hungerford: aquatic hemiptera. 125 



Microvelia frontinalis Bueno. 



Bueno, Bui. Brookl. Ent. Soc, 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. 



"Antennae 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 tibiae, hairy, all tibiae straight. 

 Femora flavous toward base, tibiae 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 broA\Ti above; all segments a lighter brown on 

 the underside, covered with a sericeous pile. Connexi\'um 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; parat>T)es, four specimens same place, same date, two West- 

 field, N. J., September 3, 1904. 



"Long., 2.3 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 gro-ning 

 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 bro\STi, 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-carinat«; 

 rostrum testaceous, piceous at base and tip, reaching to the posterior 

 line of the anterior coxae; antennas 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 dixision very slightly sinuated on the sides, feebly notched 

 at the end of the scutellum behind the anterior lobe; colluni distinct, 

 \\ith 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, ^\'ith the edge a little 

 callous. Pleural pieces bordered with rufo-testaceous ; the cox», trochant- 

 ers border of sternum, and lees yellowish-testaceous, with the femora, 

 tibiae 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 connexi^nim both above and below, 

 orange interrupted with black. The u'^derside dull black with a tinge of 

 plumbeous, a little sericeous, the posterior segments rufous on the middle. 

 and the genital segment yellow. 



