THE INSECTS OF MARTIN BECK, NOTTS. 
J. W. CARR, M . A. , F.L.S. 
Martin Beck Wood, through which runs the boundary between 
Yorkshire and Nottinghamshire, was visited by the Yorkshire 
Naturalists' Union on June 19th, 1920, and an account of the 
Excursion appeared in The Naturalist for August of that year. 
The entomology of the Nottinghamshire portion of the 
wood was investigated by a Nottingham contingent consisting 
of the Rev. A. Thornley, Dr. D. Hunter, and the writer, and 
a list of the Insects captured is appended. Coleoptera were 
very scarce, and nothing of importance was taken. Among the 
few Ichneumons collected, the unique male of Mesoleius 
ustulatus is of special interest. Diptera were more abundant, 
and several of these were new records for Notts., e.g. Hybos 
grossipes (common by the pond) . Rhamphomyia gibba, Norellia 
spinigera and Sciomyza brevipennis . 
All the Odonata, Neuroptera (except Coniopteryx) , and 
Trichoptera recorded by Mr. Porritt in the published report 
were also taken by us on the Notts, side, and are therefore 
not repeated here. 
I am indebted to Messrs. Claude Morley, F. W. Edwards, 
and J. E. Collin for assistance in identifying obscure species : 
a number of small Diptera are still undetermined. 
HYMENOPTERA. 
T ENTHREDINID AE . 
Belandria stramineipes Klug. Tenthredella livida L. 
Taxonus agrorum Fall. Tenthredopsis palmata Geoffr. 
ICHNEUMONIDAE. 
Cratichneumon annulator Fab. Microcryptus abdominator Grav. 
Ambly teles armatorius Forst. Pimpla detrita Holmgr. 
A lloplasta murina Grav. 
Mesoleius ustulatus Desv., This species was described by Desvignes 
in 1856 from a single female in the British Museum. No other 
specimen was known until I took the male at Martin Beck. 
JLathrolestus ungularis Thoms. Porizon harpurus Schr. 
Aculeata. 
Myrmica sulcinodis Nyl. Pemphredon lethifer Shuck. 
Crabro tibialis Fab. Andrena minutula Kirb. 
Passaloecus gracilis Curt. A. wilkella Kirb. 
JSfomada ochrostoma Kirb., common with its host, A .. wilkellai 
DIPTERA. 
Bolitophila hybrida Mg. Ochlerotatus maculatus Mg. 
Dixa laeta'Lw. ? Limnophila aperta Verr. 
Phamphidia inornata Mg. Leptis lineola Fab. 
Simulium equinumiL. Thereva nobilitata Fab. 
Bysmachus trigonus Mg., rather common on bare ground. 
i!922 Apl. 1 
