Cat. Lep. Ph. Brit. Mus. Vol. 1:

Sarosa acutior.
Isanthrene acutior, Feld. Reis. Noy. pl. 102. f. 27 (1874) ; Kirby, Cat. Het.
p. 135.
Head and thorax fulvous orange; palpi black at base; patagia
elged with fuscous; abdomen with the first four segments yellow
and fulvous edged with black, the 2nd segment with broader
black band with dull blue subdorsal spots on it; the terminal
segments black with dull blue subdorsal stripes; wings yellowish
hyaline, the veins and margins narrowly black, except the subcostal
veins and cell of fore wing which are fulvous orange. Fore wing
with the costal area suffused with orange; a broad orange fulvous
fascia on inner margin. Hind wing with the apical area tinged
with fulvous; the black on. termen expanding into dentate marks
towards tornus,
Hab, Ecvavor, Sarayacu, 1 female; Amazons (Bates), type fT in Coll.
Rothschild. wp. 36 millim.


AZ NOTE: Cat. Lep. Ph. Brit. Mus. uses a non-standard definition of "tegulae" and "patagia".
From Vol. 1:
"The thorax consists of three segments-the prothorax, bearing the
tegulm or collar-lappets, the patagia or shoulder-lappets, and the
fore legs ..."