. An account of British flies (Diptera). Diptera -- Great Britain. NEMATOCERA. 39 The Cecidomyzidaj, Hal. Tipularins GallicolK, Meig. Cecidomynse, Rond. Cecidomiites, Newm. ICecidomyzides, Fig. 6. — Cataclia latipcs. A, Ungues and pulvillus of C. latipes. This is one of the most important families of the Nematocera,''' and contains a very large number of extremely minute insects, characterized by the following points : " Eyes lunate, ocelli very often absent. Antennce moniliform, composed of thirteen joints in ? , 24 in (^, at least, and ornamented with short verticil
. An account of British flies (Diptera). Diptera -- Great Britain. NEMATOCERA. 39 The Cecidomyzidaj, Hal. Tipularins GallicolK, Meig. Cecidomynse, Rond. Cecidomiites, Newm. ICecidomyzides, Fig. 6. — Cataclia latipcs. A, Ungues and pulvillus of C. latipes. This is one of the most important families of the Nematocera,''' and contains a very large number of extremely minute insects, characterized by the following points : " Eyes lunate, ocelli very often absent. Antennce moniliform, composed of thirteen joints in ? , 24 in (^, at least, and ornamented with short verticillate hairs. Very few veins are present in the wings, which are often hairy. Thorax devoid of transverse sutures. Legs long, coxk short, femora elon- gated and thin, tibiae destitute of ; Taschenberg \ describes the Cecids generally as follows : Extraordinarily small. Colours change in death. Head com- paratively large, proboscis short, palpi generally four-jointed ; rather large eyes, generally bare, ocelli absent in most species. Antennae long, often very long, globular or cylindrical, depressed or stalked, articulations varying in number according to the sex. Thorax arched, scutellum small. Abdomen cylindrical, eight-ringed. Legs very slender, tibiae without spurs, tarsi small, with one pulvillus (Fig. 6, A). Wings large, broad, rounded in front, decreasing at the root, edged with hairs, often hairy at the surface. The radial, discoidal, and anal veins are wanting, so that there are only three to five veins. Sub- * This family is included by Osten-Sacken in his True Nematocera. f Taschenberg's " Praktische Insekten-Kunde," Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Theobald, Fred. V. (Frederick Vincent), 1868-1930. London : E. Stock
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherlondo, bookyear1892
