404 PYRALIDINA [diasemia. 



7. DlASEMIA, Hb. 



Antennae |, ciliations fasciculated (H-2). Labial palpi por- 

 rected, second joint with dense projecting scales, terminal 

 exposed, pointed. Maxillary palpi with apex loosely scaled. 

 Tibial outer spurs |-|. 



A very small but quite cosmopolitan genus ; the species 

 range very widely, and must possess unusual powers of 

 adaptation. 



Wings strewn with whitish strigulae . 2. ramhurialis. 



,, not strewn with whitish strigulae . 1. litterata. 



1. D. litterata, Sc. 17-20 mm. Forewings brown, irregularly 

 mixed with black ; lines white, first obsolete towards costa, 

 second with triangular median projection nearly touching 

 tomus, its lower side nearly obsolete ; three white spots in 

 disc, first touching first line, second large, triangular, dark- 

 veined, resting on second line below middle, third preceding 

 second line above middle ; subterminal line very obscurely 

 whitish. Hindwings as forewings, but first and subterminal 

 lines and second white spot absent. 



SW. England to Hants and Pembroke, Suffolk, local ; C. and 

 S. Europe (very similar forms which range through Africa, 

 India, the Malayan region, N. Australia, and New Zealand are 

 probably identical) ; 7. 



2. D. ramburialis, i)wp. 15-18 mm. Forewings dark fuscous, 

 blackish- mixed, strewn with ochreous-whitish strigulae; lines 

 white, first ill-defined, obsolete towards costa, second forming a 

 quadrate projection below middle, its sides nearly obsolete ; a 

 white spot in middle of disc ; white marks preceding second 

 line above and below middle. Hindwings as forewings, but 

 first line and central spot confluent to form a straight fascia, 

 lower part of second line and preceding marks confluent to 

 form another. 



Kent to Cornwall, very local, perhaps not resident ; S. 

 Europe, S. Asia, Africa, Australia, N. America ; 7, 8. 



8. Stbnia, Gn. 



Antennae almost 1. Labial palpi porrected, second joint 

 with dense projecting scales attenuated to a point forwards, 

 terminal concealed. Maxillary palpi with apex loosely scaled. 

 Abdomen in $ very long. Tibial outer spurs J-. Forewings ; 

 10 out of 9. 



A small genus, attached to S. Eui'ope and C. Asia. 



1 



