ART. 13 AMEEICAN GENUS MICROPHTHALMA ALDRICH 



Coquillett included this species in distmcta. Mr. Curran has noti- 

 fied me of the synonomy of phyllopJtagae^ having seen the type of 

 michif/anensis after the publication of his species. It was this species 

 and not 7d(/ra which Davis mentioned (as pruinosa) as being wide- 

 spread in the eastern United States, reared from Pht/Uophaga anxia. 

 I am responsible for the misidentification. 



The species differs from distinct a, with which it is often confused, 

 by the characters of the key, and by hardly anything else. On the 

 poUinose pattern of the abdomen it can be separated quite readily, 

 as shown by the considerable series of both in the collection. 



The United States National Museum contains 18 specimens of 

 viichigm^ensis^ as follows: Six paratypes of phyUophagae^ all from 

 Hemmingford, Quebec (G. H. Hammond) ; 2 from Beverly, Massa- 

 chusetts (Riley collection) ; 2 from District of Columbia, bred from 

 larvae of Phyllophaga arcvAita (Pergande Nos. 2932 and 5163) ; one 

 Plummer Island, Maryland (D. H. demons) ; one Hagerstown, 

 Maryland (W. E. Pennington, bred from Phyllophaga) ; 3 Lafay- 

 ette, Indiana (Aldrich) ; 2 Brookings, South Dakota (Aldrich) ; one 

 Victoria, Texas (W. E. Hinds). The Quebec material was bred 

 from Phyllophaga anooia. 



Length, 9.5 to 13 mm. 



MICROPHTHALMA SHANNONI Townsend 



Eumicroplithalma nhannoni Townsend. lusecutor Inscitiae Alenstruus, vol. 3, 

 1915. p. 98. 



The single female type specimen from Eastern Branch, District 

 of Columbia, is the only one as yet known. The front is 0.41 of the 

 headwidth, as compared with 0.36 in the female of nigra, genotype 

 of Micro phthaJyna. The third antennal joint is red, but toward the 

 apex the edge is blackened. The palpi are relatively somewhat 

 smaller than in nigra., but not otherwise peculiar. The first posterior 

 cell is open, not closed as the description states. The abdomen is cov- 

 ered with thin pollen, through which the black ground color appears 

 in some lights to be subshining, with only a narrower deeper pollen 

 at the extreme base of the segment. The hind cross vein is a little 

 more erect than in nigra, but can be exactly matched in some speci- 

 mens of disjuncta; it shows indications of the sinuation which is 

 striking in some specimens of nigra. There are only two lateral 

 pairs of scutellar bristles, instead of three as in the other species. 

 The parafrontals, mesonotum. and scutellum are clothed with 

 brownish pollen. 



MICROPHTHALMA CUZCANA Townsend 



Perua cnzcana Townsend, Proc. U. S. Nat. Mus., vol. 43, 1912, p. .364. 



Described from a single female taken by Dr. C. H. T. Townsend 

 at Cuzco, Peru. The type is in the United States National Museum, 

 and no additional material has been seen. 



