120 LEPIDOPTERA HETEROCERA 
79. GENUS TACHYPHYLE, BUTLER 
Tachyphyle. Butler, Trans. Ent. Soc. Lond. p. 329 (1881). 
Characters. — Face smooth. Palpus shortish to moderate, second joint rough-scaled beneath, 
third joint smooth, in Cf quite short, in 9 quite moderate, little exposed. Tongue present. Antenna 
moderate to rather short, in cf bipectinate with moderately strong branches to beyond one-half, some- 
times to rather near apex, apical part subserrate, with minute bristles; in Q more or less serrate, with 
minute bristles. Pectus hairy. Femora nearly glabrous. Hindtibia with median spurs minute, more or 
less aborted, apparently sometimes entirely obsolete, terminals very unequal. Abdomen not crested. 
Frenulum in gf slender, from before well-marked basal expansion; in Q wanting. Forewing with costa 
rather straight proximally, well arched distally, apex acute, more or less falcate, termen oblique, either 
very gently concave nearly throughout, or in anterior half only, straight posteriorly, tornus pronounced, 
cell short, produced apically. DC? rather strongly incurved, SC! free, SC? normal, R! stalked, very 
rarely connate, M! very shortly stalked, occasionally connate; hindwing with costa rather short, apex 
roundly squared, termen long, usually (especially in cf) quite straight almost to tornus, occasionally 
moderately rounded, tornus pronounced; inner margin long, cell short, DC? somewhat incurved, very 
rarely at all strongly oblique posteriorly, C approximated to cell rather shortly, in rare cases to middle 
or slightly beyond, SC? stalked, M! stalked (nearly always long-stalked, or at least longer-stalked 
than SC?), M? from near (often close) to end of cell, 
Early stages unknown 1). 
A very natural genus; though connected with PArudocentra (which is certainly related) by a few 
species of intermediate shapes, it can be readily differentiated by the tibial armature, the non-elongate 
third palpal joint in the Q, etc. Dichorda is another relative, but again has four spurs, differs in the 
normally-shaped wings, more hairy palpi and legs, non-stalking of M!, etc. 
Type of the genus : Tachyphyle acuta, Butler (1881). 
Geographical distribution of species. — Neotropical. 
I. T. acuta, Butler. Panama to N. Brazil. 
Tachyphyle acuta, Butler, Trans. Ent. Soc. Lond. p. 329 (1881). 
2. T. allineata (Warren) (przec. var. vel syn.?). Venezuela to French Gui- 
Dichorda allineata, Narren, Novit. Zool. Vol. 7, p. 132 (1900). ana. 
3. T. basiplaga (Walker). Brazil. 
Geometra basiplaga, Walker, List Lep. Ins. Brit. Mus. Vol. 22, p. 512 (1861). 
4. T. nigroapicalis (Dognin). Colombia. 
Nemoria nigroapicalis, Dognin, Ann. Soc. Ent. Belg. Vol. 44, p. 439 (1900). 
5. T. undilineata, Warren. British Guiana. 
Jr 
Tachyphyle undilineata, Warren, Novit. Zool. Vol. 7, p. 140 (1900) 2). 
6. T. occulta, Warren. Colombia. 
Tachyphyle occulta, Warren, Novit. Zool. Vol. 8, p. 451 (1901). 
T. olivia (Schaus). Brazil. 
Phrudocentra olivia, Schaus, 'Trans. Amer. Ent. Soc. Vol. 27, p. 253 (1901). 
8. T. subaurata, Warren. 
Tachyphyle subaurata, Warren, Novit. Zool. Vol. 11, p. 27 (1904). 
9. T. costiscribta, Warren. 
Tachyphyle costiscripta, Warren, Proc. U. S. Nat. Mus, Vol. 3o, p. 426 (1906). 
Peru. 
French Guiana. 
1) But see on. P7trudocentra., 
2! Meloc/ora undilineata on type label. 
