BR. J. ENT. NAT. HIST., 7: 1994 



The smooth areas on the abdomen of pupal Chironomidae, previously called 

 Fensterflecken or Muskelmale/muscle marks are more accurately termed adhesion 

 marks. 



Acknowledgement 

 I thank Dr M. Hirvenoja for stimulating this investigation. 



References 



Hirvenoja, M. 1973. Revision der Gattung Cricotopus van der Wulp und ihrer Verwandten 



(Diptera, Chironomidae). Ann. Zool. Fenn. 10: 1-363. 

 Kriiger, F. 1941. Parthenogenetische Stylotanytarsus-\ar\tn als Bewohner einer 



Trinkwasserleitung. (Tanytarsus-Studien III: Die Gattung Stylotanytarsus). Arch. Hvdrobiol. 



38: 214-253. 

 Miall, L. C. & Hammond, A. R. 1900. The structure and life-history of the harlequin fly 



(Chironomus). 196pp. Clarendon Press, Oxford. 

 Saether, O. A. 1980. Glossary of chironomid morphology terminology (Diptera: Chironomidae). 



Ent. Scand. Suppl. 14: 1-51. 

 Thienemann, A. 1944. Bestimmungstabellen fur die bis jetzt bekannten Larven und Puppen 



der Orthocladiinen (Diptera, Chironomidae). Arch. Hydrobiol. 39: 551-664. 



BENHS FIELD MEETING 



Oakers Wood, Dorset, 22 May 1993 



Leader: Mick Parker. Eight members turned up for the daytime meeting, followed 

 by seven for the moth trapping session. Conditions were cloudy, slightly damp, but 

 warm and as a result, it was decided to work the outskirts of the main locality, heading 

 north through mixed woodland, west through wet heath, up on to dry heath, then 

 south into the main oak wood which by this time had dried out. 



Thirteen species of sawfly were noted plus a small number of other hymenoptera 

 of which Vespa crabro (L.) was the most obvious. The hoverfly list was rather better 

 with 23 species, including the RDB 1 species Chrysotoxum vernale (Leow), caught 

 sitting on bracken. Other uncommon species were: Brachypalus laphiformis (Fall.). 

 Brachyopa scutellaris (R.-D.) and Criorhina asilica (Fall.), all on Crataegus monogyna 

 L. flowers and Pelecocera tricincta, (Meig.), which was swept. None of these were 

 new to the Oakers Wood list. 



The evening session produced five moth traps. The evening was warm with frequent 

 showers. A total of 59 macros and 6 micros were recorded of which the most notable 

 were: marbled pug (Eupithecia irriguata Hiibn), ringed carpet (Cleora cineraria 

 D. & S.) and the little thorn (Cepphis advenaria Hiibn). As the evening wore on the 

 showers became heavier and we were worried that some M.V. bulbs might start 

 exploding — one did, mine! As I forgot to pack a spare, my collecting ceased about 

 midnight. Most of the moth records are due to the rest of the group, and to them 

 I am grateful. Thanks are also due to Mr John Shelly of Oakers Wood House for 

 permission to hold the field meeting. 



