4 
PETOVIA; DERAMBILA. By L. B. Prout. 
4. Genus: I*etovia Walk. 
Pace smooth. Palpus minute. Tongue rudimentary. Frenulum wanting. Hindtibia with terminal 
spurs only. Venation altogetlier as in the Hemitheinae, to which Grunberg — perhaps with justification — 
proposed to remove it, i)ut the genitalia, the coloration and scheme of markings and the larva do not suggest 
affinities in that direction. Exclusively African. Probably only a single, excessively variable species. 
P. dichroaria. according to breeding exj)eriences, certainly embraces a wide range of variation. The 
veins of the forewing are nearly always, those of the hindwing very generally, blackened, especially in the 
cquatorialis. distal part of the wing. - equatorialis snbsp. nov. is rather large, at least in the rather deeply coloured, the 
border of the forewing broad anteriorly, that of the hindwing slight in the (J, broad in the $. Hindwing black- 
veined. Buddu, W. shores of Victoria Nyanza, 3700—3800 feet, September 1911 (S.A. Neave) a good series 
putrid- in coll. Brit. Mus. Also elsewhere in Uganda. - patris-aloysii Griinh. (1 a) has both wings more or less broadly 
aloysii. piack-bordered, the hindwing not or scarcely black-veined. Coloiir of forewing often paler, of hindwing lighter 
yellow. Ukerewe to N. Lake Nyasa. Variable, in parts of East Africa probably intergrading with the preceding. 
The few specimens which I have seen from Mount Mlanje, Nyasaland, can be provisionally placed with pafris- 
dichruaria. aloysii. though the veins of the hindwing begin to darken distally. dichroaria H.-Sch. (1 a) has the black 
border narrow, the forewing generally suffrrsed centrally, the hindwing strongly black-veined. South Africa, 
marqhiaia. perhaps commonest in Natal. - ab. marginata Walk, looks very different, lacking the black veins and central 
clouding, but has been bred from the same larva and the two forms have been taken in copula by Prof. Janse. 
amcdonga. — ab. ( ? siibsp.) amatonga Vuillot only differs from the name-type in having the black borders slightly less 
incertaria. narrow. Portuguese East Africa. — ab. incertaria G7i.( = perversaria Gaede) (1 a) is strongly suffused throughout 
with grey. — The larva of dichroaria is smooth, nearly cylindrical, with rather small, bilobed blackish head; 
body green, with narrow red, black-mixed dorsal belts on the anterior edges of the abdominal somites and a 
very thin, more or less interrupted spiracular line; spiracles black. On C'ombretum zeyherii (Janse, in lift.) 
or Vangueria infausta (Fawcett). 
uniiormis. P. uniformis Warr. is probably a narrow-winged aberration of the preceding, otherwise very similar to 
‘marginata and the name must perha]is supplant patris-aloysii. Nyasaland, only the type yet known. 
5. Genus: l>eFaml>ila Walk. 
A genus of very frail white moths, of small size and with very long antennae and legs. Antenna in the 
ciliated (shortly in the African species). Hindtibia with terminal spurs only, and these generally minute. 
The Indo-Australian species have been divided into sections in Vol. 12, pp. 34 35. The African approximate 
to Sect. C — “hindwing with 2nd subcostal stalked” — but often the venation of the fore wing is a little less 
specialized, the 1st sidicostal merely anastomosing with the costal, not running into it. I formerly regarded 
this less specialized group {syllaria, 'jacksoni, delostigma, puella, iridoptera and hyperphyes) as a genus, under 
the name of Cormm. but learned that the distinction was not in all species absolutely constant. 
mucriiUna. D. macritibia sp. nov. (1 b). One of the largest species, the ^ expanding 34 mm, the $ 35 —40 mm. An¬ 
tennal ciliation as long as diameter of shaft. Abdomen with blackish dorsal spots. Hindtibia of G ~ in 
all the other species known to me — dilated. Forewing with cell long; the l)lack cell-dot and terminal dots 
strong; the rows of dots nearly as black, the postmedian series more distally placed than in most of the species, 
quite as in p'lmctisig'iiata Walk. Underside only with cell-dot and terminal dots, and these reduced. Sao Thome, 
24 January to 25 February 1926, 2 11 9$ (T. A. Barns) in the Joicey Collection. 
ahicUuriu. D. alucitaria Sn.. (1 b). Only known to me from the description and the rather bad figure, from which 
it appears that the wings are even longer and narrower than in thearia, with the cells longer, the cell-spots 
(their colour not mentioned) jdaced well beyond the middle of the wing. Lines marked by indistinct vein-dot?. 
ViTng-expanse 22 mm. Founded on a single G from Princes Island in the Gidf of Guinea. Perhaps a smaller 
relative of inacritihia. 
thearia. D. thearia Sivi/nh. (lb). A rather small species, narrow-winged, the apex of the forewing slightly 
acuminate, the abdomen (as in alucitaria) extremely long and slender. Recognizable by the rather large and 
distinct cell-spots, that of the forewing black, that of the hindwing brown. Nigeria, Cameroons and Gaboon. - 
ansorgel. ansorgci :nov. On an average slightly larger, the spots reduced in size, especially the cell-spots. Founded on 
3 GG irt the Tring Museinn, collected by Dr. Ansorge at Nana Meya, Cugho River, N.Angola, 15 September 1903. 
(oatipunc- D. costipunctata Warr. Costal margin of forewing with a series of 8 or 9 minnte but distinct Wackish 
tata. between the base and the postmedian line. Brown transverse markings rather large and strong. Cell-spot 
of forewing black, enlarged, extending along the base of the 2nd radial; that of hindwing w'anting. Sierra Leone 
and Cameroons, ajiparently very rare. 
