An annotated checklist of the South African Acanthodrilidae (Oligochaeta: Acanthodrilidae: Acanthodrilinae, Benhamiinae)
Author
Plisko, Jadwiga Danuta
text
Zootaxa
2012
3458
4
58
journal article
10.5281/zenodo.282224
3c9db890-c1df-4340-8be1-8e5cd631aeed
1175-5326
282224
Chilota purcelli
(
Beddard, 1897
)
Acanthodrilus purcelli
Beddard, 1897
: 337
.
Acanthodrilus purcelli
:
Reynolds & Cook 1976
: 160
; BMNH; ZMH.
Chilota priesti
Michaelsen 1913a
: 517
.
Chilota priesti
f.
typicus
Michaelsen, 1913b
: 54
.
Chilota priesti
f.
minor
Michaelsen, 1913a
: 518
.
Chilota priesti
f.
minor
Michaelsen, 1913b
: 55
.
Chilota purcelli
:
Michaelsen 1900
: 147
,
Michaelsen 1913a
: 521
, 1913b: 55;
Reynolds & Cook 1976
: 160
;
Pickford 1937
: 453
–475;
Sciacchitano 1960
: 10
; BMNH.
Type
locality
.
WC
, Cape Peninsula: ‘under rotten log in the woods on the Newlands slope…’ In the sample were ‘ten specimens but only one of these ten was sexually mature; this individual was the largest of the series’ (
Beddard 1897
).
Distribution
.
Chilota purcelli
Beddard, 1897
with its five subspecies (see below) is the most common megadrile in the Cape Peninsula and its neighbourhood. It is recorded also from distant localities in the coastal-belt area bordering Western and Eastern Cape provinces.
Remarks
. One adult specimen BMNH 1904.10.5.888 labelled as ‘type’ is probably the
holotype
, although the inserted label is disintegrating, and it is difficult to establish the collection locality. BMNH 1904.10.5.905–907 with three immature specimens collected at ‘Cape of Good Hope’, labelled
Acanthodrilus purcelli
,
redetermined by Pickford as
Chilota purcelli
, is probably also from Beddard’s
type
series material. Reynolds & Cook's (1976) indication of ‘ZMUH 7832’ being the
type
material of
Chilota purcelli
is confirmed here. The presently found ZMH V-7832 specimen of
Acanthodrilus purcelli
Beddard, 1897
, collected at ‘Südwestliches Kapland, Table Mtn’, is the specimen of the
type
series identified originally by Beddard.
Pickford (1937)
studied Beddard’s material kept at the BMNH and further samples, altogether more than one hundred, collected in the Western Cape and the southeastern part of the Eastern Cape, at various time, from various biotopes, by numerous collectors. The comprehensive results were monographed (
Pickford 1937
) in detailed descriptions of the species' external and internal characters (
ibid.
p. 453–475), the ‘geographical distribution and sub-speciation in
Chilota purcelli
’, the ‘key to the sub-species of
Chilota purcelli
’, including also differentiations of traits (p. 476–477). Pages 477–500 (
Pickford 1937
) contain extensive descriptions of the five subspecies, recognizing also ‘series’, ‘forms’, ‘variations’, and ‘transitions’. This exhaustive study based on remarkably large material is followed by a detailed revision of
Chilota montanus
Michaelsen, 1905
(put already in synonymy with
Ch
. purcelli
Beddard, 1897
by
Michaelsen (1913a)
,
Chilota priesti
Michaelsen 1913a
and its forms
typica
and
minor
.
As
a result, Pickford recognizes five subspecies:
Ch
. purcelli purcelli
Beddard, 1897
,
Ch
. purcelli longinquus
Pickford, 1937
,
Ch
. purcelli spinosus
Pickford, 1937
,
Ch
.
purcelli montanus
Michaelsen, 1905
, and
Ch
. purcelli priesti
Michaelsen, 1913
.