Observations on the biology of Afrotropical Hesperiidae (Lepidoptera). Part 9. Hesperiinae incertae sedis: Zingiberales feeders, genera of unknown biology and an overview of the Hesperiinae incertae sedis
Author
Cock, Matthew J. W.
Author
Congdon, T. Colin E.
Author
Collins, Steve C.
text
Zootaxa
2016
4066
3
201
247
journal article
51187
10.11646/zootaxa.4066.3.1
efd9df5e-1439-4724-ae76-a219f7c3ce70
1175-5326
264653
680D0FB4-F3BC-4562-B214-631067287218
Hypoleucis ophiusa
Hewitson, 1866
This species occurs in two subspecies, the nominate ssp. (
Figure 25
) from
Senegal
to
Gabon
and western
Zaire
, and ssp.
ophir
Evans from
Uganda
(
type
locality), the rest of
Zaire
and
Zambia
(
Ackery
et al
. 1995
).
FIGURE 25
. Adult
Hypoleucis ophiusa ophiusa
, Port Harcourt
, Nigeria [© D. Motshagen].
Food plants.
Larsen (1991)
indicates that one species of
Hypoleucis
is recorded from
Costus
; this is probably based on MJWC’s records for
H. ophiusa
(below).
Vuattoux (1999)
reared this species six times at Lamto,
Côte d’Ivoire
from
Costus afer
and
Paracostus englerianus
(=
Costus englerianus
, see
Specht & Stevenson 2006
).
Larsen (2005)
describes finding caterpillars on
C. afer
at Obudu Town,
Nigeria
(
Oct 1996
): the leaf shelters are made of ‘rolled leaves and the caterpillar devours three-quarters of the leaf before changing shelter, and on this occasion almost defoliated the plant. Pupation took place at the very base of a leaf, attached by the cremaster at the stem of the food plant, without making a shelter’. The lack of a shelter may reflect the lack of leaves rather than normal biology (T.B. Larsen pers. comm. 2015). Vande weghe (2010) gives the food plant as
Costus
.
MJWC reared
H. ophiusa
in
Côte d'Ivoire
(MJWC 89/213) and
Cameroon
(MJWC 90/207) on
Costus
sp(p). The food plant in
Cameroon
was also the food plant of
Caenides dacena
and is shown in
Figure 28
under that species; it was identified as either
Costus afer
or
C. lucanusianus
.
Caterpillars did not accept
Hedychium
sp. (
Zingiberaceae
) in captivity. The following observations were made on two caterpillars collected in the Forêt du Yapo,
Côte d’Ivoire
in
June 1989
(MJWC 89/213), except the head and spiracle measurements are the average of all material available.
Leaf shelters.
The leaf shelters are distinctive; a leaf of about
150-200mm
length is cut diagonally at about 1/ 3 from base, from one margin, through the mid-rib to within a
10mm
of the other margin; the hanging distal portion is then rolled upwards to make a tubular shelter of about
5mm
diameter, and
50-80mm
length. The leaf shelter found near Douala,
Cameroon
(MJWC 90/207) was noted to be similar.
FIGURE 26.
Caterpillars of
Hypoleucis ophiusa ophiusa
, collected on
Costus
sp., Forêt du Yapo, Côte d’Ivoire, 3 Jun 1989; MJWC 89/213B.
1
, penultimate instar, detail of head in anterodorsal view; moulted and photographed 14 Jun; 15mm;
2
, final instar, detail of head in anterodorsolateral view; moulted and photographed 14 Jun; 21mm;
3
, final instar, dorsolateral view, as #2.
Caterpillar.
The penultimate and n-2 instars are translucent dark green with a black, rugose head, paler ventrally (Figure 26.1); the head of the former measured 0.8 x
1.2mm
wide x high, and of the later 1.8 x
2.1mm
. The final instar (Figure 26.2–3) measured
21mm
about half way through the instar; head 2.3 x 3.3 wide x high, indent at vertex, widest towards base; rugose; very light brown with brown line adjacent to epicranial suture and from vertex laterally to stemmata; brown line down centre of each epicranium; half of adfrontals against frons brown. Body dull, translucent green, dorsal line darker; pronotum a narrow black plate on posterior margin T1, stopping short of the spiracles; spiracles light brown, those of T1 and A8 more conspicuous; pale subcutaneous patch around and above spiracle A8; all legs concolorous except those of T1 slightly brown.
Pupa.
MJWC found that in captivity the pupa is formed in the last caterpillar leaf shelter. No description was prepared of the pupa from life. It is similar in shape to those of
Semalea
spp. and
Xanthodisca
spp., but the colour is light green apart from a dark dorsal line on thorax and abdomen, brown spiracles and the light brown rim to the spiracle of T1 (
Figure 27
). The emerged pupa is white. The rim of spiracle T1 measures
0.44mm
dorsally,
0.42mm
ventrally,
0.29mm
posteriorly and the hole is
0.34mm
wide dorsoventrally. The pupa took 20 days to complete development, while another from
Cameroon
(MJWC 90/207) took 26 days.