Observations on the biology of Afrotropical Hesperiidae (Lepidoptera). Part 7. Hesperiinae incertae sedis: grass and bamboo feeders
Author
Cock, Matthew J. W.
Author
Congdon, T. Colin E.
text
Zootaxa
2014
3872
4
301
354
journal article
10.11646/zootaxa.3872.4.1
3278c375-6c89-42a2-b7ac-24b9bb91730e
1175-5326
251860
8FECCFC1-7CA9-4A90-B881-4BD40157AD99
Chondrolepis
Mabille, 1904
(in Mabille
1903–1904
)
In his review of the genus,
De Jong (1986)
found that based on an analysis of adult characters
Chondrolepis
seems to form a monophyletic group with
Ploetzia
and
Moltena
, with
Zophopetes
as their nearest relative. We have treated the early stages of the palm feeders
Ploetzia
and
Zophopetes
in
Cock
et al.
(2014)
, while
Moltena
will be considered in a future part of this series. We defer comparison of the characters of the early stages of this group of genera until then.
Congdon & Larsen (2012)
described two further species making a total of nine now known.
Chondrolepis uluguru
Larsen & Congdon
was described and reared from the
Uluguru
Mountains of north-east
Tanzania
, and
C. ducarmei
Larsen & Congdon
was described from North Kivu Province,
DR Congo
. The genus is associated with montane forests in Africa.
Chondrolepis niveicornis
(Plötz)
is relatively widespread and adapted to more open and lowland habitats, but the other species are restricted to particular highland or mountain areas.
The conspicuously white antennae seem to be associated with red eyes and crepuscular habits. They are certainly effective signals at dusk; for example, MJWC has watched a male
C. leggei
(Heron)
feeding in the last light, with only the antennae visible. Similarly, in the Aberdare Mountains of
Kenya
, T.B. Larsen (pers. comm. 2014) observed a male courtship flight in dull weather in very dark montane forest, hovering above a seated female; only the white antennae of the male were visible as they moved slightly forwards and backwards as a fine white-V.
When
De Jong (1986)
reviewed the genus, the only food plant record available was for
C. niveicornis niveicornis
(Plötz)
feeding on a broad leaved grass of river banks and swamps.
Le Pelley (1959)
records the food plant in
Uganda
as
Imperata cylindrica
, and this is probably the origin of this food plant record in
Sevastopulo (1975)
,
Kielland (1990)
,
Larsen (1991)
,
Ackery
et al
. (1995)
, and
Heath
et al
. (2002)
.
Dickson & Kroon (1978)
describe the food plant as a broad-leaved grass that grows on river banks and in swamps, which is referred to as
Panicum deustum
by
Pringle
et al
. (1994)
and
Heath
et al
. (2002)
.
Observations reported here (and in
Larsen 1991
) suggest that grasses will be the food plants for the whole genus. Although several different broad leaved species seem acceptable, probably the habitat is just as critical in determining the food plant.