PubL 17. VI. 1932. RACHEOSPILA. By L. B. Prout. 25 
Larva, so far as yet known, of the Comibaena type (see the characterization of the subfamily). 
Our structural groupings are not in all cases absolute, but will be serviceable in helping to locate the species. 
This extensive genus is exclusively American — Canada to Argentina — chiefly Neotropical. 
A. Antennal pectinations in the <$ nearly always short, costal vein of 
hindwing not anastomosing with subcostal. 
lixaria- group. 
Forewing with termen gently curved. Hindwing more or less bent in middle, 1st median (except in 
paurocaula and anchistropha) well stalked. Abdomen with white, generally red-encircled dorsal spots (only 
in haematospila with the spots entirely red). 
R. glaucomarginaria Barnes & Me. D. (3 d). Distinguished by the large abdominal spots, absence of glauco- 
red terminal line and of red cell-dots; hindwing with a characteristic white dash on the discocellulars. Fringes marginaria. 
whitish ochreous, weakly spotted with pink. California, local; common on Mount Lowe in June. 
R. lixaria Guen. (= inclusaria Walk.). Guenee’s type is said to be in bad condition and the synonymy lixaria. 
is not quite certain. Walker’s inclusaria, described from Florida, but reaching Tennessee, has the abdomen 
nearly as in glaucomarginaria (3 d), the wings smoother green, the postmedian line fine, denticulate, the cell- 
dots present (brown) and a terminal red line, interrupted by white dots at the veins. A rather small species. 
— toxeres subsp. nov. (3 c), which has always been treated as identical with lixaria, has the antenna less white, toxeres. 
the termen of the hindwing bent in the middle, an antemedian line present on both wings, the cell-dots less 
strong, beneath (at least on the hindwing) obsolete. Expanse 27—32 mm. Not rare in Costa Rica and I believe 
elsewhere in Central America, the type from Juan Vinas in Mus. Tring. Also 1 <$ from Jamaica. 
R. cosmeta Prout (= decorata Warr., praeocc.). Very similar to toxeres (3 c), but of a slightly more cosmeta. 
bluish green, abdomen above more reddish, with additional whitish spots, though smaller than the principal 3, 
cell-dots minute, postmedian line of forewing almost straight, of hindwing more sinuous, fully as strongly 
curved behind middle as in toxeres. Mexico. — peruviana Prout (3 d) from E. Peru to E. Bolivia, is still nearer -peruviana. 
to toxeres in appearance, in that the reddish cell-dots are not reduced, at least on the forewing. Face more 
uniformly red than in cosmeta, where it has distinct white spots at the corners. Abdomen above retaining 
some green colouring at base. 
R. thymele sp. n. 29 mm. Differs from the preceding in short antennal pectinations (little longer than thymele. 
diameter of shaft), face less bright red and with a narrow green bar across upper edge, wings slightly more 
yellowish green, forewing with cell-dot sharper, lines extremely fine, less rigid, the postmedian of the hind¬ 
wing rather less bent. Costa Rica: Orosi, 1200 m (Fassl), 2 GS- Type in coll. L. B. Prout. 
R. sigillaria Guen. (= degener Prout) (3 b) is readily distinguished by its much smaller size, more sigillaria. 
slender but more black-mixed terminal line, obliquely placed and anteriorly obsolete postmedian line of the 
forewing and absence of a red line on the crown. Montevideo (Gltenee). La Soledad, Entre Rios, Argentina, 
a good series bred by Miss E. A. Britten. — The larvae are blackish, or variegated with red-brown or orange- 
brown, and bear pronounced lateral processes, those of the 2nd, 3rd and 4th abdominal somites obliquely 
erect, pyramidal and attaining to a great size, that of the 5th somite less large, but still prominent; evidently 
related to those of Nemoria. Pupa rugose, light drab, with fuscous dorsal lines, the wing-veins conspicuous, 
dotted with fuscous. 
R. modesta Dogn. is larger and more weakly marked than nympharia (3 c). Head fulvous, not rosy as in modesta. 
inclusaria (lixaria), the costa of the forewing fulvous, not white, the fringes white. Jalapa, Mexico, 1 q . 
R. nympharia Schaus (3 c). Larger than lixaria, the face brown, less reddish, the abdominal spots nympharia. 
more finely and indistinctly ringed, the terminal line fine, brown, in the $ almost entirely wanting, the fringes 
whitish, only very weakly spotted. Hindwing shaped nearly as in toxeres and cosmeta, apex of fore wing not 
acute. Costa Rica. 
R. extremaria Walk. Smaller than lixaria, palpus shorter, wings rather lighter green, abdominal extremaria. 
spots and terminal line apparently less developed, fringes with a broad ochreous or reddish line through the 
middle, sometimes (as in the type specimen) suffusing nearly their entire expanse. "Walker gives no locality, 
but his specimens were probably from Florida. The Barnes collection has a specimen from Hastings, Fla., 
which may belong to it. 
R. rubromarginaria Pack. I formerly sank this to extremaria, but our American friends tell us it is rubro- 
distinct. Cell-dots wanting, white lines (at least in Packard’s type from Montreal) broader than in the allies; margxnana. 
there is also a red terminal line, which is weaker or obsolete in extremaria. Eastern North America, range 
unknown to me. 
VIII 
4 
