The Hemiptera-Sternorrhyncha (Insecta) of Hong Kong, China-an annotated inventory citing voucher specimens and published records Martin, Jon H. Lau, Clive S. K. Zootaxa 2011 2011-04-29 2847 1 122 8Q6XV [151,289,1754,1780] Insecta Aphididae Animalia Hemiptera 18 19 Arthropoda subFamily Aiceoninae  Described from Taiwanbut three of Takahashi’s slides in TARI comprise specimens from  Litsea“monoptera”[?  monopetala] in HKin March 1940(Shu-Pei Chen, pers. comm.), referred to by Takahashi (1941c).   Aiceona robustisetaGhosh, M.R. & Raychaudhuri, 1973 A sample of aphids from  Machilussp.from Tsuen Wan (NT) was submitted to BMNH for determination in 2005, and this comprised only alatoid nymphs that were only determined as a species of  Aiceona. In November 2009a large sample of aphids from  Machilus chekiangensisat Tai Tam Country Park (coll. Lau), and also sent to BMNH, were found to match the earlier sample of nymphs. This species is characterised by having apterae almost entirely pale but for the hind tibiae which are evenly brownish to black; alatae have wing membranes that are not pigmented as they are in many other  Aiceonaspecies, combined with the only dorsal pigmentation on abdominal segments IV–VIII being the siphuncular sclerites. The HKmaterial appears to be conspecific with material in BMNH from  Eurya nitidain Thailandand from  Machilus bombycinain India( Assam), provisionally determined as  Aiceona robustiseta. This species appears to have the potential to cause considerable damage, with the Assamsample noted to have been causing defoliation of the host, and the 2009 HKsample also a very heavy infestation.   Aiceona titabarensis(Raychaudhuri & Ghosh, A.K., 1964) This aphid is common in HK, with several samples in BMNH and PPRD from  Litsea monopetala, L. rotundifoliaand  Michelia alba. Lee & Winney (1981)also list this species from HK, under its junior synonym  A. litseaeBasu & Hille Ris Lambers (1968). It may eventually prove that the HKrecords of  A. actinodaphnisand  A. titabarensis—see host plant quoted for  A. actinodaphnis, above—in fact concern only a single species, but examination of typematerial will be required to test this possibility.