Volume 1, Part 2 (1993)
of the order Tylenchida (Nematoda), 74-95.
Luc and S.E. Spiridonov. Severianoia annamensis sp.n. from
Pycnoscelus surinamensis from Quang Tri province,
E.S. Ivanova. Parasitic
nematodes of earthworms: 1. Four new species of Dicelis Dujardin,
1845 from Eastern Europe and a diagnosis of the genus, 103-116.
and T. D'Addabbo. Potential application of the leaves of Ruta
graveolens for controlling
Meloidogyne javanica on sunflower,
Notes on the family Tubolaimoididae Lorenzen, 1981 (Nematoda: Chromadoria)
with a description of Chitwoodia tenuipharyngealis sp.n., 121-128.
Ryss. Aphlenchoides tsalolikhini sp.n. (Nematoda: Aphelenchida)
from Ethiopia, 129-132.
- In Memoriam, 133-134.
- Dissertation Abstracts, 135-138.
- Book Review, 139
Phylogeny of the order Tylenchida (Nematoda)
The most valuable structures for the macrotaxonomy of the class Nematoda
- amphid, phasmid, deirid, lateral field and head sensory organs are situated
on the lateral radii of the nematode body or near them. It is proposed
to consider all these organs as a complex structural unit: «the lateral
complex». Caudal alae of males (bursa) also belong to the lateral
complex. There are 1) the non-phasmidial caudal alae (phasmids are absent
from the tail); 2) the pre-phasmidial caudal alae (caudal alae are situated
anterior to the phasmids and 3) the phasmidial caudal alae (phasmids are
situated on the caudal alae as phasmidial ribs, alae envelop the tail).
Phylogeny of the order Tylenchida is analysed by comparison of the lateral
complexes of the taxa. Atetyleitchus is the most primitive taxon. Some
amendments are made to the classification by Siddiqi (1986), which is considered
closest to the natural order. The order Tylenchida consists of 4 suborders,
three of them (Tylenchina, Criconematina, Hexatylina) possess complexes
of synapomorphic characters and therefore are considered to be monophyletic.
The suborder Hoplolaimina is regarded as being paraphyletic, thus containing
the remainder of the taxonomic divisions of the order. Roplolaimina contains
2 superfamilies: 1) Dolichodoroidea: Psilenchidae, Meiodoridae n. rank:
Mejodorus, Bracitydorus, Neodolichodorus, Hirschmanniella and 2) Hoplolaimoidea:
Merliniidae n.rank, including Pratylendioides, Belonolaimidae, (corresponding
to Belonolaiminae sensu Siddiqi, 1986), Tylenchorhynchidae and other families
of higher plant parasites. Hoplolaimoidea differs from Dolichodoroidea
by the structure of the phasmidial caudal alae of males which envelops
the tail, and by a lateral field in females and juveniles reaching the hyaline portion of the tail (in Dolichodoroidea the lateral field does
not reach the hyaline portion of the tail). Psilenchidae represent a paraphyletic
group which is not defined by synapomorphic characters. The most primitive
taxa of Tylenchida, including Atetyleitchus, belong to this group. Keys
for the identification of the superfamilies and the families of the suborder
Hoplolaimina are given.
Key-words: phylogeny, morphology, evolution, new taxa,
Merlinnidae n. rank, Meiodoridae n. rank.
Luc, P. Van and
Severianoia annamensis sp.n. from Surinam cockroaches
surinamensis from Quang Tri province, Viet Nam
Severionoia annamensis sp. n. is described from the hind gut
of cockroaches Pycnoscelus surinamensis collected in Quang Tri province,
Viet Nam. Morphological dimorphism in males is reported. The composition
and diagnosis of the genus Severianoia are discussed. A single female
of Suifunema sp. and numerous immature Leidynema females
were also found in the same host.
Key words: Severianoia annamensis sp. n., Thelastomatidae,
Oxyurida, cockroach host, South-East Asia.
Parasitic nematodes of earthworms: I. Four new species
of Dicelis Dujardin, 1845 from Eastern Europe and a diagnosis of
Four new species of Dicelis are described from earthworms collected
in the European part of Russia and the Crimea. D. kimmeriensis sp.
n. is similar to D. hyrcanus sp. n., but differs by having larger
spicules with a smooth surface, larger number of genital papillae and morphometric
differences. D. lovatiana sp. n. and D. lurnbricicola sp.
n. resemble the type species D. filaria. However, both species differ
from the latter by having larger eggs and more numerous genital papillae.
These two new species can be distinguished by the length and morphology
of their spicula and the size of their cephalic papilla. An amended diagnosis
for the genus Dicelis Dujardin, 1845 is presented. Specimens of
the genus Dicelis identified by Belostozkaya et al. (1987) as
filaria are defined here as D. pereliae sp. n.
Key words: Drilonematidae, morphology, Dicelis, D.
kimmeriensis sp. n., D. hyrcanus sp. n., D. lovatiana
sp. n., D. lumbricicola sp. n., earthworm hosts.
N. and D'Addabbo, T.
Potential application of the leaves of Ruta graveolens
for controlling Meloidogyne javanica on sunflower
The efficacy of Ruta graveolens leaves, used as green manure,
was compared with fenamiphos for the control of Meloidogyne javanica
on sunflower in the glasshouse. Chopped green leaves of R. graveolens
were less effective than fenamiphos. The effect of R. graveolens
was more evident on nematode population density than on plant growth parameters,
and always only at high initial population densities of nematodes.
Key words: Meloidogyne javanica, nematicidal properties,
Notes on the family Tubolaimoididae Lorenzen, 1981
(Nematoda: Chromadoria) with a description of Chitwoodia
tenuipharyngealis sp. n.
Chitwoodia tenuipharyngealis sp. n. and Tubolaimoides tenuicaudatus
(Allgen, 1934) are described from specimens recovered from the White Sea.
tenuipharyngealis sp. n. differs from
C. menora Gerlach, 1956
by its longer body (1760 Ám vs 1148 Ám), finely striated cuticle and proximally
widened spicules, and from C. warwicki Jayasaree, 1976 by its amphidial
width (12 Ám and 39% c.b.d. vs 5-6.5 Ám and 19-26% c.b.d), thin and weak
pharynx which is not enlarged anteriorly and its longer, thinner body (1760 Ám
and a=52 vs 1410-1460 Ám and a=38-39). During ontogenesis in C. tenuipharyngealis
the round amphid of the J4 transforms into the loop-shaped amphid of the
adult. The phenomenon of amphid metamorphosis in larval development of
marine nematodes is discussed and new amended diagnosis of the taxa Tubolaimoides
1963, Chitwoodia Gerlach, 1956 and Tubolaimoididae Lorenzen, 1981 are presented.
Key words: marine nematodes, morphology, Chitwoodia
tenuipharyngealis sp. n., Tubolaimoides , Chitwoodia , Tubolaimoididae,
the White Sea.
Aphelenchoides tsalolikhini sp. n. (Nematoda: Aphelenchida)
Aphelenchoides tsalolikhini sp. n. is described from specimens
collected from the Langano lake region in Ethiopia. It differs from all
other species of Aphelenchoides by the presence of 2 pairs of dark-stained
sclerotized cells on the dorsal side of the vagina. A. tsalolikhini
sp. n. is close to A. franklini Sing, 1969,
Sanwal, 1965, A. subparietinus Sanwal, 1961 and differs from them
by shape of the tail terminus, longer male tail and shorter dorsal wing
on the spicule.
Key words: morphology, Aphelenchoides tsalolikhini
sp. n., Ethiopia.