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



as the main hosts, plus Amygdalus, Cydonia, Crataegus, Mespilus, Rosa, Rubus and 

 Sorbus species, with two non-Rosaceae genera, Quercus and Salix. To these can be 

 added the following records of larvae feeding on plants, all of which are in the 

 Rosaceae family: Amelanchier lamarckii at the R.H.S. Garden, Wisley, Surrey, on 

 15.ix.93; Pyracantha 'Mohave' planted outside the Pelham-Clinton building at Dinton 

 Pastures Country Park, Hurst, Berks., on 18.ix.93; Cotoneaster horizontalis in a 

 private garden at Royston, Herts., on 26.x. 75. 



Tenthredo zona Klug. Benson describes this as sparingly common south-east of 

 the Wash/Severn line, mainly on dry heaths and chalk downs, but gives no host plant. 

 On 2.vi.90 two larvae were found feeding on the foliage of perforate St John's wort, 

 Hypericum perforatum L., growing in chalk grassland at White Downs, near 

 Westcott, Surrey. They went down into the soil on 4-5.vi.90 and a male adult emerged 

 on 24.iv.91. 



Pachyprotasis antennata (Klug). Benson gives Filipendula and Fraxinus as host 

 plants. Females were reared on 3.vi.85 and 18.vi.85 from two larvae found on alder, 

 Alnus glutinosa L., growing on Wisley Common, Surrey, on 1 1.x. 84. The larvae were 

 eating irregular-shaped holes in the margins and centres of the leaves. 



Pachyprotasis rapae (L.). This is one of Britain's most common sawflies and Benson 

 records it feeding on Betonica, Scrophularia, Solidago, Fraxinus and, added in the 

 section c supplement, Antirrhinum. On 22.vi.83 larvae were found on plants of Stachys 

 officinalis 'rosea' growing at the R.H.S. Garden, Wisley, Surrey. Nearby plants of 

 Stachys macrantha were unaffected. The larvae make irregular holes in the foliage, 

 mainly in the centre of the leaf rather than at the margins. A female emerged on 15.V.84. 



Pachyprotasis variegata (Fallen). Benson gives the potato, Solanum tuberosum L., 

 as a host plant and also notes that it has been found feeding on the Continent on 

 Digitalis lutea L. Larvae were found feeding on the foliage and flowers of rough 

 hawkbit, Leontodon hispidus L., growing at The Sheepleas, near West Horsley, Surrey 

 on 4.vii.81. A female emerged 29.iv.82. Larvae were also found at the same site on 

 3.viii.85 feeding on the flowers of ox-eye daisy, Leucanthemum vulgare Lam. A female 

 emerged 29. v. 86. Like many other members of the subfamily Tenthredininae the adults 

 of P. variegata are predators of other small insects. One female readily ate the small 

 fly and a larva of the hawthorn webber moth, Scythropia crataegella (L.), that it 

 was offered. 



Macrophya albicincta (Schrank). Benson included this species in his key but it was 

 later realized by Chevin, H. (Annls Soc. Ent. Fr.fN.S.) 1975; 11: 253-260) that this 

 was in fact two species, albicincta (Schrank) and alboannulata Costa. Benson gives 

 the host plants for his albicincta as Sambucus nigra L. and sometimes Valeriana 

 officinalis L. The food plants given for the split species are Sambucus species for 

 M. alboannulata and Sambucus species and Valeriana officinalis for M. albicincta. 

 On 21 .vii.84 solitary larvae were found making rounded holes in the leaves of guelder 

 rose, Viburnum opulus L., in Baynes Wood, near Greenham Common, Berks. 

 Several males and females of Macrophya albicincta (Schrank) were reared between 

 24 and 30.iv.85. 



Priophorus pallipes (Lep.). This common species is recorded by Benson as feeding 

 on various Rosaceae plants such as Crataegus, Fragaria, Prunus, Pyrus and Sorbus, 

 and also on Betula. On ll.ix.92 plants of red chokeberry, Aronia arbutifolia, on 

 sale at a garden centre at Mayford, near Woking, Surrey, were having their foliage 

 extensively holed by this sawfly. This North American plant is in the Rosaceae family. 

 A female emerged on 1.x. 92; normally larvae found late in the year will overwinter 

 as prepupal larvae and adults emerge during May- June. — A. J. Halstead, R.H.S. 

 Garden, Wisley, Woking, Surrey GU23 6QB. 



