60 n. C. EFFLATOUN. 



apical fourth of Ist M2 cell; inferior angle of Cu cell more or less 

 drawn eut iiito a point which is never long. 



TYPE : Aciura coryli Rossi (1890) 



The species of this genus appear to be uucommon. The only 

 species so far known from Egypt, which is one of the typical forms, 

 is an important and interesting addition to our dipterous fauna. 

 Not more than eight species of this genus are known from the Pa- 

 laeartic Région, of thèse only three are typical {femoralia, Rob.- 

 Desv., rotundiventris, Fall. and tibialis Rob.-Desv.); the others 

 show a différent w'ing pattern. The European species A . femoraJ'i.< 

 Rob.-Desv. has been bred from the thalamus of Phlomis fructicosin 

 bv Frauenfeld. 



ACIURA TIBIALIS. Robine.\u-Desvoidy. 

 (PI. IV fig. 8 and PI. I fig. 18) 



Rob.-Desv., Mvod.. 773.3. (1830); Trypet., 30. 2. 1. 11. f. 1. 

 (1862); 8cHiN., Faun. Austr., II. 113. (1864); Lw., Zeitschr. f.d. 

 ges. Naturw. XXX1V.2. (1869); Rond., Dipterol. Ital. Prodr., 

 VIL (Ortalid.) 37.2. (1871); Beck., Annuair. d. Mus. Zool. d 

 TAcad. Imp. 8c. d. St. Petersb., XVII. 644, 314. (1912). 



aagates, Lw., Linn. entoni. I. 505. t. III. f. 16. (l'njpetd) (1846); 

 ScHiN., Verh. zool. -bot. Ges. Wien. VIII. 653. 24. (1858). 



DIAGNOSIS: — A small, very shining black species, Avith 

 beautiful black wings which possess hyaline indentations and hya- 

 line discal spots. 



3Ial(' and Feviale. Length of body : 3.2 mm.: ovipositor • 

 0.6 mm.; wing : 2.9 — 3.2 mm. 



DESCRIPTION:- Frons sliining dark rcddish-brown to 

 almost blackish, usunlly even darker near the margin of the eyes; 

 face and cheeks yellowish-brown and entirely covered with a very 

 minute whitish pulverulence ; proboscis dark yellowish to reddish- 

 brown and bearing a fow bristly hairs; palpi small, with the small 

 bristles mostlv pale, })ut some black; occiput shining black; vertex 

 dark reddish-brown likc the frons but bhukened around the ocellai' 

 triangle; autennae reddish-yellow, with the rounded third joint 

 covered v/ith a very minute pale yellow pubescence and the arista 

 almost bare, blackish on its apical half but reddish-yellow on its 



