Browsing by Author "Mohammad Rafiq Siddiqi"

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    Ecological adaptations of plant-parasitic nematodes
    (1983) Mohammad Rafiq Siddiqi
    Ecological adaptations of Tylenchida, Aphelenchida, Dorylaimida and Triplonchida (= Diphtherophorina Coomans & Loof, 1970, new synonymy) are discussed. The ectoparasites are categorised as (a) passive feeders, (b) migratory root surface feeders, (c) migratory deep root tissue feeders, (d) sedentary root ectoparasites and (e) migratory ectoparasites of aerial parts. The endo-parasites are grouped under (a) migratory endoparasites of aerial parts, (b) migratory endoparasites of subterranean parts and (c) sedentary endoparasites.
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    Four new genera and four new species of Mononchs (nematoda)
    (1984) Mohammad Rafiq Siddiqi
    Caputonchus capitatus n. gen., n. sp., Mulveyellus n. gen., Nigronchus parvus n. gen., n. sp., Truxonchus n. gen., Actus nanurus n. sp. and Crassibucca colombica n. sp. are described. Truxon-chus confundus n. nom. is proposed as a replacement name for Anatonchus paralleni Jairajpuri & Khan, 1982 which is considered nomen nudum. Mulveyellus antedontus (Mulvey, 1963) n. comb., M. antedontoides (Coetze, 1967) n. comb., M. jairi (Lordello, 1959) n. comb, (type-species), M. longicaudatus (Baqri, Baqri & Jairajpuri, 1978) n. comb., M. monhystera (Cobb, 1971) n. comb, and M. vorax (Cobb, 1971) n. comb, are proposed for species previously under lotonchus or Mononchus. Truxonchus alleni (Mulvey, 1961) n. comb., T. dolichwus (Ditlevsen, 1911) n. comb., T. mulveyi (Altherr, 1968) n. comb, and T. subacutus (Mulvey, 1961) n. comb, (type-species) are proposed for species previously under Anatonchus. Four new genera and four new species of the order Mononchida are described in this paper. The nematodes were fixed in 3-5% formaldehyde solution, processed through warm lactophenol and mounted in dehydrated glycerin.
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    Four new species of Pachy dorylaimus gen. n. and Tylenchodorus tylosus gen. n., sp. n. (Dorylaimida : Qudsianematinae) from Colombian rain forest
    (1983) Mohammad Rafiq Siddiqi
    Pachydorylaimus gen. n. and Tylenchodorus gen. n. belong to Qudsianematinae. P achy dory laimus furcatus gen. n., sp. n., P. pachyvulvus sp. n., P. longicaudatus sp. n., P. notabenus sp. n. and Tylenchodorus tylosus gen. n., sp. n. are described and illustrated from nematodes collected in Colombian rain forest during Colombian Amazonas Expedition. Pachydorylaimus differs from Eudorylaimus in having a truncate lip region, small oval amphid apertures, thice-walled odontostyle with prominently furcate base, odontophore with basal sclerotized (ianges and elongate pointed tail with a long terminal hyaline portion. Tylenchodorus gen. n. differs from other genera of the Qudsianematinae in having an odontophore provided with round basal knobs
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    Four new species of Xiphinema Cobb, 1913 (Nematoda : Dorylaimida) from East Africa
    (1979) Mohammad Rafiq Siddiqi
    Xiphinema neobasiri sp. n. and X. michelluci sp. n. are described from cultivated soils of Malawi and X. heynsi sp. n. and X. mammatum sp. n. from a lucerne field in South Kilimanjaro, Tanzania. X. neobasiri sp. n. and X. michelluci sp. n. are close to X. basiri and X. seredouense, respectively. X. heynsi sp. n. is close to X. clavatum but differs in having a continuous lip region, a shorter odontostyle and a non-clavate female tail. X. mammatum sp. n. has a hemispherical tail end bearing an offset terminal peg directed dorsally and stellate spines in the uterus. Numerous spore-like bodies occur in the uterus of X. michelluci sp. n. Males are described for X. heynsi sp. n. and X. mammatum sp. n.
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    Paratrophurus acristylus sp. n. and Tylenchorhynchus graciliformis sp. n. (Nematoda: Tylenchida) from Wheat Fields in Libya
    (1983) Mohammad Rafiq Siddiqi; Ziauddin Ahmad Siddiqui
    Paratrophurus acristylus sp. n. and Tylenchorhynchus graciliformis sp. n. are described from wheat fields in Libya. Paratrophurus acristylus has a slender (18-21-Aim-long) spear with small basal knobs 2.5-3.2 M™ across, a subclavate female tail with terminal 21-28% hyaline, a postanal intestinal sac filling about three-quarters of tail cavity, and 22.5-23-um-long spicules. Tylenchorhynchus graciliformis is slender (a = 40-49 in females, 45-52 in males) and has a knoblike lip region with 5-6 distinct annules, a 17-18.5-Mm-long spear with large basal knobs 4.5-5 Mm across, female tail with 16-20 annules, and spicules 19-21 ^m long. During a 1980-1981 survey of Libyan wheat fields for plant-parasitic nematodes made by one of us (Z.A.S.), two new species belonging to the family Dolicho-doridae were found. These are described here as Paratrophurus acristylus sp. n. and Tylenchorhynchus graciliformis sp. n. The nematodes were heat-killed, fixed in a 3% solution of formaldehyde, and mounted in dehydrated glycerine after processing them through warm lactophenol. All the measurements were taken from glycerine-mounted specimens.
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    Seven new genera of dorylaimid nematodes from Colombian rain forest
    (1982) Mohammad Rafiq Siddiqi
    New genera described from soil in Colombian rain forest are Fuscheila (Thornenematidae), Capilon-chus (Tylencholaiminae, Tylencholaimidae), Cave-onchus (Tyleptinae, Leptonchidae), Coronatyleptus (Belonenchinae, Leptonchidae), Promumtazium (Mumtaziinae, Tylencholaimidae), Tantunema (Thorniinae, Tylencholaimidae) and Zalophidera (Xiphinemellinae, Tylencholaimidae). 12 new species belonging to these genera described and illustrated are: Fuscheila citrifera (type species), F. godmanae, Capilonchus lineatus (type-species), Caveonchus colombicus (type species), C. brevi-saccus, Coronatyleptus barbarae, C. curvus, C. ro-bustus, Promumtazium pyxidorum (type species), Tantunema bothriocephalum (type species), Zalophidera tylocephala (type species) and Z. idiostoma. Caveonchus saccatus (Goseco, Ferris & Ferris, 1981) n. comb, and Coronatyleptus coronatus (Siddiqi & Khan, 1965) n. comb, (type-species) are made for Basirotyleptus saccatus and B. coronatus, respectively. The composition of the families Leptonchidae and Tylencholamidae is discussed and Leptonchoidae Thorne, 1935 (Ferris, 1970) is made a junior synonym of Tylencholaimoidea Filipjev, 1934 (n.rank).
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    Six New Genera of Dorylaimid Nematodes
    (1981) Mohammad Rafiq Siddiqi
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    Two New Nematode Genera, Safianema (Anguinidae) and Discotylenchus (Tylenchidae), with Descriptions of Three New Species
    (1980) Mohammad Rafiq Siddiqi
    Safianema gen.n. is proposed under Anguininae, family Anguinidae. It differs from Di-tylenchus in having esophageal glands forming a long diverticulum over the intestine. It is compared with Pseudhalenchus whose diagnosis is amended. Safianema lutonense gen.n., sp.n. is described from peaty soil under oak in Luton, England. Safianema anchilisposomum (Tarjan, 1958) comb.n., 5. damnation (Massey, 1966) comb.n., and 5. hylobii (Massey, 1966) comb.n. are proposed for species previously in Pseudhalenchus. Discotylenchus gen.n. is close to Filenchus but has a strongly tapering lip region with a distinct disc at the apex. Two new species of this genus are described—D. discretus (type species) from apple and cabbage soils at Damascus, Syria, and D. attenuatus from bush soil at Ibadan, Nigeria.
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    The Unusual Position of the Phasmids in Coslenchus Costatus (De Man, 1921) Gen. N., Comb. N. and Other Tylenchidae (Nematoda: Tylenchida)
    (1978) Mohammad Rafiq Siddiqi
    Phasmids are reported in Aglenchus, Campbellenchus, Coslenchus gen. n., Filenchus, Irantylenchus, Malenchus, Ottolenchus and Tylenchus as occurring just dorsal to the lateral fields in the post-median region of the body of males, females and juveniles; in the female their position being at or near the vulva. This unusual position of the phasmids is a unique feature of the Tylenchidae. In Coslenchus costatus (de Man, 1921) gen. n., comb. n. the phasmids generally occur on the first dorsal ridge next to the lateral field. Coslenchus gen. n. is proposed for those species of Aglenchus, sensu lato, that have longitudinal cuticular ridges around the body. The type-species C, costatus (de Man, 1921) comb. n. and C. areolatus (Egunjobi, 1967) comb, n., C. indicus (Khan, Chawla & Prasad, 1969) comb. n. and C. lycopersicus (Husain & Khan, 1976) comb. n. are include? in the new genus.