i 
HUNGERFORD: AQUATIC HEMIPTERA. 125 
Microvelia frontinalis Bueno. 
Bueno, Bul. Brookl. Ent. Soe., XI, p. 58, 1916. 
“Apterous form: Head nearly as broad as long; white pile next to 
eyes. Eyes round, small, prominent, black; ocelli close to eyes. ' 
“Antenne nearly half as long as the entire insect; joints 1 and 2 
subequal, 1 shortest, 3 longer than 2, 4 longest; joint 1 stoutest, 2 fol- 
lowing, 3 slender and 4 stouter than 3, fusiform; all joints more or less 
pilose, especially 4. 
“Thorax longer ‘than first three dorsal abdominal segments. Femora 
in all three pairs of legs stouter than tibia, hairy, all tibie straight. 
Femora flavous toward base, tibize entirely fuscous. 
“Six abdominal dorsal segments visible, first and second dorsally with 
lateral patches of fine blue-gray pile; five and six with a median large ° 
patch, nearly covering the entire segment; all segments margined with 
black; first four segments brown above; all segments a lighter brown on 
the underside, covered with a sericeous pile. Connexivum strongly re- 
flexed in both sexes, more so in the female; spiracles visible at connexi- 
vum; male genital segment not very prominent. Genital color fuscous, 
strongly pilose. 
“Type, female taken at White Plains, Westchester county, N. Y., June 
30, 1912; paratypes, four specimens same place, same date, two West- 
field, N. J., September 3, 1904. 
“Long., 2.8 mm.; lat., 1.1 mm. at widest part. 
“Only the wingless form is known. It was taken in numbers in a 
spring in a marshy woodland, where it clings to the long mosses growing 
into the water or walks about leisurely a short distance from the rocky 
side of the basin. The blue-gray patches of pubescence on the dorsum 
are distinguishing characteristics. The characters given distinguish it 
from M. americana, for small specimens of which it might be mistaken. 
In antennal structure it is near M. albonotata.” 
Localities: New York, New Jersey and Massachusetts. 
Microvelia americana Uhler. 
Uhler-Hemiptera of Colorado, Agri. Exp. Sta. Bull., 31, p. 61 (tech. ser.). 
. “Dark brown, velvety above, more or less powdered with plumbeous, 
body a little tapering behind the curved base of sides. Head short, tri- 
angular before the eyes, margined with silvery, prostrate pubescence 
from behind the eyes and along their inner border forward to the cheeks; 
the throat testaceous; middle line of head obsoletely callous-carinate; 
rostrum testaceous, piceous at base and tip, reaching to the posterior 
line of the anterior coxe; antenne slender, obscure testaceous, darker 
on the tip of the first and second joints, the second joint shortest, the 
third and fourth much more slender, the fourth a little longer than the 
third. Pronotum triangular both before and behind the humeral angles, 
the anterior division very slightly sinuated on the sides, feebly notched 
at the end of the scutellum behind the anterior lobe; collum distinct, 
with an orange band on the middle; the surface rugulose and punctate 
behind this; the lateral and posterior margin orange, the tip a little 
rounded; the humeral angles moderately subacute, with the edge a little 
callous. Pleural pieces bordered with rufo-testaceous; the coxe, trochant- 
ers border of sternum, and legs yellowish-testaceous, with the femora, 
tibiz and tarsi dusky or piceous above. Scutellum fuscous, almost com- 
pletely concealed beneath the projecting pronotum. Hemelytra pale 
smoke-brown, narrower than the abdomen, with the veins darker, and a 
short streak at base of corium pale yellowish. Tergum rufous along the 
middle, blackish exterior to this; the connexivum both above and below, 
orange interrupted with black. The underside dull black with a tinge of 
plumbeous, a little sericeous, the posterior segments rufous on the middle, 
and the genital segment yellow. 
