MICBODBOMTA. — PHYLLODROMIA. 367 



of 5tli longitudiual Aein absent or abortive ; anal vein generally 

 absent ; no stigma. 



Mange. Europe, Siberia, India, Java, jN'orth America, Cliile. 



Life-liistorij. The metamorphoses are known of j))YPC'<tor;"rt, 

 Fin,, a European species of Hemerodfomia, of which Microdromia 

 is generally regarded as a subgenus, and Brocher has described 

 and figured them.* The larva lives in mud in streamlets, tbe 

 pupa being also aquatic. 



The perfect insects frequent the borders of woods and lakes, or 

 humid places, generally on low herbiige and in grass. 



302. Microdromia dorsalis, Bnm. 



CheUpoda dorsalis, Jjrinietti, Rec. Iiid. ^las. ix, p. :]3 (191.3). 



c? $ . Bead blackish ; proboscis pale yellowish, very stout at 

 the base, the upper piece prolonged into a long hard shining 

 rostrum ; antennte wholly pale yellowish white. Thoi-a.v brownish 

 yellow ; dorsum black or dark brown, the colour extending more 

 or less over the sides ; scutellum and metanotum concolorons with 

 dorsum. Abdomen brownish yellow ; the dorsum of each segment 

 black, thus forming a continuous black stripe from base to tip, 

 but the hind borders of some of the segments escape the black 

 colour ; venter brownish yellow. Genitalia in S large, wholly 

 black, rather complex, comprising at least a i)airof claspers, which 

 are stout at the base and with flexible finger-like appendages ; 

 also a long narrow \entral style. Legs \ery pale yellow ; fore 

 femora with a row of very short microscopic spines, fore tibiae 

 possessing two such rows ; the fore femora also have a row of 

 long stiff bristly hairs on the underside and two still longer ones 

 below near the base, Wiurjs clear, veins brown ; halteres pale 

 brownish yellow. 



Length, 2 mm. 



Described from three specimens in the Indian Museum, taken 

 at the edge of a small stream at Earogli, .Simla Hills, 5000 ft., 

 10. V. 1910 (Annandale). 



Genus PHYLLODROMIA, Zett. 



P/ii/l/odro}n!a, Zetterstedt, Isis, 1837, p. 31. 

 Chiro7?iantis, Ilondani, Dipt. Ital. Prod, i, p. 148 (I806), 

 Thcnnnodromia, Mik, Wien. Ent. Zeitg;. v, p. 278 (188G). 

 Litanomyia , Melaiider, Trans. Amer. Ent. Soc. xxviii, p. 231 (1902). 



Genotype uncertain. f 



Head rather elongate and flattened, broader than thorax : eyes 

 large, elongate, separated in both sexes, subcontiguous below 



* Ann. de Biologie Lacustre, iv, p. 44, figs. 1, 2 (1909). 



t There seems some obscurity as to the genotypes of Chdipocla and 

 PhyUodromia, which it is impossible to clear up here owing to the " Mem. Soc. 

 Sei. Lille" not being available in India. Rondani in I85G selected Empix 

 melanor-ephala , F., as type of Fhyllodroniia, the same species which Coquillett 

 chose as type of CheUpoda in 191U. 



