DOLBINA TANCREI Staudinger, 1887 -- Amur grizzled hawkmoth

Female Dolbina tancrei. Photo: © NHMUK Male Dolbina tancrei. Photo: © NHMUK

TAXONOMY

Dolbina tancrei Staudinger, 1887, in Romanoff (ed.), Mém. Lépid. 3: 155. Type locality: [Russia,] western Amur-region [Amurskaya], near Blagoweschtschensk [Blagoveshchensk], "Rückbeil"; [Russia,] eastern Amur-region [Amurskaya/Khabarovskiy Kray] (Ussuri?).

Synonym. Dolbina curvata Matsumura, 1921.

Synonym. Dolbina lateralis Matsumura, 1921.

Note. To maintain current usage, the male must be selected as lectotype; the female syntype is also a syntype of Dolbina exacta.


ADULT DESCRIPTION AND VARIATION

Wingspan: 50--82mm. Generally recognisable by the wings and body being infused with green, but this is not totally reliable as some Dolbina exacta may be greener than some Dolbina tancrei. The most reliable character separating the two is the presence of large black patches on the underside of the abdomen, nearly as large as in Dolbina inexacta, but absent from Dolbina exacta. Abdomen and wing undersides brownish grey. Abdomen underside with large black mesial patches. Pilifer with a few bristles, and with long, white hair scales, unlike Dolbina inexacta.

Male genitalia similar to Dolbina exacta, but harpe with the 2 proximal lobes farther apart. In the female genitalia, ostial plate with processes wider apart than in Dolbina inexacta, much less slender than in Dolbina exacta.


Disturbed Dolbina tancrei, Japan. Photo: © Kenichiro Nakao. Resting Dolbina tancrei, Japan. Photo: © Kenichiro Nakao. Disturbed Dolbina tancrei, Japan. Photo: © Izumi Kimura. Male Dolbina tancrei, Livadia, near Anisimovka, Primorskiy Kray, Russian Far East, 16.07.2014. Photo: © Evgenij Komarov. Female Dolbina tancrei, Anisimovka, Scotovsky District, Primorskiy Kray, Russian Far East. Photo: © Jean Haxaire.

ADULT BIOLOGY


FLIGHT-TIME

North Korea: vii (Baekdu-san). Japan: 28.ii-28.iii (Ryukyu Archipelago); 28.v (Honshu); vi (Honshu; Hokkaido); 6.vii-6.ix (Honshu); 16.vii-20.viii (Hokkaido). Russia: 30.v-20.viii (Khabarovskiy Kray, Khabarovsk); 30.vi-16.vii (Primorskiy Kray, Khasan); 8-23.vii (Kurile Islands); 1-2.viii (Khabarovskiy Kray, Botchinskii Nature Reserve); 16.viii (Primorskiy Kray, Khasan); 20.viii (Amurskaya); 1-4.ix (Primorskiy Kray, Khasan).

In northern China there are two generations per year, with adults flying in May and September (Yang, 1978). At Khabarovsk there are also two generations, in May/June and August (Dubatolov, pers. comm. 2010).

Park et al. (1999) give late May until late August as the flight period in Korea.


EARLY STAGES

OVUM: 2.3 x 1.9mm.

Eggs of Dolbina tancrei, Japan. Photo: © Inoue Takashi.

LARVA: Full-fed 64--70mm.

Generally feeds at about 1-4m from the ground, with larger larvae hanging suspended from the petiole of a leaf. Young larvae rest along the leaf underside mid-rib, nibbling that same leaf from the tip down. Not a very active species, although larger larvae will move to a new location most nights.


First instar larva of Dolbina tancrei, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway. Early second instar larva of Dolbina tancrei, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway. Third instar larva of Dolbina tancrei, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway. Fourth instar blue-grey larva of Dolbina tancrei, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway. Full-grown apple-green larva of Dolbina tancrei, Chengde, Hebei, China. Photo: © Tony Pittaway Full-grown blue-grey larva of Dolbina tancrei with short horn, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway. Full-grown blotched larva of Dolbina tancrei, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Gary Saunders. Full-grown blotched larva of Dolbina tancrei with secondary horn, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway. Full-grown blotched larva of Dolbina tancrei, Yazu, Tottori Prefecture, Honshu, Japan. Photo: © Tony Pittaway.

PUPA: 41-44mm.

Pupa of  Dolbina tancrei, Anisimovka, Scotovsky District, Primorskiy Kray, Russian Far East. Photo: © Jean Haxaire. Pupa of  Dolbina tancrei, Anisimovka, Scotovsky District, Primorskiy Kray, Russian Far East. Photo: © Jean Haxaire. Pupa of  Dolbina tancrei, Anisimovka, Scotovsky District, Primorskiy Kray, Russian Far East. Photo: © Jean Haxaire.

Larval hostplants. Recorded in China (Chengde) from Fraxinus (Pittaway, pers. obs. 2003). Recorded in Primorskiy Kray, Russia, on Fraxinus and Syringa (Derzhavets, 1984); in Amurskaya from Syringa reticulata subsp. amurensis (Streltzov, Osipov & Malikova, 2003).

Recorded in Korea on Ligustrum japonicum, L. obtusifolium and Fraxinus rhynchophylla (Park et al., 1999).

In Japan, recorded from Ligustrum japonicum, L. obtusifolium, Olea europaea and Osmanthus fragrans.


PARASITOIDS

Tachinidae: Winthemia angusta Shima, Chao & Zhang, Exorista sorbillans (Weidemann).


LOCAL DISTRIBUTION

China: Heilongjiang (Lesser Khingan Mountains, Fengling Forest); Hebei (Chengde); Beijing.

North Korea: North Hamgyong Prov. (Baekdu-san, 2500m; Gyungsung).

South Korea: Baengnyeong-do & Daecheong-do; Seoul (Nam-san); Kyonggi Prov. (Suwon; Gwangleung; Cheongpyong; Yongmun-san; Soyo-san; Myungji-san); Kangwon Prov. (Gwangduk-san; Samak-san; Daeryong-san; Dosol-san; Seolak-san; Sogumgang; Gyebang-san; Hoengsung; Taebek-san; Chuncheon; Bongmyung-ri; Younhwa-san; Odae-san; Yaksu-san; Jungseon; Hongcheon; Chiak-san); North Chungchong Prov. (Songni-san; Chupungryung; Jecheon; Wolak-san); South Chungchong Prov. (Gyeryong-san); North Cholla Prov. (Jiri-san; Daedun-san; Namwon); South Cholla Prov. (Baekyang Temple; Wolchul-san; Gwangyang; Gurye); North Kyongsang Prov. (Palgong-san; Sobaek-san; Juwang-san; Mungyungsaejae; Uiseong); South Kyongsang Prov. (Pusan; Gudeok-san; Namhae-do; Geoje-do; Milyang; Sancheong; Ulsan; Uiryong; Hadong; Hamyang); Cheju Prov. (Cheju-do; Halla-san; Sunheul; Mokseokwon; Gwaneum Temple; Napeup-ri; Ora-dong; Andeok; Youngsil; Hare-ri; Uygui-ri; Seoguipo; Topyung; Suakbong).

Japan: Hokkaido (Hakodate; Sapporo; Kushiro; Tokachi; Inasato); Honshu (Kawaguchi; Tokyo; Nashimoto; Mikaboyama, 750m; Nii-jima; Gozaishodake; Shinbo; Iruma; Kiyosato, 1300m); Shikoku; Kyushu; Ryukyu Archipelago (Ishigaki).

Russia: Amurskaya (Blagoveshchensk; Uril area; Kirov); Yevreyskaya (Bastak; Obluch'e); Khabarovskiy Kray (Khabarovsk; Komsomolsk-na-Amure; Pivan; Kiselevka; Slavyanka; Botchinskii Nature Reserve); Primorskiy Kray (Khasan; Ussuriysk; Narva; Novovladimirovka; Vladivostok; Primor'e; Kirovskiy; near Zanadvorovka; Livadia, near Anisimovka); Kurile Islands (Kunashir).


GLOBAL DISTRIBUTION

The Russian Far East, northeastern China, the Korean Peninsula and Japan (Komatsu & Inoko, 2000).


Confirmed distribution of Dolbina tancrei. Map: © NHMUK.

BIOGEOGRAPHICAL AFFILIATION

Holarctic; eastern Palaearctic region. Pleistocene refuge: Polycentric -- Japanese and Sinopacific refugia.



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© A.R. Pittaway & I.J. Kitching (The Natural History Museum, London)