LESTICOCAMPA LONGIPES 173 



vein slightly beyond anterior cross-vein; scales of veins narrowly elliptical, 

 brown, with a bronzy reflection, denser and broader on forks of second vein, 

 except at base. Halteres black. 



Legs long, slender, black with violet and blue reflection, the scales somewhat 

 roughened, the femora with a yellowish- white reflection beneath ; spines on hind 

 tibiae large ; hind tarsi with dense outstanding scales on apex of first and on the 

 second and third joints ; apical portion of hind tibiae ciliate, tarsals with the tip 

 of the third, all of the fourth and fifth joints white ; mid tarsi with apical half 

 of second and all of third and fourth joints white beneath, a brassy sheen above. 

 Claw formula, 0.0-0.0-0.0 ; one claw of the hind pair very slender. 



Length : Body about 6 mm. ; wing 5 mm. 



Male. AntennfB long and slender, with last two joints long, rugose, black, 

 with long pile; the other joints short, about five times as long as wide, with 

 slightly thickened rings at insertions of hair-whorls, brown, with pale rings 

 below the whorls; hairs long, sparsely plumose, and black, a small secondary 

 whorl at middle. Proboscis long and slender. Palpi about two-thirds as long 

 as proboscis, very slender, uniform, last two joints with a few short, coarse out- 

 standing setae. Coloration as in female. Wings hardly narrower than in the 

 female, the stems of the fork-cells longer, basal cross-vein within anterior one. 

 Abdomen expanded at tip, the last segment and genitalia entirely blue-black 

 scaled below ; separation of the colors on the sides less sharply angular than in 

 the female. Claw formula, 0.0-0.0-0.0. 



Length : Body about 5.5 mm. ; wing 4 mm. 



Genitalia (plate 7, fig. 46) : Side-pieces about three times as long as wide, 

 conically tapered at tip ; three long setae on the inner margin ; basal lobes large, 

 rounded, setose. Clasp-filament long and slender, with a terminal claw. Harpes 

 prominent, with thickened inner margin and curved spinose tip. Harpagones 

 and unci small, not prominent. Basal appendages slender, with long terminal 

 setae. 



Of the life history and habits Mr. Busck says : 



" The larva lives between the stalk and the leaf stalk of a juicy large-leaved, 

 dark-green plant, which reminds one of Monstera deliciosa. The space in these 

 leaf-corners is so limited and the amount of water they hold so small and so 

 slimy from the plant's juice that it would hardly be suspected to harbor mos- 

 quitoes ; and yet the plant probably has another Sabethid peculiar to it upon 

 which the present species preys." 



We have no information about the habits of the adult. 



Tropical South America to Nicaragua. 



Bluefields, JSTicaragua, adults captured (W. F. Thornton) ; Lion Hill, Canal 

 Zone, Panama, adults captured (A. Busck) ; Tabernilla, Canal Zone, Panama, 

 a pupa in leaf-sheaths of undetermined plant in bamboo woods, July 18, 1907 

 (A. Busck) ; Tabernilla, Canal Zone, Panama, larva in flower-cup of "wild 

 plantain," March 12, 1908 (A. H. Jennings). Also recorded from "South 

 America" (Fabricius), we suspect from the Northern portion, perhaps the 

 Gruianas. 



Lesticocampa longipes was apparently first misidentified by Macquart, who 

 thought it identical with a species of Sahethes. He assumed that Fabricius and 

 Wiedemann were in error in describing the hind legs as ciliate, instead of the 

 middle ones. He was followed in this by Arribalzaga, Theobald, Blanchard, and 

 other authors, the name longipes being now very generally applied to a species of 

 Sahethes. We find the present species to agree with Fabricius's description, sup- 

 plemented by that of Wiedemann, who had before him the type. They distinctly 

 state that all the tibiae are hardly ciliate, but the tarsi of the hind legs almost 

 shaggy. Our species also agrees in coloration, so that we feel as certain of the 



