^ - / ^ ;2 6' 

 57. 



LEPTOCERUS OCHRACEUS. 



Order Trichoptera. Tam. Leptoceridse Leach, Pliryga- 



nites Lat. 



Type of the Genus *Phryganea iuterrupta lab. 



Leptocebus Leach. Phryganea Litin., Fab., Lat. 



Antennce inserted between the eyes, setaceous, very long, espe- 

 cially in the males, porrected, composed of numerous simple joints, 

 1st and 2nd joints thick, hairy, forming together an obovate club, 

 3rd joint long, 4th and following shorter, nearly of equal length 



(fig- 1.) . 



Labruin inflected, broad and coriaceous at the base, narrowed 

 towards the apex, which is membranaceous quadrate, and hollow 

 beneath (2.) 

 Mandibles very minute. 



Maxillce membranaceous, small, somewhat trigonate, lying parallel 

 to the sides of the lip : Palpi very long and hairy, coriaceous at 

 the base, membranaceous towards the apex, 6-jointed, 1st and 2nd 

 joints long, robust, 3rd long, slender, bent at its base, 3 following 

 shorter of nearly equal length (4.) 



Menttmt bilobed (5. b.) : Paljn hairy, 3-jointed, articulations of 

 nearly equal length, terminal joint compressed, flexible (c.) 

 Lip short, moveable, pubescent, received between the labrum and 

 mentum (5. a.) 

 Eyes prominent. Ocelli 2, distant. Abdomen somewhat compressed, 

 composed of 9 joints, in the male, with a cotisiderable space down 

 each side covered only with a thin membrane. Superior wings very 

 much deflexed, ciliated, covered with hairs, having many hairy nerves, 

 of which the costal and the next to it are the strongest (9.). In- 

 ferior wings not very large, plicate. Legs elongated. Tibiae opined. 

 Tarsi h-jointed, 1st joint very long. Claws 2. Pidvilli small (8 a 

 fore leg.) 

 Larva inhabiting the water and residing in tubes ^ covered externally with 



sand, pebbles, shells, small pieces of grass, ^c. 

 Pupa resembling the imago, inclosed in the case in which it lived in the 

 larva state. 



OcHKACEUS nob. 



Pale and dull ochre colour. Eyes black. Antennae towards their 

 apex and annulations fuscous. Head and thorax fen-uginous, 

 the latter with 3 longitudinal fuscous obscure stripes Abdomen 

 cinereous. Superior wings long, lanceolate, rounded. Cilia 

 fuscous. Inferior wings semi-transparent. Legs pale. 



In the Author's Cabinet. 



* The dissections are made from Leptocerus ochraceus. 



