Syn.:
|
Criconema limitaneum Luc,
1959
Criconemoides limitaneus (Luc) Luc & de Guiran, 1960 Neocriconema limitaneum (Luc) Diab & Jenkins, 1965 Mesocriconema limitaneum (Luc) Andrássy, 1965 Discocriconemella barberi Chawla & Samathanam, 1980 Discocriconemella repleta Pinochet & Raski, 1976 |
Photo Gallery- Las Cruces Biological station, Costa Rica |
Holotype (female): L = .27 mm; a = 8; b = 3.1; c = 21;
V = 94; stylet = 66 um; prorhabdion = 56 um; R = 107;
Rv = 10; Ran = 7; Rvan
= 3.
Female body plump; curved ventrally after fixation.
Head set off, with single annule nonretrose. Body annules retrose
except for the 7th to 17th on ventral side. Anastomoses present.
Annules with crenated margins, 4-5 um wide. Head in en
face view of paratype disc-shaped. Stylet robust; knobs anchor-shaped,
7-9 um across. Esophago-intestinal valve lobate. Spermatheca
ovoid. Sperm cells 1-2 um in diameter. Body diameter distinctly
narrows immediately posterior to vulva. Tail blunt with rounded terminus.
Allotype (male): L = .32 mm; a = 17; c = 21; T =
42; spicules = 25 um; gubernaculum = 5 um.
Body cylindrical. Cephalic region with round
protrusion at oral aperture which appears to be an artifact. Stylet
absent. Esophagus poorly developed. Lateral field with two
faint lines. Excretory pore 99 um from head region; hemizonid
four annules anterior to excretory pore. Testis out-stretched; sperm
cells about 1.0 - 1.5 um in diameter. Cloacal sheath distinct.
Spicules curved ventrad. Caudal alae rudimentary. Tail short,
blunt with rounded terminus.
Juveniles ( 3 fourth stage ?); L = .21 mm ( .20 - .22); a = 6;
b = 2.5 ( 2.3-2.8); stylet = 46 um (42-48); prorhabdion = 37 um
(33-39); R = 116 (113-120).
Body plump; curved ventally after fixation.
Head similar to adult female. Body annules retrose except for 5th
to approximately 15th on ventral side. Anastomoses present.
Annules smooth throughout body. Stylet robust with anchor-shaped
knobs, 7-8 um across. Developing ovary 72-80 um long.
Tail bluntly conoid.
Type habitat and locality: Soil about the roots of cacao, Theobroma cacao L., at Pauso Alegre, Porto Seguro, Brazil.
Diagnosis: Discocriconemella repleta is closely
related to D. colbrani Luc, 1970 and D. limitanea (Luc, 1959)
De Grisse & Loof, 1965. It can be differentiated from D. colbrani
by its larger number of body annules, 110 (107-116) vs. 79 (76-82); greater
Rv, 11 (10-12) vs 6-8; and the location of excretory
pore, (Rex), 39 (37-42) vs 27-28 for D. colbrani.
D. repleta differs from D. limitanea
by its larger stylet, 62 um (59-66) vs. 48-55 um. Another
population of 20 females measured by M. Luc showed a stylet length of 43
um
(38-50). Males of these two species also differ. D. repleta
has a shorter tail and a rudimentary bursa vs. longer tail and absence
of bursa in D. limitanea.
(Description [Discrocriconemella repleta] Pinochet & Raski,
1976)
This species included in the Criconematid Project