27 
Macleaya tremula. — Theobald (1903). 
Head black with flat black scales forming a large patch 
on each side, then a small grey patch, another small black one, 
and then more grey scales outside ; the middle of the head with 
silvery white narrow-curved scales, and a silvery white line around 
the eyes ; numerous small black upright forked scales over the 
occiput ; palpi black with grey tips ; clypeus and proboscis 
black ; antennae black, the base of the second segment bright 
testaceous, the second segment with small grey scales. Thorax 
deep brown, covered with very small narrow-curved bronzy- 
brown scales, with more or less pronounced irregular lines of 
pale golden scales ; the line over and in front of the root of each 
wing curved ; the golden scales are broader than the dark ones ; 
on each side in front is a short line of white scales and the pro- 
thoracic lobes are covered with similar coloured ones ; in front 
of the scutellum are irregular (often indistinct) short lines of 
larger pale creamy scales, and some long backwardly projecting 
black ones ; scutellum testaceous-brown, the mid lobe with small 
flat grey scales in the middle, black ones at the sides, the lateral 
lobes with narrow-curved whitish ones ; border-bristles large 
and black, there are also very large black ones on the mesonotum ; 
metanotum black ; pleurae brown, with patches of flat grey 
scales. Abdomen black, the segments with basal median creamy 
spots, and basal lateral silvery white ones ; the last segment 
(sometimes the last two) without the median spot ; first segment 
testaceous, with black scales ; border-bristles jet black ; venter 
white at the base, some of the segments with basal white areas, 
the apical segments black ; genitalia white scaled. Legs black, 
banded ; coxae pale with patches of white scales, very long ; 
femora black above, white ventrally ; knee spot white ; tibiae 
black ; in the fore and mid legs the first tarsal and second tarsal 
segments have narrow white basal bands, last three tarsals black ; 
in the hind legs the first, second and third tarsal segments have 
broad snowy-white basal bands, fourth tarsal all black, the fifth 
all white ; ungues of all three pairs of legs equal and simple. 
Wings with brown scales, the lateral scales long and thin ; the 
first sub-marginal cell longer and narrower than the second 
posterior cell its base nearer the base of the wing, its stem less 
than half the length of the cell, stem of the second posterior 
cell as long as the cell ; posterior cross-vein longer than the 
mid, about one and a-half times its own length distant from it ; 
first longitudinal vein and the sub-costal densely scaled with 
large dark brown spatulate scales ; fringe brown ; base of the wing 
pale. Halteres pale ochreous. 
Length, 4.5 mm. 
<J . Palpi black scaled, apical segments white, base of penul- 
timate segment white, also apex of ante-penultimate, a small 
pale band about the middle of the long ante-penultimate segment, 
a few prominent black bristles on the last two segments, not 
