42 Yorkshire Naturalists' Union : Annual Report, 1920. 



being the capture, near Hull, by Messrs T. Stainforth and G. B. Walsh, 

 of JJviisciis ciycumflexus F. in fair numbers. 



Hymenoptera. — Mr. R. Butterfield writes : — The outstanding 

 feature with regard to this section is the discovery, in March, of consider- 

 able numbers of the small bee, Ardrena ruficrus Nyl. at Adel, near Leeds, 

 by Mr. A. E. Bradley. Its burrows had not been previously found in 

 Britain, and only a few examples of the bees had been taken, recorded 

 from Scotland, and a few said to be from Yorkshire, obtained 75 years 

 ago. These are in the possession of Dr. R. C. L. Perkins, but no particu- 

 lars are known. 



The season has been very disappointing, even the hardy social bees 

 and wasps have been few in numbers. During the fine weather, in March, 

 the early bees were abundant, and Andrena gwynana K. and A . nigroanea 

 K. were common in places. Mr. A. E. Bradley has made some interesting 

 observations as to the relationship of some of the species of Andrena to 

 the inqui lines of the Genus Nomada. He has found Nomada jabriciana 

 associated with Andrena angusiior at Adel. The only new bee that I 

 have to record is Andrena suhopaca Nyl., from Keighley and Grassington. 

 I captured a specimen of Megachile circumcincta Lep., near Bingley, in 

 June. I have not previously seen any of the leaf-cutting species in the 

 western hilly districts of Yorkshire. 



There are a few additions to the Saw flies, including Tenthredopsis 

 e.rcisa Thom . , T. palmata Geoi., T. tristior, Pachyprotasis variegata Fall., 

 and Priophoriis padi. 



Neuroptera and Trichoptera. — Mr. G. T. Porritt writes that very 

 little appears to have been done in these orders. He found Tinodei, 

 aureola in plenty during July, about dripping rocks in Pennyspring 

 Wood, Huddersfield, a species hitherto only recorded in the county from 

 Haybum Wyke. The local Stenophylax vihex also occurred at Dalton, 

 Huddersfield. Dr. W.J. Fordham has sent for determination a number of 

 species taken by himself, but they were received too late for incorporation 

 in this report. 



Diptera. — Mr. Chris. A. Cheetham reports. — During the year close 

 on 300 additions have been made to the published Yorkshire diptera 

 list, by looking over old collections and unpublished lists and by increased 

 activity in the field ; many more will doubtless be added as the year's 

 collections are worked over in the winter. 



A notable feature has been the first sectional meeting under the 

 leadership of our referee, Percy H. Grimshaw. 



The summer has lacked the hot sunshine that some diptera delight in, 

 good collecting days have been few. Many species which were fairly 

 plentiful in igig have not been met with this year, especially Syrphida? 

 and other sun-loving groups ; those seen most frequently having aquatic 

 larvae [Eristalis, Helophilus, etc.), or semi -parasites like Volucclla 

 bombylans and V. pelliicida. 



Attention has been given to sweeping, and Acalyptcrate Muscidae and 

 Anthomyida; seem fairly up to the average, but perhaps Dolichopodidae 

 were less numerous than usual. 



Hemiptera. — Dr. W. J. Fordham writes : — Complete lists are not 

 yet to hand. It is hoped that a preliminary list of Yorkshire species 

 may shortly be published, to form a basis for future work, and an appeal 

 is hereby made to all members of the Entomological Section to take 

 any Hemiptera they may come across and forward them to one or other 

 of the members of the Committee. 



Arachnida. — Mr. W. Falconer writes : — Nothing new has been added, 

 except amongst the. mites, but eight kinds of spiders, new to V.C. 65, 

 were recorded in the account of the Union Meeting at Reeth (ante August, 

 pp. 254-5). Mr. W. P. Winter sent in three small collections, amongst 

 which was one female, Evansia tnercns Cb., taken from a nest of the ant, 

 Myrmica ruginodes, at Goitstock, V.C. O3, by Mr. Rosse ]3utterheld, 



Naturalist 



