Male genitalia. Aedeagus (figs. 131, 
132) with basal sclerite reduced to 
narrow sclerotized strip, widely 
separated from distiphallus complex; 
sperm pump exceptionally large, 
slightly longer than aedeagus. 
Host/early stages. Unknown. 
Holotype m. , Virginia, Giles Co., Stony 
Cross, 2,000 ft, 26.V.62 (J. R. 
Vockeroth), in CNC. 
Remarks. Although this species 
appears to be a typical Melanagromyza , 
the male genitalia are aberrant, 
particularly in the form of the basal 
sclerite, indicating that it occupies 
an isolated position within the genus. 
Melanagromyza verbesinae Spencer, 
new species 
(Figs. 104, 105) 
Head. Frons 1.5 times width of eye, 
not projecting above eye in profile; 2 
ors, 2 ori, latter twice as wide apart 
as ors, orbital setulae numerous, in 
several rows, those nearest eye margin 
reclinate, inner rows more proclinate; 
orbits broad, inner margin parallel to 
eye margin; ocellar triangle with apex 
not reaching level of upper ori; gena 
0.25 height of eye, this distinctly 
pilose in male; 3d antennal segment 
small, round, arista finely pubescent. 
Mesonotum. 2 dc , acr numerous, in 8-10 
rows • 
Wing. Length in male 2.1 mm, inner 
crossvein at center of discal cell, 
last section of M 3+4 about 0.4 
penultimate. 
Color. Ocellar triangle and orbits 
weakly shining; mesonotum distinctly 
matt, only weakly shining viewed from 
rear; abdomen more greenish; squama 
and fringe white. 
Male genitalia. Aedeagus as in 
figures 104, 105; 9th sternite with 
narrow sidearms and slightly extended 
hypandrial apodeme, somewhat curving 
ventrally . 
Host/early stages. Verbesina alterni - 
folia , almost certainly other species 
in the genus and possibly related 
genera. Larva internal stem borer; 
puparium straw colored, posterior 
spiracular plates heavily chitinized, 
closely adjoining, only narrowly 
divided, each with ellipse of about 12 
bulbs around strong central horn. 
Holotype m. , Ohio, Portage Co., 
Jennings Woods, 6 miles NE of Rayenna, 
Coll. 5.V.69, emerged 21. III. 70 (D. 
Witwer); paratypes 2 m. , Tennessee, 
Hamilton Co., East Ridge, 6 and 9.V.52 
(G. S. Walley); Texas, Kerr Co., 
Kerrville, 1 m. , 10. IV. 59 (J. F. 
McAlpine); 1 m. , same locality, 
emerged 10. XI. 69. Holotype in USNM, 
paratypes in CNC and KAS. 
Remarks. This species most closely 
resembles M. vectabilis known from 
Florida and the Bahamas. Because it 
belongs to the large group of small 
greenish species, positive identifica- 
tion may only be possible from the 
male genitalia. 
Melanagromyza virginiensis Spencer, 
new species 
(Figs. 58, 59) 
Head. Frons narrow, little wider than 
eye, not projecting above eye in 
profile; 2 reclinate ors, 2 inclined 
ori, ors and upper ori equidistant, 
distance between ori double that 
between upper 3 bristles, orbital 
setulae in 2 rows, inner row partially 
proclinate, row nearest eye margin 
more reclinate; ocellar triangle 
narrow, apex extending to level of 
upper ori; gena deepest in center, 
narrow, 0.2 height of eye; eye in male 
pilose above; 3d antennal segment 
small, round, arista distinctly 
pubescent, long, only slightly shorter 
than height of eye. 
Mesonotum. 2 dc , acr in about 8 rows. 
Wing. Length 2.75 mm in male, inner 
crossvein slightly beyond midpoint of 
discal cell, last section of M 3+4 
0.67 of penultimate. 
248 
