112 MYCETOPHILID.E. 



Geuus EXECHIA, Winn. 



Exechia, Winnertz, Verb, zool.-bot. Ges. Wien, xiii, p. 879 (1863). 

 Parexechia, Becker, Insekten von Jan Mayan, p. 62 (1886). 

 BracMfdicrania, Skuse, Proc. Liun. Soc. N. S. Wales (2) iii, p. 1215- 

 (1888). 



Genotype, T{j}iilafungorum,de Geer ; designated by Johanusen.* 



Bead roundish, compressed in the front part, situated deep in 

 the thorax ; front broad. Eyes longish-round ; lateral ocelli large, 

 closely contiguous to the eye-margins, middle ocellus either very 

 small, placed in a groove on tlie front, or entirely wanting. 

 Palpi incurved, four-jointed, 1st joint small, 4th longest. Antennae 

 projecting forward, somewhat arcuated, 16-jointed, 1st joint of 

 the scape cyathiform, 2nd much shorter than the 1st, cupuliform^ 

 both setiferous at the tip ; flagellar joints cylindrical, somewhat 

 compressed, with minute downy pubescence. Thorax ovate, 

 highly arched, with a short pubescence, setose on the lateral and 

 hind borders ; scutellum semicircular, setose, metanotum steep. 

 Abdomen slender, in the male with six, in the female with seven 

 segments, narrowed at the base, cylindrical or a little compressed ; 

 anal joint of the male rather large, forceps moderate or small ; 

 ovipositor of the female very short, with two small lamellae. 

 Ler/s long, slender, intermediate and hind femora rather broadly 

 compressed, tibiae spurred, and with lateral spines, fore pair with 

 one distinct range of very minute spines on the inner side, and" 

 a few small spines along the outer side, intermediate pair wdth 

 a range of small spines on each side, hind pair with two ranges of 

 rather longer spines on the extensor surface ; plantae of meta- 

 tarsus of hind tarsus with minute setulae. Winr/s shorter than„ 

 subequal to, or a little longer than the abdomen, oblong oval, with 

 rounded base, and with microscopic setulae arranged in longi- 

 tudinal rows. Costal vein ending at tip of 3rd vein, some 

 distance before the wing-tip ; auxiliary vein veiy short, complete 

 or incomplete, turning down towards the 1st longitudinal ; 3rd 

 vein beginning before middle of wing, angled at base, thence- 

 sti-aiglit ; anterior cross-vein moderately long, oblique, 4th longi- 

 tudinal forked very soon after contact with cross-vein, before 

 middle of wing, the branches approximately parallel ; 5th longi- 

 tudinal forked about its middle, approximately under fork of 4th, 

 the branches distinctly diverging ; 6th and 7th veins distinct but 

 short. 



Range. Europe, Greenland, and Eastern Himalayas. 



Life-history. Apparently nothing known beyond that the larvae 

 live in fungi, and that the perfect insects appear in woods and 

 bushes in the spi-ing. One species is said to do considerable 

 damage in Europe to mushrooms. 



Gen. Ins., Fasc. 9.3, p. 106 (1909). 



