Watt. — Leaf -mining Insects of New Zealand. 197 



Art. XXIV. — The Leaf-mining Insects of New Zealand: Part II. 



By Morris N. Watt, F.E.S. 



[Bead before the Wanganui Philosophical Society, 24th October, 1920 ; received by Editor, 

 31st December, 1920 ; issued separately, 20th July, 1921.] 



Plates XL-XLIII. 



PART II.— THE GENUS NEPTICULA (LEPID( )PTERA). 



Introduction. 



This genus is represented in New Zealand by the following eight species, 

 four of which are dealt with in the present paper : it is probable that a 

 number still remain to be found : — 



Nepticala ogygia Meyr., Trans. N.Z. Inst., vol. 21, p. 187, 1889. 



tricentra Meyr/, Trans. N.Z. Inst., vol. 21, p. 187, 1889. 



- propalaea Meyr., Trans. N.Z. hist., vol. 21, p. 187, 1889. 



- cypracma Meyr., Trans. N.Z. Inst., vol. 48, p. 419, 1916. 



- oriastra Meyr., Trans. N.Z. Inst., vol. 49, p. 247, 1917. 



- lucida Philp., Trans. N.Z. Inst., vol. 51, p. 225, 1919. 

 perissopa Meyr., Trans. N.Z. Inst., vol. 51, p. 354, 1919 



fulva n. sp., herein, p. 215. 



Main Characteristics of Genus. 

 The main characteristics of the genus are as follows : — 



The Imago. 



Head hairy, tufted ; tongue rudimentary ; antennae with basal joint 

 enlarged to form an eye-cap ; maxillary palpi rather long, folded ; labial 

 palpi short, slightly porrected. Forewings rather broad, short and coarse 

 scales, the termen clothed with long cilia and shorter scales, these latter 

 may be darker at their tips and so form one or more, more or less distinct 

 " cilial lines." Hindwings lanceolate ; frenulum multiple in both sexes. 



Within the genus there are two types of venation in the fore wing. In 

 the more primitive one the media coalesces with the cubitus for a short 

 distance from the base, then passes obliquely to the radius just beyond 

 R 2 + 3 , and anastomoses with the radius to beyond the middle of the wing. 

 In the second type the media coalesces with the ladius from the base to 

 beyond the middle of the wing. All four species dealt with in this paper 

 belong to this latter type. Fore wing : Costal vein (C) small and insignifi- 

 cant, there is no costal trachea in the pupal wing except in the more primi- 

 tive type, where it is extremely short ; subcostal (Sc) in the more primitive 

 type is connected to the costal near the base by a short oblique humeral 

 cross- vein (h), the pupal trachea is distinct and in the latter type is branched 

 near its tip; radius represented by three veins, R x and R 2 + a running 

 parallel to each other to costa, the third, R 4 + 5 , to apex, bifurcated in the 

 primitive type ; media represented by an unbianched vein (M x ) reaching 

 the wing-margin below the apex ; cubitus (Cu lb ), unbranched, and becomes 



