. Fig. 97. Wing of S-imllida. there are thus three cubital cells; discai vein forked and thus four posterior cells; the discai cell long, sending three veins to the margin, the third is the upper branch of the postical vein, closing the discai cell below; the lower branch of the postical vein is rectangular to the anal vein; this latter reaches the margin; the first basal cell slightly longer than the second, and the anal cell a little shorter than the second basal cell. Stigma present. Axillary lobe small, the angle very obtuse. Alula not developed, the margin here with hairs. Alar squamula s
. Fig. 97. Wing of S-imllida. there are thus three cubital cells; discai vein forked and thus four posterior cells; the discai cell long, sending three veins to the margin, the third is the upper branch of the postical vein, closing the discai cell below; the lower branch of the postical vein is rectangular to the anal vein; this latter reaches the margin; the first basal cell slightly longer than the second, and the anal cell a little shorter than the second basal cell. Stigma present. Axillary lobe small, the angle very obtuse. Alula not developed, the margin here with hairs. Alar squamula small, haired at the margin. The development stages are not known. The genus comprises only one species, also found in Denmark. 1. S. pallida Loew. 1858. Loew, Zeitschi'. fiir gesammt. Naturw. XI, 455, et 1871. Beschr. eur. Dipt. II, 253, 138. — Kat. palåarkt. Dipt. II, 267. Male. Vertex and frons somewhat dark yellow, the ocellar triangle grey; epistoma, proboscis and palpi yellow. Occiput yellow with short hairs. Antennæ short, yellow, darker towards the apex; the third joint pointed ovate, compressed, with a short style. Thorax yellow, with an indication of four, slightly darker stripes; it is very short and sparingly haired. Scutellum with short, yellow marginal bristles. Pleura yellow. Abdomen likewise yellow, with short, yellow hairs. Venter yellow. Exterior genitalia large; the lower lamellæ directed upwards and with a vertical impression, indicating a division into two lobes, the posterior of these is the highest and above it is drawn out into a forwards pointing process; the upper lamellæ are some- what triangular, pointing forwards in over abdomen and with a little tooth in the upper margin. Penis is very thick, curved upwards and forwards. Legs yellow, very short-haired with yellow hairs. Wings 15*
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishercopenhagengecgad
