374 CONNECTICUT GEOL. AND NAT, HIST. SURVEY [Bull. 



Mesonotum dark brown, more or less pruinose, the median rejiion 

 of praescutum with a more or less distinct stripe of the ground-color ; 

 pleura pruinose. Wings (Fig. 43, G) with a very restricted darker 

 pattern, most evident as a cloud on the anterior cord : macrotrichia of 

 veins long and conspicuous: veins i?i+2. ^2 and ^2+3 all short and sub- 

 equal in length. Male hypopygium (Fig, 45, B). 5. L. 7-9 mm.; w. 

 7-9.5 mm. 9. L. 7.5-S mm.: w. 9-10 mm. 



(Late May-July; more rarely in Autumn) Que., N. B., Me., N. H., Mass., N. Y., 

 west, to Wise, southw. to D. C. (Hudsonian. Canadian). 



Pseudolimnophila Alexander 



1919. PHcvdolimnophila Alexander; Cornell Univ. Agr, Expt. Sta. 



Mem. 25 : 917. 



1920. PseudoUmnophUa Alexander: Ibid., Mem. 38:848-850. 



The chief points of distinction between Pseudolimnophila and 

 Limnophila have been indicated in the key to the genera of Hexa- 

 tomini. The immature stages of the two groups provide stronger and 

 more satisfactory characters for the separation of the subtribes. In 

 the following treatment. PseudoVimnophUa. toxoneura has been re- 

 moved from the present genus and placed in AustroliTnnophila . The 

 adult flies frequent a variety of ecological habitats that are indicated 

 under the various species. The early stages are spent in saturated 

 earth in the same general habitats frequented by the adult. Edw ards 

 (1938) has placed this group as a subgenus under Limnophila ]Mac- 

 quart. 



Key to Sf'ccics 



1. Cell Ml lacking (Fig. 43, I) noveboracensis 



Cell Ml present (Fig. 43, H) 2 



2. Thoracic pleura pale, striped longitudinally with dark brown, the longest 



stripe being the more dorsal one contempta 



Thoracic pleura uniform light to dark gray 3 



3. Wings yellowish, distinctly marked with pale brown at stigma and on the 



crossveins and deflections of longitudinal veins (Fig. 43, H) luteipennis 



Wings gray or yellowish gray, unmarked except for the stigmal area 4 



4. Size large (wing, S, over 7 mm.); mcsonotal praescutum with a median 



brown stripe, the lateral stripes not or scarcely indicated inornata 



Size small (wing, $, under 6 mm.) ; mesonotal praescutum gray, with four 

 narrow brown stripes, the lateral pair distinct australina 



Pseudolimnophila australina Alex. 



1927. Psendolininophila australina Alexander : Journ. X. Y. Ent. 

 Soc, 35 : 56-57. 



Size small (wing, 5, 4.5-5.5 mm.). Wings with /?2 + 3 + 4 long and 

 gently arcuated, from two to three times the length of the basal de- 

 flection of i?5. $. L. 4-4.5 mm.; w. 4.5-5.5 mm. ?. L. about 6 mm.; 

 w. 6-G.2 mm. 



(July) Md., westw. to s. Ind. and Tenn., southw. to S. C, Fla. and Ala. (Austral). 



