Phytomyptera. 453 



oiitwards. Antennæ inserted well above middle of the eye, third 

 joint about thrice as long as second, rather broad; arista with second 

 joint elongated, a little geniculate towards third. Thorax nearly 

 quadratic; three postsutural dorsocentrals, and three præ- and 

 three postsutural acrostichals; a præsutural intraalar bristle. Scu- 

 tellum with three marginal bristles on each side, the apical small, 

 Crossing; between the basal and subapical some bristly hairs. Four 

 sternopleural bristles. A pteropleural bristle above. Abdomen short 

 ovate; excavation on second segment small, not by far reaching hind 

 margin; only marginal bristles, on second segment none. Genitalia 

 relatively large. Legs not long; anterodorsal bristles on hind tibiæ 

 unequal; claws and pulvilli small; front tarsi in female simple. Wings 

 without apical and posterior cross- veins; cubital vein with only one 

 bristle at base; costal spine minute. 



The species are parasitic on small Heterocera. 



Of the genus three palæarctic species are recorded, one occurring 

 in Denmark. 



1, Ph. nitidiventris Rond. 



1845. Rond. N. Ann. Se. Nat. Bologn. 2, III, 25 et 1859. Prodr. Dipt. 

 Ital. III, 20, 1 et 1871. Bull. Soc. Ent. Ital. IV, 108, 1. — 1889. B. B. Denk- 

 schr. Akad. Wiss. Wien, LVI, 103, Tab. V, Fig. 89 et 1893. LX, 186, 37. — 1896. 

 Pand. Rev. Entom. XV, 90. — 1907. Kat. palåarkt. Dipt. III, 378. — 1921. 

 Baer, Zeitschr. f. angew. Ent. VII, 367. — Ph. nigrina 1924. Stein, Arch. f. 

 Naturgesch. 90, 6, 141. 



Male. Frons above nearly double as broad as the eye. Orbits, 

 cheeks and jowls greyish; frontal stripe reddish brown, narrower 



Fig. 94. Wing of Ph. nitidiventris. 



than the orbits. Vibrissæ distant and few in number. Orbits with 

 only a few hairs; below the orbitals a row of bristly hairs down to- 

 wards the middle of cheelcs; jowls with a few bristly hairs. Occiput 



