Publ 1. IV. 1913. 
EUCHROMIA. By Dr. A. Seitz. 
85 
E. simplex Rothsch ., described from a single cf taken in July near Sabathu, (India), is smaller than simplex. 
the preceding species; head black-brown, body likewise, with dorsal and lateral rows of yellow dots. 
Forewings black-brown, a hyaline wedge-shaped spot in the cell, another one, band-shaped, below it along 
vein 1, and 3 smaller ones between 3 and 4, 4 and 5, 6 and 7. Hindwings hyaline in basal half, the 
remainder black-brown. 
E. naclioides Fldr. is said to have brown wings, cf forewings with 4, hindwings without any hyaline nciclioicles. 
spots; ? forewings with 5, hindwings with 3 similar spots. Body with pale spots. The three last named 
species I do not know. 
E. syntomoides Rothsch. is dark brown, forehead and shoulders white, abdomen brown, basal ring and syntomoides. 
macular rows white. Forewing smoky-brown, a large subbasal and a discal hyaline white spot below the 
median; a similar one in the cell and 5 beyond its middle. Hindwings smoky-brown, with subhyaline white 
spot near base and only 2 others beyond the cell. 21 mm. Borneo. — hosei Rothsch. is smaller and darker; hosei. 
cf with 2 spots in cell of forewing; abdomen ringed with white. Dulit, North-Borneo; „perhaps a distinct 
species 11 (Rothschild). 
E. sexpuncta Rothsch. is smoky-black, the first and last but one abdominal segments dirty white. Forewing scxpuncta. 
with 2 hyaline white spots before and 2 beyond the middle; hindwing with two similar ones, a subbasal and 
a larger median, cf 9 mm, ? 14 mm. Borneo, April and September. 
13. Genus: Eucliromia Hbn. 
Among the Old World Syntomidae this genus contains the most striking and beautiful forms. Not 
only are they generally much larger than Syntomis and Eressa, but are often adorned with lovely metallic 
hues, especially and most gorgeously developed in the Ethiopian Region. Thus E. sperchia and amoena 
display on their body a richness of colouring and such a wonderfully intense glitter that it is hardly equalled 
by any other butterfly of the Old World, but approaches the metallic lustre of its South-American and 
Mexican allies. All the species of Eucliromia visit flowers; the tongue is well developed, palpi short, upturned, 
not reaching the vertex. Antennae long, thickened in the middle, doubly pectinate, the teeth widening at 
the end. Tibiae provided with short spurs. Forewing rather pointed, narrow at base, costa slightly curved 
in cf, with white or yellow hyaline spots arranged in 3 groups, a basal, discal and preapical one. Hindwings 
fairly large, with basal and discal hyaline spots which are ordinarily always separate, and only in a few 
aberrative cases united. Base and space between the spots on forewing generally with metallic blue 
hues. On the forewing ribs 3—5 arise at the lower, 6 at the upper angle of the cell, 7 — 10 are stalked, 
11 originates at the apex of the cell. About 50 forms are known, y 7 of which belong to Africa, the rest to 
the Indo-Australian Region. All are day-fliers, enjoying the bright sunshine and counting in certain locali¬ 
ties among the most common butterflies. 
E. polymena L. (12 d). Wings with large, dull orange, somewhat translucent spots. Collar, segments 1. polymma. 
4 and 5 dark blood-red, segments 2, 3, 6 and 7 steel-blue, segments 1 to 3 silvery at the sides. Frons and 
2 dots on the shoulders with intense silvery lustre. Throughout India proper, as far as Ceylon and the 
Andamans, eastward to Burma.*) —- ab. laura Btlr. (12 d) has also the 6 th segment blood-red instead of steel- laura. 
blue, and on the forewing the orange basal spot is either absent or only indicated by a faint dot. — 
orientalis Btlr. which is the form of Farther-India, has the abdominal segments 4, 5 and 6 red as in laurct , orientalis. 
but the orange spots complete as in typical polymena. — ab. hainana ah. nov. (12 e) lacks the silvery dot on hainana. 
the shoulder, and the orange spots on the wings are more transparent, a feature which of course does not 
appear in the figure. From Hainan. — In formosana Btlr. from Burma and Formosa the two orange spots formosana. 
below the cell are united, but notched and constricted. — fraterna Btlr. (Type from Moulmein) has the fraterna. 
6 th segment not red throughout, but only on the sides. — siamensis Btlr. has on the other hand not only the siamensis. 
6 th but also the 7 th segment red. Siam. —- elegantissima Wallgr. which is the common form in the Philippines, elegantis- 
resembles a large spotted orientalis. but has the first segment orange instead of red. An aberrative form sima. 
is ab. diffusihelvola Schulze (Type in the Museum of the ’Bureau of Science 1 at Manila) in which the orange diffusihd- 
spots are shaded with brownish, but at their margins pale yellow. Was taken at Manila in December. — v0 ^ a - 
ab. egestosa ab. nov. (12 e) is a dark aberration with greatly reduced spots. On the hindwing the basal spot egestosa. 
is altogether absent, the discal one reduced ta a roundish dot. Philippines. Type in Semper’s collection at 
Frankfurt a. M. — celebensis Btlr. (— butleri Roeb.) has only 2 abdominal segments red, and the upper celebensis. 
portion of the last band reduced to a fine line. From Celebes. — Larva red-brown, 1 1 j i inch in length 
when full grown, with reddish tubercles provided with tufts of brown bristles. On the 1 st , 2 nd and last 
segment is has blunt hair-brushes which have twice the length of the dorsal tuft on the remaining segments. 
*) In the Macleay Museum in Sydney there is a specimen marked ’North Australia 1 which is undoubtedly an error. 
X 12 
