236 BR. J. ENT. NAT. HIST., 13: 2001 



Legs yellow, with femur 3 narrowly brown apically. Tibia 2 with 3 anterior, 1 

 anterodorsal (beyond anterior setae), 4 dorsal, 2 short posterior (near tip) and 3 long 

 ventral setae. Tibia 3 with 7 anterior (4th to 6th setae progressively shorter), 

 anterodorsal and 5 dorsal (without shorter interspersed setae) setae. Tibia 2 with first 

 two rows and tibia 3 with first anterior row of setulae (adjacent to anterior setae) 

 dark brown, the rest on 3 mainly yellowish with the second row only brown on the 

 apical third. 



Wing yellowish with two more or less strong brown markings: a spot over Rs and 

 the base of the median fork, which is weaker and almost interrupted in cell r 5 ; a 

 preapical band distal to tip of R b reaching tip of R 5 so filling the end of cell r b 

 narrowed basad behind R 5 and extending across median fork in which it is 

 interrupted. Radial veins except Rs strongly setose below, R with 32-36 setae below, 

 r-m with 2-^ setae but vein tb bare beneath. Haltere yellow. 



Abdomen dark brown with genitalia (figured by Chandler, 1988) yellow. 

 Gonostylus with ventral stylomere bearing 4 strong spinose setae on its distal 

 margin, the outermost longer and strongly bent in the middle; dorsal stylomere 

 bluntly triangular with 2 long setae apically. 



Wing length 2.4-3.0 mm. 



Female. Not certainly recognised. 



Holotype male, ENGLAND, Surrey, Chobham Common, Gracious Pond, 

 16.x. 1984 (Chandler, deposited in NMS). 



Paratypes: ENGLAND: 1 male, same data as holotype; 1 male, Bucks, Burnham 

 Beeches, 13. v. 1990; 1 male, Berks, Windsor Forest, Highstanding Hill, 27.vii.1991; 1 

 male, Berks, Dinton Pastures Country Park, Sandford Copse, 7.x. 1998 (all 

 Chandler). 



Etymology. The name refers to the bent spines on the gonostylus. 



Discussion. Chandler (1988) recorded this species as new to Britain under the name 

 gratiosa Winnertz, 1863 and figured the male genitalia. However, according to A.I. 

 Zaitzev (pers. comm.) he has examined specimens of both this species and of a 

 species agreeing better with the genitalia figures by Dziedzicki (1915) with the 

 gonostylar spines shorter and not bent, which he considers the true gratiosa, so the 

 British species is here described as new. 



As indicated by Chandler (1988) it is close to M. luctuosa Meigen in most external 

 characters, differing in the shining mesoscutum and tibia 2 with 3 ventral setae 



Mycetophila eppingensis sp. n. (Figs 40-44) 



Male. Head shining dark brown; clypeus grey dusted. Antenna with scape, pedicel 

 and base of first flagellomere yellow, rest brown; flagellomeres from second onwards 

 nearly twice as long as broad. Palpus yellow. 



Thorax shining dark brown with broad yellow humeral area on each side of broad 

 median brown stripe to fore margin and narrower yellow prescutellar patch on each 

 side. Scutellum mainly dull yellow, brown basally. Pleura and mediotergite dark 

 brown. Decumbent mesoscutal and anepisternal setae yellow, stronger marginal 

 setae including postalar, prescutellar, two pairs of strong scutellars and strong setae 

 on prothorax dark brown; short setae on laterotergite yellow, stronger darker setae 

 on posterior margin of anepisternum and upper margin of anepimeron. 



Legs yellow except dark brown apical quarter of femur 3. Tibia 2 with 3 anterior, 1 

 anterodorsal (beyond anterior setae), 5 dorsal, 2 short posterior (near tip) and 3 long 

 ventral setae. Tibia 3 with 7 anterior (4th to 6th setae shorter), anterodorsal, 6 

 dorsal (basal short, but no shorter interspersed setae) and 2 short weak posterior 



