MARUMBA CRISTATA CRISTATA (Butler, 1875) -- Common striped hawkmoth

Female Marumba cristata cristata. Photo: © BMNH Male Marumba cristata cristata. Photo: © BMNH

TAXONOMY

Triptogon cristata Butler, 1875, Proc. zool. Soc. Lond. 1875: 253. Type locality: [India, West Bengal,] vicinity of Darjeeling [Darling].

Synonym. Triptogon cristata Butler, 1875.

Synonym. Marumba cristata ochrea Mell, 1922.

Synonym. Marumba cristata jodeides d'Abrera, 1987.


ADULT DESCRIPTION AND VARIATION

Wingspan: 100--124mm. This sombre-coloured insect is very constant and cannot easily be confused with other species. The uniform colour of the upperside, the heavy black mesial line of the body, the simple lines of forewing, the presence of a small creamy stigma on forewing, the absence of the first anal spot from the hindwing, and the rosy tint of the underside separate M. cristata at a glance from the other species of Marumba. Antenna less than one-third length of forewing, thinner than in M. dyras; in male grooved, the seriate basal cilia of the middle segments nearly as long as the segments. Tarsi very stout (Bell & Scott, 1937).

In the male genitalia, uncus deeply divided into two slender, pointed lobes. Gnathos triangular. Valva distinctive in having the dorso-apical lobe pointed and curved upwards and the ventral lobe broad and rounded. Harpe not so strongly curved as in Marumba sperchius and M. dyras, not denticulate and reaching nearer to end of valva. In the female genitalia, sterigma with a long truncate process in front of ostium bursae and a dentate flap on each side.


Adult Marumba cristata cristata, Doi Inthanon, Chiang Mai, Thailand, 28.viii.2006, 1600m. Photo: © Thomas Ihle.

ADULT BIOLOGY

The species occurs in southern China in jungle of mixed bamboo and deciduous trees at 1,500--2,500 feet (Mell, 1922b).


FLIGHT-TIME

China: 1-11.vi (Xizang/Tibet); 25.vi (Yunnan); vii (Xizang/Tibet).


EARLY STAGES

OVUM: Ivory-yellow, broadly oval (2.75-3.0 x 2.50 x 2 mm), smooth and shiny (Mell, 1922b).

LARVA: Full-fed 68mm, width 11mm; head 8.5 x 7mm. According to Mell (1922b), in the final instar very similar in shape to that of Marumba dyras; the horn long, straight, the breadth greater than the height in a cross-section. Surface of head and body dull; head with a line of tubercles separating the face from the cheeks. There is a transverse row of small tubercles around each secondary ring, and larger pointed tubercles along the oblique lateral stripes. Horn covered with small tubercles, with small tubercles along the edge of the anal flap and claspers.

In colour, head pale green, with the line of tubercles between the face and cheeks obscurely white; there is also a dark green dorsal stripe from the vertex to the nape. Body pale green with a dark green dorsal stripe to the hind margin of segment 4. The oblique lateral stripes are white, sometimes edged narrowly by red or yellow, and running across three segments; tubercles on the oblique stripes orange. Horn blue-green, the tubercles on the basal half paler and those on the distal half darker than the body colour. The tubercles edging the anal flap and claspers paler than the body colour. True legs dull red banded with dull brown, and sometimes with a dull brown mark at the base; prolegs and clasper pale green. Spiracles oval, the central slit pale in colour, dilated at the top and bottom and with a red-brown band on each side of it (Mell, 1922b).

The colour becomes paler and somewhat translucent-looking before pupation.


Full grown larva of Marumba cristata cristata. Image: Mell, 1922b

PUPA: 50--60mm, width 16mm. Similar in shape, surface and colouring to other pupae of the genus; the cremaster large, tapering gently to a simple point, rugose (Mell, 1922b).


Pupa of Marumba cristata cristata. Image: Mell, 1922b

Larval hostplants. Lisea elongata, Machilus ichangensis and Phoebe (Lauraceae) in China (Mell, 1922b).


PARASITOIDS


LOCAL DISTRIBUTION

China: Yunnan (nr. Jinping, 2155m); Xizang/Tibet (Gamtog; Baxoi County; Langmai, Gonjo County (3045'N, 9852'E)); Guangdong (Lianping; Nanling National Forest Park); Hainan (Sanya, Mt. Jianfengling; Duowen Ling, nr Lingao; Longhushan, Wenchang City).


GLOBAL DISTRIBUTION

From Himachal Pradesh (India) across Nepal and northeastern India to southern China, northern Thailand, Laos and northern Vietnam.


Global distribution of Marumba cristata cristata. Map: © BMNH.

BIOGEOGRAPHICAL AFFILIATION



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