A Monograph of Egyplian Diplera. 



3. XArSTHOGKAMi^IA SCJIIN. 



ScniN., Wieu. l'iitoni. Mcnalschr., IV. 2ir>. (|s(iO). 



.S')\7a\ )'.l/)'.— .S///rw////y//«x liid., Aimai. Soc. Eiilom. l"r., (<i). 

 W. \V\\\. I AVI If. 4. (1HS2). 



Modcialcly laryc Syrp/ins-Uke .specie.s whicli po.sscss conspic- 

 iious ypllovv or orange inai'kings on the sides of Ihe thorax ani) 

 the coloiirs on the whole aro stroiigly eontrasted on ail parts of 

 lidilv. It is very siniilar to Si/r/'/n/s hut i> disi in^iiislicd by 

 Ihe'well dclined orange marking.s which cxteiid to disliiict .si<lc 

 lincs on tlic thorax, and to ycllow or- orange spots on tlie pleui'îc. 

 I'"ace shining, waxy yellow, practieally devoid of puhescenoc, and 

 in the inale, dccreasing Un width, as it- descends. Eyes (luite 

 liare. Antcnnai wilh the second joint very short, and tlic third 

 Joint hcaring a l'athcr short, hare arista. 



Ahdonicii rathei' iiairow, with !lic sidc inargins almost 

 parallel (althongn in the Kui-;)pean species it niay be hroad and mar- 

 ginale); tlic yellovv markings arc very conspiciionsly contr'asted 

 against the black ground eolonr; piibescence slioit. 



IvCgs simple^ slendei' and almost hai(\ 



Wings with a venati;;n simiiar lo :ha1 of Sijr/i/i'/s. 



Not mneh is known abont the metamor})hoses of tliis genns ; 

 Verr'all states that the larva lias hecn bred from heaps of tnrf, 

 but I think that it is very likely that oiu' only Egyptian species 

 is aphidiphagous like the members of ils closcly allied gênera, 

 Si/rphiis and S/^/ucnrp/ioria. 



1. X. AF.GVPTIUM >VIIOI>. (l'i. IV. lii^ 7). 



A\'iKi)., Aus.serenrnp. Z\v;Mfl., II. \Xi.2d. (Syrphus). (1830); 

 L\v., (Kfv. Kong!. Vet. Akad. i'orhandl., XÎV. 1857.378.19. 

 (Syip/ius) (1858), Uipterenf. Sirndafr., I. 306.4. {Syrfhus) (1800) 

 et inPETERS: Reisc n. Mosamhiqne, Zool, V. 17. {Syrphus) (18G2); 

 Wai.k., The Rntom., V. 274.49. {Syrphus) (1871); Verr., Ti-ans. 

 Ent(mi. Soc. Lond., 1898.414.4. {Syrphus) (1898); Ripardo, The 

 Nat. Tlist. ofSokotra, 369.21. {Syrphus) (1903); Beck., Bez., Kert. 

 u. SteiN; Katal. Palaearkt. Dipt., III. 73. {Sphœrophoria), 



