Woody plant communities of southern South Africa and new distribution records for the rare dung beetle species Sarophorus punctatus Frolov & Scholtz, 2003 (Coleoptera: Scarabaeidae: Scarabaeinae)
Author
Strümpher, Werner P.
Ditsong National Museum of Natural History, PO Box 413, Pretoria 0001, South Africa.
Author
Daniel, Gimo M.
Department of Terrestrial Invertebrates, National Museum, 36 Aliwal Street, Bloemfontein, South Africa. & Department of Biological & Environmental Sciences, Walter Sisulu University, Mthatha, South Africa.
Author
Davis, Adrian L. V.
Invertebrate Systematics and Conservation Group, Department of Zoology, University of Pretoria, P / B X 20, 0028 Hatfield, South Africa.
text
Zootaxa
2022
2022-09-20
5188
4
396
400
journal article
148086
10.11646/zootaxa.5188.4.7
bfe3792a-c79a-4f98-8b01-cc3a4b6340e4
1175-5326
7095688
8897F13A-E9C1-4F30-9C96-B1931BC5418F
Sarophorus punctatus
Frolov & Scholtz, 2003
(
Figs 1–5
)
Type
locality.
Keurboomstrand [Garden Route District Municipality,
Western Cape Province
,
South Africa
].
Type material examined.
Holotype
, male (
TMSA
, aedeagus extracted): “S.Afr., S.
Cape
[
Western Cape Province
] | Keurboomstrand | 34[°].00[′]S-23[°].27[′]E” || “
8.12.1976
,E-Y:1301| groundtraps [pitfall traps] 8days | leg.EndrödyYounga” || “
SAROPHORUS
|
tuberculatus
| Cast. | det.Y.Camberfort” || “
HOLOTYPUS
|
Sarophorus
| punctatus | A. Frolov det. 2002” || “
TM
SOUTH Africa
|
TMSC
08252”.
Paratypes
,
5 females
(
TMSA
): same data as
holotype
.
Frolov & Scholtz (2003)
originally described this species from
two males
and
six females
, all with the same data. We studied
five female
paratypes
as well as the
holotype
male.
Material examined representing new distribution records (
21 specimens
).
SOUTH AFRICA
.
Eastern Cape
Province
.
3♂
,
1♀
Olifantskop Pass,
33°19′08″S
25°56′23″E
,
25-27.i.2021
, GM Daniel & WP Strümpher, site 1, forest (deep valley), pitfall trap baited with pig dung + chicken livers, (BMSA; BMSA(C) 121989, 121990, 121993, 121998).
6♂
,
2♀
Zuurberg Pass,
33°22′46″S
25°42′37″E
,
25-27.i.2021
, GM Daniel & WP Strümpher, site 1, forest (deep valley), pitfall trap baited with pig dung + chicken livers (BMSA; BMSA(C) 117000–11705, BMSA(C) 122112).
4♂
,
1♀
idem
(
TMSA
, preserved in 99% ethanol).
2♂
,
2♀
Makhanda [formerly Grahamstown], Signal Hill,
33°19′57″S
26°32′27″E
,
26-28.i.2021
, GM Daniel & WP Strümpher, site 2, indigenous forest (deep valley), pitfall trap baited with pig dung + chicken livers (
TMSA
).
Distribution and broad habitat associations.
The new distribution records show that
Sarophorus punctatus
is more widespread than previously thought with a disjunct range that now comprises Keurboomstrand (
Western Cape Province
-
type
locality), Olifantskop Pass, Zuurberg Pass, and Makhanda (
Eastern Cape Province
- new provincial distribution records) (
Fig. 5
). The considerable expansion of the species’ known range, further inland to the east of the
type
locality, suggests that forest patches of the Western and
Eastern Cape
have been under sampled. Such under sampling of isolated forest fragments could explain the apparent rarity of
S. punctatus
and some other forest associated members of the genus (e.g.,
S. frolovi
Roets, 2017
). Additional sampling is needed in the two provinces to get a better understanding of its distribution, rarity and habitat preferences. These efforts may help to retrieve critical data on additional dung beetle species, which are known to be associated with woody vegetation, in the Forest, Fynbos and Renosterveld biomes.
Biological notes.
As a generality, species of the genus
Sarophorus
seem to show a bias to vegetation offering shade (
Davis
et al.
2020
). Over 12 months in
Gauteng
, quantitative data for the widespread
S. costatus
(Fåhraeus in
Boheman, 1857
) (
costatus
group) recorded 271 individuals in shaded thickets but only seven in grassland (
Davis 1996
). Several, other, poorly-known species of the
tuberculatus
group have only been recorded from type- or other localities within patches of dense, shaded, savanna woodland (
S. carinatus
Frolov & Scholtz, 2003
), renosterveld (
S. diabolus
Roets, 2017
) or forest (
S. frolovi
Roets, 2017
) (
Davis
et al.
2020
). As regards
S. punctatus
, it may be particularly cool-adapted as it was recorded in coastal areas or in deep forested valleys (new records) under cool, rainy conditions.
Conservation status.
For many of the
Sarophorus
species
in
South Africa
, basic information on their distributions, biology, ecology, and natural history is severely lacking. Therefore, from a conservation standpoint, it is important to document such baseline data through further field work. For instance,
S. punctatus
was recently assessed as endangered (EN) (
Davis
et al.
2020
) based on its known occurrence at a single, disturbed forest patch and no further records over a period of 44 years. This assessment may remain valid as the Extent of Occurrence (EOO) is still less than
5000 km
2
at less than five localities. However, addition of further localities might demand a reassessment although this should be tempered by any increased threat to the woody vegetation of the Western and
Eastern Cape
.
Additional
Sarophorus
material used for comparison:
Sarophorus carinatus
Frolov & Scholtz, 2003
.
Holotype
, female (TMSA): “Z.A.49 | Lydenburg D. [district] | Ohrigstad [
24°45’S
30°34’E
]” || “Humus |
III-1962
” || “N. LELEUP leg.” || “
HOLOTYPUS
|
Sarophorus
| carinatus |
A. Frolov
det 2002” || “TM
SOUTH Africa
|
TMSC08181
”.
FIGURES 1–5.
Sarophorus punctatus
Frolov & Scholtz, 2003
(TMSA). 1, male, dorsal view; 2, female, dorsal view; 3, aedeagus, dorsal and lateral views; 4, specimen labels; 5, distribution of
S. punctatus
(yellow circles; circle with black point indicates type locality - “Keurboomstrand”).
Sarophorus frolovi
Roets, 2017
.
Holotype
, male (SANC: SANC-TYPH-02478, aedeagus extracted): “
SOUTH AfRICA
: KwaZulu- | Natal Province, Midlands, | Weza forestry plantations, | –30.61680 29.683626, | 02-2011, F. Roets & J. Pryke” || “100 ml pig dung and | chicken liver mix (8:1 ratio) | left in the field for 2 days” || “
HOLOTYPE
|
Sarophorus frolovi
|
Roets 2017
”.
Sarophorus tuberculatus
(Laporte de Castelnau, 1840)
.
SOUTH AFRICA
:
Eastern Cape Province
:
Algoa Bay
,
Brauns
(
2 specimens
,
TMSA
)
;
Addo Park
,
16-20.xii.1996
,
R
.
Wolmarans
(
2 specimens
,
TMSA
)
.
Western Cape Province
:
Swartberge Hagas Farm
,
33°24’S
22°46’E
,
2.iii.1979
, sandy valley,
S. Endrödy-Younga
(
1 specimen
,
TMSA
)
;
Little Karoo
,
Raubenheimer Dam
,
33°25’S
22°19’E
,
21.x.1993
, donkey dung,
S. Endrödy-Younga
(
2 specimens
,
TMSA
)
;
8 km
W of Ysterfontein
,
33°15’S
18°11’E
,
28.viii.1983
, groundtraps, 70 days,
Endrödy-Younga
and
Penrith
(
1 specimen
,
TMSA
)
;
Ysterfontein
,
14.ix. 1976
,
N.J. Duke
(
5 specimens
,
TMSA
)
.