44 
MICROLEPID OPTERA OP NEW GUINEA 
Limen indefinite, lateral excavations small, lateral projections short, 
dorsally a moderate, somewhat sclerotized band. Colliculum short, not 
sclerotized on ventral side. Cestum with three torsions, but not coiled, 
terminal fold rather long. Signum small. Eighth segment tubular. Ovipositor 
lobes slender, elongate. (Slide No. 321 D.) 
Araucaria Camp, 800 m, March 29, 1939 (holotype, male). Sigi Camp, 
1500 m, February 19, 1939 (allotype, female). Two specimens. 
We had the opportunity to compare the holotype of the present species 
with a male specimen of Zacorisca daphnaea Meyrick, from a collection 
of Papuan Microlepidoptera, received for identification from the British 
Museum. The latter specimen is labelled: “Owgarra, B. New Guinea, 
A. S. Meek”, and therefore must be a topotype, possibly even an over- 
looked cotype specimen. The comparison of this specimen with aptycha 
revealed that they agree supperficially very closely, except for the presence 
of a costal fold in daphnea and entire absence of it in aptycha, and for 
minor differences tabulated below. 
aptycha 
Face and scape of antenna below: 
bluish-black. 
Legs: indigo-blue-black. 
Costal fold absent. 
Apical brassy area of fore wing 
becoming blackish towards anterior 
edge, along costa gradually narrowed 
and produced anteriorly almost to 1 / 4 , 
thence continued as a narrow blue- 
black costal line. 
No discal markings. 
Hind wing with rather well-defined 
whitish-blue discal area, leaving a 
broad band of brassy ground colour 
along termen to tornus. 
daphnaea 
Face and scape of antenna below : 
white. 
Anterior and median tibia suffused 
with white. 
Costal fold present. 
Apical brassy area unicolorous, 
only slightly produced anteriorly and 
not reaching middle of costa, thence 
continued as a blue-black costal line. 
An elongate-ovate ill -defined blotch 
below middle of wing from beyond 
base to before middle: grey densely 
irrorated with white. 
Basal 3 / 4 of wing grey, this colour 
extending over margin of wing as far 
as termen above tornus ; a white 
longitudinal streak in cell only. 
The male genitalia of aptycha and daphnaea show important differences 
of almost subgeneric rank (cf. figs. 23 and 24a). While in the latter they 
have acquired the high development so characteristic of this genus, the 
male genitalia of Z. aptycha are of simplier type and show a transition 
towards the type of Chionolhremma. 
In Z. daphnaea (fig. 24a, genitalia slide No. 1160 D) the tegumen is 
more robust; the uncus is less broad, narrowed towards top; the gnathos 
is heavy, hooked, with broad sclerotized arms; the aedoeagus is gradually 
curved instead of pistol-shaped ; the vinculum is broader and more rounded ; 
the ventral corema is much larger. 
