Lappet Moth (Lasiocampidae Lasiocampinae Trabala vishnou - Lefebre, 1827)

Found as larvae at Tai Tam, Hong Kong on April 3, 1999.  Another seven 1st instar larvae were found at Red Hill near Tai Tam on Jan 9, 2004.  Of the 7 larvae, two were already parasitized; 3 of the remainder were males and 2 female.  One of the females eclosed on April 23, 2004.  There appears to be  6 instars.  LFP was Rhodomyrtus tomentosa.  Care should be taken with the caterpillar, as the hairs contain an urticarious toxin that stings as well as itches, though some people are immune.

1st instar larvae; about 8 mm / 0.3 inch long
Jan 9, 2004

2nd instar larvae; about 12 mm / 0.5 inch long
Note the twin cetae horns and characteristic red feet and head;
the blue coloring on the tail segment is actual.
Jan 19, 2004

3rd instar larvae; about 1.5 cm / 0.6 inch long
The two larvae  on the right with shortened cetae horns had been parasitized.
Jan 29, 2004

4th instar larvae in an alarm posture; about 1.8 cm / 0.7 inch long
Note the developement of the two dorsal tufts.
The wasp parasites left their hosts and formed pupae (3 mm) hanging from a thread
Feb 9, 2004

5th instar larvae; 2.2 cm / 0.9 inches long
The blue dots are bright cobalt blue in sunlight.
Feb 19, 2004

A  6th instar larva, about 4 cm / 1.6 inch long.
Mar 10, 2004

The mature larva was about 5.7cm / 2.25 inch,
Two of the 2004 larvae measured 8 cm before their color change;
the other 3 larvae were smaller at about 5 cm.
The prepupal color changes were as shown;
Apl 14, 1999 and Mar 22, 2004.

The cocoon, Apr 14, 1999 and Mar 22, 2004

The male moth in typical rest position;
The female moth in typical rest position; top & underside views

The moth eclosed on May 3, 1999
Wingspan was about 6.7 cm / 2.6 inches


The moth eclosed on Apr 15, 2004.
Wingspan was about 4.75 cm / 1.9 inches

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This page last updated 24-Apr-2004.