PTEROMALIDAE OF N.W. EUROPE 255 



4 (3) Length i-6 to 2-7 mm. Antennal clava slightly shorter than, or at most as long 

 as, the three preceding funicular segments together. Fore wings not 

 shortened, and not markedly narrowed . . . mundus (Walker) (p. 256) 



Length 1-4 to 1-7 mm. Antennal clava slightly longer than the three pre- 

 ceding funicular segments together, sometimes equalling three and a half 

 segments. Fore wings often shortened and narrowed, sometimes hardly 

 reaching the apex of the gaster . . . laevicollis Thomson (p. 257) 



(Males) 



1 Antennae apparently with six funicular segments and a two-segmented clava, 



the sixth funicular segment being separated from the clava by a deep 

 constriction, though not apparently by a peduncle. Large species, 2-75 mm., 

 body bronze-black ; head, mesoscutum, and scutellum extremely finely and 

 delicately alutaceous, with minute piliferous punctures ; antennal scape 

 reaching slightly above level of vertex . . fumipennis Thomson (p. 252) 



Antennae with five funicular segments and a three-segmented clava. The 



other characters not present in combination ...... 2 



2 (1) Antennal scape (Text-fig. 190) reaching above level of vertex, with a row of 



minutely-pitted foveae along its front edge ; combined length of pedicellus 

 and flagellum i-6 to 1-7 times the breadth of the head, the flagellum more 

 slender than in the species which follow . . diversus (Walker) (p. 256) 



Antennal scape (Text-fig. 189) not reaching above level of vertex, without 

 foveae along its front edge ; combined length of pedicellus and flagellum 

 1-35 to 1-45 times the breadth of the head, the flagellum stouter than in 

 diversus ............ 3 



3 (2) Larger, 1-55 to 2-4 mm. ; funicular segments (Text-fig. 189) slightly to 



considerably longer than broad, the first as long as or longer than the 

 pedicellus ; fore wing not narrow . . . mundus (Walker) (p. 256) 



- Smaller, 1-3 to i-8 mm. ; funicular segments quadrate or practically so, at least 



slightly shorter than the pedicellus ; fore wing relatively narrow (2-35 to 

 2-65 times as long as broad) . . . laevicollis Thomson (p. 257) 



Semiotellus sp. indet. 



The characters of this rather distinct undescribed species are given in my key- 

 above. 



Germany : Isle of Rugen, Baabe, 2 $, vii.1960 (Boucek). Dr. Boucek very 

 kindly allowed me to examine these. 



Semiotellus fumipennis Thomson 



Semiotellus fumipennis Thomson, 1876a : 203,^, ?$. 



Type material. Syntypes, 2 <$. LECTOTYPE bears a tiny dark green ticket, 

 also a label " fumipenis Thorn.". Thomson mentions the female in his diagnosis 

 but I cannot find any female specimen in his collection. 



Sweden ; ? England [a female captured by me at Wytham Wood, Berkshire, 

 12.vi.1964, amongst Phalaris arundinacea L., resembles the lectotype male except 

 in sexual characters and could be the female of fumipennis']. 



Biology. Unknown. 



