BR. J. I'NI. NAT'. HIST., 7: 1994 



1*7 



Fig. 4. Rachel Thomas and Kent Li finding larva of Eupanacra mydon on underside of leaf 

 of Alocasia odora, Tai Po Kau woodlands. 



Acosmeryx shervillii Boisd., 1875 form pseudonaga Butler, 1881 



We only saw this moth at Tai Po Kau, where it turned up on both visits, but not 

 elsewhere on the dates in between. Tennent (1992) found it at three additional 

 localities and considered it common and widespread. It is shown in D'Abrera (1987) 

 as A. socrates form socrates Boisd. from which it is easily distinguished by the median 

 dark grey triangles on the underside of the abdomen (Kitching in Tennent, 1992). 

 Like those of Tennent, ours are of the dark form pseudonaga. 



Eupanacra mydon mydon (Walk., 1856) 



This species was not seen in numbers during Tennent's light trapping but was noted 

 nectaring in the evening and after dawn, so it may well be under-represented at light. 

 K. L. considers the species common on the edges of densely wooded places, the borders 

 of the reservoirs and on abandoned farmland that has been encroached by woody 

 plants. Bascombe, Young and K. L. have found and reared the larva on Alocasia 

 odora Koch (Araceae). K. L. finds that the eggs occur mainly on plants by roadsides 

 and other edges of woodland but not on plants within dense stands of trees or amongst 

 thick undergrowth. We found a larva in the woodland at Tai Po Kau by turning 

 over the large leaves of the known foodplant, which was growing on the bank 

 of a stream by a bridge, shaded overhead by mature trees. The larva was at rest 

 along the midrib near the tip of the leaf with its head just below the tip. We 

 photographed the larva and left it in situ (Plate III, Fig. 2 and Fig. 4). K. L. found 

 four eggs and a larva (19 mm in length) the previous year, on 4 July 1992, in woodland 

 by the Aberdeen Reservoir Road. One larva pupated on 15 July and the adult emerged 

 on 28 July 1992. 



