( 99 ) 



in. Notes on the biolog;/ of i;oine itiqullines and parasites 

 in a nesl of Bombiis derliaiiiellu.s Kirby; with a de- 

 scription of the larva and jMj)a of Epuraea dejjressa 

 Illig. (= aestiva Auctt. : Cokoptera, Nitidulidae). 

 By Hugh Scott, M.A., Sc.D., F.E.S., Curator in 

 Entoniology, University of Cambridge. 



[Road Foljiiuiiy 4tli, l!)20.] 

 I. Introduction ...... ^ ' ^(jo 



II. Biological notes oil 7/m(%Cf>//M{ (/cwa (Tachinidae) . Jou 



^^^- " " A'pkioclmeta rata (Phoridae) and its 



jjarasite Orthoaiigma pumilum. (Braconidae) . .100 



IV. Antherojihagns patlens {Qryiiio\)\mg{diie) : wintering and 

 pupation; occurrence of the genus in bees' nests; 

 references to descriptions of larvae; ajuiual cycle of 

 Antherojjhagus ..... 101 



V. Epuraea depressa {mtidu\k\ae) : pupation; other records 



of occurrence in bees' nests; biology of other species 



of Epuraea ; food of the larvae of E. depressa . . 105 



VI. Description of the larva of Ejmraea depressa . 107 



^^^' " » pupa „ „ , 122 



VIII. General Summary ..... inn 



1. Introduction. 



The purpose of this ])a])er can be gathered from the hst of 

 headings above. While working temporarily at the Im- 

 perial College of Science, London, I received from Miss 

 L. E. Cheesman, on July 19, 1918, part of a nest of Bombus 

 derhamellas Kirby, the " Ked-shanked Carder-bee," con- 

 tannng a number of insects of more than one Order which 

 are frequently found as iiuiiates of humble-bees' nests 

 (20) The nest had been sent to Miss Cheesman at the 

 Zoological Society's Gardens from Hoo, near Kochester, 

 and the species of bee was determined from some dead 

 workers in the nest. The other inmates were living and 

 vvere as follows : {a) two larvae of Volucella sp., which 

 died without c(jmpleting their metamorphosis ; (6) several 

 larvae from which adults of the Tachinid fly, Brachycoma 

 devia,weio bred ; (c) pupae from which emerged a Phorid 

 tly, Aphiochaeta rata, and a Braconid parasite, Ortho- 

 stiyma pumilum; (d) several larvae from which adults 



TRANS. ENT. SOC. LOND. 1920.— FARTS I, U. (jULY) 



