NOTES ON THE CHINESE LARVAEVORIDAE IX. HYSTRIOMnA PORTSCHINSKY

The present paper deals with five Chinese Larvaevoridae of the genus Hystrio-myia Portschinsky. Among them two species are described as new to science and one species is recorded for the first time in China. The types of the new species are deposited in the Peking Institute of Zoology, Academia Sinica.Hystriomyia rubra sp. nov. (Figs. 7, 8, 9)Head, thorax and abdomen black in ground-colour and with different coloured long erect dense fur-like hairs. Hairs on occiput palegrey, on dorsal surface of posterior 2/5 of thorax and on scutellum pole-yellow, on dorsal surface of posterior half of abdomen reddish yellow, and those on rest regions of body black.(?). Frons as broad as 4/5 of eye, interfrontalia twice as wide as parafrontalia, postocular bristles in 3-4 rows, slender and curved forward. Orbital bristles wanting, frontal setae descending to parafacialia, anteror one of them reaching the level of lower side of eye, parafacialia and jowls with black setae and hairs. Antennae black, long and stout, second segment 4/7 as long as third, arista incrassate, first and second segments elongate, but first slightly shorter than second. Palpi brownish yellow, as long as third segment of antenna. Setae on dorsal surface of thorax (a. dc. ia) hardly disti-guished from hairs or fully absent, st 0+1; wing grey but basal 1/3 white, on median part from costal margin to media with an inconspicuous dark transverse band; lower calyptra greyish white, with slightly yellow pollens but fringed with whitish long hairs; poiser fuscous; pulvilli and claws black slightly longer than last tarsal segment. Abdomen black with orange-yellow markings on lateral areas of third and forth segments, each of these segments with a row of yellow marginals and 3-4 irregular rows of discals, lobes of fifth sternite rather short (Fig. 7). Superior and inferior forcipes shown as figs. 8, 9.(?). head with two reclinate orbinatal bristles, second antennal segment 5/6 as long as the third, pulvilli and claws shorter than last tarsal segment, posterior margins of fifth to eighth sternites of abdomen with reddish yellow hairs.Body length about 9 mm.Holotype (?), Chinghai Province (Yushu, 4,300-4,700m), 23. Ⅶ. 1964. Allotype (?), Chinghai Province (Yushu, 4,400m), 23. Ⅶ. 1964. Paratypc (?), same as the allotype.Hystriomyia Pallida sp. nov. (Figs. 10, 11, 12)Colour of body and hairs very similar to that of foregoing new species, but body larger, more pale hairs on dorsal surface of posterior 3/5 of abdomen, frons as broad as eye, pulvilli and claws of (?) slightly shorter than last tarsal segment, lobes of fifth sternite rather long. Superior and inferior forcipes shown as in Figs. 10, 11, 12.Body length 11 mm.Holotype (?), Szechwan Province (Kangding 3,500m), 7. Ⅶ. 1959.