86 
EUCHROMIA. By Dr. A. Seitz. 
It feeds on Convolvulaceae, probably also on other weeds, and makes its cocoon with the help of its hair. 
The imago flies in sunshine, resembling some gaudily-coloured, hornet-like wasp; its clumsy, straight forward 
flight resembles almost that of Zygaena. The native children in Ceylon to whom I showed them feared they 
would sting. They are met with singly all the year around, but only at certain times and localities in 
greater number. 
horsfieldi. E. horsfieldi Moore (12d) has the wings spotted almost exactly as polijmena, but the abdomen 
black, with some spots metallic blue, the 1 st and 4 th segments lemon-yellow. From Sumatra throughout the 
pallens Sunda Islands to Flores; according to Hampson also on Christmas Island. Not scarce in Java. — ab. pallens 
ab. nov. (12 d) refers to ?? having the spots on the wings hyaline instead of orange, and the abdomen devoid 
of all metallic lustre. The same appearance is also presented by normal specimens which have flown for 
any length of time, especially in rain. But in this case the spots, especially near the border are bleached 
irregularly, as is the case also in poly men a; larva reddish yellow-brown, in front and behind with long hair¬ 
brushes; the hair on the sides black, on the dorsal tubercles black and blue. Feeds on Dioscoreae. 
magna. E. magna Swinh. is the only Euchromia of Ceylon with hyaline, instead of orange spots. Abdomen 
characterized by its blackish steel-blue lustre, with 2 orange bands on the 1 st and 4 th segments. Forewing 
with one spot below (he base of the cell, one in and another below the cell; one spot above rib 6 and 2 
between 3 and 5; all of these spots transparent. The hindwing has only one at the base, one each 
within and below the cell, and another one band-shaped beyond the cell. The species is not often 
represented in collections sent from Ceylon which are mostly made near Colombo, Kandy or Galla; nor did 
I find it in the South of the island; but it occurs at Trincomali which has a very different Fauna from that 
of Southern Ceylon, and also in Southern India. In size it approaches a small polymena. It seems rather 
scarce or very local. 
vitiensis. E. vitiensis Hmps. from the Fidji Islands is black, with Irons and coxae clear white, thorax partly 
with metallic lustre, abdominal segments 1 and 4 ringed with orange, 3 and 4 yellow beneath and adorned 
with lateral rows of metallic blue spots. Forewings with hyaline spots, one elongate before the 
middle and below the cell, a square one each within and below its apex, and some longitudinal spots above 
ribs 2, 3, 4 and 6. Hindwings with hyaline spots at base in and below the cell. Discocellulars marked with 
metallic blue; a band behind the cell between ribs 7 and 2. 40 mm. 
oenone. E. oenone Btlr. (12 f), a most gaily coloured species, having the collar red, patagia yellow, segment 
1 brass-yellow, 2 and 3 steel-blue, 4 and 5 dark red, 6 and 7 blackish-blue. Wings with hyaline and blue 
spots. Those at costa occasionally coloured yellowish (ab. 1 Hmps.) Solomon Islands. 
eincta. E. cincta Montr. Likewise gaudily coloured; tegulae purplish-red, segments 1 white, 2 and 3 blue in 
front, with whitish glistening dorsal and lateral spots; 4 dark red, 5—7 with brass-yellow spots above and 
on the sides. Forewings with hyaline spots similar to the preceding form, hindwings with 4 yellow ones. 
From New Caledonia; unknown to me in natura. 
auranti- E. auranticincta Hmps. (1 2f), easily recognized by the colouring of the abdomen; Segments 1 — 3 
cmc-ta. oran g 6) tfrg remaining ones blood-red; all segments dorsally margined with black, beneath unicolorous deep 
red. German New Guinea. 
neglecta. E. neglecta Bothsch. ( 1 2e). Wings with large hyaline spots and, embedded between them, some dots 
of metallic blue lustre. Abdomen most characteristic: Segments 1—3 silvery, margined with blue, 4—6 dark 
blood-red. Solomon Islands. Figured from a typical specimen from Bougainville of the Tring-Museum. — ab. 
occidentalis. occidentalis Bothsch. (12 i) from Vella-Lavella and Kulombangra differs from typical neglecta in having the 
first abdominal segment pale brass-yellow above, th 2 nd and 3 rd metallic sky-blue. 
dubia. E. dubia Boeb. (12h). Abdomen with dull blue lustre; the first abdominal segment dull orange, the 
brillantina. 3 rd — 5 lh blood-red beneath; from Ceram. — brillantina Bothsch. (12h) is one of the loveliest Euchromia, 
having the wings between the hyaline portions gorgeously adorned with glittering blue spots. Abdomen with 
fulgens. metallic blue bands, scarlet beneath; 1 st segment white. From Buru. — fulgens Lathy stands midway between 
brillantina and duby, differing from the latter in having all the abdominal segments excepting the first banded 
bourica. with blue above. Geelvink Bay, New Guinea. — bourica Bsd. (= caelipennis Wkr., pagenstecheri Boeb.) 
(12h) lacks on the first segment the yellow band; the entire abdomen dark. From Buru, Ceram and 
amboinica. Amboina. — amboinica Hmps. (12 h) appears closely allied to the preceding forms, but has the abdomen 
ventrally less red and above less intensely blue. Known only from Amboina. 
