Temnostoma. 553 



Geographical distribution: — Northern and middle Europe down 



into Spain and Italy ; towards the north to middle Sweden, It is also 

 recorded from Japan. 



45. Temnostoma St. Farg. et Serv. 



This genus is nearly allied to Spilomijia (and to the other allied, 

 non-Danish genera Milesia and Calliprohola) and the species are like 

 those of Spilomyia large wasp-like flies with yellow spots on thorax 

 and very conspicuous yellow bands on abdomen, but there is in this 

 respect the interesting difference that while the markings in Spilomyia 

 are due to the chitine itself being yellow, they are here caused by a 

 yellow pruinosity. Head slightly shorter than in Spilomyia ; eye-suture 

 a little shorter, eyes unicolorous. Antennæ inserted in the middle of 

 the head; they are shorter than in Spilomyia as the basal joints are 

 short, each shorter than the roundish third joint. Epistoma slightly 

 hoUowed below the antennæ, with a very small central knob and 

 below it slightly retreating; it is slightly protruding and a little 

 descending; it is black but yellow pruinose on the sides and hairy 

 only on the lower half including the lower side parts. Oral cone, 

 proboscis and mouth parts as in Spilomyia. Scutellum black. Legs 

 simple, hind femora without any process below. Wings with the sub- 

 costal vein near to costa in the apical part and the subcostal cell more 

 widely open than in Spilomyia-, cubital vein slightly curved; medial 

 cross-vein less oblique and less near to the apex of the discai cell; 

 discai cell with the lower apical corner angular and with a short 

 veinlet; anal vein ending normally; basal part of the radial with fme 

 bristles. No stigmatical cross-vein. Squamulæ and plumula as in 

 Spilomyia. 



The developmental stages of T. vespiforme are mentioned by Meigen 

 (Syst. Beschr. III, :233), who notes that Baumhauer brought to him in 

 spring some thick, almost oval, reddish grey larvæ, found in decaying 

 w^ood; they soon pupated and the imago escaped in May. One ofour 

 specimens is bred but no remarks are given about it. — The puparium 

 of the allied Calliprohola speciosa is described and figured by Mik 

 (Wien. ent. Zeitg. III, 1884, 199, Taf. III, Fig. 2-2 c); the author found 

 the full-grown larvæ at the end of March in a decaying stub of a 

 beech, they pupated the next day; the pupa is described as arched 

 above, flat below, slightly attenuated in front but more behind, and 

 it is interesting that it has here a somewhat long (6 mm) tail-shaped 

 prolongation with the spiracular process at the end; to judge from 

 Mik's figure the spiracular tube is telescopically retractile; the longer 



