A N N A L E S H I S T O R I C O - N A T U R A L E S M U S E I N A T I O N A L I S H U N G A R I C I

T o m u s (37. B u d a p e s t 1 9 7 5 .

Hymenolepis meszarosi sp. n. (Cestoidea), a Parasite of Alt icola roylei (Bodentia) in Mongolia

by É . M U R A I , Budapest & F. T E N O R A , Brno

Abs t r ac t — Hymenolepis meszarosi s p . n . ( H y m e n o l e p i d i d a e ) i s d e s c r i b e d f r o m Alticola roylei c a p t u r e d i n M o n g o l i a . W i t h 6 f i g u r e s .

T h e p r e s e n t p a p e r i s b a s e d o n a s p e c i m e n o f c e s t o d e r e c o v e r e d a t a n a u t o p s y o f 7 r o d e n t s r e p r e s e n t i n g A. roylei. T h e r o d e n t s w e r e d i s s e c t e d b y D R . F . MÉSZÁROS , h e k n i n t h o -l o g i s t o f t h e D e p a r t m e n t o f Z o o l o g y , H u n g a r i a n N a t u r a l H i s t o r y M u s e u m , B u d a p e s t , d u r i n g h i s s t a y i n M o n g o l i a . T h e n e w s p e c i e s i s d e d i c a t e d t o t h e c o l l e c t o r . A d e t a i l e d d e s c r i p t i o n , f i g u r e s , s y s t e m a t i c a l a n d t a x o n o m i c a l p o s i t i o n o f t h e s p e c i e s a r e g i v e n .

Hymenolepis meszarosi sp. n. (Figs. 1 — 6)

Description of holotype: Body length 20 mm, maximum width 0.250 mm. Scolex 0.128x0.100 mm in diameter, wi th 4 suckers and a rostellum armed with a crown of hooks. Suckers 0.050 mm in diameter. Hooks of almost fraternal type, 24 in number, 0.012-0.014 mm long. Rostellar sac 0.044x0.034 mm. Male genital organs consisting of 3 testes forming a triangle. One testis poral, the remain­ing two aporal, all three spherical, 0.060 mm in diameter. Bursa cirri very small, 0.039 mm long and only 0.008 mm wide, in poral part of proglottides behind excre­tory canals. I n fully mature proglottides, bursa cirri measuring 0.037 x 0.013 mm. Receptaculum seminis in hermaphrodite proglottides very distinct, elongated,

F i g s . 1—6. Hymenolepis meszarosi s p . n . : 1 = s c o l e x , 2 = h o o k s f r o m t h e s c o l e x i n v a r i o u s p o s i t i o n , 3—4 = h e r m a p h r o d i t e p r o g l o t t i d e s , 5 = m a t u r e p r o g l o t t i s , 6 = e g g

Ann. Hist.-nat. Mus. Nat. Hung., 67, 1975

0.060-0.075x0.015-0.016 mm. Ovary between testes and vitelline gland. Ex­cretory canals, 0.010 mm wide, decurrent on both sides of proglottides. Uterus developing in upper part of proglottides, later occupying entire proglottis. Mature proglottides wi th eggs 0.600x0.125 mm. Eggs 0.052-0.059x0.038-0.044 mm, oncosphere 0.022-0.025x0.020-0.022 mm. Hooks of oncosphere 0.012-0.013 mm long.

Host: Alticola roylei semicanus G . A L L E N , 1924.

L o c a l i t y : B a r u n U r t , I \ l o n g o h a , 1 1 2 ° 3 7 ' E a s t , 4 7 ° 1 8 ' N o r t h , 1 2 4 0 m a b o v e sea l e v e l , 1 1 . 8. 1 9 7 2 . l e g . F . MÉSZÁROS

L o c a t i o n i n h o s t : s m a l l i n t e s t i n e . T h e s i n g l e d e s c r i b e d s p e c i m e n i s t h e h o l o t y p e , d e p o s i t e d i n t h e Z o o l o g i c a l D e p a r t ­

m e n t o f t h e H u n g a r i a n N a t u r a l H i s t o r y M u s e u m , B u d a p e s t , C o l l . N o . M . 4 2 / 1 — 1 9 7 2 .

D i f f e r e n t i a l d i a g n o s i s : The cestodes of the genus Hymenolepis possessing hooks on their scoleces and parasitizing rodents, have often been discussed in the literature (for a survey, see B A E R & T E N O R A 1970). Recent papers also carry descriptions of new cestode species of this genus recovered from rodents ( T O K O B A Y E V 1966, G R E E N B E R G 1969). I f all known Hymenolepis species parasitiz­ing rodents {H. muris sylvatici ( R U D O L P H I , 1819) and H. myoxi ( R U D . , 1819) - see J O Y E U X & B A E R 1936, T E N O R A 1965) and the literature data of all above-cited authors are taken into consideration, the species H. meszarosi wi l l be found to closey resemble Hymenolepis fraterna ( S T I L E S , 1906).

H. meszarosi differs from H. fraterna in the following characters: 1. the hooks are shorter in the average: 0.014-0.021 mm (H. f . ) : 0.012-0.014 mm (H. m.); 2. the hooks are of a different type: typical fraternal (H . f . ) : similar to fraternal (H. m.) ; 3. the size of hooks of the oncosphere in comparison with those of the scol­ex: the hooks of the oncosphere are always shorter than those on the scolex (H. f.) : the hooks of the oncosphere are of almost the same size as those on the scolex (H. m.).

As to other data available in literature, the following findings of cestodes of the family Hymenolepididae have been reported from rodents in the neighbouring countries: Hymenolepis sinensis OLDHAM, 1929, was found in China in Cricetulus griseus, and in the Tuva ASSR in Cricetulus barabensis (SULIMOV, 1963 in S C H A L D Y -BLN 1965). M A T S C H U L S K Y (1958) reported Dicranotaenia sp. from Cricetulus furun-culus from the Buryat ASSR. The species H. sinensis differs in principle from H. meszarosi in the type of hooks, length of hooks and host species ( B A E R & T E N O R A 1970). As regards Dicranotaenia sp. M A T S C H U L S K Y , 1958, neither a description nor figures were given.

I t should be stressed that this is the first finding of a cestode of the genus Hymenolepis in Alticola roylei in Mongolia.

References

B A E R , J . G . & T E N O R A , F . ( 1 9 7 0 ) : S o m e s p e c i e s o f H y m e n o l e p i s ( C e s t o i d e a ) f r o m R o d e n t s a n d f r o m P r i m a t e s . — Acta Sei. Nat. Brno, 4: 1 — 3 2 .

G R E E N B E R G , Z . ( 1 9 6 9 ) : H e l m i n t h s o f M a m m a l s a n d B i r d s o f I s r a e l . H e l m i n t h s o f A c o m y s s p p . ( R o d e n t i a , M u r i n a e ) . — I s r a e l Journ. Zool., 1 8 : 2 5 — 3 8 .

J O Y E U X , C H . & B A E R , J . G . ( 1 9 3 6 ) : F a u n e d e F r a n c e . 3 0 . C e s t o d e s . —• P a r i s , p p . 6 1 3 . M A H Y J i b C K H f î , c. H . ( 1 9 5 8 ) r e J i b M H H T O ^ a y H a r p b i 3 y p , 0 B B y p H T C K O í í A C C P . — Pa6. no zejihM.

n 80-jiemyjo anad. Cnpnouna, Häd. AH. CCCP, n . 2 1 9 — 2 2 4 . I l l A J i í i b i B H H , JL c . ( 1 9 6 5 ) : r e J i í > m h h t o < í ) a y H a r p H 3 y H 0 B n 3aHu;eo6pa3Hb-ix <|>ayHbi C o B e T C K o r o

coK)3a . — Te3HC, M o c K B a .

T E N O R A , F . ( 1 9 6 5 ) : S u p p l e m e n t a r y n o t e s o n H y m e n o l e p i d i d t a p e w o r m s p a r a s i t i z i n g G l i r i d D o r m i c e i n S o u t h S l o v a k i a n L i m e s t o n e A r e a ( C z e c h o s l o v a k i a ) . — Ő s . Parasit., 12: 2 9 9 — 3 0 3 .

T O K O B A E B , M. M. ( 1 9 6 6 ) : H o B b i e BHAM r e J ibMHi iTOB AJIH <J)ayHbi rpb i - syHOB K i i p r t i 3 H i i . — rejibM. cHcue. Kupz. luonp. mep. 1Í3Ö. ,,HJIUM" n . 3 — 1 5 .

Author's address: Dr. É V A M U R A I

Zoological Department Hungarian Natural History Museum 1088 Budapest, Baross utca 13. Hungary

Dr. F R A N T I S E K T E N O R A

Zoological Department university of Agriculture Brno, Zemedelská 1. Czechoslovakia