NO. 3533 CHALCID WASPS OF GENUS EURYTOMA — BUGBEE 505 



than a vertical plane; whole structure averages 1.5 mm. (1.4-1.9) in 

 length and .98 mm. (.87-1.2) in height ; thus the height averages about 

 65% of the length. Thorax black or with a deep reddish-brown 

 tinge. Tegula brown to black. May be a few weak striae on lower 

 part of face. Propodeum shallowly concave with a wide median fur- 

 row that may be complete to base; furrow may narrow toward base; 

 central carina divides f m-row into squares with largest at top ; carina 

 may be complete to base or fade out about halfway down; surface of 

 squares shiny and smooth; large carinated pits dorsolateral to furrow; 

 lateral areas with rough-pitted and ridged surfaces. Scape of antenna 

 yellowish brown to black; flagellum distinctly 6-jointed; joints longer 

 than wide but they become progressively shorter distally so fourth and 

 fifth may be almost square. Legs with black or deep reddish-brown 

 infuscation on all femora and mid- and hindtibiae or fore- and mid- 

 legs yellow and hindlegs with infuscation only; coxae black or deep 

 reddish brown. Wing veins yellow, linear; marginal always longer 

 than postmarginal; averaging .29 mm. (.25-.37) in length and post- 

 marginal averages .21 mm. (.17-.27); thus postmarginal is equal to 

 about 72% of length of marginal. 



Male : Black. Averages 2.2 mm. (1 .8-2.6) in length. Tegula black 

 or deep brown. Scape black or base may be yellow. Antenna with 

 the flagellum seven segmented; first five segments truncate and pedi- 

 cellate on distal ends and all about equal in length; six and seven 

 closely applied together but separated by a shallow annulation. Legs 

 with black infuscation on all femora and tibiae except forelegs in a 

 few; coxae black. Petiole sUghtly longer than hindcoxa which aver- 

 ages about 85 to 90% length of petiole. 



Neotype: Female, Bloomfield, Ind. Collected Oct. 18, 1936, 

 by A. C. Kinsey; emerged May 5, 1937. In U.S. National Museum. 

 In addition there are 18 female and 15 male specimens in the U.S. 

 National Museum and in the Bugbee collection, Allegheny College, 

 Meadville, Pa. 



Host: Neotypes from Acmspis pezomachoides (Osten Sacken) on 

 Quercus alba, Kinsey determined. 



Range: The United States wherever oak occurs. 



Additional host records from specimens in the study collections 

 include: Acraspis hirta, A. erinacei, A. macrocarpae, A. villosa, A. 

 derivatus, A. ozark, A. gemmula, Andricus ignotus, A. cicatricula, 

 A. jlocci, Callirhytis elongata, C. clamla, C. seminator, Disholcaspis 

 spongiosa, D. washingtonensis, D. quercus-glohulus, D. succinipes. 



Remarks: The additional hosts indicated below were taken from 

 the Ust compiled by Peck (1951, in Muesebeck et al., Monogi\, no. 2, 

 U.S. Dept. Agiic): 



219-931—67 6 



