CERBERONOTON RUBESCENS RUBESCENS (Butler, [1876]) -- Rosy double-bristled hawkmoth

Female Cerberonoton rubescens rubescens. Photo: © NHMUK Male Cerberonoton rubescens rubescens. Photo: © NHMUK

TAXONOMY

Diludia rubescens Butler, [1876], Proc. zool. Soc. Lond. 1875: 623. Type locality: North India.

Synonym. Diludia rubescens Butler, [1876].

Synonym. Meganoton rubescens rubescens Rothschild & Jordan, 1903.

Synonym. Meganoton rubescens dracomontis Mell, 1922.


ADULT DESCRIPTION AND VARIATION

Similar in appearance to the American Amphonyx lucifer (Rothschild & Jordan, 1903), and to the oriental Psilogramma menephron (Cramer, 1780). Smaller than Cerberonoton rubescens severina (Miskin, 1891). Outer margin of hindwing almost even, not scalloped as in Cerberonoton rubescens severina. Mesothoracic tegula with sides of the same clayish brown as the forewing upperside, unlike Cerberonoton rubescens severina. Palpus as large as in Meganoton nyctiphanes, second segment shorter than broad, including scaling. Abdomen with three or four distinct yellow side patches, bordered above by a continuous black band. Both wings with fringe less extensively white than in Cerberonoton rubescens severina. Both wings undersides darker than in Cerberonoton rubescens severina.

In the male genitalia, uncus thin, gently curved, strongly spatulate, the sides of the dilated apical portion turned down and clothed with some long, stiff hairs, the apical margin rounded-truncate. Gnathos longer than uncus, turned sharply dorsad near apex, and produced at the curvature into an obtuse process that is compressed like the vertical, cleft, apical part of thee gnathos. Valve with ventral margin oblique, dorsal margin straight proximally then somewhat dilated and turned inward; apex obliquely rounded; a patch of large, multidentate, clay-coloured stridulatory scales present. Harpe produced into a curved, finger-like, pointed, ventral process, the upper margin dilated into a triangular lobe with several prominent teeth, unlike in Cerberonoton rubescens severina. Aedeagus with one curved process that is less than twice as long as the aedeagus is wide and is recurved towards the aedeagus. In the female genitalia, ostial plate strongly sclerotised, glabrous, convex mesially. Ostium proximal to the middle of the plate, covered by a long, sinuate-truncate lobe that narrows distad.


Male Cerberonoton rubescens rubescens, Kuala Lumpur, Malaysia. Photo: © Wendy Lim Male Cerberonoton rubescens rubescens, Bukit Fraser, Malaysia. Photo: © CheongWeei Gan.

ADULT BIOLOGY


FLIGHT-TIME

China: 31.v (Guangdong).


EARLY STAGES

OVUM:

LARVA:


Full-grown larva of Cerberonoton rubescens rubescens. Image: Mell, 1922b

PUPA:


Pupa of Cerberonoton rubescens rubescens. Image: Mell, 1922b Pupa of Cerberonoton rubescens rubescens. Image: Mell, 1922b

Larval hostplants. Annona, Melodorum (Annonaceae), Kigelia, Spathodea (Bignoniaceae) (Inoue, Kennett & Kitching, [1996] 1997).


PARASITOIDS

Ichneumonidae: Quandrus pepsoides (Smith).


LOCAL DISTRIBUTION

China: Guangdong (Shaoguan, 700m; Nanling National Forest Park, 1100m).


GLOBAL DISTRIBUTION

Northeastern India, central and northern Thailand, southern China, and northern Vietnam.


Global distribution of Cerberonoton rubescens rubescens. Map: © NHMUK.

BIOGEOGRAPHICAL AFFILIATION



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