PTEROMALIDAE OF N.W. EUROPE 827 



Hemitrichus seniculus (Nees) 



Pteromalus seniculus Nees, 1834 : 101, 423, $. 

 Pterotnalus Phylacis Walker, 1848 : 120, 185, o*. syn. n. 

 Dimachus {Hemitrichus) rufipes Thomson, 1878 : 54, $. 

 Uriella rufipes Ashmead, 1896 : 222-3, 6* ?■ 

 Hemitrichus assimilis Masi, 1922 : 158-159, ?. 

 Hemitrichus seniculus (Nees) Delucchi, 1955a : 173. 



Type material. Pteromalus seniculus Nees. Delucchi (1955a : 173) stated that he 

 had found, in Naturhistorisches Museum, Vienna, a specimen of seniculus marked 

 " Or. Ex." [Original Exemplar] ; this specimen agreed with Nees' description and 

 Delucchi evidently regards it as lectotype. 



Pteromalus phylacis Walker. One male, LECTOTYPE (possibly holotype), 

 bearing a Waterhouse label. It is a very small specimen' (length 17 mm.) with 

 unusually short funicular segments, the first being hardly 1 -5 times as long as broad, 

 the sixth even shorter. I have, however, seen other rather similar males in a 

 reared series with normal males of seniculus, and I think phylacis is probably within 

 its range of variation. 



Hemitrichus rufipes Thomson. One female, clearly the holotype, labelled 

 " Lhn 24/7 ". 



Uriella rufipes Ashmead. Lectotype female, U.S.A., Ohio, in U.S.N.M. (not 

 seen) ; it was re-examined by Gahan and Wallace, who placed Ashmead's species 

 in synonymy with H. rufipes Thomson (1950 : 97). 



Hemitrichus assimilis Masi. Syntypes, two $, Italy, Isle of Giglio, iv.1901 and 

 i(?)i904, in Museo Civico di Storia naturale, Genova. The species was synonymized 

 with seniculus (Nees) by Delucchi (1955a : 173) after comparing the respective types. 



Britain, France, Sweden, Germany, Central Europe, Italy ; North 

 America. 



Biology. Most often found in association with stored products. The published 

 records include as hosts Lepidoptera, Coleoptera, and Diptera. Gahan & Wallace 

 (1950 : 98) suggested that this indicates that some of the records may be wrong. 

 There is a female in the Hope Dept., University Museum, Oxford, reared at 

 Summertown, Oxford " from Ptinus tectus Boield. [Col., Ptinidae] in dog-biscuits ". 

 Occasionally specimens have been captured in open country. Boucek (1954 : 61) 

 recorded Eurygaster maura (L) [Hem., Pentatomidae] as a host. Imagines May- 

 June, September. 



Hemitrichus oxygaster Boucek 



Hemitrichus oxygaster Boucek, 1965c : 19, $. 



Type material. Holotype $, Moldavian S.S.R., Sadovo, 24.viii.1963 (Boucek), in 

 Narodni Museum, Prague (Cat. no. 26.000). 



Czechoslovakia, Moldavian S.S.R. 

 Biology. Unknown. Imagines in August. 



