DURHAM DIPTERA. 335 



XLII. 563. 



25 (24). The greater part of 0.5 2 filled by the dark band 



which crosses it. (2450. T. formosa, Lw.) 



26 (21). Tip brown or blackish; if clear, then the dark mark 



at the ends of V.3. and V.4. united to the rest of 

 the dark part. 



27 (28). Small species, 1-^-2 mm. (2454. T. dioscurea, Lw.) 



28 (27). Larger species, 3 mm. 



29 (32). 0.5 2 clear at its base, the clear spots comparatively 



few, but large and distinct. 

 30(31). No clear spot on X.5 2 ; a clear semicircular spot 

 between the ends of V.3. and V.4., as if half 

 pushed off the wing by the dark part. 

 2453. Tephritis vespertina, Lw. 

 Harperley, 2 $, April ; Shull, 1 $, September, 1900. 



31 (30). A clear spot on X.5 2 ; the tip spot round. 



(2455. T. leontodontis, Deg.) 



32 (29). 0.5 2 spotted to its base, the clear spots generally 



very numerous but small. 



33 (84). Wings yellow at the base. (2451. T. conura, Lw.) 



34 (33). Wings not yellow at the base. (2452. T. rttralis, Lw.) 



35 (6). Wings with the clear spots arranged round the wing 



margin, so as to cause the dark parts along the 

 margin to assume the form of rays, or, the lattice 

 work only present on the fore half of the wing. 



36 (37). Lattice work extending nearly to the base of the 



wing. ( 2 458. E. guttata, Fin.) 



87 (36). Base of the wing clear, usually as far as X.4., some- 

 times nearly to the wing tip. 



38 (39). Stigma brown without any clear spot ; lattice work 



beginning a good way before X.4. 



(2457. E. conjuncta, Lw.) 



39 (38). Stigma all clear, or orange or brown with clear spots ; 



the lattice work beginning close before or after X.4. 



40 (43). Scutellum with two bristles. 



41 (42). Stigma clear or orange, and never connected with 



X.4. by a brown shadow. 



(2462. U. stellata, Fuessl.) 



