2!)0 LYONETID.I^. 



Occurs in marshy places at the end of June and beginning of 

 July. Pisclier observed this species to fly only at dusk, hence 

 the name ; but later observations show that it also flies earlier in 

 the afternoon, especially if the weather be dull. 



Genus V. BUCCULATRIX. 9? . VU) • ' ^ 



_c 



EuccuLATRix, Zell. L. E. iii. 286 (1848). Tinea p., Haw. ElacJiista 

 p., Treit. ; Dup. L. F. xi. Argyromiges p., Step. Lyonetia p., 

 Zell. Isis, 1839; Dup. Cat. 



Capilli hirsuti, epistomio laevigato. Antennse breviusculse, concJiula 

 hasali parvula. Palpi nulli. Haustellura breve, nudum. Ala? an- 

 teriores caudulata3, posteriores lanceolatce ; anteriores : cellula dis- 

 coidalis acuta, potsice venas sex emittit, vena subcostalis lougissime 

 obsoletn, subdorsalis simplex ; posteriores ; vena raediaua in tres 

 ramos divisa, subdorsalis simplex. 



Head rough, tufted; the face smooth. AntenncG rather short, with 

 a ratlwr small eye-cap to the basal joint. Palpi none. Tongue short 

 and naked. Anterior wings caudulate, the posterior lauceolate. In 

 the anterior wiugs the acute discoidal cell posteriorly emits six veins ; 

 the subcostal vein is obsolete for a considerable distance; the subdorsal 

 vein is simple ; in the posterior wings the median vein divides into 

 three branches ; the subdorsal vein is simple. 



This genus oilers several points of resemblance with the next 

 family, but the larvae have six well-developed true legs. The per- 

 fect insects are rather active, and frequently fly in little swarms 

 rcnmd the plants on which the larv;Tc feed. The larvae have a very 

 singular habit, at least it has been observed in Cratccgl and Fran- 

 galella, and probably it prevails throughout the genus : these 

 larva) when very young are true miners, that of CraUegi forms 

 a short tortuous mine ; that of FrangnteUa a spiral one, forniing 

 brownish-purple blotches on the leaf; at a certain age the larva 

 cpiits the mine, and on the underside of the leaf spins a delicate 

 whitish web or cocoon, within which tiic larva remains quite 

 motionless and in a horse- shoe shape for a considerable time; it 

 then emerges from this cocoon totally diflerent in appearance to 

 what it was as a leaf-miner, and proceeds to eat the epidermis of 

 the leaf, which formerly it mined. The deserted cocoon will be 

 found to contain the previous skin of the larva. The external- 

 feeding larva has a singular shagreen appearance ; when full-fed 

 it descends to the groniul, or some convenient corner, and spins 

 an elongate ribbed cocoon, within which it remains unchanged 

 for a considerable time. 



