46 
PHRUDOCENTRA. By L. B. Prout. 
oleaster. 
albisparsa. 
subfulvata. 
nepia. 
undilineafa. 
costiscripta. 
flaccida. 
tanystys. 
niveiceps. 
taediata. 
nigro- 
apicalis. 
lucens. 
T. oleaster S chavs is very much like allineata (5 e), but of a duller, more brownish green colour, somewhat 
clearer green costally, basally and terminally than in the median area. Structure as in allineata, of which it 
might possibly be a form. Costa Rica, Panama and I think Colombia. 
Ik albisparsa Warr. (5 e). Hindtibia of S not dilated. Hindwing very strongly produced to anal angle. 
Lines approximated, wavy; median area irrorated with white. $ palpus with 3rd joint elongate. Peru (loc. 
typ.); Costa Rica, Colombia to French Guiana, Trinidad and the Amazons. A $ from British Honduras, with 
the postmedian line more crenulate, perhaps represents a race. 
T. subfulvata Warr (5 e). Variable in size. Easily known by its strong ochraceous and grey suffusions 
(beneath clearer ochreous), which leave only a little clear green distally and on the forewing costaly. Cell-spot 
of hindwing elongate, often also broad. Palpus short and slender, antenna well pectinate, in both sexes nearly 
alike. French Guiana (type) and the Amazons. 
T. nepia sp. n. (5 e). Near subfulvata in structure and coloration, but much smaller. Hindleg rela¬ 
tively with tibia a little shorter and thicker and tarsus longer (in both species long). Wing-shape slightly more 
typical; both wings with 1st median well stalked; no definite markings except the straight whitish postmedian 
line. Taperinha, near Santarem, June and July 1927 (Dr. H. Zerny), 5 SS- Type in Mus. Wien. 
T. undilineafa Warr. (S = occulta Warr.) (5 f) has about the shape of albisparsa (5 e) but the lines 
brown, costal edge of forewing dark-spotted, some slight brownish strigulation on the wings. S with hind- 
tibia somewhat dilated, pectinations rather long; $ also pectinate, though somewhat more shortly. British 
to French Guiana and the Amazons, also in Matto Grosso, Ecuador, Colombia and Costa Rica. In Cara- 
baya and N. Bolivia (La Paz) a probable race, with larger cell-dots (especially on the forewing) and heavier 
brown markings, awaiting more material for confirmation of the distinctions. 
T. costiscripta Warr. (= fuscicosta Warr.) (5 f). Considerably smaller and less characteristically shaped 
than undilineata, with which it agrees in the colour of the lines; costal margin more strongly darkened, with 
slight projections at the origin of the lines. French Guiana and the Amazons. 
13. Genus: Phru do centra Wan. 
A heterogenous and not very sharply defined genus, assumed to include all the nearest relatives of 
Tachyphyle which have not the proximal spurs of the hindtibia aborted and are generally markedly different 
in shape, rarely showing either the acutely produced apex of the forewing or the produced anal angle of the 
hindwing, scarcely ever (perhaps only in the S of taediata) the two peculiarities in conjunction. Terminal joint 
of $ palpus long (in typical Tachyphyle rather short). The generic name is distinctly paradoxical; Warren’s 
type specimen (a S of pupillata) has the proximal spurs of the hindtibia pressed closely against the leg so that 
he overlooked them! 
Ph. flaccida Warr. (6 a). Systematic position doubtful. The S frenulum is so well developed that it 
might be given a new genus next to Rhcdochlcra. $ palpus with 3rd joint long. Hindtibia of S with proximal 
spurs short, rather near the terminal ones; a hair-pencil and terminal process. Hindwing shaped nearly as 
in Tachyphyle. An unmistakable species. Described from Peru, but commoner on the Upper Amazon. 
Ph. tanystys Prout (5 g). Wings rather broader; the brown markings not mixed with red; antemedian 
of forewing bent inwards at fold; basal area in posterior half clear green, anterior half variegated with green, 
brown and whitish-violet. S antenna with at least 30 joints pectinate, rather more than in flaccida. Santa 
Catharina. 
Ph. niveiceps Prout. (6 a) shows in its white head and in the shape and markings of the forewing, distinct 
relationship to Tachyphyle. undilineata (5 f), but the pectinations are very short and the hindtibia has all the 
spurs well developed and a rather long terminal process. Lines less bright brown than in undilineata the post¬ 
median on the fore wing much straighten E. and S. E. Peru and Bolivia. 
Ph. taediata Feld. (6 a) is another whiteheaded, Tachyphyle -like species, especially so in the S', the $ 
has broader wings. Pectinations shortish. Hindtibia nearly as in niveiceps, the process rather less long. Lines 
weak, chiefly defined by a characteristic blue whitish shading. — ab. nigroapicalis Dogn., founded on a S from 
Popayan, Colombia, has rather distinct cell-dots and black dot in apex of fringe of forewing. — lucens Warr., 
founded on a S from Pozuzo, E. Peru, is also possibly a casual aberration, but is rather large and has the 
hindwing rather round-margined for a S and the antemedian line of forewing more regularly curved, and 
may well represent a race. Otherwise taediata is distributed on the Amazon (the type locality) and from 
Colombia to French Guiana, including Trinidad; also apparently Santa Catharina, an obscurely marked $ in 
coll. Oberthur. 
