






XVII—THE 
BORKHAUSENIA IDIOGAMA. 
(Borkhausenia idiogama, Meyr., Trans. N.Z. Inst., lv., 661.) 
(Plate XXIX., fig. 31 9.) 
This very dull-looking species has occurred on the 
lower slopes of Mount Egmont. 
The expansion of the wings is nine-sixteenths of an inch. 
The fore-wings are dull bronzy-grey, in female paler towards the 
apex; there is a blackish spot on the fold at about 4 and another 
in the disc beyond the middle, continued as an obscure bar as 
far as tornus. The hind-wings are bldckish-grey with slight 
bronzy reflections. 
Apparently variable in respect of the distinctness of 
the discal markings. 
The perfect insect appears in January and may be 
looked for in sub-alpine serub about 3,500 feet above sea- 
level. 
BORKHAUSENIA PRONEPHELA. 
(Borkhausenia pronephela, Meyr., Trans. N.Z. Inst., xxxix., 119.) 
(Plate Xextx, fie. 28.) 
This rather sharply-marked and distinct species was 
discovered at Invereargill by Mr. Philpott. It has also 
occurred at Bluecliff. 
The expansion of the wings is slightly under = inch. The 
fore-wings are brownish-ochreous irregularly clouded with dark 
brownish-grey especially towards the base; there is a very. con- 
spicuous wavy pale yellow streak along the dorsum, partially 
edged with white and containing a well-defined blackish spot 
before the middle; a rather conspicuous discal dot is situated 
beyond the middle of the wing, and an obscure wavy transverse 
line extends from the costa before the apex to the tornus. The 
hind-wings are pale grey. The head and thorax are yellowish. 
The palpi are yellow with the lower half of the second joint dark 
brown. 
The perfect insect appears from October till February, 
and frequents the outskirts of the forest. 
BORKHAUSENIA CHLORADELPHA. 
(Borkhausenia chloradelpha, Meyr., Trans. Ent. Soe. Lond., 1905, 
239.) 
(Plate XXX., fig. 4; Plate III., fig. 29 larva.) 
This pale-coloured but distinct species is very common 
in the neighbourhood of Wellington. It has also occurred 
at Christchurch and Dunedin. 
The expansion of the wings is slightly under # inch. 
fore-wings, which are rather elongate with the termen very 
oblique, are pale whitish-ochreous with a brownish-ochreous 
shading along the fold, a wavy longitudinal band along the dor- 
sum being nearly white; there iS a rather elongate discal dot on 
the fold at about 4, another in the dise slightly beyond it, and a 
third at about §; there is often a sprinkling of brown scales just 
before the termen. The hind-wings are very pale whitish-ochre- 
ous with a faint grey discal dot. 
There is considerable variation in the depth of the 
ground colour and in the intensity of the discal dots which 
are sometimes absent. 
The larva, which was discovered by Mr. R. M. Sunley, 
is about } inch in length. The head is very small blackish- 
brown and horny; the second segment is also entirely 
The 
TINEIDAE. 
horny and very much constricted behind; the third segment 
has two large horny plates and the fourth segment four 
very minute ones; the rest of the body is very stout, soft, 
dull blackish-brown with a darker dorsal line. Each seg- 
ment has at least four distinct oblong pale patches, each 
patch having in its centre a minute horny wart. This 
larva lives through the winter. It is subterranean in its 
habits, feeding on the roots.of grass amongst which it con- 
structs numerous silken tubes. 
The pupa is enclosed in a frail white silken cocoon 
situated in one of the burrows formed by the larva. 
The perfect insect appears in October and is common 
until the end of December. It frequents gardens and 
other cultivated places, very frequently entering houses. 
It is extremely abundant at Karori, where it is constantly 
seen resting on window panes. 
BORKHAUSENIA HASTATA. 
(Borkhdusenia hastata, Philp., Trans. N.Z. Inst., xlviii., 422.) 
(Plate XXX., fig. 5.) 
This very distinct species was discovered by Mr. Phil- 
pott at Seaward Moss, near Invercargill. 
The expansion of the wings is about } inch. The fore-wings 
are rather elongate with the dpex acute and the termen very 
oblique; pale whitish-ochreous faintly tinged with grey except 
on the dorsum; there is a faint blackish streak on the fold; a 
distinct black discal spot and a series of black terminal dots. The 
hind-wings are very pale greyish-white. 
This species closely resembles Borkhausenia chlora- 
delpha, but may be easily distinguished from that insect 
by its much narrower and more pointed fore-wings, greyer 
colouring and darker terminal and, discal dots. The whit- 
ish-ochreous dorsal band in B. chloradelpha is also much 
broader and its upper outline iy distinctly notched. 
The perfect insect appears in October. It is apparently 
very rarely met with. 
Described and figured from a specimen in Mr. Phil- 
pott’s collection. 
BORKHAUSENIA VESTITA. 
(Borkhausenia vestita, Philp., Trans. N.Z. Inst., lvi., 392.) 
(Plate Ui, fig2 4 74:3) 
This rather stout-looking species was discovered by 
Mr. S. Lindsay, on the Hunter Mountains. 
The expansion of the wings is # inch. The forewings are 
dull ochreous, more or less sprinkled with blackish scales; there 
is a broad irregular pale ochreous patch, extending from base to 
tornus and occupying the whole of the plical region; a conspicu- 
ous black spot on the fold, and two others above this; a black 
shading along costa near base, and an obscure, strongly sinuate 
sub-terminal line; the cilia are pale brown, mixed with ochreous. 
The hind-wings and cilia are blackish-brown. The head is bright 
ochreous, and the body ochreous-brown. 
The perfect insect appears in January. 
Described and figured from a specimen submitted by 
Mr. Philpott. 

