188 DRAGONFLIES OF NORTH AMERICA 
precipitately, and it was a long time before they returned again. This is a 
northern species and its presence in Kentucky is probably explained by the high 
altitude of the region where it was found and the proximity of the mountains. 
149. Somatochlora provocans Calvert 
Caly. ’03, p. 39: Mtk. Cat. p. 1382: Mtk. 711, p. 176: Walk. ’25, p. 109. 
Length 54 mm. Expanse 74 mm. N. J. and Pa. 
A large slender species conspicuously marked with yellow. Face yellowish 
below with metallic violet reflections above. Labrum yellow with a black border; 
postclypeus yellow with two impressed brown dots. Thorax metallic green with 
violet reflections and rather thin pubescence. Lateral spots well developed, 

tenebrosa provocans 
yellow, long, straight edged in front with a small additional and intervening pale 
streak through spiracle. Wings hyaline, costa yellow, stigma brown. Legs black, 
paler basally. Abdominal segment 1 with posterior lateral edge yellow; 2 with 
three diverging inferior vertical yellow streaks on side of the segment, the middle 
one the broadest; 3 with basal dorsal and ventral triangles pointing rearward on 
sides above and below the midlateral margin. Remainder of abdomen greenish 
black. Appendages blackish. 
Apparently little is known concerning the habits and breeding place 
of this species. Calvert ’03 states that it usually keeps at a considerable 
distance above one’s head, both when in flight and at rest. 
150. Somatochlora filosa Hagen 
Hag. ’61, p. 186: Mtk. Cat. p. 180: Walk. ’25, p. 112. 
Length 68 mm. Expanse 84 mm. N. J. and Md. to Fla. 
A fine big southern species. Occiput, top of frons and vertex blue. Face 
brownish; labrum bordered below with black. Thorax metallic green with the 
usual 2 lateral stripes and an intervening one, abbreviated above. Legs black, 
front femora brown. Wings hyaline, stigma tinged with amber. Abdomen black; 
segments 1 and 2 with apical annuli; 2 with a median one also, dilated to form 
paired ventral spots; 3 with elongated paired ventral spots, triangularly pointed 
to rearward. 
