Xiphinema costaricense
Lamberti & Tarjan, 1974
Photo Gallery- Costa Rica

MEASUREMENTS
(all measurements in um except L in mm).
 

Locality
Guyane 13 
Guyane 17 
 
 
Female
Female
J4

n
2
8
1
2.6, 2.8
2.4+ 0.1
(2.2 - 2.8) 
2.1
a
53.6, 53.1 
48.3 + 3.5
(41.3 - 52.6) 
45
b
4.8, 6 
5.3 + 0.6
(4.6 - 6.3) 
2.7
c
81.1, 88.3 
77.9 + 8.8
(63.2 - 88.7) 
58.6
c'
0.7, 0.6 
0.7 + 0.1
(0.6 - 0.8) 
0.74
V
47, 46 
45.1 + 0.9
(44 - 46.4) 
-
Tail
31.5, 31.5 
31 + 3.8
(27 - 37) 
35
Lip region diam. 
18, 18.5 
15.5 + 1.1
(14 - 17) 
15
Odontostyle
151, 147 
144.6 + 5.4
(140 - 153.5) 
132
Repl. odontostyle
-
-
149
Odontophore
86.5, 95 
86.8 + 2
(85 - 90) 
82
Stylet
237.5, 242 
231.3 + 7.2
(225.5 - 242) 
214
Guiding ring 
148, 146
136.8 + 4.5
(133 - 147) 
127
Nerve ring 
241, 266 
252.9 + 7.5
(247 - 264.5) 
227
Hemizonid
226, - 
214.1 + 5.1
(207 - 224) 
-
h
11, 10.5 
9.3 + 0.8
(7.5 - 10) 
10.5
h%
35, 33
30.4 + 4.7
(20 - 34) 
30

DESCRIPTION
    Female:  Habitus weakly to moderately curved ventrally.  Lip region 6-7 um high, slightly offset  from rest of body. All specimens were  flattened to various degrees, this possibly affecting the lip region shape and width. Amphid apertures 7-9 um wide, at 6-7 um from anterior end, occupying about 52% of the lip region width.  Body pores conspicuous; distribution in neck region: twelve to thirteen laterally, nine to ten ventrally, three dorsally.  Vestigium small, 1.5 um long, difficult to see.  Basal flanges 17.5-20.5 um wide.  Reproductive system with anterior genital branch reduced and incomplete: ovary absent, oviduct reduced to a mass of cells (23-29 um long), sphincter, pars dilatata uteri (48-55 um long), and uterus (63-78 um long) recognisable but reduced.  Posterior genital branch complete with ovary 73-83 um long, convoluted oviduct 40-48 um long, pars dilatata oviductus 37-43 um long, sphincter and uterus with pars dilatata uteri 28-33 um long, and uterus without Z-differentiation and with tubular part 138-175 um long.  Ovejector 48-60 um long.  In a few females, an accumulation of small rounded cells, reminiscent of sperm cells, present at the distal end of the posterior genital tract where the gonad reflexes (this may point to hermaphroditism in this species, but this needs confirmation).  Tail tapering to broadly rounded terminus with main curvature on the dorsal outline.  In some severely flattened specimens, the tail appearing almost hemispherical.  Blind terminal canal absent. Two pairs of caudal pores clearly seen on tail, posterior to anal opening; one pair located laterally near tail terminus and one pair located almost at level of anal opening in a sublateral position. 
    Male:  not found. 
    Juvenile:  General appearance as in female.  Genital primordium 52.5 x 32 um.

(Description- Swart & Quénéhervé,1998) 

Specimens from Costa Rica
     Xiphinema costaricense (1)
     Xiphinema costaricense (2)