86 



The South Sea Guava Fly. 

 (PI. VII, figs, la, 2a, 3a) 



Dacus psidii, Froggatt. 



, N.S.W., 1899, p. 1 



W., 



(TepJiritis psidii, Froggatt, Agricultural Gazette, N.S.W., 1899, p. 501, 

 PL ii, figs, la, '2a, 3a. Miscellaneous Publications, Dep. Agr. N.S. 



No. 303.) 



In the original description the numbers of the plate are transposed, but 

 on reference to the letterpress the mistake will be noticed. The larvae were 

 obtained from infested guavas condemned in a shipment of fruit from Noumea, 

 New Caledonia. Specimens were afterwards obtained from granadillas that 

 came in a similar condition from Fiji. 



In general appearance, the maggots which were kept under observation 

 did not differ from those of D. tryoni, and they pupated in the soil in the 

 breeding-jars just beneath the surface. This is a medium-sized species, 

 measuring three lines in length and about five across the expanded wings. 

 The head light brown, with rich metallic purple eyes ; antennae brownish- 

 yellow, the last joint black, long and cylindrical, finely pubescent, the bristle 

 stout and long, with scattered bristles on the face and hind margin of the 

 head ; thorax black, with a few fine bristles near the base of the wings, a broad 

 parallel white stripe down the centre, with a pale yellow stripe down either 

 side, the humeri a stripe on the sides marked with creamy white ; the 

 scutellum large, angular, broadest in front, so broadly margined with creamy 

 white that the centre forms a black triangle, a pair of black bristles orna- 

 menting the hind margin ; legs brownish-yellow, clothed with fine hairs, 

 tarsal spines and claws black ; the wings hyaline, very slightly clouded at 

 the tips ; nervures blackish ; the transverse cubital nervure clouded on either 

 side with black, giving it a thickened appearance ; the apical portion of the 

 second costal, the base of the third costal, and the third basal cell clouded 

 with brown ; the abdomen black, elongate, narrow at base, pointed to 

 extremity ; the geriitalia ochreous ; ovipositor consisting of a stout horny 

 pointed process, enclosed in a pale yellow sheath of a granulated structure. 



Habitat, New Caledonia and Fiji. 



Dacus lonyicornis, Wiedemann. 



(Aussereuropaische Zweiflugelige Insecten, vol. II, p. 524, 16.) 



This species was described from Java, but I have a specimen obtained in 

 India, so that it probably has a wide range. There is a specimen in VerralFs 

 Collection under this name that was probably identified by Bigot. 



This is one of the large typical forms of the species, with very long antennae, 

 a, rather stalked pyriform abdomen, broadly rounded at the extremity. 

 It is of a uniform ferruginous tint, with the dorsal surface and sides of the 

 apical half of the abdomen clothed with fine golden pubescence. The wings 

 are hyaline, with a broad well-defined stripe along the costal nervure. 



Wiedemann says : " Reddish, constricted at the base of abdomen, costal 

 edge of wings brown. Length, 4 lines." Java. 



