140 
PACIFIC SCIENCE, Vol. IV, April, 1950 
Genus Cocytodes Guenee 
Cocytodes Guenee, 1852, Spec. Gen. Lepid., 
Noct. 3: 41; Hampson, 1894, Fauna Brit. 
India, Moths 2: 485; 1913, Cat. Lepid. 
Phal. B.M. 12: 258; Gaede, 1938, in Seitz 
11: 457 (type coerulea Gn.) . 
The proboscis is fully developed; the labial 
palpi are upturned, the second joint reaching 
the middle of the frons. The frons is smooth, 
clothed with flattened hairs and scales. The 
male antennae are simple. The thorax is 
clothed with hairs, without a crest. The tibiae 
are fringed with long hairs and have spines. 
The medial cell of the posterior wings ex- 
tends about one-third of the wing. 
One species only is known from these 
regions. 
Cocytodes coerulea Guenee 
Fig. 1 a—c 
Cocytodes coerulea Guenee, Spec. Gen. Lepid., 
Noct. 3: 41, pi. 13, fig. 10, 1852. 
Arete caerulea Guenee; Hampson, Fauna 
Brit. India, Moths 2: 486, fig. 272, 1894. 
Cocytodes caerulea Guenee; Hampson, Cat. 
Lepid. Phal. B. M. 12: 259, fig. 33, 1913. 
Cocytodes coerulea Guenee; Tams, Ins. of 
Samoa, Lepid. 4: 214, 1935. 
Cocytodes caerulea Guenee; Gaede, in Seitz 
11: 457, 1938. 
Cocytodes caerulea Guenee; Viette, Pacific 
Science 3(4): 330, 1949. 
Wingspread 86-88 mm.; length of the 
anterior wings 37-38 mm. 
The head and the thorax are reddish 
brown, the abdomen is gray. In the male, 
there is a strongly sclerotized subrectangular 
plate in the middle of the tergite of the sixth 
segment which is transversely striped with 
black (Fig. lb). 
The anterior wings and thorax are reddish 
brown irrorated with bluish white scales, es- 
pecially in the proximal part of the wing; the 
subbasal line is black, slightly oblique and 
sinuous; the orbicular spot is black and small; 
Fig. 1. Cocytodes coerulea Guenee: a, male 
genitalia; b, tergite of the eighth abdominal seg- 
ment; c, female genitalia. 
the reniform spot is well marked; the post- 
medial line is at first oblique with regard to 
the costa, then, on a level with Ms, becomes 
a 1 most parallel to the latter, and finally 
reaches almost perpendicularly the inferior 
edge of the wing at its distal third; a large 
