258 Revision of the Bomhylid Genus Aphoebantus. 



Loew, and described it as such, but there can be no doubt of its be- 

 longing to a distinct species. 



Aphoebantus tardus n. sp. — Female. Black. Front and face 

 gray pollinose, sparse 3'ellow tomentose and black pilose. Pro- 

 boscis not projecting beyond the oral margin. Antennge with the 

 first two joints sparse black pilose; st3'liform portion of the third 

 joint once and a half as long as the thickened basal part. Occiput 

 white tomentose, that above ^elloNvish. Thorax yellow tomentose 

 and sparse short white pilose, the bristles also white ; pleura white 

 tomentose and pilose. Scutellum sub-opaque, yellow tomentose, 

 the bristles also yellowish. Abdomen yellow tomentose, that on 

 apex of each segment white; dorsum very short sparse white pilose, 

 that on the sides longer and more dense; venter white tomentose 

 and pilose. Legs white tomentose, the bristles yellowish ; hind 

 femora each with two bristles but no long hairs beneath ; middle 

 femora each with one or two bristles in front and numerous rather 

 long hairs behind. Halteres wholly light 3^ellow. Wings hyaline, 

 apex of subcostal cell yellowish. 



Male differs from the female in having the pile of thorax and 

 abdomen longer and more dense. E^'cs meet each other for quite a 

 long distance on the front. Hypopygium moderate, not dilated 

 below, equal in length to the last two abdominal segments. 



Length 5 to 9 mm. Los Angeles, San Diego and Kern counties, 

 Cal. Four males and five females, in May and June. 



Aphoebantus marcidus n. sp. — Female. Black, the tibiae and 

 basi of tarsi yellowish. Front and face gray pollinose, sparse white 

 tomentose and pilose. Proboscis not projecting be3^ond the oral 

 margin. Antennae lightly gray pollinose, sparse white pilose; stvli- 

 form portion of the third joint equal in length to the thickened 

 basal part. Occiput dense white tomentose and sparse white pilose. 

 Thorax white tomentose and sparse white pilose, the bristles also 

 white; pile and tomentum of pleura white. Sctitellum opaque, 

 v^hite tomentose, the bristles -a4so whi^. Abdomen white tomen- 

 tose and rather abundant white pilose ; ventor snow-white to- 

 fnentose and pilose. Legs white tomentose, bristles of tibiae red- 

 dish; hind and middle femora with many long hairs but no bristles 

 below. Halteres yellowish-white, the stalk darker toward the base. 

 Wings wholly hyaline. 



Male differs from the female in having the tomentum of the 

 front, thorax, scutellum and abdomen light 3'ellowish, bristles of 

 thorax and scutellum also yellowish. Ej-es meet each other for some 

 distance on the front. H3^popygium large, scarceU- dilated below, 



