.808°N 139.93°E (Dmitriev, 2019), Okinawa Island (Ishikawa and Takahata, 2019) and some other islands of the Ryukyu Islands and also from Bonin (Ogasawara) Islands (Ono et al., 2006) where it is considered an economically important pest of okra, Abelmoschus esculentus (L.) Moench (Malvaceae). In Okinawa it is also a known pest of pepino, or sweet cucumber, Solanum muricatum Aiton (Solanaceae) (Ishikawa and Takahata, 2019). Egg parasitoids of the okra leafhopper were unknown in Japan prior to this study, and elsewhere only a few had been reported. Subba Rao (1966) first recorded two fairyfly (Hymenoptera: Mymaridae) egg parasitoids of the leafhopper Empoasca devastans Distant, a junior synonym of A. biguttula on cotton in India: Arescon enocki (Subba Rao and Kaur) [as Neurotes enocki Subba Rao and Kaur] and Stethynium empoascae Subba Rao;

Egg parasitoids (Hymenoptera: Mymaridae and Trichogrammatidae) of okra leafhopper, Amrasca biguttula (Ishida) (Hemiptera: Cicadellidae), in southern Japan

Adachi-Hagimori Tetsuya,Triapitsyn Serguei Vladimirovich,Rugman-Jones Paul F. 한국응용곤충학회 2023 Journal of Asia-Pacific Entomology Vol.26 No.1

The okra leafhopper, Amrasca (Sundapteryx) biguttula (Ishida) (Hemiptera: Cicadellidae), is an economically important pest of okra, Abelmoschus esculentus (L.) Moench (Malvaceae), in Japan. During 2019 and 2022 surveys for its egg parasitoids (Hymenoptera) were conducted on Kyushu and Ryukyu islands in southern Japan. Five species of Mymaridae, Anagrus (Anagrus)?atomus (L.), A. (A.) japonicus Sahad, A. (A.) turpanicus Triapitsyn and Hu, Arescon enocki (Subba Rao and Kaur), and Stethynium empoascae Subba Rao, as well as one of Trichog rammatidae, Pseudoligosita nephotetticum (Mani), were recorded from eggs of A. biguttula on okra in Japan. Of these, A. (A.) turpanicus, identified using a combination of molecular and morphological methods, is newly recorded from Japan; A. (A.)?atomus, A. (A.) turpanicus and P. nephotetticum are for the first time reported from eggs of okra leafhopper.

Four new species of Anagrus Haliday (Hymenoptera: Mymaridae) from India, with a key to Indian species

Sankararaman Hariharakrishnan,Manickavasagam Sagadai,Triapitsyn Serguei Vladimirovich 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.1

Four new species of Anagrus (Anagrus) Haliday (Hymenoptera: Mymaridae) are described from India: A. (Anagrus) karnatakus Triapitsyn sp. n., A. (Anagrus) kolhapurensis Manickavasagam & Sankararaman sp. n., A. (Anagrus) latus Manickavasagam & Sankararaman sp. n. and A. (Anagrus) sujathae Manickavasagam & Sankar araman sp. n. A key to females of the 15 described and one undescribed species of Anagrus known from India is provided. www.zoobank.org/urn:lsid:zoobank.org:pub:99ED388D-BE3E-4FBA-A383-3482D96DA42F.