1970] 
Matthews & Evans — Sericophorus 
4 23 
the egg is attached ventrally and more or less transversely on the 
prothorax just anterior to the fore coxae and slightly off center to 
one side (Fig. 7). According to Rayment, one anterior leg of the 
egg-bearing fly is sometimes dislocated or raised ; however, this was 
not observed in S. viridis. 
Eggs are whitish and sausage-shaped, measuring 2.5 mm long 
by 0.5 mm wide at the middle. No data were obtained on time 
required for egg hatch or larval development; however, Rayment 
( 1 95 5b ) gives the incubation period for S. teliferopodus eggs as 
between 4 and 6 days, with larval development requiring about 
12-14 days. Normally only one or possibly two new cells appeared 
to be stocked each morning, a rate possibly determined by avail- 
ability of mature eggs in the females’ ovaries. The most cells in 
a single nest that contained eggs was three. 
Larval characters. — The following description is based on two 
fully grown, non-diapausing larvae from Canberra (note nos. A 260, 
AM 217). Notes on several diapausing larvae removed from cocoons 
follow the description. 
Body length 9.5 mm; maximum width 3.3 mm. Robust, more 
tapered anteriorly than posteriorly; dorsal profile somewhat serrate, 
each segment somewhat expanded posteriorly, without distinct divi- 
sion into annulets; terminal segment rounded beyond the broad, 
ventral anal opening; pleural lobes prominent, rounded protuberant, 
the thorax without prominent accessory lobes although prothorax 
with prominent pleural lobes and with small latero-dorsal swellings 
(Fig. 12). Spiracles small, lightly pigmented; atrium lined with 
weak, irregular hexagons; opening into subatrium simple, unarmed; 
subatrium swollen, of irregular shape (Fig. 16). Integument mainly 
smooth, but entire venter minutely spinulose; each segment with a 
few very short setae dorsally, the pronotum with somewhat more 
setae than following segments (about 20, these about the same 
length as the head setae). 
Head 1.2 mm wide, 1.1 mm high (not including labrum and 
mouthparts) (Fig. 11). Parietal bands and coronal suture absent; 
top and sides of head roughened by many small convexities; antennal 
orbits small, subcircular, each bearing three minute sensilla; head 
setae sparse but moderately long, the longest ones measuring about 
60 fi ; clypeus with a double row of setae. Labrum weakly emarginate 
medially, its surface with numerous strong setae, median apical 
margin also with a few setae; margin with only a few, weak sensory 
cones, rather roughly spinulose laterally; epipharynx covered with 
