340 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iio 



Acalypta barberi Drake 



Plates 11, 12 



Acalypta barberi Drake 1934, p. 196.— Hurd 1946, p. 463.— Drake and R.uhoff 



1959, p. 138. 

 Acalypta mera Drake 1941, p. 142. — Hurd 1946, p. 465. 



Brachypterous form.- — Ovate, obovate or elongate-ovate, brown- 

 ish to dark fuscous, often with a shght reddish tinge, body beneath 

 stramineous to dark fuscous, head often bhxck. Legs brownish, 

 femora usually darker. Antenna brownish with fourth segment 

 blackish. Length L90-2.24 mm., width 0.90-L20 mm. 



Head Avith a pair of porrect frontal spines; bucculae areolate, open 

 in front; antennal measurements: segment I, 0.15 mm.; II, 0.11 mm.; 

 Ill, 0.46 mm.; IV, 0.20 mm. Pronotum coarsely punctate, tri- 

 carinate, each carina composed of one row of moderately large areolae ; 

 lateral carinae slightly less raised than median carina, divergent pos- 

 teriorly; hood small, projected over base of vertex, obtusely rounded 

 at apex; paranotum wide, biseriate, or wider and triseriate in front, 

 anterolateral corner angulate. Hypocostal lamina uniseriate. Ely- 

 tron with divisions and areolae as shown in illustration. 



Macropterous form.- — ^Pronotum distinctly convex, coarsely 

 punctate, carinae slightly less elevated than in brachyptery; paranota 

 biseriate or wider with several interpolated areolae in front and 

 before apex. Elytra much longer than abdomen, sutural areas over- 

 lapping each other at rest; clavus distinct, concealed beneath tri- 

 angular process of pronotum in resting posture; discoidal area about 

 four-sevenths as long as elytron; costal area mostly uniseriate, often 

 with a few intercalated areolae at base and before apex. Length 

 2.16-2.44 mm., width (elytra) 1.12 mm. 



HoLOTYPE. — Brachypterous 9, Merrifield, New York, July 21, 

 1927, C. R. Crosby, U.S. National Museum. 



Distribution.- — United States: New York, Oregon. Canada: 

 British Columbia, New Brunswick. See map (pi. 2) for distribution 

 in western United States and Canada. Several thousand specimens 

 were collected by means of Berlese funnels in Oregon by the junior 

 author and associate. Mr. Joe Schuh also has taken many specimens 

 in Oregon. Feeds and breeds on mosses. Numerous adults and 

 nymphs were collected on hops at Coburg, Oreg., Aug. 26, 1935, 

 N. P. Larson. The hops were serving as temporary host plants after 

 the mosses had dried up. 



