THE MYCETOPHILID/E. 131 



/ L. fasciola, Mg. 



\L.flavicornis,Ug. 

 G.fasapetuiis,Ms^.= \ ^ . . ^ ,• 



■' ^ ° Z. co7isobrina, Curtis. 



\Z. crucigera, Zett. 



This gnat is yellowish, with testaceous ventral surface. Palpi 

 yellow ; antennae brown, yellowish at the base. I^egs yellowish- 

 brown, with brown tarsi. Wings with a yellowish tinge, testaceous at 

 the base, and having a gray sub-apical band. The first longitudinal 

 vein short, united to second longitudinal vein by a transverse veinlet ; 

 fork of the fifth longitudinal vein much nearer than the fork of the 

 fourth to the base of wing. This is an abundant species, and is 

 especially common on oak and lime trees. 



There are about a dozen of this genus found in England — the one 

 described is the commonest. The larvre live in fungi and rotten 

 vegetable matter. 



The larva of G. fasciola, Mg. i^fascipennis) is described by Van 

 Roser* as follows : " The transparent, smooth and slimy larva lives 

 in delicate webs on the surface of tree fungi." They strongly 

 resemble Sciophila larvae in habits and structure. 



G. Winthe?/iii, Lehm. = Leia Wintheniii Wlk. (Ins. Brit.). 



This species is testaceous. The thorax has three brown stripes,, 

 the middle one being divided. Wings with three gray bands, which 

 seem to vary, sometimes being almost absent. Abdomen has a dark 

 band on each segment at the ventral edge. An autumnal species. 

 Recorded by Dale at Glanville AV'ootton. 



G. stibfasaata, Mg. = Leia Marklifii, Zett., is the only other cer- 

 tain British species ; there are many others recorded as British, but 

 their records want verification. 



G. pulchella, Curt., is a bright ochreous species, with a dark spot 

 on the thorax ; the first and second abdominal segments have a black, 

 spot ; third, fourth and fifth have a black ring ; sixth and seventh 

 black. Recorded by Curtis and Haliday, and taken on umbelliferae. 



(Mycetophila, Mg. 

 Genus Anaclinia, Wtz, = < Leia^ Macq. 



{Boletina, Zett. 

 This genu» resembles Leptoinorphus, but the ocelli are nearly of the 

 same size, and are arranged in a straight line. Abdomen flattened 

 laterally. Wings microscopically hairy ; third vein, simple ; fourth 

 and fifth forked ; sixth vein not extending to the edge of wing. T/ie 

 casta extends over the apex of third vein. 



*' Verz. Wiirltenib. Dipt., 1834. 



9—2 



