waterstradti sp. n.
Callidula jucunda Felder sensu Holloway, 1976: 91, and
Kobes, 1990: 109.
12-14mm. The species is slightly smaller than jucunda with
narrower forewings that have clearer, paler orange markings. The dorsal zone of
the forewing and all the hindwing are yellower brown, and the latter in the male
does not have the pale costa of jucunda. The forewing orange markings are
of a slightly different configuration to those of jucunda, being more or
less separated into three components by dark brown bars or spots. The forewing
underside ground is almost entirely ochreous yellow, whereas in jucunda the
discal spot is a distinctly more orange area. In the male genitalia of waterstradti
the valve is somewhat triangular, as compared to a parallelogram in jucunda.
It has a more extensive zone of setae ventrally and a diagnostic patch of
them basally at the centre. The aedeagus vesica has fewer, longer cornuti in the
cluster. In the female the apodemes are shorter, and there is a greater zone of
sclerotisation associated with the signum in the bursa.
Holotype . NORD
BORNEO: Mont Kina Balu, 5.8.1903 (John Waterstradt).
Paratypes: 3, 1 as
BORNEO; Kina-Balu, recu de Staudinger, Janv.
1894, ex Oberthür colln; 1 (misc. families slide 15)
Kina-Balu 92-136 (A.
Everett); 1 (slide 10) SARAWAK: Gunung Mulu Nat. Park,
R.G.S. Exped. 1977-8 (J.D.
Holloway et al.) G. Api, 427550, 900m Camp, 20.4.1978; 1 (slide
7 ), 3
(slide 11), Cambridge Expedition to Mt Kinabalu 1965 (H.J. Banks, H.S. Barlow
& J.D. Holloway) various localities.
Geographical range. Borneo, Sumatra, Peninsular Malaysia.
Habitat preference. This is a predominantly montane species, recorded
infrequently from 1200m to 1930m on G. Kinabalu and singly at 900m on the
limestone G. Api in recent surveys.
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