157 
1941] New Species of Syrphidse 
black, and is partly black pilose. The abdominal segments 
differ. 
Phalacromyia bipunctata n. sp. 
Male. Length 8 mm. 
Head: eyes with upper facets enlarged, contiguous for 
twice the length of the second antennal joint, densely pale 
yellow pilose, their pile almost as long as depth of third 
antennal joint. Antennae pale orange brown, the third joint 
at least twice as long as wide, rounded at the tip with a slight 
indication of a dorsal excavation. Arista yellowish with 
darkened apex and thirteen to fourteen bristles dorsally. 
Face and cheeks entirely pale shining yellow, the knob small 
and evenly rounded with a number of short yellow bristles 
and some longer yellow hair on the sides of the face near 
the middle. Occiput yellow, yellow pilose. Thorax: dorsum 
shining light yellow with faint indications of darker vittae, 
the long, thick, erect pile and the lateral and scutellar bristles 
all golden yellow. Scutellum with a small brown spot on 
either side of the flat depression, the basal roughened areas 
slightly wider than long. Pleurae yellow translucent. Abdo- 
men: upon the base pale translucent, yellowish brown as far 
as the middle of third segment where the posterior edge of 
the light coloration is trilunate. Remainder of abdomen 
shining brownish or blackish. Legs: all the femora pale 
brownish yellow except narrowly at the tips, the tibiae 
brownish, darker apically and the tarsi brownish. Wings: 
and stigma except a tiny brown spot at the base tinged with 
greenish yellow. 
Female. Similar, a faintly suggested brown stripe on 
cheeks, a lunate depression in the middle of the shining 
yellow front. There is also a suggestion of brown at each 
basal corner of the scutellum where there is a rugose depres- 
sion suggesting V olucella chalybescens. Abdomen subtrans- 
lucent greenish beyond the middle of the second segment. 
Tibiae and tarsi somewhat more blackish. 
Several specimens, Pastorea, Paraguay, Jan. 1922 
(Donald Wees collector). Type, male, allotype female and 
paratype in the collection of the Museum of Comparative 
Zoology; three paratypes in the author’s collection. 
