32 



INSECTS OF SAMOA. 



7,ixJ924, thirty-tlu'ee specimens of both sexes having been collected by him on 

 foliage of Eugenia malaccensis, the common food plant of this species. 



Text-fig. 3. — Megatrioza swezeyi 

 Crawf., sp. n. Elytron. 



6. Megatrioza swezeyi sp. n. (Text-fig. 3.) 



Kather similar to M. vitiensis (Kirkaldy) in general aspect, but differing 

 somewhat in shape and venation of forewings and in the size of hindwings. 

 The forewings are narrower and more acutely pointed at apex, as compared 



with M. vitiensis, with the venation as indicated 



in the accompanying illustration. A striking 

 characteristic of this species is the extreme 

 reduction of the hindwings, to tiny stubs barely 

 visible at the base of the front wings. 



The body is about 2 mm. long, while the 

 front wings are 5 to 6 mm. long, and more than three times as long as broad. 

 The vertex and thoracic dorsum are sparsely pubescent, brown to dark brown 

 in colour, without the dorsal stripes and markings characteristic of M. vitiensis. 

 The genal cones are small, very short, usually yellowish or whitish in colour. 

 The hind tibiae have only a very small spur at base. The genital appendages 

 are similar to M. vitiensis, indicating a close relationship between the species. 



Apia, Upolu, one female, 15.ix.l923 ; Tutuila, one female (Swezey and 

 Wilder), Pago Pago, 30.ix.l923. A third specimen is before me, taken at 

 Lau, Fiji (Bryan). All these are in the Bishop Museum collection. 



7. Trioza samoansis u. (Text-fig. 4.) 



Length of body about 2 mm. ; length of forewing 2-8 to 3-3 nnn. General 

 colour light brown or reddish brown ; forewings smoky brown, with apical 



portion much darker. 



Head small, deflexed ; vertex pubescent, with 

 a foveal depression on each side of the median line ; 

 genal cones small, a little shorter than vertex, sub- 

 acute. Antennae very slender, nearly three times as 

 long as width of head. 

 Thorax arched, pubescent on dorsal surface ; pronotum short, much 

 depressed below vertex and mesonotum ; latter narrowly rounded in front. 

 Legs slender. F orewings with costa and veins setigerous. 



Text-fig. 4. — Trioza sauioan 

 sis Crawf., sp. n. Elytron. 



