500 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 118 
7. Scutellum with hairs or setae between the marginal bristles only. ... 8 
Scutellum with hairs widely distributed on dorsum . quinquepunctata (Say) 
ch IBN GwG 5 oc s pea melee fe ey oo 6 6 elimibatas(ihomsom) 
Eye higher than wide. .... . . . .sororeula (Czerny) 
9. Scutellum with hairs of dorsum Conant fo ne half orless . plumata (Loew) 
Scutellum with hairs widely distributed on dorsum . . . longipennis (Loew) 
Suillia loewi Garrett 
FiIGurE 2 
Suilla loewi Garrett, 1925a, p. 3.—Czerny, 1930, p. 442. 
The absence of wing infuscations and of scutellar hairs or setae 
usually distinguishes this species from others in the genus. 
Matz.—Head yellow to yellowish orange, often quite pale on face 
and genae; front with scattered setae; aristae long pubescent; cheek- 
eye ratio from 0.25 to 0.33; oral vibrissae strong, buccal setae in about 
3 irregular rows; no orbito-antennal spot. 
Thorax yellow to yellowish orange; scutellum bare except for 2 
pairs of lateral bristles; pleura bare except for sternopleuron, which 
has a strong bristle just posterior to the middle near the upper margin; 
several hairs lying near the bristle and 1 or more rows of hairs extend- 
ing down to the numerous long hairs which lie between the coxae. 
Legs yellow, becoming dark at the tips of the tarsi; anterior basi- 
tarsus with curved claw on ventral side of distal end; femora markedly 
swollen, particularly the fore and hind femora; forefemora with a 
posterodorsal row of bristles and a posteroventral row of bristles 
which merge with numerous long hairs of the ventral side; midcoxae 
with long hairs directed ventrad, intermingled with dense black 
shorter hairs which give a brushlike matted appearance. 
Wings hyaline with no infuscations; first longitudinal vein ending 
at about the level of the anterior crossvein. 
Ficures 1—24.—Structures of the male terminalia of Suillia, Allophyla, Borboropis, Orbellia, 
Tephrochlamys, and Aecothea. Pile and setulae omitted in figs. 1-13. All views 
lateral, except those of figs. 20, 22, and 24, which are ventral. Figs. 1-9, left surstyli, | 
X 25: 1, Suillia bicolor (Zetterstedt); 2, S. loewi Garrett; 3, S. limbata (Thomson); 4, 
S. sororcula Czerny; 5, S. quinquepunctata (Say); 6, S. apicalis (Loew); 7, S. longipennts 
(Loew); 8, S. plumata (Loew); 9, S. barberi (Darlington). Fig. 10, right surstylus of S. 
barberi (Darlington), X 25. Figs. 11, 12, surstyli of S. nemorum (Meigen), X 25: 11, 
left; 12, right. Figs. 13-19, left surstyli, X 25 (fig. 13) or 50 (figs. 14-19): 13, Allophyla 
laevis Loew; 14, Borboropsis fulviceps (Strobl); 15, Orbellia barbata (Garrett); 16, O. peter- 
sont (Malloch); 17, O. hiemalis (Loew); 18, Tephrochlamys rufiveniris (Meigen); 19, 
Aecothea aristata (Malloch). Fig. 20, epiphallus of 4. arista (Malloch), X 50. Figs. 21, 
22, A. fenestralis (Fallén), X 50: 21, left surstylus; 22, epiphallus. Figs. 23, 24, 4. specus 
(Aldrich), X 50: 23, left surstylus; 24, epiphallus. 
