Ogma floridense
Vovlas, Inserra and Esser, 1991

Holotype (female in glycerine):  Measurements in Table 2.
    Females in glycerine (n = 10):  Measurements in Table 2.  Body slightly curved ventrally, tapered slightly anteriorly, more so posteriorly, tail conoid.  Labial annuli two:  First one set off 15.0 - 17.5 wide, directed slightly forward, marked by minute crenations; second one smaller, 11-15 wide; borders smooth.  Oral disc slightly hexagonal, submedian lobes appearing as small, distinct outgrowths in lateral view.  En face view submedian lobes are fused within an irregular hexagonal rim with six outward connections.  Oral opening at center of oral disc and between two plates.  Amphidial apertures slit-like, on lateral edges of the oral disc.
    Annuli at midbody with 10 retrorse entire scales, sometimes divided into two, rarely three, blunt projections, 3-8 long.  Anterior and posterior annuli fringes close, continuous.  Excretory pore on ventral divided scale at level of esophagus base.
    Vulva with two rounded lips, smooth, projecting outward, posteriorly directed.  Ovary outstretched, sometimes overlapping posterior part of esophagus.  Spermatheca present.  Tail elongate, conoid, uniformly decreasing to single lobed terminus.
    Male (n = 1): Specimen enclosed in fourth-stage cuticle.  L = 460; width = 28; body annuli 4.5 - 5.0 thick; a = 16; b = ?; c = 15; vestigial stylet length = 42; excretory pore 126 from anterior end; lateral field 4.7 wide, 17% of body width, marked with four longitudinal lines; spicules slender, ventrally curved 42 long; gubernaculum simple, 6 long; tail 28 long; testis 44 long; R = 106.
Type host and locality
    Specimens collected on 15 September 1988 from soil about the roots of Liquidambar styraciflua L. in swamps in the Aucilla wildlife management area northwest of Perry, Taylor County, Florida.
Diagnosis
    Ogma floridense (Vovlas, Inserra and Esser, 1991) is characterized by having 1) first labial annulus wider than the second, marked by distinctive crenations, 2) robust stylet (87 - 98), 3) 52 - 57 body annuli, strongly retrorse with scales 3-8 long, arranged in 10 longitudinal rows at midbody, 4) scales usually entire or divided in two processes.
Relationships
    Ogma floridense is most closely related to O. hungaricum (Andrássy, 1962) Siddiqi, 1986.  The Ogma floridense female can be distinguished from O. hungaricum by the following:  the first labial annulus wider than the second, vs. being subequal in O. hungaricum; annulus scales predominantly entire or divided into two processes vs. three, sometimes two or four in O. hungaricum; shorter body length (360-471 vs. 480 -550); shorter stylet (87-98 vs. 95-110); a more anterior excretory pore (Rex = 17-19 vs. 21-23).
 

Table2. Morphometrics of holotype and 14 female paratypes of Ogma floridense from Florida 
Morphological characters*
Holotype
Range
Average
Standard deviation
Measurements in um
Body length
433
360-471
424
44.9
Body width
45
34-46
43
3.8
Esophagus length
123
101-135
122
10.2
Excretory pore anterior body end distance
143
108-152
133
13.6
Stylet length
89
87-98
91
4.2
Head (first labial annulus) width
16
15-17.5
16
0.8
Tail length
42
21-51
41
8.9
Annulus numbers
R (ventral side)
55
52-57
55
1.4
Rst
13
12-15
14
0.8
Roes
17
15-18
17
0.8
Rex
19
17-19
18
0.7
Rv
12
11-12
0.5
Ran
8
7-8
0.5
Percentages
V
85
82-87
84
1.5
St%L
20
19-24
21
1.8
St%esoph
72
68-86
75
5.3
Ratios
a
9.6
8.3-11.0
9.8
0.88
b
3.5
3.1-3.7
3.4
0.18
c
10.3
8.7-17.5
10.8
2.5
VL/VB
2.1
1.9-2.4
2.1
0.16
VL/st
0.75
0.51-0.90
0.74
0.10
*Abbreviations defined in Siddiqi, 1986        

(Description- Vovlas, Inserra, Esser, 1991)