Comparative Parasitology 67(1) 2000 - Peru State College

52 COMPARATIVE PARASITOLOGY, 67(1), JANUARY 2000
Materials and Methods
No details of hosts, beyond those given below, are
known, and there is no record of host bodies having
been deposited in any museum. All the parasite material
studied had been deposited in the SAMA. Its
preservation history is not known, but probably it was
fixed in 5%—10% formalin before being stored in 70%
ethanol. Specimens were cleared for study in temporary
wet mounts in lactophcnol prior to examination
with the aid of interference contrast light microscopy.
Measurements were made with the aid of an ocular
micrometer or drawing tube and map measurer. Unless
otherwise stated, measurements are given in micrometers
as a range followed by the mean in parentheses.
Drawings were prepared with the aid of a drawing
tube. Terminology used follows that of Beveridge
(1986).
Results
Popovastrongylus wallabiae (Johnston and
Mawson, 1939) Mawson, 1977
(Figs. 1-6)
SYNONYMS: Macropostrongylus wallabiae
Johnson and Mawson, 1939; Gelanostrongylus
wallabiae Popova, 1952.
GENERAL: Cloacinidae: Cloacininae. With
characters of the genus Popovastrongylus as described
by Johnston and Mawson (1939) and
Mawson (1977) and redefined by Beveridge
(1986). Comparative measurements of specimens
from New South Wales and Tasmania are
given in Table 1.
DESCRIPTION OF CEPHALIC END: Mouth opening
quadrangular in apical view, surrounded by
elevated, finely striated labial collar, indented at
corners on external margin by submedian papillae;
amphids on lateral projections external to
labial collar; submedian papillae each with 2
short, medially directed setae; cephalic collar
present posterior to labial collar, bearing papillae
and amphids. Buccal capsule approximately cylindrical,
longer than wide, thickened anteriorly;
internal lining of buccal capsule thick, transparent,
almost occluding lumen anteriorly but not
forming shelf-like projection; outer wall of buccal
capsule sclerotized, refractile, thickened in
mid region, nonstriated; buccal capsule circular
in cross section.
TYPE SPECIMENS: Holotype male, allotype female,
SAMA AHC V2832.
TYPE HOST: Macropus rufogriseus (Desmarest,
1817).
SITE OF INFECTION: Stomach.
LOCALITY: Bathurst District, New South
Wales.
SPECIMENS STUDIED: Types from M. rufogriseus:
Southern Queensland: 3 female, 1 male, no
other collection data, SAMA AHC 6004; from
Tasmania: 3 male, 2 female from Launceston, 18
April 1973, SAMA AHC 6006; 3 male, 1 female
from Pipers River, collector D. Obendorf 26 January
1982, SAMA AHC 16410.
REMARKS: This species was clearly differentiated
from P. pearsoni, the other species of
Popovastrongylus occurring in M. rufogriseus,
by Mawson (1977). Furthermore, Beveridge
(1986, pp. 263-264, Fig. 3A, B), in his redescription
of the cephalic end of P. pearsoni, noted
and figured a shelf-like projection of the inner
lining of the buccal capsule. Mawson (1977) described
a narrow shelf toward the anterior end
of the buccal capsule of the type, but not other
specimens of P. wallabiae. Careful examination
of specimens of P. wallabiae in this study has
shown that a shelf-like projection is not present,
but the inner lining of the buccal capsule is
thickest at the anterior end.
Mawson (1977) listed Macropostrongylus
wallabiae Johnston and Mawson, 1939 p. 526
from Wallabia bicolor Desmarest, 1804, as a
synonym of P. wallabiae. This is in error, as M.
wallabiae was described by Johnston and Mawson
(1939) from Macropus ruficollis (=M. rufogriseus).
The material from Macropus ualabatus
( = W. bicolor), originally described as Macropostrongylus
dissimilis Johnston and Mawson,
1939, was subsequently identified as
Arundelia dissimilis (Johnston and Mawson,
1939) by Mawson (1977). Wallabia bicolor
therefore is not a host for P. wallabiae.
Popovastrongylus tasmaniensis sp. n.
(Figs. 7-21)
Description
Copyright © 2011, The Helminthological Society of Washington
GENERAL DESCRIPTION: Small worms, body
covered with numerous fine transverse striations;
mouth opening oval; surrounded by elevated,
finely striated collar, indented on external margin;
cephalic collar present, posterior to labial
collar, bearing 2 amphids and 4 cephalic papillae,
each with 2 prominent setae. Buccal capsule
cylindrical, oval in cross-section, slightly longer
than wide; walls sclerotized, refractile internal
lining thick, transparent, expanded anteriorly.
Esophageal corpus long, cylindrical; isthmus
short; bulb ovoid; deirids anterior to nerve ring,
excretory pore in mid-esophageal position, pos-