M. Rafiq Siddiqi

Telotylenchus, a New Nematode Genus From North India (Tylenchida: Telotylenchinae N. Sub-Fam.)

Telotylenchus indicus n. g. n. sp., der in Aligarh, Nord Indien, in der Nahe von Graswurzeln gefunden wurde, wird beschrieben und abgebildet. Telotylenchus gleicht am meisten Tylenchorhynchus, aber er unterscheidet sich durch die Abwesenheit eines hinteren Osophagusbulbus und dadurch, dass die Osophagusdrusen frei in der Leibeshohle liegen. Telotylenchus und Pseudhalenchus Tarjan, 1958 bilden zusammen eine neue Unterfamilie der Telotylenchinae.

Aphelenchoides goodeyi n.sp. (Nematoda: Aphelenchoidea), a mycophagous nematode from South India.

Aphelenchoides goodeyi n. sp. was found feeding on a culture of mixed fungi from soil around citrus roots from South India. It is distinguished by the stellate tail mucro and the short gonad. The females are probably syngonic hermaphrodite. No males were found.

Four new species of the genus Tylenchus Bastian, 1865 (Nematoda) from North India

A~DR.~SSY (1954) revised the genus Tylenchus BASTIA~, 1865, and established four sub-genera, Tylenchus, Filenchus, Aglenchus, and Lelenchus, under it. A fifth sub-genus, Cephalenchus, was later added by GOODEY (1962). The genus Miculenchus ADR~_SSY, 1959, which is differentiated from Tylenchus mainly by the absence of the caudal alae in the male does not deserve the generic status as in Tylenchus (Lelenchus) there are some known species which have rudimentary or no caudal alae in male. The present author, therefore, considers Miculenchus as a sub-genus under Tylenchus. MEYL (1960) raised the status of Aglenchus, Filenchus and Lelenchus to generic rank. GOODEY (1963) objected to this re-ranking perhaps on the ground that the characters differentiating them are weak and TnORNE (1961) has not even recognized these sub-groupings. In the present study, however, the author, for the sake of convenience, has followed A~D~.iSS¥ (1954) and GOODEY (1963) in describing the present species. Four new species of Tylenchus from India are described here, two of these are classified under the sub-genus Tylenchus and one each under Cephalenchus and Aglenchus. Specimens of these species were collected by the author from soil around roots of plants and trees in North India. The worms were killed by gradually heating them in water, fixed in F. A. 4:10, and transferred to glycerine through lactophenol. They were finally mounted in dehydrated glycerine.

Four new species in the sub-family Tylenchinae (Nematoda) from North India

DAS (1960) and SIDDIQ~ (1959, 1961, 1963 and 1963a) have contributed to the knowledge of the Tylenchinae of India. The present paper deals with the description of four new species in this group viz., Psilenchus minor n. sp., Tylenchorhynchus rugosus n. sp., Ditylenchus nanus n. sp., and Ditylenchus mirus n. sp. Specimens of these species were obtained from soil around roots of plants and trees in North India. The eelworms were killed by gentle heat, fixed in F.A. 4: 10, and mounted in pure glycerine. I. P s i l e n e h u s ~n inor n. sp.

Seinura propora n.sp. and Aphelenchoides aligarhiensis n.sp. (Nematoda: Aphelenchoididae) from North India.

Seinura propora n. sp. has an excretory pore in the region of metacorporal swelling, 2-3 rows of oocytes in the ovary and the vulva at 79-80 percent of the body length. Aphelenchoides aligarhiensis n. sp. has a stellate mucro on the tail tip and, as compared to A. asterocaudatus Das, 1960, has a shorter spear, longer post-uterine sac and males.

Basiria Graaminophila N.G., N.Sp., (Nematoda: Tylenchinae) Found Associated With Grass Roots in Aligarh, India

Basiria graminophila n.g. n.sp., die in Aligarh, Indien, an Graswurzeln - Cynodon dactylon Pers. - gefunden wurde, wird beschrieben und abgebildet. Basiria n.g. gehort zur Unterfamilie der Tylenchinae und gleicht am meistem der Gattung Psilenchus De Man, 1921 ; von dieser unterscheidet sie sich durch die Lage der Offnung der Osophagusdruse, welche auf 3/4 bis eine Stachellange hinter der Basis des Stachels liegt; diese Eigenschaft ist einzigartig unter den Tylenchinae.

Three new species of Nothotylenchus (Nematoda: Neotylenchidae) from North India.

Three new species of Nothotylenchus viz., N. cylindricus n. sp., N. allii n. sp., and N. hexaglyphus n. sp. are described from Indian soils. N. cylindricus is distinctive in possessing an elongate cylindroid basal oesophageal bulb, thin-walled, oval spermatheca with spheroidal sperms and longer than head-width spear, while N. allii is characterized by its pyriform basal oesophageal bulb, four incisures in the lateral field and bursa enveloping only 2/5 of the tail. Nothotylenchus hexaglyphus can be differentiated by its poorly knobbed spear, set off pyriform basal bulb, posterior vulva, short postvulval uterine sac and lateral field with six incisures. A key to the species of the genus Nothotylenchus is presented.

Amphidelus sylvaticus n.sp. and A. candidus n.sp. (Nematoda: Alaimina) from India, with a key to the species of Amphidelus.

Amphidelus sylvaticus n. sp. and A. candidus n. sp. are described from soil from Nainital District, U.P., and Vizagapatam (South India) respectively. The female in both the species has a long, drawn out tail, single posterior gonad and an anterior uterine sac. The male of A. sylvaticus is also described. A key to the species of the genus is provided.

Five New Species of Soil Nematodes in the Genera Dorylaimoides Thorne & Swanger, 1936, and Discolaimium Thorne, 1939, From India

Three new species of Dorylaimoides viz., D. claboratus, D. modestus, and D. leptura and two of Discolaimium viz., D. simplex and D. paraconura are described from Indian soils.

Críconemoides citricola n.sp. (Nematoda: Criconematidae), with a redescription of Criconema murrayi (Southern, 1914).

Criconemoides citricola n. sp. from Mysore State, India, has an attenuated tail end, 73-78 body annules, 48-51 μ long spear and vulva located on 8-9th annule from posterior end. Criconema murrayi obtained from strawberry soil, Woodleigh, Devon, England is redescribed because the original description is poor and insufficient.