HYLES GALLII (von Rottemburg, 1775) -- Bedstraw hawkmoth

Female Hyles gallii. Photo: © NHMUK Male Hyles gallii. Photo: © NHMUK

TAXONOMY

Sphinx gallii von Rottemburg, 1775, Naturforscher, Halle 7: 107. Type locality: Germany.

Synonym. Sphinx gallii von Rottemburg, 1775.

Synonym. Sphinx galli Denis & Schiffermüller, 1775.

Synonym. Sphinx epilobii Harris, 1833.

Synonym. Deilephila intermedia Kirby, 1837, Fauna Boreali-Americana 4: 302.

Synonym. Deilephila chamaenerii Harris, 1839.

Synonym. Deilephila oxybaphi Clemens, 1859.

Synonym. Deilephila canadensis Guenée, 1868.

Synonym. Deilephila galii Kirby, 1892.

Synonym. Celerio gallii grisea Tutt, 1904.

Synonym. Celerio gallii incompleta Tutt, 1904.

Synonym. Celerio gallii pallida Tutt, 1904.

Synonym. Celerio gallii stricta Tutt, 1904.

Synonym. Celerio galii Kuznetsova, 1906.

Synonym. Deilephila gallii dentata Gschwandner, 1912.

Synonym. Deilephila gallii lutea Gschwandner, 1912.

Synonym. Deilephila gallii maculifera Klemensiewicz, 1912.

Synonym. Deilephila gallii cuspidata Fritsch, 1916.

Synonym. Celerio gallii flavescens Closs, 1920.

Synonym. Celerio gallii scholzi Stephan, 1924.

Synonym. Celerio gallii chishimana Matsumura, 1929, Insecta matsum. 3: 166.

Synonym. Celerio gallii sachaliensis Matsumura, 1929, Insecta matsum. 3: 166.

Synonym. Celerio gallii grisescens Bandermann, 1932.

Synonym. Celerio gallii testacea (Wladasch, 1933).

Synonym. Celerio gallii postrufescens Lempke, 1959.

Synonym. Celerio galii nepalensis Daniel, 1961, Veröff. zool. Staatssamml. Münch. 6: 160.

Synonym. Celerio gallii heliophila Eichler, 1971.

Synonym. Celerio galii [sic] tibetanica Eichler, 1971, Ent. Abh. Mus. Tierk. Dresden 38: 315. Type locality: [China,] NW Tibet [Xizang], Lanak-la, 5400m.


ADULT DESCRIPTION AND VARIATION

Wingspan: 65--85mm. Forewing costal area brown, sharply denned; median area yellowish; marginal band grey. Hindwing yellow, with a tinge of pink; a red patch behind middle, the red colour often extending along the black basal area and the black submarginal band. Underside with no trace of red. First protarsal segment with the external row of spines complete, double at base, the spines little prolonged. Pulvillus present. Antenna white above only at end. Tegula without white upper fringe; abdominal side-patches as in Hyles nervosa, but dorsum of abdomen with a white spot on each segment, and white fringes of tergites broken on dorsum (Bell & Scott, 1937).

The well-defined, pale oblique median stripe on the forewing distinguishes Hyles gallii from other similar members of the genus. There is very little variation: in f. grisea Tutt, the normally olive brown forewing areas are greyish and the red is absent from the hindwing discal band; in f. pallida Tutt, the forewing median stripe is white instead of yellowish.

Populations from more arid regions tend to be paler in colour, those from cooler and wetter areas are darker. As in Hyles nicaea sheljuzkoi (Dublitzky, 1928) and Hyles hippophaes bienerti (Staudinger, 1874), many individuals from Kashmir and the Pamirs are much larger and paler than is normal.


Female Hyles gallii, Finland. Photo: © Tony Pittaway

ADULT BIOLOGY

Frequents rough common-land, roadside verges, meadow edges and, especially, clear-felled areas in mountain forests where Epilobium and Galium are present.

A strong flyer, it becomes active at dusk and again at dawn, when it searches for flowers from which it feeds avidly. Pairing rarely takes place before early morning and lasts approximately two hours. After extra feeding, females commence egg-laying one or two days later, continuing to do so for up to ten days. Both sexes are attracted to light.


FLIGHT-TIME

China: iv (Shanghai); v-vii (Yining/Gulja); 5.v-2.vi (Yanqing); vi (Xizang/Tibet, 3300-4500m); 20.vi-15.vii (Shihezi). North Korea: vii (North Hamgyong Prov.). South Korea: viii (South Cholla Prov.). Japan: 18.vi (Honshu); 6.vi-5.ix (Hokkaido). Mongolia: 9-10.vi (Hovd Province); 1-27.vii (Bayan-Ölgiy Province; Hovd Province; Gov'-Altai Province). Russia: 21.v-vii (Siberia); 25.v-25.vi (Khabarovskiy Kray); vi-vii (Primorskiy Kray); 1.vii (Magadan Oblast); 10-11.vii (Khabarovskiy Kray, Botchinskii Nature Reserve); 19-20.vii (Khabarovskiy Kray; East Yakutia); vii (Altai); viii (Altai); 10.viii-2.ix (Khabarovskiy Kray); 3-9.ix (Primorskiy Kray).

In northeastern China, there are several generations a year and adults fly between April and September (Yang, 1978). In Xizang/Tibet and Qinghai, adults fly in May and July (Chu & Wang, 1982).

Univoltine in Siberia during late June and July. Although Hyles gallii generally flies in July, in some years individuals can be found as early as mid June and as late as mid August. However, in some warm years there are two broods at Khabarovsk (Dubatolov, pers. comm. 2010).


EARLY STAGES

OVUM: Greenish-blue, almost sperical (1.0 x 1.1mm), shiny and smooth, with a depression dorsally. Deposited on the leaves of the hostplant or sometimes, as in the case of Galium, on the flowers, with up to four or five per plant.


Eggs of Hyles gallii, Finland. Photo: © Tony Pittaway

LARVA: Full-fed 75--90mm. Polymorphic: one form mainly black. Shape as in others of the genus; horn of medium length, down-curved.

Newly hatched, the 3--4mm-long larva is clear green with a number of yellow longitudinal lines. With growth, the green usually darkens to dark olive (or sometimes brown or black) and all lines except the dorso-lateral fade. This line gradually breaks up, to be replaced in the final instar by a row of startling, yellow or reddish eye-spots. The ventral surface in nearly all individuals is pinkish, and the head and horn red. In black larvae, both ventral and dorsal surfaces are of the same colour and the reduced eye-spots may be red. All colour forms bear small yellow spots laterally and ventro-laterally, which may be extensive or barely visible.

Initially, it feeds during the day and night, resting at intervals along the midrib under a leaf; when larger, larvae tend to retire low down on a plant by day, crawling up at dusk to feed. However, during wet weather fully-grown individuals may be seen in the daytime. The number of larvae varies greatly from year to year, perhaps due to the weather or to the high rate of parasitism.


4th instar green form larva of Hyles gallii. Photo: © Tony Pittaway. Final instar brown form larva of Hyles gallii. Photo: © Tony Pittaway.

PUPA: 40--45mm. Colour of head, thorax and wing-case yellowish brown with darker vermiculate markings; abdomen reddish brown; spiracles and cremaster black. Very similar to that of Hyles euphorbiae, although those produced by black larvae often have black wings and heavy black speckling on the abdomen. Tongue-case not prominent; antenna longer than fore leg, reaching middle of wing-case; a small coxal piece. Surface dull and smooth. Cremaster large, bent towards the venter. Encased in a loosely spun silk net amongst ground litter. Those formed before mid-July usually hatch the same year, giving rise to a second generation. Overwinters as pupa.


Pupa of Hyles gallii, Finland. Photo: © Tony Pittaway. Pupa of Hyles gallii. Image: Mell, 1922b

Larval hostplants. Unknown in China, but elsewhere feeds mainly on Rubiaceae and Onagraceae, especially Galium and Epilobium. There are also records from Acalypha, Betula, Euphorbia, Geranium, Impatiens, Malus, Plantago, Portulaca, Rosa, Rumex, Salix, Spiraea, Syringa and Vitis. Recorded on Chenopodium album and Galium in Mongolia (Zagorinskiy, Gorbunov & Puntsagdulam, 2010), and Galium verum var. asiaticum and Epilobium angustifolium in Korea (Park et al., 1999).


PARASITOIDS

Unknown for China.


LOCAL DISTRIBUTION

China: Xinjiang (Shihezi; Ürümqi; Yining/Gulja); Nei Mongol (Ergun Youqi; Zalantun/Butha Qi); Heilongjiang; Jilin; Liaoning; Hebei; Beijing (Yanqing); Shandong; Shaanxi; Qinghai; Gansu; Shanghai; ?Zhejiang; ?Yunnan; southern Xizang/Tibet (Arun Valley; ??Cho Dzong; Lhasa; Lung Xian, 3100m; Nyalam, 2250-4000m; Nyingchi, Namjagbarwa area, 3050m; Qamdo; Rinbung, 3900m; Xigazê, 3836m; Yi'ong, 2700m) (Wang, 1988).

Mongolia: Bayan-Ölgiy Prov. (Kobdo River valley, 20km SW Tsengel, 1900-2200m (48°49'N 88°59'E); Kara-Irtys basin, middle stream of Elt river, 2100-2300m; Khuraj-Modny-am (48°15'N 88°54'E)); Hovd Prov. (Bulgan River basin, Dod-Naryjn river valley, 1500-1700m; Bulgan River basin, Bayan river valley, Arshantyn-Nuruu Mts., Ulyastajn-Sala river, 1900m (46°21'N 91°08'E); Shurag River valley, near Erdene-Buren village); Gov'-Altai Prov. (Mongolian Altai Mts., Hara-Adzragyn-Nuru Mts., Najtvaryn-Sajr river valley, 1700-2000m, (45°52'N 95°30'E); Mongolian Altai Mts., Khasgt-Khairkhan Mts., 17km SSW Zhargalan, 2500-2900 m (46°48'N 95°49'E)).

North Korea: North Hamgyong Prov. (Gyungsung).

South Korea: Kyonggi Prov. (Suwon); South Cholla Prov. (Gwangju). (Park et al. (1999) consider this species to be rare in Korea.)

Japan: Hokkaido (Kutchan); Honshu (Mt. Yahiko, Niigata); Tsushima.

Russia: Altai (Ust'-Ulagan; Yailyu; Gorno-Altaisk; Cherga; Barnaul; Krasnoshchekovo; Klyuchi); Siberia (Tomsk; Krutoyarskiy; Alchedat; Kayly; Ordynskoe; Chingisy; Kolomino; Kazurovo; Alaevo; Korolevka; Novosibirsk; Krasnoyarsk; Kharat); Tuva ASSR (Turan; Boyarovka); Yakutia (Lensk; Olekminsk; Sinsk; Yakutsk; Amga; Borogontsy; Oymyakon; Suntar-Khayata Mts. (66°07-10'N, 139°20-30'E)); Buryatia (Kyachta; Baikalskii Nature Reserve; Nizhneangarsk; Mulustui; Zakamensk; Mishikha (Baikalskii Nature Reserve); Atsula; Deben; Beloozersk; Ulan-Ude; Maiskii; Olso; Onokhoy village); Transbaikalia (Nizhnii Tsasuchei; Kuku-Khadan (Torei Lakes, Daurskii Nature Reserve); Bulum (Torei Lakes, Daurskii Nature Reserve); Argunsk; Lake Bolshoe Leprindo; Sokhondinskii Nature Reserve (Nizhnii Bukukun, Verkhnii Bukukun); Kyra); Amurskaya (Belogorsk; Zeiskii Nature Reserve; Uril; Blagoveshchensk; Zeya; Tynda; Shimanovsk; Ekimchau; Norsk; Pashkovo, and many other places); Khabarovskiy Kray (Slavyanka; Bolshekhekhtsyrskii Nature Reserve, Khabarovsk suburbs; Chegdomyn; Nikolaevsk-na-Amure; Botchinskii Nature Reserve); Primorskiy Kray (Lesogor'e; Khasan area; Primorskiy; Kedrovaya Pad Nature Reserve; Vityaz Bay; near Kalinovka; near Zanadvorovka); Magadan Oblast (650km NW Magadan, near Susuman (Yakovlev, Dubatolov & Titov, 2013)); Kamchatka; Sakhalin Island (Novoaleksandrovik); Kurile Islands (Kunashir).


GLOBAL DISTRIBUTION

Recorded by Pittaway (1993) as a resident throughout temperate Europe (with the exception of the British Isles, NW France, the Low Countries, northern Scandinavia, the Iberian Peninsula and most of the Balkans); then east, through temperate Russia north of the Kyrgyz Steppe, southern Siberia, southern Yakutia (Kaimuk et al., 2005), the Altai Mountains (Zolotarenko et al., 1978), northern China and Korea, to the Kurile Islands, Sakhalin Island and northern Japan. In the south, found from northern Turkey and the Caucasus (Pittaway, 1993), east through Transcaucasia, Tajikistan (Eichler, 1971), Kyrgyzstan (Danner et al., 1998), Afghanistan (Ebert, 1969) and northern Pakistan (Bell & Scott, 1937; Rafi et al., 2014), to Nepal (Daniel, 1961), Bhutan and Xizang/Tibet (Eichler, 1971); thence northeast through eastern Kazakhstan (Danner et al., 1998) to Xinjiang, China (Pittaway & Kitching, 2000). Records from Yunnan and Zhejiang (Danner et al., 1998) require confirmation.

This species is also present in the USA (northeast, the Great Lakes region, the upper Midwest, throughout the Rocky Mountains as far south as Utah and Colorado, and westward to Oregon and Washington State in the Pacific Northwest, as well as in Alaska) and Canada (from the eastern Maritime Provinces to northern Quebec and west to British Columbia and the Yukon Territory) (Tuttle, 2007).


Global distribution of Hyles gallii. Map: © NHMUK.

BIOGEOGRAPHICAL AFFILIATION

Holarctic; Nearctic and Palaearctic (both eastern and western subregions). Pleistocene refuge: Polycentric -- Holomediterranean, Caspian, Iranian, Turkestan, Mongolian and Manchurian refugia.



Return to Sphingidae of the Eastern Palaearctic species list
© A.R. Pittaway & I.J. Kitching (The Natural History Museum, London)