前天人生第一次看見這隻藍色的蜜蜂, 上網查了一下, 好似叫杜鵑蜜蜂, 但又說杜鵑蜜蜂是一大類, 請ching 指教.

likely Thyreus emarginata 凹盾斑蜂
http://www.hkwildlife.net/Forum/viewthread.php?tid=17802

[ 本帖最後由 banderbear 於 2016-5-31 22:38 編輯 ]

Thyreus emarginata is not recorded from HK and any ID to that are likely incorrect. It is extremely difficult to ID Thyreus sp based on photo and only males are relaible for identification, however this maybe T. centrimaculata

T. centimaculata has not been reported from China before.    There were may Thyreus spp. reported as found in HK but it seems there were only two species found here based on various photos published in different sources.  T. emarginata has been reported from HK and is widely distributed in S. China covering whole of Guangdong.   That said, the literature identification could still be wrong.

It is possile that T. emarginata has been recorded in China, however, Thyreus are notoriously difficult to identify, and unfortunately it is very difficult to ascertain the validity of Chinese records in the litterarture. Point in case are the more or less useless issues of Fauna Sinica on Hymenoptera. However, T. emarginata seems to be an invalid synonym of Crocisa emarginata Lepeletier, which is a junior synonym of T. nitidulus, species which is not recorded north of the Philippines. Note that the very well maintained and informed bee page of Discover Life does not mention this species.
In our soon to be published checklist of HK bees, we cite 6 species of Thyreus occuring locally of which T. centrimaculata, material collected locally has been identified by a reputable specialist.
To be noted is that normal photography is useless for ID of Thyreus, and my attempt at naming the above species is in fact an illusion!.

[ 本帖最後由 Christophe 於 2016-6-10 16:21 編輯 ]