Ahmad, W.

Jairajpuri, M.S.

Horizon / Pleins textes

Two new species  of Dorylaimoidea (Nematoda : Dorylaimida) 
from Goa, India 
Wasim AHMAD and M. Shamim JAIRAJPURI 
Section of Nematology,  Department of Zoology,  Aligarh  Muslim  University,  
Aligarh-202007, India. 
SUMMARY 
Prodorylaimium  goaense n. sp.  has  a  long  and wide odontostyle  and  an  exceptionally long filiform tail; L = 1.6- 
2.0 mm ; a = 44-55 ; b = 4.2-4.9 ; c = 3.1-3.8 ; V = 41-43 ; odontostyle = 25-26 pm ; odontophore = 17-18 pm 
and spicules = 36 pm ; Indodorylaimus  saccatus n. sp. has well developed anterior  uterine  sac ; L = 1.25-1.43 mm ; 
a = 34-39 ; b = 5.6-6.0 ; c = 5.5-6.0 ; V = 33-36 ; odontostyle = 15-17 pm ; odontophore = 21-22 pm ; spicules = 
31-36 pm. 
RÉSUMÉ 
Deux  nouvelles  espèces  de  Dorylaimoidea  (Nematoda : Dorylaimida)  
provenant  de  Goa,  Inde 
Prodorylaimium goaense n.  sp. possède un  stylet long e t  épais ainsi qu'une queue exceptionnellement longue ; 
L = 1,6-2,0 mm ; a = 44-55 ; b = 4,2-4,9 ; c = 3,l-3,s ; V = 41-43 ; odontostyle = 25-26 pm ; odontophore = 17- 
18 pm et spicules = 35 pm. Indodorylaimus  saccatus n.  sp. possède un  sac  utérin  antérieur bien développé ; L = 
1,25-1,43 mm ; a = 34-39 ; b = 5,6-6,0 ; c = 5,5-6,0 ; V = 33-36 ; odontostyle ;= 15-17 pm ; odontophore = 21- 
22 pm ; spicules = 31-36 pm. 
Soi1 samples from around coconut, Cocos rzucifera 
L. collected  from  Goa,  India,  yielded  two  new  species 
of the  superfamily  Dorylaimoidea  Thorne,  1934, 
one  belonging to  the  genus Prodory la imium Andrassy, 
1969 of the family Prodorylaimidae Andrassy, 1969 
and the other of the genus Indodorylaimus Ali & 
Prabha,  1974 of the  family  Thornenematidae  Siddiqi, 
1969. 
Prodorylaimium  goaense n. sp. 
(Fig. 1) 
DIMENSIONS 
Female  (n = 1 ; paratype) : L = 2.0 mm ; a = 55 ; 
6 ; odontostyle = 25 pm ; odontophore = 18 pm ; 
oesophagus = 409 Fm ; prerectum = 63 pm ; rec- 
tum = 39 pm ; tail = 630 pm ; ABD = 24 pm. 
M a l e  ( n  = 1 ; paratype) : L = 1.68 mm ; a = 39 ; 
b = 4.4 ; c = 3.2 ; c' = 18 ; T = 33 ; odontostyle = 
26 pm ; odontophore = 17 pm ; oesophagus = 
382 Fm ; spicule = 35 Fm ; ventromedian supple- 
b = 4.9.; c = 3.1 ; C' = 26 ; V = 41 ; G, = 6 ; G, = 
Revue  Ndmatol .  7 (4) : 393-397 (1984) 
ments = 8 ; prerectum = 57 pm ; tail = 515 pm ; 
ABD = 28  pm. 
Holotype (female) : L = 1.65 mm ; a = 44 ; b = 
odontost!yle = 25 pm ; odontophore = 18 pm ; oeso- 
phagus = 386 pm ; prerectum = 46 pm ; rectum = 
39 pm ; tail = 434  pm ; ABD = 21 pm. 
DESCRIPTION 
4.2; ~ = 3 . 8 ;  ~ ' = 1 8 ;  V = 4 3 ;  G , = 7 ;  G , = 6 ;  
Female : Body  ventrally  curved  upon  fixation, 
tapering  slightly  anterior to  base of oesophagus, 
posteriorly  ending  into  a very  long filiform tail. 
Cuticle finely striated.  Lateral  hypodermal  chords 
about  one  fourth of body  width  at  mid-body.  Lateral, 
dorsal  and  ventral  body  pores  indistinct.  Lip  region 
narrower  than  adjoining  body,  demarcated  by  a 
slight depression, 11-12 [Am or less than one-third 
of body  width  wide.  Lips  amalgamated,  anterior 
sensilla not protruding above lip contour. Amphid 
cup-shaped,  aperture 6-9 pm  wide. Odontostyle 
2.2-2.3 lip  region widt,hs long,  its  aperture  about 
one-third of its length. Guiding ring single, a t  15- 
16 Fm or 1.4-1.5 lip  region  widths  from  anterior  end. 
Odontophore rod-like 0.6-0.7 of odontostyle length. 
393 
W. Ahmad  h M.S. Jairajpuri  
Fig. 1. Prodoryluirnium  gouense n. sp. A : Entire female ; B : Entire male ; C : Anterior end ; D : Oesopha- 
geal region ; E : Female  reproductive  system ; F : Female  posterior region ; G : Male posterior region. 
394 Revue Nimutol. 7 (4) : 393-397 (1984) 
Two new  species of Dorylaimoidea  from  Goa, India 
Nerve  ring a t  122-130 pm  from  anterior  end of body. 
Basal  expanded  portion of oesophagus  occupying 
42-45% of total oesophageal  length.  Cardia  elongate- 
co.noid, 28-29 pm long.  Oesophageal gland  nuclei 
and their orifices located as follows : DO = 57-59; 
79-80 ; S,N = 88-89 ; Sa0 = 89-90. Reproductive 
system  amphidelphic,  vulva  longitudinal,  vagina 
about half of corresponding body width long. Ovi- 
duct-uterus demarcated, poorly developed sphincter 
present. No sperm in reproductive tract. Prerectum 
2.1-2.6 anal body widths long. Rectum 1.4-1.6 anal 
body  widths  long.  Tail  very  long, filiform,  18-26 anal 
body widths long with two caudal pores on each 
side. 
DN = 61-63 ; DO-DN = 3-4 ; SIN, = 75-76 ; SIN, = 
M a l e  : Testes  two,  opposed,  sperm  not  developed. 
Supplements  an  adanal  pair  and  eight closely spaced 
ventro-medians,  the  latter  beginning well above 
'range of spicules.  Spicules 1.2 anal  body  widths 
long. Prerectum about two anal body widths long, 
terminating  within  range of supplements.  Tail 
exceptionally  long,  filiform,  18  anal  body  widths 
long.  Caudal  pores  indistinct. 
TYPE HABITAT AND LOCALITY 
Soi1 around roots of coconut from near Mayeem 
lake, Becholim, Goa. 
TYPE SPECINENS 
Collected in April 1982 ; holotype female on slide 
Prodorylaimium goaense n. sp./l ; paratype male on. 
slide Prodorylaimium goaense n. sp.12 deposited in 
the  nematode collection of Zoology Department, 
Aligarh Muslinl University,  Aligarh ; paratype 
female  on  slide Prodorylaimium  goaense n. sp./3 
deposited a t  Rothamsted  Experimental  Station, 
Harpenden,  Herts, U.K. 
DIFFERENTIAL DIAGNOSIS 
Prodorylaimium  goaense n.  sp.  is  characterized 
by  having  a long  and  wide  odontostyle  and  an 
exceptionally  long filiform tail.  The  new species 
differs from P. stenosoma (de Man, 1876) Andrassy, 
1972 in  having  a longer  odontostyle,  oesophagus 
and  tail  and  in  the  number  and  position of ventro- 
median supplements (odontostyle 20 pm ; b = 5.2- 
6.3 ; c = 4.7-6.5 ; ventro-median supplements 6-7 
and the first pair is located just above the spicule 
in  P. stenosoma).  From P. brigdammense (de Man, 
1876)  Andrassy, 1969, i t  differs in  having  a  long  and 
wide  odontostyle,  slightly  posterior  vulva  and  longer 
tail  (odontostyle 13-14 pm ; V = 38-41 ; c = 4.5-4.8 
in P. brigdammense).  
Revue   Nèmatol .  7 ( 4 )  : 393-397 (1984) 
Indodorylaimus  saccatus n.  sp. 
(Fig.  2) 
DIMENSIONS 
Females (n = 5 ; paratypes) : L = 1.25-1.34 mm ; 
a = 34-39 ; b = 5.6-6.0 ; c = 5.5-5.8 ; c' = 10-11 ; 
V = 34-36 ; Gl = 6-12 ; G2 = 14-17 ; odontostyle = 
15-17 pm ; odontophore = 21-22 pm ; oesophagus = 
209-234 pm ; prerectum = 42-56 pm ; rectum = 
24-31 pm ; tail = 224-241 pm ; ABD = 21-22 pm. 
M a l e s  (n  = 5 ; paratypes) : L =.1.33-1.38 mm ; 
a = 37-38 ; b = 5.4-6.2 ; c = 5.7-6.2 ; c' = 9-10 ; 
T = 48-53 ; odontostyle = 16-17 pm ; odontophore= 
21-22 pm ; oesophagus = 213-253 pm ; spicules = 
31-36 km ; ventro-median  supplements = 4 ; lateral 
guiding pieces = 5-7 pm ; prerectum = 80-84 pm ; 
tail = 220-238 pm ; ABD = 23-25  pm. 
Holofype   (Female)  : L = 1.43 mm ; a = 38 ; b = 
5 . 8 ; ~ = 6 . O ; ~ ' = l O ; V = 3 3 ; G ~ = 9 ; G , = 2 0 ;  
odontostyle = 17 pm ; odontophore = 21 pm ; oeso- 
phagus = 244 pm ; prerectum = 56  pm ; rectum = 
25 pm ; tail = 238 pm ; ABD = 24 pm. 
DESCRIPTION 
Female : Body  almost  straight  upon  fixation, 
tapering  slightly  anterior  to  base of oesophagus, and 
posteriorly ending into a filiform tail. Cuticle finely 
striated, lateral hypodermal chords about one third 
of body  width a t  mid-body. Lateral,  dorsal  and 
ventral  body pores indistinct.  Lip  region  slightly 
narrower  than  adjoining  body,  demarcated  by  a 
slight  depression,  cheilostome  moderately  sclerotized, 
lips amalgamated, anterior sensilla not protruding 
above lip contour. Amphid funnel-shaped, aperture 
6-9 pm wide, odontostyle 1.4-1.7 lip region widths 
long,  its  aperture  about  one-third of its  length. 
Guiding ring aingle, a t  9-10 pm or about one lip 
region width from anterior end, odontophore rod- 
like, 1.2-1.3 of odontostyle  length.  Nerve  ring a t  
91-106 pm from  anterior  end of body.  Expanded 
portion of oesophagus occupying 37-41 % of total 
oesophageal  length.  Cardia  conoid, 11-13 pm long. 
Oesophageal gland nuclei and their orifices located 
as follows : DO = 61-63 : DN = 62-64 ; DO-DN = 
S,O = 90-91. Reproductive  system  mono-opistho- 
delphic,  vulva  transverse,  vagina less than half 
corresponding  body  width  long.  Anterior  genitai 
branch  a  sac, 74-165 [Lm long ; posterior  branch  with 
usual  structures.  Sperm  present  in both  genital 
branches. Prerectum 1.9-2.5 anal body widths long. 
Rectum 1.1-1.5 anal  body  widths  long.  Tail  ong 
filiform,  9-11  anal  body  widths  long  with  'two or 
three  caudal  pores  on  each side. 
1.8-2.6 ; SINI = 74-75 ; SIN, = 78-80 ; S2N = 88-90 ; 
395 
W .  Ahmad  dl- M.S. Jairajpuri  
Fig. 2 .  lndodorylaimus  saccatus n. sp. A : Entire lemale ; B : Entire male ; C : Anterior  end ; D : Anterior 
end showing amphid ; E : Expanded part  of oesophagous ; P : Fcmale reproduckivc systcm ; G : Fcmalc 
posterior  region ; H :, Male posterior  region. 
396 R e w e  NCmalol. 7 ( 4 )  : 393-397 (1984) 
Two new  species of Dorylaimoidea  from Goa, Ind ia  
M a l e  : Testes  two,  opposed,  sperm  fully developed. 
Supplements an adanal pair and four well spaced 
ventro-medians.  First  pair  situated  slightly  above 
range of spicules. Spicules 1.2-1.5 anal body-widths 
long, lateral guiding pieces rod-like, about one fifth 
of spicule  length.  Prerectum 3.3-3.6 anal  body-widths 
long. Tai1 long filiform, 9-10 anal body-widths long 
with  three or four  caudal  pores  on  each  side. 
TYPE HABITAT AND LOCALITY 
Soi1 around roots of coconut from near Mayeem 
lalce, Becholim, Goa. 
Type   spec imetu  
Collected in April 1982 ; holotype female and a 
paratype  male  on  slide Indodorylaimus saccatus 
n. sp. / 1 ; paratype  females  and  males  on 
slides Indodorylaimus saccutus n. SP. 2-6 
deposited  in  the  nematode  collection of Zoology 
Department,  Aligarh  Muslim  University,  Aligarh.  A 
paratype  female  and  a  male  deposited  al  Rothamsted 
Experimental Station, Harpenden, Herts, U.K. 
DIFFERENTIAL DIAGNOSIS 
Indodorylaimus  accatus n.  sp. differs from the 
other  two  known speciee of Indodorylaimus in  having 
a  very  long  anterior  uterine  sac.  In  addition,  it 
differs from I .  wickeni  apud Ali & Prabha, 1974 in 
having  longer  narrower  body,  longer  odontostyle  and 
odontophore,  shorter  spicules,  in  the  presence of 
lateral  guiding pieces and  in  the  position of the first 
ventro-median  supplement (L = 6.96-1.22 mm ; 
a = 23-31 ; odontostyle = 12-13 pm ; odontophore = 
16-29 km ; spicules = 37-39 pm lateral  guiding pieces 
Accepter pour  publication le 21 mars 1984. 
absent and first pair of ventro-median supplements 
within the range of spicules in I .  wickeni).  From 
I .  kanhobia Thonlber et al., 1980 it differs in  having 
smaller body and odontostyle, and in the presence 
of lateral guiding pieces and ventro-median supple- 
ments (L = 1.47-1.79 mm ; odontostyle = 18-20 pm ; 
lateral  guiding pieces and  ventro-median  supplements 
absent  in 1. kanhobia) .  
ACKNOWLEDGEMENTS 
The,'  authors  are  thanlrful  to Professor Nawab 
II. Khan,  Chairman,  Department of Zoology for 
providing  laboratory  facilities  and  to Professor Ather 
H. Siddiqi for his suggestions. The first author  thanks 
C .  S. 1. R., New Delhi for the financial assistance. 
REFERENCES 
ALI, S. M. & PRABNA, M. J. (1974). Studies on the 
genera Sicaguttur Siddiqi, 1970 and Indodorylaimus 
n. gen. (Nematoda : Dorylaimoidea). Nematologica, 
ANDRLSSY, 1. (1969). Taxonomische ubersicht  der 
Familien  Prodorylaimidae n. €am.  und Dorylaim'idae 
de Man, 1876. Opusc. zool. Bpest., 9 : 187-233. 
ANDRLSSY, 1. (1978).  Fresh-water  nematodes  from  the 
Himalayas  (Nepal). Opusc. zool. Bpest,  15 : 3-21. 
BAQRI, Q. H. & JANA, A. (1980). Nematodes from West 
Bengal (India) V. Review of the  family  Thorne- 
nematidae  Siddiqi, 1969 (Dorylaimoidea : Nema- 
toda). Nematologica, 26 : 83-107. 
On a new species of the genus Indodorylaimus Ali 
& Prabha, 1974 from Solanum melongena (Nema- 
toda : Dorylaimoidea). Curr. Sci., 49 : 566-567. 
19 (1973) 481-490. 
'rIIOMBER, B. S., JOSHI, S. A. & FAROOQI, M. N. (1980). 
Revue   Nhna to l .  7 (4) : 393-392 f1984) 39 7 


Two new species of Dorylaimoidea (Nematoda : Dorylaimida) from Goa, India

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