10 MISC: PUBLICATION 241, U. S. DEPT. OF AGRICULTURE 
separated; recurrent vein absent; posterior wing not acute at apex, the venation 
very faint. 
Abdomen strongly petiolate, much narrower than thorax; first segment very 
slender, nearly parallel-sided, broadening very slightly at apex, longitudinally 
rugulose aciculate from base to apex, the spiracles at about the middle; ventral 
margins of first tergite only slightly separated at middle; following tergites pol- 
ished; fused second and third taking in most of abdomen beyond first tergite, not 
carinate laterally, the ventral margins overlapping; ovipositor sheaths very 
slender, as long as first abdominal segment. 
Brownish black; face and mouth area brownish yellow; scape, pedicel, and 
basal two flagellar segments yellowish; anterior legs brownish yellow; middle and 
posterior legs dark brown, their tibiae and tarsi somewhat paler; wings hyaline; 
stigma brown; the veins paler. 
Male.—Differs from the female as follows: Head more transverse; eyes small, 
nearly round, not noticeably convergent and only weakly hairy; face broad, much 
broader than long; first segments of antennal flagellum not distinctly thicker than 
second; propodeum completely rugulose. Antennae a little paler than in female, 
only the apex dark. 
Type locality—Tryon, N. C. 
Type.—United States National Museum no. 49908. 
Host.—Phthorophloeus frontalis (Oliv.). 
Described from 8 females and 8 males reared in the Bureau of Ento- 
mology from adults of the above coleopterous host in mulberry and 
hackberry; the type under Hopk. U.S. no. 3635m, the allotype and 1 
male paratype under Hopk. U.S. no. 3635e, 6 femates and 4 mases 
under Hopk. U. S. no. 3680, all from the type locality; 1 female and 
1 male under Hopk. U.S. no. 2594e and 1 male under Hopk. U.S. no. 
8636, from Kanawha Station, W. Va. 
The Genus CENTISTINA Enderlein 
Centistina Enderlein, Arch. Naturgesch. (Abt. A) 78 (2): 40, 1912. (Genotype, 
Centistina longicornis Enderlein.) 
This genus is known only from the single male specimen, from 
Madagascar, from which it was characterized by Enderlein. That 
author assigned the genus to the Leiophroninae, placing it near 
Centistes. It actuaily belongs in the EKuphorinae, however, and in 
this group appears to be most closely related to Perilitus. The follow- 
ing summary of characters is from the type of C. longicornis, which is 
in the Natural History Museum at Stettin, Germany: 
Head transverse; face broader than long, rugulose; mandibles fitting against 
clypeus; clypeus large; eyes elliptical; frons very short, the antennae being 
inserted very high, just below upper level of eyes; antennae 23-segmented; 
scape long and slender, at least as long as eyes, slightly curved; pedicel elongate; 
first flagellar segment long and slender, the following gradually shorter; notauli 
absent; propodeum strongly declivous behind, but not excavated, closely rugulose; 
mesopleurum without a furrow; prepectus margined; first abdominal segment 
petiolate, the tergite somewhat striate longitudinally, its lateral margins extend- 
ing upon the venter but not meeting; spiracles of first segment slightly behind 
middle; fused second and third tergites long; dorsum of abdomen beyond first 
tergite smooth: legs slender; inner calcarium of posterior tibia half as long as 
metatarsus; nervulus interstitial; medius straight, well developed; lower abscissa 
of basella about as long as nervellus and much less than half as long as mediella. 
The Genus EUSTALOCERUS Foerster 
Ropalophorus Westwood, An Introduction to the Modern Classification of 
Insects, v. 2, Gen. Syn., p. 61, 1840. (Genotype, Microctonus clavicornis 
Wesmael.) 
Rhopalophorus Blanchard, Histoire Naturelle des Insectes . . ., v. 3, p. 331, 1840. 
Eustalocerus Foerster, Verhandl. Naturh. Ver. Preuss. Rheinlande 19 (a P, 9): 
251, 1862. 
