FAM. EMPIDID/E 63 
symmetrical pygidium bearing an erect dorsal basal part. Anterior legs normal, bristleless, hind femora 
elongate, rather clavate, beneath toward the apex with four rows of thornlike spines, those of the lateral 
rows longer, hind tibiz geniculate, compressed to an edge opposite the femoral spines, tarsi not swollen. 
Wings broad, anal angle broadly rectangular, auxiliary vein rather weak and close to the long first vein, 
costa interrupted at the fourth vein, its basal bristle very weak, basal cells as long as the large discal cell, 
third vein simple, posterior veins shortened by the enlargement of the discal cell, anal crossvein truncat- 
ing the anal cell, the anal vein weak but usually attaining the margin. 
Tyne species : CE. Lybotina, Fallen, by Westwood' s designation. Lundbeck records f/avifes as 
having been bred from decaying wood. The species of GZdalea have yellow legs, the hind pair more or 
less darkened. The body is usually shining black with yellow pubescence and bristles. They are 
sluggish in flight and occur in shady woodlands, but are not commonly met with. 
KEY TO THE NEARCTIC SPECIES OF CEDALEA 
1. Third antennal joint relatively broad and tapering, four times as long 
as broad and eight times as long as the style; thorax pollinose; 
intercalary vein usually short . . . . VETUS s - . . QE. rRUINOSA, Coquillett. 
"Third antennal joint elongate cylindrical, e more than Íodt times 
as long as broad and the style much shorter; thorax shining; 
intercalary vein complete . . . . . í ; PESO QR EUN AN use ESTER. 
2. Antennal style almost invisible ; upper facets of fo) Sivinisy VEN 
halteres fuscous, wings with strong stigma. . . - QE. ASTYLATA, nov. sp. (1). 
Antennal style visible, about one-fifteenth as long as ile third Joni; 
Gu v unssbhaeeleswve tutes cen ced aM M MC MC EE 
3. Body black; discal cell nearly three times as long as wide, its sides 
parallel; stigma distinct; upper facets of jf obviously larger . . CE. onrogwsis, Melander. 
Pleurz at least testaceous; discal cell somewhat widened apically ; 
stigma suffused; upper facets jf scarcely larger (lanceolata, mov.sp.) . . . . . . . . . 4. 
4. Mesonotum, abdomen and hind tibie blackish. . . . . . . . QCE.LANCEOLA1A, nov. sp. (2). 
(1) CEdalea astylata, nov sp. — Male. Length 3 mm. Body polished black, legs including the coxze pale 
yellow, the hind tibie brownish ; antennal style microscopic; halteres fuscous. Proboscis short, black, scarcely protruding 
beyond the oral opening ; third joint of the antenne cylindrical, eight times as long as wide and about twenty times 
as long as the almost invisible style ; upper facets conspicuously larger than the lower. Thoracic hairs rather sparse, 
scutellum bearing six brown bristles, prealar bristle brown ; pleure highly shining. Pygidium rather long. Hind 
femora with the usual long pale hairs above and the black setze beneath, hind tibiae blackened beyond the geniculation, 
hind tarsi piceous, the metatarsi not paler, apical joints of the anterior tarsi brownish. Wings with light infuscation, 
stigma very distinct, veins narrow but dark brown, sections of the fourth vein proportioned 0.7 : 0.2 : 1 : 1, of the 
fifth vein, 1 ; 0.6, intercalary vein complete. 
One specimen ; Black Rock Mountain, Rabun County, Georgia, May, collected by J. Chester Bradley. 
(2) CEdalea lanceolata, nov. sp. — Length 3 mm. Head, mesonotum and abdomen black, pleure and often 
the humeri yellowish. Antenna black, the third joint slightly tapering, eight times as long as broad and twelve 
times as long as the thickened style; proboscis black, projecting nearly as far as the head-height. Thorax shining, 
mesonotal yellow hairs rather conspicuous. Legs yellow, the hind tibiae beyond the knee, the hind tarsi except the 
base and the anterior tarsi toward the tip brownish, subgenual carina of the hind tibi; black, the spinous setze and 
setula of the hind femora strong. Halteres pale yellow to brownish. Wings very lightly infumated, the elongate 
stigma darker, veins dark brown, discal cell widening distally so as to be less than two and a half times as long as 
wide, the last two sections of the fourth vein proportioned 1 : o.8, of the fifth vein, 2 : 1, intercalary vein complete. 
Numerous specimens ; type from Friday Harbor, Washington. June 29, 1909; paratypes from Olga, Tacoma, 
Everett, Index, Tulalip, Lake Crescent, Pluvius, Ilwaco, Mt. Rainier, La Center, Lake Chelan and Glenwood, 
Washington; Collins, Moscow Mt. and Priest Lake, Idaho; Perma and Glacier Park, Montana, and Mt. Hood, 
Viento and Eagle Creek, Oregon. 
