MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 63 



Milliron), 1 cf, paratype, genit. slide 5320 (BMH). East Borneo, 

 Balikpapan, 50 m, 18.X.1950, Mentawir River (A.M.R. Wegner), 

 1 cf, holotype, genit. slide 4575 (LM). 



Rather distinct from S. escharota by the absence of well-defined 

 dark terminal and dorsal patches; characteristic by the presence of a 

 postmedian discal black spot. 



Sisona Snellen, 1901, new status 



Sisona albitibiana Snellen, 1902 



GraphoUtha (Sisona) albitibiana Snellen, 1902, Tijdschr. Ent., vol. 44, p. 69, pi. 

 5, fig. 2, 2a, b, c (cf ?), Java (part: cf 18 mm, not cf 15.5 and 16.5 mm, 

 not 9). 



To prevent further confusion, a lectotype of this species is selected 

 herewith. It is the unique male specimen, the type of the original 

 colored figure, labelled as follows. "W. Java, Depok, 1886, cf" 

 (in Piepers' hand?), "G. (Sisona) Albitibiana m." (in Snellen's hand), 

 "Museum Leiden. GraphoUtha albitibiana. Det. Snell." slide 2629. 

 My lectotype label. 



Three more syntypes of the original series belong to Sycacantha 

 inodes perspicua, new subspecies, described above. 



Bactra Stephens, 1834 

 Key to the Philippine Species of Bactra 



1. Males 2 



Females 5 



2. Valva short and rounded, cucullus with large marginal spines (subgenus 



Nannohactra) B. phaulopa 



Valva not thus (subgenus Chiloides) 3 



3. Sacculus rounded, corona formed by long equal spines . . . . B. coronata 

 Sacculus not thus 4 



4. Sacculus with a conical lower (rostral) extremity, ending in a cluster of curved 



spines B. orbiculi minax 



Sacculus with an oblique transverse series of spines B. venosana 



5. Sterigma weak, aciculate (subgenus Nannohactra) B. phaulopa 



Sterigma developed, more or less sclerotized (subgenus Chiloides) .... 6 



6. Sterigma, two oval plates joined medially B. coronata 



Sterigma more or less Y-shaped B. venosana 



Subgenus Chiloides Butler, 1881 



Bactra (Chiloides) coronata D'akonoff, 1950 



Figure 535 



Bactra coronata Diakonoff, 1950, Bull. British Mus. Nat. Hist., Ent. ser., vol. 1, 



p. 286, pi. 5, fig. 17 (&, Java). 

 Bactra (Chiloides) coronata. — Diakonoff, 1956, Zool. Verh., no. 29, p. 33, figs. 34-36 



(cf 9, Java, Borneo, Philippine Is.); 1964, Zool. Verh., no. 70, p. 37. 



