1920] Melander: Nearctic Tetanoceridce 325 



Limnia louisianae iiew species. 



Male — Length, (> mm. Head fulvous, cheeks and face sericeous 

 white, a square cervical and three round orbital spots black; fror^" 

 wider than long, middle stripe occupying nearly one-fourth of the 

 front, widest anteriorly; second joint of antennse oblong, with two 

 dorsal converging bristles, third joint triangular, shorter than the 

 second, reddish at base and distally brownish, arista as long as the 

 antennas, loosely and long plumose. Notum ferruginous, bivittate with 

 gray, setulae close and evident, but lacking on the grayish lateral stripes; 

 upper pleuras fulvous, lower testaceous and pollinose, metapleural 

 callus brown, pleural setulse unusually strong, especially the vallar 

 pair. Abdomen grayish brown. Legs yellowish, apex of tibiae brownish, 

 tarsi distally dark, flexor seta of hind femora strong. Halteres tipped 

 with brown. Wings strongly infumated along costal portion so that 

 no hyaline areas touch the second vein, remainder of wing with numerous 

 quadrate hyaline areas which frequently coalesce, posterior crossvein 

 straight in front and sinuous behind; middle section of fourth vein 

 slightly longer than the others. 



Female — 7 mm. Front and its middle stripe slightly broader; apex 

 of front tibiae and all of front tarsi black, hind femora tipped with 

 brown. 



Opelousas, Louisiana,* March, 1897, received from Dr. 

 Hough, whose manuscript name has been retained. 



Var. septentrionalis, n. var. Feathering of arista shorter; interfrontal stripe 

 nearly parallel-sided; pleural setulae less pronounced; reticulation of wings more 

 definite and wider spread, the paler portions with yellowish tinge, a row of square 

 marks touching the second vein. 



Male and female, Washington, D. C.,* 17 August, 1913. 

 A male, Lafayette, Indiana,* 4 July, 1914, has narrow inter- 

 frontal stripe and lacks the black spot at the base of the posterior 

 fronto-orbital bristle. 



Limnia saratogensis Fitch. 



This species is widely distributed and is either variable or is a com- 

 posite of several forms. The coordinate European species L. unguicornis 

 Scopoli differs as set forth below: 



L. unguicornis: Elevated patches of black setute j^resent on fourth 

 and fifth sternites; paramera bluntly triangular with tumid apex; notal 

 setula; abundant, about four rows on middle vitta; reticulation of wings 

 usually evanescent behind fourth vein and weak along second vein; 

 cervical spot large and black. 



L. saratogensis Patches of setulae scarcely or not elevated on fourth 

 stemite and absent on fifth ; paramera inegulai ; notal setulae not 

 abundant, about two rows on middle vitta; wing-pattern more or less 

 developed in discal and third posterior cells, not weakening along second 

 vein; cervical spot less intense. 



