A HISTORY OF SUFFOLK 



common at Westleton and Tostock, E. frenator at Fordley and Kenton, and I have taken both 

 Acrotomus lucidulus in Tuddenham Fen and Cteniscus succinctus in the Bentley Woods. The distinct 

 Exyston c'lnctulum has been once or twice noticed about Bury and Aldeburgh. 



Among the Prosopi have been observed Exochus mansuetor, commonly on the windows of Monk 

 Soham House, E. Jlavomarginatus at Assington in May, E. consimilis, and at Lowestoft E. nigripalpls, 

 Chorinaeus crutator has occurred to me at Henstead and Burgh Castle ; C. funebris at Covehithe ; 

 and, in April, Tuck has sent me C. talpae from Tostock. The Schizodontes '' are somewhat more 

 fully represented by Bassus laetatorlus, which abounds from Lackford bridge to Slaughden beach ; 

 B. alhoslgnatus rare at Southwold ; B. annulatus and B. varicoxa at Monk Soham, and both B. 

 tricinctus and B. multicolor are common locally. Zootrephus holmgreni is not uncommon about Tud- 

 denham Fen and Barton Mills, with Z. rufiventris from Brandon and the Lowestoft Broads. 

 Homoporus cinctus and H. hixonarius occur sparingly at Tostock, Finborough Park, and the Bentley 

 Woods ; H. graculus at Barnby Broad and Tuddenham Fen ; H. porectorius at Assington Thicks 

 and Tuddenham Fen ; H. tarsatorius and H. flavoUneatus in woods in the spring ; H. fissorius 

 appears to be very rare on Angelica flowers at Foxhall in September ; H. ornatus is abundant in 

 the coast marshes at Southwold, and H. dimidiatus everj'where in August ; H. longiventris and H. 

 crasstcrus were first taken in Britain in Suffolk ; H. pumilus at Tostock and Brandon ; the only 

 specimen of H. strlgator was taken on flowers in Henstead Marsh in August 1898; H. signatus is 

 common in July at Monk Soham ; Tuck has found the widespread H. elegans at Bury, and H. 

 xanthasp'is first occurred in England in Tuddenham Fen in August 1905, with the commoner H. 

 h\grobius, Promethu! sulcator, P. festivus, and P. pulchellus are also abundant ; one j of P. laticarpus has 

 turned up at Henstead, and I have P. dorsalis from Monk Soham, Brandon, and about Lowestoft, 

 and P. cagnatus from Southwold, Brandon, Clare, and Barnby Broad. Paget says Metopius micra- 

 torius used to occur in Yarmouth gardens, sometimes abundantly ; and Curtis records it from 

 Southwold, where Mr. Tuck recently found it.^' I have once seen it in the Bentley Woods, but 

 it is certainly now quite rare in Suffolk. 



The last sub-family, the Pimplinae, comprises such handsome insects as Rhyssa persuasoria, the 

 parasite of the wood-wasp, which measures 4 inches over all ; this giant has been taken in Ipswich 

 by Baylis and by Tuck at Bury and Rushbrooke. Ephialtes imperator is said to have been common 

 about Yarmouth by Paget, who may, however, have referred to E, carbonarius, which has occurred 

 to Tuck at Tostock and to me at Bramford ; and I once found a male of the exclusively marsh 

 Acaenitus arator on Angelica flowers in Tuddenham Fen. Perithous mediator and P. varius, parasites 

 of fossors, are not uncommon. Of the genus Pimpla we can record the common P. instigator^ 

 which I have bred from Smerinthus iiliae at Beccles and from Arctia menthastri at Ipswich ; P. 

 fxaminator diuA P. turionellae commonly in June; P. rufator at Ipswich in 1893 ; P. flavonotatOy 

 not uncommon upon reeds in the Southwold salt marshes ; P. brevicornis, P. scanica, always abundant 

 with P. pomorum and the handsome P. diluta, upon Coniferae in the spring ; P. alternans bred from 

 a moth's pupa in Barnby Broad ; P. oculatoria and P. graminellae not uncommon ; P. calobata at 

 Ipswich, and P. didyma, of which I once bred two dozen examples of both sexes from a single 

 larva of Odonestis potatoria. P. robuita occurs about Lowestoft in August, P. sagax at Fin- 

 ningham and Eye, P. strigpleuris at Aldeburgh and Tostock in September, and P. detrita is common 

 everywhere upon flowers in August. Ischnocerus rusticus has been found at Copdock, and Clistopyga 

 incitator at Ipswich by Flatten and at Tostock by Tuck. The interesting genus Glypta is well repre- 

 sented by G. bicornis, G. pedata^ and G. annulata in Barnby Broad ; G. nigrina on windows of Monk 

 Soham House ; G. ceratites and G. bifoveolata are generally distributed ; G. trochanterata and G. 

 jncisa at Ipswich ; G. sculpturata at Sibton Abbey ; G. parvicornuta in Tuddenham Fen ; G. 

 elongata at Dunwich ; G. pedata at Lackford Bridge ; G. elongate at Southwold ; G. haesitator at 

 Belstead in early June ; G. scalaris at Burgh Castle ; G. femorata at Stanstead ; G. resinanae at 

 Tostock with G. mensurata and G. lugubrina, while G. Jlavolineata and G. annulata are common on 

 the flowers. I have found Schizopyga analis at Barton Mills ; and Stilbops vetula, with Colpomeria 

 Jnanis, abundantly in all our woods in May. Lissonota maculatoria has occurred to Tuck at Tostock ; 

 L. verberans at Brandon, L. variabilis at Foxhall ; L. bellator and L. commixta are common every- 

 where in August, with L. sulphurifera and L. cylindrator on flowers. Meniscus murinus is often 

 abundant upon blackthorn blossom in April ; M. catenator occurred to me in Barnby Broad in July 

 1906, and M. setosus was found at Bury by Wratislaw. Phytodietus segmentator has turned up at 

 Stoke by Clare, P. coryphaeus at Dunwich, and Oedemopsis scabriculus is locally common on flowers 

 in August. The curious and widely distributed Xylonomus pilicornis has only once been seen in 

 Suffolk, in the marshes near Wortham Ling in June. 



In recently working out material for the third volume of my Ichneumons of Britain^ I found 

 the following Pimplinae to also inhabit our county : — Pimpla arundinator is common in marshy 



" Cf. Trans. Ent. Soc. 1905, pp. 419-38. " Cf. Trans. Norf. and None. Nat. Soc. vii, 14. 



116 



