SEEPHOID AND CHALCIDOID PARASITES OF THE HESSIAN ELY 91 



Bachmetjev, Ztsclir. Wiss. Insektenbiol. 4 : 350, Kurdjumov, Messager Ent. 

 [Kiev] 2: 2, 1913; Headlee and Parker, Kans. Agr. Expt. Sta. Bui. 188: 109, 

 1913; Felt, N.Y. State Ent. Rpt. 28 (Mus. Bui. 165) : 39, 1913; Webster, U.S. 

 Dept.Agr. Farmers' Bui. 640 : 16, 18, 1915 ; Viereck, Conn. State Geol. and Nat. 

 Hist. Survey Bui. 22 : 479, 1916 ; Spassky, Ann. Don Polyt. Inst. Novotcherkassk 

 5, no. 1, pt. 2, 1916 (abstract in Rev. Appl. Ent. (A) 5: 29, 1917) ; Packard, 

 Jour. Agr. Research 6: 367, 373-377, 1916; Fyles, Ontario Ent. Soc. Rpt. 46: 

 56, 1916; Collin, Ann. Appl. Biol. 5: 81-86, 1918 (abstract in Rev. Appl. Ent. 

 (A) 7: 70, 1919) ; McCollocb, Kans. Agr. Expt. Sta. Tech. Bui. 11: 63, 66, 67, 

 1923; Znamenski, Poltava Agr. Expt. Sta., Ent. Dept. Bui. 2, 1923 (abstract in 

 Rev. Appl. Ent. (A) 12: 291, 1924) ; Hill and Smith, Jour. Agr. Research 36: 

 153, 1928 ; Packard, U.S. Dept. Agr. Tech. Bui. 81 : 14, 1928 ; Meyer, Rpt. Appl. 

 Ent. Leningrad 4 : 241, 1929. 



Merisus intermedins Lindeman, Bui. Soc. Imp. Nat. Moscou (2) 1: 179-183, 

 192, 1887; Riley, U.S.Dept.Agr., Div. Ent., Insect Life 1: 132, 1888; Marchal, 

 Ann. Soc. Ent. France 66: 81-82, 1897; Osborn, U.S.Dept.Agr., Div. Ent. Bui. 

 (n.s.) 16: 28, 29, 1898; Dalla Torre, Catalogus hymenopterorum . . . , v. 5, p. 90, 

 1898 ; Pospjelov, Illus. Ztschr. Ent. 5 : 26, 1900 ; Meyer, Ztschr. Angew. Ent. 9 : 

 113, 118, 1923; Rpt. Appl. Ent. Leningrad 4: 236, 242, 1929; Vojnovskaja- 

 Krieger, Rpt. Appl. Ent. Leningrad 4: 187, 1929; Imrns, Parasitology 22: 

 33, 1930. 



Baeotomus destructor Fletcher, Canada Dept. Agr., Rpt. Ent. and Bot. 

 (1899), p. 169, 1900. 



Micromelus destructor Ashmead, in Smith, Insects of New Jersey . . ., p. 558, 

 1900. 



Merisus species Washburn, Minn. State Ent. Rpt. 8 (Bui. 84) : 10, fig. 7, 1903. 



DESCRIPTION 



Merisus destructor may be distinguished from most of the other 

 parasites of the fly by the antennal club, which in the female is 

 solid and tapered to a sharp point and in the male is indistinctly 

 3-jointed. It differs from M. febrieulosus and M- mordeJlistenae in 

 the more robust form of the thorax and in the darker abdomen. It 

 may be distinguished from Eupteromalus fulvipes by the immar- 

 gined occiput and darker colored legs, from Merisoporus chaleidi- 

 phagus by the entirely hyaline wings, and from CalUtula bicolor by 

 the 6-jointed funicle and the lack of a neck on the propodeum. 



Female. — Length 1.9 to 2.8 mm. Head transverse, a little broader than 

 thorax, three or more times as broad as thick antero-posteriorly at the mid- 

 dle, slightly concave behind, the occiput immargined ; temples not more than 

 one third as wide as the eyes, receding from the eye margin ; ocelli in an 

 obtuse triangle, the lateral ocelli fully three times their own diameter from 

 the eye margins ; postocellar line a little longer than the ocellocular ; head, 

 viewed from in front, a little broader than high, subelliptical ; malar space equal 

 to less than half the eye height ; eyes bare ; mandibles each with four teeth ; 

 labial palpi 3-jointed ; maxillary palpi 4-jointed, the apical joint about as long 

 as the second and third joints combined ; whole head strongly reticulate- 

 punctate, the punctures below the antennae somewhat finer than those on 

 the frons, the clypeal area convergently striated. Antennae inserted a little 

 below middle of head, but distinctly above lower margin of eyes, 11-jointed, 

 consisting of a cylindrical scape which reaches to the anterior ocellus, a pedi- 

 cel about twice as long as broad, two transverse but distinct ring joints, six 

 funicle joints of which the first is usually nearly twice as long as broad, the 

 sixth not longer than broad, and a solid club which tapers from its base to a 

 sharp and slightly curved point at apex and which is distinctly longer than 

 the two preceding funicle joints ; all funicle joints sparsely clothed with 

 hairs. Thorax as broad posteriorly as anteriorly, and a little less than one 

 and one half times as long as broad ; pronotum strongly transverse, nearly 

 as broad as the mesonotum, sculptured like the occiput ; mesoscutum moderately 

 convex, not quite twice as broad as long, sculptured like the head; the 

 parapsidal grooves weakly impressed anteriorly, entirely effaced behind the 

 middle ; scutellum subconvex, not quite so long as mesoscutum, sculptured 

 like mesoscutum; axillae broadly separated by base of scutellum, sculptured 



