106 
pair of macrochaetae, second and third segments of abdomen 
destitute of diseal macrochaetae, renter destitute of short black 
spines 4. 
With only three sternoplenral macrochaetae, scutellum black, front 
pulvilli of male slightly longer than the last tarsal joint 2. 
2. Third joint of antennae of male live, in the female four, times as long 
as the second, front of male tliree-fonrths, in the female one and 
one-fifth times, as wide as either eye; abdomen black, narrow 
bases of last three segments gray pollinose, second and third 
^ments destitute of diseal maerocha'ta\ middle tibia' each 
bearing a single one on the front side near tin 1 middle; length, 
5mm. Eastboro, Conn., and Tifton, (la. (Insecta Sanndersiana, 
Vol. I, p. 299; 1856: Tachina.) aneilla Walk. 
Third joint of antenna' in both sexes two and one half times as long 
;i> the second, front in the male one half, in the female tliree- 
fonrths, as broad as either eye, three postsutural macrochaetae, 
scutellum bearing three pairs of long marginal ones, destitute 
of a short apical pair, second and third segments of abdomen in 
the male bearing diseal macrochaetae, wanting in the female, 
venter of these segments in the female thickly studded with 
short black spines 3. 
3. Abdomen in both sexes yellowish except a dorsal vitta. a fascia on 
the third segment, which sometimes covers it. ami the base 
of the fourth, which are black ; length, <> to 9 mm. Tifton, (la., 
and Jacksonville and Lake Worth, Fla. | Proc. Acad. Nat. Sci. 
Phi la., p. 1310; September. 1S!>.~>: Achcetonenra.) . ..rubentis Ooq. 
Abdomen of male black, a spot on each side of first three seg- 
ments and the narrow apex of the fourth, yellow; in the female 
black, the narrow apes of the fourth segment yellow; length, 
7 to 8.5 mm. Southern California and Allende, Mexico. From 
the type specimen. (Insect bile, Vol. 1. p. 332; May, 1889: 
Tachina \ Masicera], Proxpherysa comosa van derWulp, Biologia 
< Ynt -Amer.. Diptera,Vol. II, p. 11!): May, 1890.) . .armigera Coq. 
4. Second segment of abdomen destitute of a marginal pair of macro- 
chaetae or else the sides of the third segment largely or wholly 
yellow 6. 
Second segment bearing a marginal pair of stout macrochaetae, abdo- 
men black, at most with a yellow spot on each side of the second 
segment, third joint of antennae of male from five and one half 
to seven, in the female from three to four and one half, times as 
long as the second 5. 
5. Front in the male one and one half, in the female one and three- 
fourths, times as wide as either eye, front pulvilli of male three- 
fourths as long as the last tarsal joint; length, G to 9 mm. 
Michigan; Missouri; Texas; California, and Pullman, Wash. 
(In Scudder's Butterflies of New England, Vol. Ill, p. 1923; 
