PTEROMALIDAE OF N.W. EUROPE 133 



cJ. Differs from the female as follows : 



Legs paler, the fore and mid femora testaceous with only a dark stripe beneath the latter. 

 Antennal scape fully three quarters the length of an eye ; pedicellus relatively shorter, about 

 1 -5 times as long as broad and about two thirds as long as the first funicular segment ; combined 

 length of pedicellus and flagellum about 1 -5 times the breadth of the head ; flagellum sub- 

 cylindrical, slightly stouter than the pedicellus ; funicular segments subequal in length, 1-7 

 to 1 -8 times as long as broad ; clava nearly three times as long as broad, about equal in length 

 to the two preceding funicular segments together ; flagellum clothed with hairs whose length 

 is about half the breadth of the segments which bear them, and which stand out at an angle of 

 about 30 ; sensilla fairly numerous, in two rows on each segment, on some segments irregular, 

 almost forming three rows. 



The male differs from that of aculeata in having the metallic colour of the body darker ; the 

 gastral petiole rather longer and more slender, fully 3-5 times as long as broad ; the teeth of the 

 pronotal collar less strong ; the median carina of the propodeum absent except at the extreme 

 base. The antennal nagellum is perhaps rather more slender and has rather less outstanding 

 hairs, than in male aculeata (also in the latter the proximal funicular segments tend to be slightly 

 longer than the distal ones ; in average-sized specimens the first funicular segment is about i-8 

 times, the sixth 1-5 to i-6 times, as long as broad). 



LECTOTYPE $ in Westwood coll. (ex coll. Nees), Hope Department, University 

 Museum, Oxford. It is pinned and bears the following labels (the handwriting on 

 each is noted in square brackets) : (1) " 8 " on a pink square [Westwood] ; (2) 

 " $ n.(?)Sept 12 " [Nees] ; (3) " Chrysolampus pedunculiventris Esenb. 2. 134. 

 Sphegigaster p. Spin. Class. 7. 149. E Mus. Esenbeck " [Westwood]. I think that 

 Westwood was mistaken in referring it to pedunculiventris , although it may have 

 been placed with Nees' series of that species (see his remarks, 1834 : 135), because it 

 agrees much better with the description of nigricornis. 



Additional material examined. England : Berkshire, Wytham, 1 $, 14. vi. 1952, 

 1 $, 10. x. 1963 (Graham) ; Lancashire South, Freshfield, 1 $, 23. vi. 1962 (Graham) ; 

 Middlesex, Scratch Wood, 3 $ bred in June 1955 from Melanagromyza dettmeri 

 Hering (K. A. Spencer) ; Northamptonshire, Salcey Forest, 1 $, 6.VU.1954 

 (Graham) ; Surrey, Bookham, 1 $, 10. v. 1956, reared from Melanagromyza sativae 

 Spencer (K. A . Spencer). 



England, Germany. 



Sphegigaster glabrata sp. n. 



(Text-figs. 94, 98, 107, 109) 



$. Head and thorax mainly, petiole, and coxae, dark bluish green ; occiput and pronotal 

 neck bluish black ; pronotal collar, mesoscutum, axillae and scutellum brighter green ; gaster 

 black with greenish reflections. Mandibles testaceous with reddish teeth. Antennal scape 

 brown, testaceous at base ; pedicellus and nagellum fuscous, testaceous beneath. Legs (apart 

 from coxae) testaceous, the hind femora reddish medially ; fifth tarsal segment of all legs 

 fuscous. Tegulae and wing-venation testaceous, wings hyaline. Length 2-2 mm. 



Head unusually transverse, in dorsal view about 2-25 times as broad as long ; temples con- 

 verging very strongly and only slightly more than one quarter the length of the eyes ; POL 

 about 1 25 OOL. Eyes long-oval, 1-5 times as long as broad, separated by about 1-35 times 

 their own length. Malar space one third the length of an eye ; hollow of gena large, extending 

 about three quarters of the way towards the eye. Antenna (Text-fig. 107) inserted well above 



