38i. 
ADDITIONS TO YORKSHIRE DIPTERA LIST. 
CHRIS. A. CHEETHAM. 
In the pages of The Naturalist during the year many species 
have been added to the Yorkshire List of Diptera; about 
twenty of them are due to the work of the Galls Committee, 
several will also be found in the reports of the Yorkshire 
Naturalists’ Union’s Excursions, and in other short notes. 
The following list will bring the year’s additions to slightly 
over a hundred. Thanks are again due to those who have 
kindly helped with difficult groups ; a large proportion of 
this list is due to Mr. F. W. Edwards’ interest in the Fungus 
gnats and Limnobids ; Mr. J. E. Collin has helped with the 
Pipunculids and Acalypterates ; the type collection presented 
to the Yorkshire Naturalists’ Union by Mr. P. H. Grimshaw 
has again solved many troubles. It is only possible by such 
generous help to deal with a large and difficult group like the 
Diptera. 
Sclav a thomae L. Mickley Woods, -/9/21, C.A.C. 
Trichosia splendens Winn. Austwick, -/8/21. C.A.C., (F.W.E.). 
Dynatosoma fuscicorne Mg. Crag Wood, 1/6/21, C.A.C. (F.W.E.). 
Mycetophila fungorum Dz. (punctata). Crag Wood, 6/6/21, C.A.C. 
(F.W.E.). 
M. vufescens Ztt. ( ovnata Stph.). Crag Wood, 6/6/21, C.A.C. (F.W.E.). 
M. formosa Ldst. Crag Wood, 2/6/21, C.A.C. (F.W.E.). 
Rhymosia domestica Mg. Austwick, 25/6/21, C.A.C. (F.W.E.). 
Allodia grata Mg. Crag Wood, 7/5/21, C.A.C. (F.W.E.). 
Phronia vitiosa Winn. (Dz.). Austwick, 4/6/21, C.A.C. (F.W.E.). 
Coelosia flava Staeg. Crag Wood, 1/6/21 , C.A.C. (F.W.E.). 
C. tenella Ztt.. (flavicauda Winn. ) . Austwick, 16/10/21, C.A.C. (F.W.E.) 
Tetvagoneuva sylvatica Curt. Crag Wood, 6/6/21, C.A.C. (F.W.E. ). 
Mycomyia cinerascens Ztt. Nidd, 3/8/21 ; Austwick, 3/7/21, C.A.C. 
(F.W.E.). 
M . incisuvata Ztt. Austwick, 10/9/21, C.A.C. (F.W.E.). 
M. winnertzii Dz. Austwick, 3/7/21, C.A.C. (F.W.E.). 
M. affinis Staeg. (flava Winn.). Austwick, 10/9/21, C.A.C. (F.W.E.). 
Platyuva fasciata Ltr. (Mg.). Crag Wood, 28/6/21, C.A.C. (F.W.E.). 
P. semirufaMg. Farnley, 7/9/21, C.A.C. (F.W.E.). 
Macrocer a fasciata Mg. Austwick, 17/7/21, C.A.C. (F.W.E.). 
M . centralis Mg. Crag Wood, 28/6/21, C.A.C. (F.W.E.). 
Boletophila saundersii Curt. Crag Wood, 15/8/21, C.A.C. (F.W.E.). 
Simulium veptans L. Pateley, 22/7/22, C.A.C. 
Chironomus anthracinus Ztt. Chelker, this was listed as C. moerens Wlk. 
(The Nat., 1921, p. 410). Mr. Edwards now considers it to be 
anthracinus Ztt., the Bramhope species is moerens Wlk. 
Dicranomyia dumetorum Mg. Nidd, 2/8/22, C.A.C. (F.W.E.). 
Molophilus corniger de Meij . Pateley, 7/8/20, C.A.C. Mr. Edwards 
says this is the first time he has seen a British specimen. 
M. ohscurus Mg. Austwick, 28/5/21, C.A.C. (F.W.E.). 
Ormosia pentagonalis Lw. Bilsdale, 12/6/21, C.A.C. (F.W.E.). 
Rhypholophus varius Mg. Austwick, 10/9/21, C.A.C. (F.W.E.). 
Erioptera minor de Meij. Nidd, 2/8/21, C.A.C. (F.W.E.). 
Lipsothrix errans Wlk. Austwick, .23/7/21, C.A.C. (F.W.E.). 
1922 Dec. 1 
