Vol. XXV, pp. 111-114 June 29, 1912 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



NEW SPECIES OF ANISOPIi^E (RHYPHIP.E) FROM 



TROPICAL AMERICA. 



[DIPTERA; NEMOCERA.] 



BY FREDERICK KNAB. 



While the Anisopidae arc a very widely distributed group, 

 but few species are known and very little is known of their life- 

 histories. One of the species herein described (Anisopus pic- 

 tuf(ifiis) is of special interest as having been bred from epiphytic 

 Bromeliacise, the larvae presumably inhabiting the water which 

 collects at the bases of the leaves. The second species is pecu- 

 liar in its unusually robust make-up and in the general dark 

 coloration. 



I am unable to follow Coquillett in adopting the name Sylvi- 

 colse Harris for the genus generally called Rhyph/us ; the name 

 hardly can be considered a generic one and does not appear 

 to have been so intended by its author. In case Harris' name 

 is used, it should be converted to the singular, Sylvicola. 

 Neither can I accept Phryne, published by Meigen in 1800 

 without includinga species. Therefore I adopt Anisopus Meigen 

 (1803), which has priority over Rhyphus Latreille (1805). 



Anisopus picturatus sp. nov. 



Mule. —Mouth-parts and palpi yellow. Antenna' with the scape yel- 

 lowish brown, the flagellum black. Mesonoturn brownish black with 

 two indistinct longitudinal stripes on the dorsum and the lateral margins 

 yellowish brown. Scutellum yellowish brown, dark at base. Postnotum 

 dull brownish yellow. Pleurseand cox?e-dull brownish Mack. Abdomen 

 brown, the first segment brownish yellow except at base, the others with 

 yellowish apical margin-. 



Wings subhyaline with a dull yellowish tinge and spotted with dull 

 brown. Auxiliary vein contiguous with the lirst, or nearly so, in nearly 



21— Pkoc. Biol. Soc. w.\sir.. Vol. XXV, 191J (111) 



