564 U. S. NATIONAL MUSEUM BULLETIN 216 



Collection dates are mostly from May 30 to the end of July, more 

 in June than in July. Dates of capture outside of this range are: 

 May 13 in Dane Co., Wis.; May 20 in the Black Mts., N. C; May 28 

 in Macomb Co., Mich.; May 29 at Ann Arbor, Mich.; August 4 at 

 Ramsey, N. J.; August 5 in Sawyer Co., Wis.; August 17 at East 

 Lansing, Mich.; August 19 at Lewisburg, W. Va. ; and September 6 

 at Bar Harbor, Maine. We have found the species mostly in rich 

 deciduous woods. 



Hearings are as follows: cf, 9, from Melandrya striata in Betula 

 lenta, May 25 and June 1, 1918, W. S. Fisher. 9, from Melandrya 

 striata in Liriodendron, Falls Church, Va., T. E. Snyder. 2d\ from 

 Melandrya striata, Delaware Co., Ohio, D. J. and J. N. Knull. d 1 , 

 from either "Leptura" or Melandrya striata in Fraxinus, Sycamore 

 Island, Md., May 20, 1917, F. C. Craighead. 



This species is in the Alleghanian and Carolinian faunas. It 

 parasitizes Melandrya striata in decaying hardwood logs. Adults 

 occur mostly in June and July. 



2. Arotes maurus Rohwer 



Arotes maurus Rowher, 1920, Proc. U. S. Nat. Mus., vol. 57, p. 517; ? . Type: 9 , 

 Mission, B. C. (Washington). 



Front wing of male 11.5 to 13 mm. long, of female 12 to 15 mm. 

 long; female nagellum about 0.93 as long as front wing; upper hind 

 third of pronotum with fine punctures separated by about 3.0 their 

 diameter; lower half of mesopleurum with rather coarse punctures 

 that are subadjacent or separated by as much as their diameter; meta- 

 pleurum with rather coarse subadjacent or crowded punctures; second 

 segment of hind tarsus about 4.0 as long as deep in male, about 3.1 as 

 long as deep in female; ovipositor sheath about 1.25 as long as front 

 wing. 



Male: Black. Face, frontal orbit, cheek, large vertical stripe on 

 temple, clypeus, labrum, basal half of mandible, palpi, lower half of 

 antenna, apical 0.35 of nagellum except extreme tip, sometimes spot 

 on anteroventral edge of pronotum, sometimes hind corner of pro- 

 notum, sometimes stripe in lower part of mesopleurum, sometimes 

 spot at upper end of prepectal carina, tegula, spot on subtegular 

 ridge, sometimes dash on median lobe of mesoscutum next to notaulus, 

 spot on mesoscutum next to tegula, scutellum, postscutellum, some- 

 times spot on upper part of metapleurum, some or all of hind part 

 of propodeum, front and middle legs except base of their coxae and 

 sometimes front femur behind, extreme apex of hind coxa, hind tro- 

 chanters except for spot at base above on the first trochanter, some- 

 times exterobasal spot on hind femur, apex of hind tibia, basal 0.3 ± 

 of hind tibia, hind tarsus, and apical bands on at least the first four 



