268 



SCHULTZE. 



LIFE HISTORY. 



Egg laid 

 Egg hatched 

 First molt 

 Second molt 



1907. 





November 



17 



November 



27 



November 



30 



December 



2 



Third molt 

 Fourth molt 

 Pupated 

 Adult emerged 



1907. 

 December 5 

 December 9 

 December 15 

 December 19 



Pupa (PL V, fig. 8) : Exterior line of the pronotum oval and with 

 a marginal row of spinules of which two pairs, anteriorly, are very prom- 

 inent and twice as long as the others. Lateral margins of the first to 

 sixth abdominal segments lamellated, semitransparent and surrounded 

 by a row of spinules of which those at the point are longer than the 

 others, the lamellation decreasing in size toward the sixth segment. 

 Stigmata white, tracheae slightly excrescent, but very long on the fourth 

 segment. The pupa is of the same color as the larva. This species is 

 the most common of those described in this paper and is found during 

 the entire year. 



Lacoptera philippikensis Blanch. (PI. VI, fig. 3). 



Lacoptera philippinensis Blanch., Voy. Pole 8ud, (1853), 4, 321, plate IS, 

 fig. 14. 



Egg: The egg (PI. V, fig. 1) is in a thin primary case; later, under 

 a perfect cover, fastened to the leaf. There is always a large quantity 

 of excrement present on the central part of the cover. Its margins 

 show numerous, regular impressions. The egg is laid on the upper and 

 under sides of the leaves and the egg case contains only a single egg. 

 This species differs in this respect from Lacoptera excavata Bohem., as 

 Muir ' observed that the eggs of this species were laid with from two to 

 four in each case. 



Larva: The young larva of L. philippinensis Blanch, is yellowish, 

 later it turns brown, the chitinous plates on the prothoracic segment 

 being still darker. The larva (PI. V, fig. 2) has eight ^ spines on the 

 prothoracic segment, two forked pairs in front being slightly curved. 

 All the spines are irregular in shape, not straight, and have minute 

 spinules, even the very long, subanal ones having some toward the base. 

 This larva also uses its excrement in forming a solid flat, roughly 

 triangular shield or cover. As in L. excavata Bohem., at each molt the 

 old skin is worked into the shield, yet is not covered entirely with ex- 

 crement, skins of the heads and feet of different molts still remaining 

 visible. The larva is found most frequently on the upper side of the 

 leaf. 



' loc. cit., p. 8. 



^ The larva of L. philippinensis Blanch, difi'ers also in this respect from L. 

 excavata Bohem. as the latter species has only six spines on the prothoracic 

 segment (Muir, loc. cit. PI. V, fig. 27a). 



