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Yn ei gyfrol ar wenyn a chadw gwenyn 'Y Fêl Ynys' (1972), gwnaeth Melfyn R Williams ddefnyddio 'Gwenyn Unig' am y 'Solitary Bees' a 'Gwenyn Cymdeithasol' am 'Social Bees' - ac mae i'w weld yn derm eithaf cyffredin ar y we. From: Discussion of Welsh language technical terminology and vocabulary [mailto:[log in to unmask]] Ar ran/On Behalf Of Sian Roberts Sent: 19 Chwefror 2015 14:06 To: [log in to unmask] Subject: Re: solitary bee Grêt - diolch - dyna roeddwn i wedi'i roi dros dro. Siân On 2015 Chwef 19, at 1:45 PM, David Bullock wrote: Mae 'gwenyn unigol' yn digwydd yma ac acw ar y we (e.e. www.rspb.org.uk/hfw/factsheets/hfw30c.pdf<http://www.rspb.org.uk/hfw/factsheets/hfw30c.pdf>), a dyna ddefnyddies i yn ddiweddar wrth sôn amdanyn nhw. From: Discussion of Welsh language technical terminology and vocabulary [mailto:[log in to unmask]] On Behalf Of Sian Roberts Sent: 19 Chwefror 2015 13:33 To: [log in to unmask]<mailto:[log in to unmask]> Subject: solitary bee Solitary Bees (Hymenoptera) There are more than 200 species of solitary bee in Britain. They are so named because, unlike honeybees and bumblebees, they do not live in colonies. Rhywun yn gwybod? Diolch Siân