( 2+1 ) 
Female Head. —On the vertex is a patch of broad white scales semi-circular 
in shape and lower down laterally, adjoining the orbital margin of either side 
is a very small spot of white scales, all the rest of the head is clad with 
black scales of the generic type; there are a few black upright forked scales 
i behind; vertical bristles absent, orbital black. Basal joint of antenna 
, black and nude, remaining joints black with short white hairs and black 
verticillate hairs. Palpi and proboscis covered with black scales the palpi 
being about one-eighth the length of the proboscis. 
Thorax. —Prothoracic lobes black covered with pearly-white broad 
elliptical scales and with a well-marked row of black bristles looking 
outwards and forwards inserted on the antero-external face. Mesonotum 
black with a central line composed of two rows of broad almost circular 
' scales pearly-white iridescent colours in some lights, patches of white 
! elliptical scales on the shoulders behind the prothoracic lobes and dark 
bronze-brown narrow-curved scales over the rest of its surface. Scutellum 
brownish-black, central lobe clad with racquet-shaped pearly-white scales, 
\ lateral lobes with spatulate dark brown scales; four bristles to central lobe, 
i two median parallel, and set close together, the two lateral far apart and 
widely divergent. Pleurae very dark brown to black; a paler yellowish 
patch beneath the wings and the portion projecting between the fore and 
mid coxae. There is a large patch of pearly flat scales covering the 
central area. Wings brown with dark brown scales with purple reflections; 
median and lateral scales of much the same shape but the median are 
rather broader and shorter; lateral scales long, broadly linear towards the 
! apex of the veins; the apices are slightly broader than the bases of the 
scales; first fork cell longer but not narrower than the second, its base 
j considerably nearer the wing base, its stem rather more than one-third the 
length of the cell; supernumerary vein a little nearer the base of the wing 
than the median transverse; posterior transverse vein longer than the 
median and about its own length from it. Coxae pale yellowish-brown 
clad with silvery spatulate scales and dark brown bristles on the fore and 
mid pale yellowish-brown scales on the hind; all legs clad with dark 
purple-brown scales the under sides of the hind femora having a narrow 
I line of pale scales. Ungues equal and simple on all legs. 
Abdomen. —Clad above with dark purple-brown scales, and on the 
venter with glistening pearly-white scales with metallic lustre in the 
freshly killed specimen but after drying they take a yellowish tinge from 
their background and to some extent lose their pearly lustre; on the 
dorsum of the second segment is a large patch of white scales and at the 
base of the fourth, fifth and sixth segments on each side is a band of pearly- 
' white scales which appear on the dorsum but do not meet. 
Male. —The male differs in having no white scales on the scutellum, no 
white patch on the dorsum of the second segment and very slightly 
marked, lateral bands on the fourth, fifth and sixth segments. The lateral 
scales on the branches of the second vein are rather more clavate than in 
the female. The antennae are pilose, the ungues equal and simple. The 
lobes bearing the claspers are very conical in shape the eighth segment 
much enlarged laterally but the finer details of the genitalia cannot be 
made out in the specimen. 
16 
