1911] Alexander — Synonymical and Other Notes on the Tipulidae (Diptera) 195 



but it would be desirable could we have a common terminology 

 for all of the Dipterous families, if not for all the orders of insects. 

 I wish to thank Dr. A. D. MacGillivary, of Illinois, for advise 

 on certain points; Dr. J. C. Bradley, for the Georgia material 

 herein included, and, especially. Dr. J. G. Needham for kind 

 advice and assistance upon many points. 



Limnophila similis sp. nov. 



Male. Dark brownish-black; L. 7.5 mm.; wing, 9 mm. Rostrum brownish-yel- 

 low, darker at the tip; palpi dark brownish-black; front, vertex and gense, light 

 gray. Antennae: first segment elongated, cylindrical, as long as segments two, 

 three and four combined, brown; second segment, globular, reddish-brown; remain- 

 ing segments generally similar to one another in shape, cylindrical, armed with 

 long black verticils and clothed with a fine yellow pubescence. 



Thorax: Pronotum, dark brown with a fine pubescence; mesonotum: anterior 

 portion of the prsescutum, glabrous, shining black; remainder with a yellowish- 

 brown bloom; a regular V-shaped row of yellowish-brown hairs, extending from the 

 caudal end of the naked patch described above, posteriorly to near the transverse 

 suture; scutum, scutellum and postnotum with a gray bloom, the scutum with 

 scattered hairs; scutellum with a transverse row of yellowish-hairs along 

 the caudal margin. Metanotum gray. The pleurae dull yellowish-brown; venter, 

 pale yellow, its sides with a gray bloom. Halteres, pale yellow, the knobs darker, 

 brown. Legs: coxae, bright yellow; femora, yellow, tipped with brown; tibiae, 

 brownish-yellow, extreme tip darker; metatarsus yellowish-brown, the remainder 

 of the tarsi, dark brown. 



Abdomen, dark brown, densely covered with long, pale brown hairs, the genital 

 segment brighter brown. Genitalia: the pleura is moderately long, thickly armed 

 with very long dark brown hairs; these hairs as long as the apical appendages. 

 The dorsal apical appendage, pointing meso-caudad, chitinized at the tip, toothed; 

 the ventral appendage thickened at the base, the slender apical portion short, di- 

 rected caudad. (See fig. 8.) 



Wings of a whitish color; cells C and Sc tinged with yellow; stigma, brown; 

 basal deflection of R4 + 6, base of Rg and the deflection of Cui with brown clouds; 

 distal portion of cells 2d Ri, R2, R3 and R5, tinged with darker. Venation: al- 

 most exactly as in L. adusta, O.S., both agreeing in the following essentials: Rs 

 very short, arcuated at its origin; R3 rather short, oblique, with the radial cross- 

 vein near its middle and at the tip of Rr, 2d Anal similar in the two species. (See 

 fig. 4.) 



Female. Similar to the male; L. 8-9 mm.; w. 10-10.5 mm. Generally similar 

 to the male, but the mesothoracic scutum and scutellum are covered with a yel- 

 lowish-brown bloom; postnotum with a gray bloom; abdomen pale yellow with 

 light brown apical rings on the segments; abdomen beneath, light yellow with 

 brown caudal margins to the segments. 



