HETAERINA 263 
ture. The females differ by generally paler coloration, better developed 
stripings upon sides of thorax, little development of ruby color upon 
wing bases, and by a shorter and stouter abdomen. 
One species, H. americana, is wide ranging and variable. Four other 
Sonoran species occur on our southern border. 
The nymph (Ndm. ’03, p. 227) is a long legged, sprawling creature 
that clings to the trash in the edges of the current in slow streams. The 
median lobe of the labium is cleft only to the level of the bases of the 
lateral lobes. The lateral margins of abdominal segments 7—9 end in 
small flattened lateral spines. The dorsum of the prothorax has two 
angulate teeth each side. 
KEY TO THE SPECIES (after Calvert) 
Adults (Males) 
PPE SM RIGURZECU fis y Si fv skths Eom a a tach Mey d Vimurll |g AB: 2. 
Basal spot of fore wing red, of hind wing brown..... PALIN TK 4, 
2 Labrum partly yellow; inferior appendage equal one half of su- 
ORE ee tee ie eat ete ce ales te Tate 3. 
Labrum wholly black; inferior appendage equals one third of 
SUUTCTEESIUOT Sg GAD Oe West Slee DE em a a a sempronia, p. 263 
3 Wings with only a small basal median spot black. vulnerata, p. 263 
Wings with black across whole base.......... americana, p. 264 
4 Red spot of wing not bordered with brown...... tricolor, p. 265 
Red spot bordered with brown.................... titia, p. 265 
252. Hetaerina sempronia Hagen 
Hag. ’53, p. 45: Mtk. Cat. p. 32. 
Length 46 mm. Expanse 60 mm. ; Atl. Coast, Tex. 
Face metallic. Thorax dull bronze with narrow pale lines on the three lateral 
sutures conjoined below with the yellow of the under side. Wings hyaline, stigma 
black. Apex of hind wing with a large brown spot; basal spot of fore wing short, 
commencing at median vein, ending a little beyond the quadrangle; that of the 
hind wing still smaller, does not go past anal vein. Legs black. Abdomen black. 
253. Hetaerina vulnerata Hagen 
Hag. ’53, p. 40: Mtk. Cat. p. 34. 
Length 48 mm. Expanse 66 mm. Ariz. 
This is a black and brown and copper bronze species with bright red wing 
bases. The face is blackish above on postclypeus and in middle of labrum at 
base; else yellow. Basal segments of antennae yellow ringed with black. Pro- 
thorax copper bronze with black bordered carinae. A pale streak narrowly 
