MICROLEPIDOPTERA OF PHILIPPENE ISLANDS 191 



Imma auraniiaca. — Meyrick, 1906, Trans. Roy. Ent. Soc. London, p. 190; 1913, 

 in Aurivillius, Lepidopterorum Catalogus, pars 13, p. 27; 1914, in Wyts- 

 man. Genera Insectorum, fasc. 164, p. 10. 



Distribution: Philippine Is., Mindanao. 



The species may be redescribed thus. Male, 47 mm. Head yellow. 

 Antenna black, pectinations over 1. Palpus yellow, basal segment 

 long, slightly drooping, upper and lower edges posteriorly and top 

 black, median segment long, slender, vertically rising, so making an 

 acute angle with the basal segment; terminal segment extremely short 

 and slender, subobtuse, black. Thorax yellow orange, a suffused 

 brown transverse band anteriorly, apex and top part of tegula brown. 

 Abdomen yellow, anal tuft black. Legs black, tibiae dark brown. 



Forewing oblong, dilated at 3/4, costa gently curved, apex rounded, 

 termen little rounded, oblique. More than basal half bright orange 

 yeUow, extreme costal edge black; apical portion brownish black, edge 

 of this color concave and somewhat u-regularly serridate, oblique along 

 upper third, almost straight and much less obUque along lower 2/3. 

 Cilia black. 



Hindwing with a large semioval orange-yellow patch occupying 

 almost 2/3 of costa and extending over 3/4 of wing breadth, anterior 

 edge almost straight, posterior gently rounded, with a slight truncate 

 prominence between veins 2-4; remainder of wing and ciha brown- 

 ish black, becoming brown along dorsum. 



Male genitalia: Tegumen moderate, submembranous, rounded. 

 Uncus slender, top bifid and hairy. Saccus (vinculum) elongate, 

 moderately broad, top rounded. Valva strongly concave, sacculus 

 forming an oval membranous inner lobe, these lobes interconnected; 

 top of sacculus sclerotized and sinuate, being a continuation of a band- 

 Uke sclerite across disc of valva, top of sacculus projecting, straight, 

 cucidlus narrow, hairy, clavate, longer than sacculus. Anellus lobes 

 distinct, subtriangular. Aedeagus very large, sclerotized, tubular, 

 little curved. 



Material examined: Lectotype, hereby selected is a specimen from 

 Walsingham collection (BM) labelled as follows: "521" (a small, 

 printed label), "Mindanao, Semper" (written in ink), "Smnhoe d.d., 

 1.1900, co-type" (a black-edged label, written in pencil, last 

 word printed). "Tineina, Tortricomorpha Felder, teste Durrant, 

 aurantiaca Semper (Sidyma), Schmett. Philipp. Het., p. 501, pi. 

 59, f. 9 (1899)" (^vritten in ink), genit. slide 4722. Two more simi- 

 larly labelled specimens (BM). 



Imma basiflava (Semper, 1899) 



Figures 820, 832-834 



Sidyma hasiflava Semper, 1899, Schmetterlinge Philippinischea Insein, vol. 2, 

 p. 550, pi. 59, fig. 8 (cf , Northeast Luzon). 



