469 



ENTOMOLOGICAL PROGRAM. 



A New Grass LeafroUer, Omiodes giffardi (Lepidoptera). 



BY O. H. SWEZEY. 



Omiodes giffardi n- sp. 



Male. 27-32 mm. Antennae brownish fuscous; palpi brownish fuscous, 

 basal segment white below; head and thorax pale fuscous suffused with 

 whitish ; abdomen pale fuscous with white apical margins to segments, 

 anal tufts of male dark fuscous; forewings fuscous suffused with pure 

 white, the costa conspicuously fuscous, a darker fuscous oblique streak 

 from tornus to cell and following the dorsal side of outer half of cell, 

 then across end of cell, including discocellular fuscous dot ; a fuscous dot 

 about middle of cell; second line white nearly straight across wing at 

 about three-fourths, followed by a stronger fuscous streak; a terminal 

 series of dark fuscous triangular dots, situated between veins ; cilia 

 whitish fuscous, a little darker at base. Hindwings light fuscous, with 

 a darker discal dot and a submedian whitish line bordered on both sides 

 with darker fuscous; a nearly continuous terminal fuscous line; cilia as 

 in the forewings. Legs cinereous. 



\>ry closely similar to 0. accepter (Butl. ), but differs espe- 

 cially in the pure white suffusion of the forewings, whereas 

 the whitish marking's in accepfa are with an ochreous tinge ; 

 the dark fuscous markings are about the same, but appear 

 more distinct in giffardi on account of the contrast with the 

 white suffusion. In giffardi, the dark fuscous suffusion beyond 

 second line is not interruptedly paler on the veins as in accepta. 



Described from three male specimens. Two collected at 

 light by Mr. W. M. Giffard at his bungalow, Kilauea, Hawaii, 

 September, 1911, and September, 1919. One reared by the 

 writer from larva on a grass (Isachnc distichophylla) at 

 Kilauea, Hawaii, April 22, 1920. The caught specimens are 

 somewhat broken ; the reared specimen is the type. 



Holotype in collection of Hawaiian Entomological Society ; 

 paratypes in collection of Plawaiian Sugar Planters' Experi- 

 ment Station. 



The first two caught specimens were considered by the 

 writer as specially white forms of accepta (See Proc. Haw. 

 Ent. Soc, 11:235, 1913). When he discovered several larvae 

 on the grass above mentioned at Kilauea, and succeeded in 



Proc. Haw. Ent. Soc, IV, No. 3, September, 1921. 



