XXI. DESCRIPTIONS OF TWO NEW SPECIES 



OF DIPTERA FROM SEISTAN, 



EASTERN PERSIA. 



By E. Brunetti. 



In a small collection of DIptera made in Seistan by Dr. N. 

 Annandale andMr.S. W. Kemp in November and December, 1918, 

 there are two undescribed species of which the material justifies 

 the publication of diagnoses. These two species are here described 

 at the request of Dr. Annandale, in order that he may refer to 

 them in a forthcoming report on the aquatic fauna of Seistan. 



Family SYRPHIDAE. 

 (?) Didea annandalei, sp. nov. 



Seistan, E. Persia. Long. 8 mm. 



Almost intermediate between Didea and Syrphus. 



Head. Frons and face bright chrome yellow ; former with short 

 stiff black pubescence, latter with softer pale yellow hairs ; antennae 

 orange, upper side brownish ; arista orange ; mouth border brown- 

 ish. Eyes quite bare ; occiput black, entire margin with fringe 

 of whitish hairs ; vertex with stiff black hairs ; ocelli ruby red. 



Thorax shining black ; dorsum without trace of median ere}' 

 stripes on anterior margin, wholly with quite whitish pubescence ; 

 side margins distinctly yellowish ; pleurae mainly shining black, 

 with whitish pubescence : mesopleura aeneous with yellowish 

 pubescence. Scutellum wholly rather dull yellow with all yellow- 

 ish pubescence. 



Abdomen with yellow spots as in D. fasciata, Macq., except 

 that the fifth segment is wholly orange yellow except at middle of 

 base. Belly yellowish ; an indistinct black mark about middle of 

 each segment. 



Legs, except the black coxae, wholly yellow. 



Wings with 3rd longitudinal vein barel}' dipped. 



Described from a single cf from Nasratabad, Consulate Gar- 

 den, Seistan. The specimen is in the collection of the Indian 

 Museum. 



The present specimen possesses two out of the three charac- 

 ters which may be regarded as typical of Didea, namely the 

 general fades due to the shape and size of the abdominal spots, 

 and the ridged edge to the abdomen, but it lacks the third and 

 equalh' important character of the considerably dipped third vein 



