Observations on the Biology of Afrotropical Hesperiidae (Lepidoptera). Part 5. Hesperiinae incertae sedis: Dicotyledon Feeders
Author
Cock, Matthew J. W.
C / o CABI Europe - UK, Bakeham Lane, Egham, TW 20 9 TY, UK (e-mail: m. cock @ cabi. org; mjwcock @ btinternet. com)
m.cock@cabi.org
Author
Congdon, Colin E.
African Butterfly Research Institute (ABRI), P. O. Box 14308, Nairobi, Kenya (e-mail: colin. congdon @ gmail. com)
colin.congdon@gmail.com
text
Zootaxa
2013
2013-10-25
3724
1
1
85
http://dx.doi.org/10.11646/zootaxa.3724.1.1
journal article
134452
10.11646/zootaxa.3724.1.1
3fe084ed-d367-4d5a-9ed0-48882760ba96
1175-5326
5267833
7D05BB2E-4373-4AFB-8DD3-ABE203D3BEC1
Platylesches galesa
Hewitson, 1877
This widespread species was described from West Africa (
Hewitson 1877
) and reported from
Sierra Leone
, west to
Tanzania
and south to
Zimbabwe
and
Mozambique
. MJWC encountered this species in
Harare
,
Zimbabwe
; he did not see adults, but found a caterpillar (90/200) in the Botanical Gardens on a shoot of
Pa. curatellifolia
(
Figure 65
). In TCEC’s experience it is generally a species found in or near forest.
Larsen (1991)
lists
Pl. galesa
as a species that might occur in
Kenya
. Now that the food plant is known it should not be too difficult to track it down where the food plant occurs, if it is a Kenyan species.
Food plants
Murray (1959)
states that the food plants in
South Africa
are
Ehrharta erecta
and certain other grasses, but as discussed in the introduction to
Platylesches
, all records from grasses should be discounted.
Parinari curatellifolia
is now known to be a food plant of
Pl. galesa
, based on our and others’ observations, but probably first observed by Ivan Bampton in the 1980s. The record from a
Parinari
sp.
by MJWC (pers. comm. T.B. Larsen
1993 in
Woodhall 1994
) is actually from
Pa. curatellifolia
in
Harare
,
Zimbabwe
(90/200), and not from
Kenya
. Subsequent authors repeat this food plant (
Pringle
et al
. 1994
,
Henning
et al
. 1997
,
Heath
et al
. 2002
,
Woodhall 2005
,
Larsen 2005
). TCEC has reared
Pl. galesa
from
Pa. curatellifolia
in
Malawi
(Mt.
Mulanje
) and
Tanzania
(Rondo Plateau, southeastern
Tanzania
; Kihansi Gorge, Udzungwa Mts.) and northern
Mozambique
(Mt. Jao). The record by TCEC from a tall, woody species of
Parnari
in the Udzungwa Mountains in
Tanzania
(pers. comm. T.B. Larsen
1993 in
Woodhall 1994
) is from
Pa. excelsa
, and TCEC has also reared
Pl. galesa
from
Pa. excelsa
at Mt. Mabu,
Mozambique
.
Ovum
The ova shown in
Figure 66.1
were laid on the youngest leaves and stems of flush growth of suckers or saplings of about
1m
in the Botanic Gardens,
Harare
. A final instar caterpillar of
Pl. galesa
was found at the same time, but adults of
Pl. moritili
were also flying and the eggs could have been of either species. The living ova (
Figure 66.2
) are copper-orange in colour and would blend quite well with the hairs of the same colour on young flush growth (
Figure 66.1
). Once the ova eclose, they are white and quite conspicuous in situ as the newly hatched caterpillar leaves most of the shell uneaten.
Leaf shelters
The mature caterpillar from
Harare
had made a shelter by folding a leaf downwards along each side of the mid rib and joining the edges. The caterpillar rested on the midrib (
Figure 67.1
). Feeding was on the apical portion of the leaf and shelter, and in captivity most the leaf shelter was eaten.
Caterpillar
No detailed description was prepared, but the final instar caterpillar from Harare is shown in
Figure 67
. The colour and markings of the head of the final instar caterpillar are different from that of any other
Platylesches
spp.
documented so far. Caterpillars documented by TCEC from the Udzungus and Riondo Plateau,
Tanzania
, and Mt. Mabu,
Mozambique
, are almost identical.
Pupa
The caterpillar from
Harare
pupated between a leaf and the base of rearing container, and rather than disturb it, it was not documented.