Host plant at
Yanayacu - Chusquea
(left) and ventral (right)
Fifth instars are very distinct among other
Chusquea-feeding caterpillars in our area.
Their heads are dark brown to black and have well
developed but rounded and curved scoli. The shape
of their body is slightly flattened (trapezoidal in
cross-section) and widest at A2. Immediately after
molting to fifth instar, larvae are various shades
of brown, green, and pale blue dorsally and
dorsolaterally and with shades of white and pink
spiracularly to ventrolaterally. Recently molted
larvae have the white spots subdorsally on A2-A4
very prominent but fading with age. Over the course
of 12-24 h larvae become darker overall, with blue
areas becoming more distinct, especially on the
supraspiracles on A1-3. The dorsum of mid-stadium
larvae is marked with light brown markngs that form
pairs of thin, broken lines subdorsally to A4 or A5
and a mid-dorsal line from T3-A7 or A8. Late in
stadium, near pupation, body ground color becomes
predominantly brown with dark brown areas forming
distinct dorsal chevrons highlighted with small
Greeney, H. F., L. A. Dyer, & T. W. Pyrcz.
2011. First description of the early stage biology
for the genus Mygona: the natural history of Mygona
irmina Doubleday, 1849 in eastern Ecuador. 11 pp.
Journal of Insect Science 11: 1.