124 
PRELIMINARY LIST 
about 3.80 mm. long, with a few short capitate hairs, and a few sensoria on the third joint. 
Beak reaching tlie second coxae, tip black. Legs and antennae dusky. Style long and 
falchion sharp ” 
Hotchki-s, July 24tli, in small colonies on underside of 
leaves of Asclepias speciosa (Gowen). 
Nectarophora erigeronensis Thos. 
Fort Collins, July 22d, on Lactuca pulchella (Cowen). 
Nectarophora rosae L. 
Estes Park, July 16th, on rose (Gillette). 
Nectarophora riidbeckiae Fitch. 
4 ort Gollins, Jidy 18tli, on Solidago; Hotchkiss, on an 
unknown composite (Cowen). Ho. 896 of the Custer County 
list may belong here (see Cockerell, 10). 
Nectarophora sp. 
“Winged viviparous female: Length 2.50 mm. To the tip of the wings 4.75 mm. Color 
green, thorax yellowish. Third joint of antennae with a slight row of sensoria, remaining 
joints smooth except for a few short hairs, seventh joint annulated, length of joints III 
OM mm., iV 0.48 mm., V 0 50 mm., VI 0.10 mm., VII 1.00 mm. Stigma short and broad. 
ouey tubes imbiicated, cylindrical, 0.35 mm. long. Style 0.15 mm. long. Apterous vivip¬ 
arous female: Length about 2.5 mm. Mostly green. The eyes, ends of joints of anten¬ 
nae, tip of beak, and tarsi, black. Lower ends of femora, and tips of honey tubes darker 
tlian the body.” 
Fort Collins, July 21st, on Gaura parviflora (Cowen). 
Nectarophora sii. 
“Only wingless individuals, singly, or in small colonies. Wholly green, except that 
the eyes, tarsi, and ends of joints of antennae are black. Antennae longer than the 
body.” 
Horsetooth Mountain, July 23d on Arctostaphylos uva-ursi 
(Cowen). 
Nectarophora sp.* 
Winged viviparous female: Length 2.70 mm. Color apparently uniform green. 
Stigma elongate, sharp pointed. Apterous female: Length 3.20 mm. Antennae longer 
than the body. Beak short, not reaching the second coxae. Honey tubes about 1.00 mm. 
long. Style 0.45 mm. long.” 
Estes Park, July 16tli on Epilobium spicatum (Gillette). 
Nectarophora sp.* 
“Winged viviparous female: Length 2.20-2.40 mm. Wing about 3.40 mm. long, 
uniformly pale, perhaps green, in life. Beak short, about reaching second'coxae. Third 
joint of antennae with a number of round sensoria, length of joints III 0.60 mm., IV 0.48 
mm., V 0.43 mm., VI 0.16 mm. First branch of the cubital closer than usual to the origin 
of the cubitai. Honey tubes 0.65 mm. long. Style about 0.25 mm. long.” 
^Descriptions from alcoholic material. 
