One hundred forty-five cliff swallows, Petrochelidon pyrrhonota, were examined for cestodes in two separate surveys in Weld County, Colorado. Seven species representing four genera were found. Angularella audubonensis sp. n. is differentiated by the small size of the rostellar hooks (8.4-13.5 µm) and the medial relationship of the cirrus pouch t.o the osmoregulatory canals. Other species collected were Angularella beema, Anonchotaema globata, Mayhewia ababili, Vitta magniuncinata, Vitta parvirostris and Vitta riparia. Seven new hosts and geographic distribution records were established for Colorado, and six new records were determined for North America

Stamper, Jeffery D.

Schmidt, Gerald D.

English

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Faculty Publications from the Harold W. Manter 
Laboratory of Parasitology Parasitology, Harold W. Manter Laboratory of 
1984 
Angularella audubonensis sp. n. (Dilepididae) and Other Cestodes 
of Cliff Swallows in Colorado 
Jeffery D. Stamper 
University of Northern Colorado 
Gerald D. Schmidt 
University of Northern Colorado 
Follow this and additional works at: https://digitalcommons.unl.edu/parasitologyfacpubs 
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Stamper, Jeffery D. and Schmidt, Gerald D., "Angularella audubonensis sp. n. (Dilepididae) and Other 
Cestodes of Cliff Swallows in Colorado" (1984). Faculty Publications from the Harold W. Manter 
Laboratory of Parasitology. 670. 
https://digitalcommons.unl.edu/parasitologyfacpubs/670 
This Article is brought to you for free and open access by the Parasitology, Harold W. Manter Laboratory of at 
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Nebraska - Lincoln. 
Proc. Helminthol. Soc. Wash. 
51(1),1984, pp. 106-108 
Angularella audubonensis sp. n. (Dilepididae) and 
Other Cestodes of Cliff Swallows in Colorado 
JEFFREY D. STAMPER AND GERALD D. SCHMIDT 
Department of Biological Sciences, University of Northern Colorado, Greeley, Colorado 80639 
ABSTRACT: One hundred forty-five cliff swallows, Petrochelidon pyrrhonota, were examined for cestodes in!l<Q 
separate surveys in Weld County, Colorado. Seven species representing four genera were found. Angu/arella 
audubonensis sp. n. is differentiated by the small size of the rostellar hooks (8.4-13.5 /Lm ) and the medial 
relationship of the cirrus pouch t.o the osmoregulatory canals. Other species collected were Angularella beeTllil, 
Anonchotaema globata, Mayhewza ababzlz, Vzlla magmuncznata, Vltta parvzrostns and Vltta rzparia. Seven IIeYt 
hosts and geographic distribution records were established for Colorado, and six new records were determined ' 
for North America. 
Only one paper (Kay ton and Schmidt, 1975) 
has been published on helminths of the cliffswal-
low, Petrochelidon pyrrhonota. That study, how-
ever, omitted cestodes. In order to determine a 
more complete picture of parasitism of this bird 
in Colorado, we examined 145 swallows for ces-
todes and report the results herein. 
Materials and Methods 
Cestodes were relaxed in tap water, fixed in AFA or 
10% formalin, and stained with acetocarmine. 
Illustrations were completed with the aid ofa camera 
lucida. All measurements are in micrometers unless 
otherwise indicated. 
Seven species of cestodes were identified: Angular-
ella audubonensis sp. n., Angularella beema (Clerc, 
1906) Strand, 1928; Anonchotaenia globata Linstow, 
1879; Mayhewia ababili (Singh, 1952) Yamaguti, 1956; 
Villa magniuncinata Burt, 1938; Villa parvirostris 
(Krabbe, 1869) Baer, 1959; and Villa riparia (Dubi-
nina, 1953) Spasskaya, 1966. All were new host records 
for the cliff swallow, and Colorado, and all except A. 
globata are new for North America. One species of 
Angularella Strand, 1928 is new to science and forms 
the basis of the following description. 
Anguiarella audubonensis sp. n. 
(Figs. 1-5) 
Five complete specimens and several frag-
ments were recovered from the small intestines 
of seven of 145 cliff swallows collected from May-
August 1978, 1979, 1980. 
DESCRIPTION: Dilepididae, Dilepidinae. Length 
of strobila about 44 mm long, 196 wide at base 
of scolex and reaching a maximum width of about 
1,800 (N = 5) in the posterior gravid proglottids. 
Proglottids craspedote, wider than long. Scolex 
(Fig. 1) 186-210 (N = 5) at level of suckers. Four 
muscular, aspinose suckers measure 76-102 long 
by 72-115 wide (N = 14); circular to oval in 
shape. Rostellum (Fig. 2) 39-41 wide at apex, 
93-110 long (N= 5), armed with 52-56 hOOk! 
(N = 2) arranged in zigzag formation in a single 
row. Hooks (Fig. 3) 8.4-13.5 (N = 60) long with 
the longer hooks at the posterior position of the 
zigzag and shorter hooks at the anterior position. 
Undifferentiated neck region measuring 50-104 
(N = 5) from base of rostellar pouch to first seg. 
mentation (Fig. 4). Genital pores alternate irreg. 
ularly, in anterior third of proglottid. Cirrus pouch 
(Fig. 5) muscular, double-walled, 165-200 long, 
40 (N = 65) maximum width. Cirrus pouch passes 
between osmoregulatory canals at approximately 
its midpoint. Cirrus armed with minute spinules 
less than 1 in length. Vas deferens highly con· 
voluted, extending to midline of anterior thUd 
of proglottid. Testes number from 26-47; ovoid, 
37-40 wide by 60-70 (N = 170) long and are 
interspersed throughout proglottid, rarely ante-
rior to ovary or vagina. Vagina posterior to cirrus 
pouch and vas deferens, 100-116 (N= 70) long, 
about 5 wide, curving slightly posteriad between 
dorsal and ventral osmoregulatory canals. Vir 
gina expands into prominent, oblong seminalrt-
ceptacle 210-211 long, 79-86 (N = 70) wide. 
Seminal receptacle slightly poral and medial, .. 
terior to vitellarium. Ovary bilobed, often 0c-
cupying most of mature proglottid, sometimeS 
with fingerlike projections extending past the. 
moregulatory canals. Vitellarium lobated,27t· 
313 wide, 116-121 (N= 70) long, posterior" 
seminal receptacle between lobes of ovary. ~. 
us sac-like, developing quickly, occupyingeIJIIIC 
proglottid when gravid. Eggs 23-31 long by 1. 
23 (N = 70) wide." 
HOST: Petrochelidon pyrrhonota (Veillot, 1~~ 
(Passeriformes: Hirundinidae). . 
106 
LOCALITY: Weld County, Colorado. 
HABITAT: Duodenum. 
2 
E 
E 
C\I 
cj 
3 
~ ~ 
a b l~ 
E 
E 
~. 
o 
107 
E 
E 
Lf) 
0 
0 
E 
E 
o 
~ 
R Figures 1-5. Angularella audubonensis sp. n. from Petrochelidon pyrrhonota. 1. Scolex, dorsoventral view. 2. 
~tellum with hooks. 3. Hooks. a-small hook; b-large hook. 4. Mature proglottid. Large oval structures are 
es. 5. Close-up of cirrus pouch and vagina from mature proglottid. 
108 
Table 1. Characteristics of Angularella spp. (data after original authors). 
A. hirundina 
A. beema (Fuhrmann, 1907) 
Charac- (Clerc, 1906) Spasskaya and 
teristic Strand, 1928 Spasskii, 1971 
Number of 56-66 56 
hooks 
Length of 22-29 19-20 
hooks 
Number of 20-42 28 
testes 
Cirrus pouch 133-175 x 39 117-140 x 28 
Uterus Sac-like, Lobated 
lobated 
TYPE SPECIMENS: USNM Helm. ColI. holotype 
no. 77136, paratype no. 77137. 
ETYMOLOGY: The species is named in honor 
of the Greeley, Colorado Audubon Society, who 
encouraged and helped fund this research. 
REMARKS: Angularella audubonensis differs 
from four species, A. beema (Clerc, 1906) Strand, 
1928; A. hirundina (Fuhrmann, 1907) Spasskaya 
and Spasskii, 1971; A. urbica Spasskaya and 
Spasskii, 1971; and A. ripariae Yamaguti, 1940, 
by the size of its rostellar hooks, those being 
much smaller (8.4-13.5 !lm) than any reported 
from the other species (Table 1). The cirrus pouch 
--. 
A. urbica A. ripariae 
Spasskaya and Yamaguti, A. audubonertJis 
Spasskii, 1971 1940 sp. n. 
48 40 -52-56 
18-23 27 8.4-13.5 
45 32-45 26-47 
247 x 33 75-90 x 33-63 165-200 x 40 
Lobated margins Sac-like, Sac-like, 
filling entire filling entire 
segment segment 
passes between the dorsal and ventral osmoreg_ 
ulatory canals and extends medially past them 
whereas those of all the other species are com: 
pletely poral to the canals. Angularella audubo-
nensis most closely resembles Angularella beema 
in the number and arrangement of hooks, num-
ber of testes, and the highly convoluted nature 
of the vas deferens. 
Literature Cited 
Kay ton, R. J., and G. D. Schmidt. 1975. Helminth 
parasites of the cliff swallow, Petrochelidon pyr. 
rhonota Veillot, 1817 in Colorado, with two new 
species. J. Helminthol. 49: 115-119. 


\u3ci\u3eAngularella audubonensis\u3c/i\u3e sp. n. (Dilepididae) and Other Cestodes of Cliff Swallows in Colorado

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\u3ci\u3eAngularella audubonensis\u3c/i\u3e sp. n. (Dilepididae) and Other Cestodes of Cliff Swallows in Colorado

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