210 Orthorrhapha brachycera. 



short hairs, which are generally arranged as uniserial dorsocentral 

 and quadriserlal acrostichal bristles. Scutellum has four to six mar- 

 ginal bristles. Metapleura bare. Abdomen not specially slender; it 

 consists in the usual way of eight segments, the last is small or hid- 

 den. The male genitalia are small, forming a small forceps. In the 

 female the abdomen is pointed, terminating with a shorter or longer 

 ovipositor. Legs not specially long, the hind legs the longest. They are 

 clothed with shorter or longer hairs; tibiæ without apical spurs. 

 There are two claws, two pulvilli, and a small, linear, bristle-bearing 

 empodium. Wings with the cubital vein unforked {? furcata Zett.), 



Fig. 87. Wing of Eu. Gyllenhali. 



thus one cubital cell; the discai vein forked, thus four posterior cells, 

 and three veins going from the discai cell to the margin, the third of 

 which is the upper branch of the postical vein, which closes the 

 discai cell below; the lower branch of the discai vein sometimes 

 {myrtilli) not reaching the margin; the lower branch of the postical 

 vein somewhat recurrent, meeting the anal vein almost rectangularly ; 

 the anal vein long, straight, reaching to or quite near to the margin; 

 the basal cells somewhat large; the anal cell considerably shorter than 

 the second basal cell. Stigma present. The axillary lobe well devel- 

 oped, Alula not present, the margin here haired. Alar squamula 

 small, fringed at the margin. 



The developmental stages of the genus are not known. 



The species of Euthyneura occur in woods on more or less hu- 

 mid piaces. Zetterstedt records the various species from the leaves 

 and flowers of Betula, Salix and Sorbus. The species are for a great 

 part boreal. Of the nine recorded European species four are only 

 known from Scandinavia, and in all eight occur in Scandinavia to ils 

 northern parts, only one species is only known from middle Europe. 

 The species are all rare, and become especially rare towards the 

 South; thus Strobl notes, that of the four species known froniAustria 

 there has only been taken one female of each. 



Of the genus 9 species are known from the palæarctic region, 

 two have hitherto been found in Denmark. 



