Molecular and morphological characterization of needle nematode Longidorus himalayensis Khan, 1987 and dagger nematode Xiphinema brevicolle Lordello &amp; Costa, 1961 (Dorylaimida: Longigoridae) from Northeast China

Sagir Hussain; Pingting Guan; Erum Iqbal; Nasira Kazi; Haotian Ma; Abdul Hafeez; Donghui Wu

doi:10.11865/zs.2026401

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Zoological Systematics ›› 2026, Vol. 51 ›› Issue (4) : 245-258. DOI: 10.11865/zs.2026401 CSTR: 32106.14.zs.2026401

Molecular and morphological characterization of needle nematode Longidorus himalayensis Khan, 1987 and dagger nematode Xiphinema brevicolle Lordello & Costa, 1961 (Dorylaimida: Longigoridae) from Northeast China

Sagir Hussain¹, Pingting Guan^{1, 2}, Erum Iqbal³, Nasira Kazi³, Haotian Ma¹, Abdul Hafeez¹, Donghui Wu^{1, 2, 4, 5}

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Sagir Hussain¹, Pingting Guan^{1, 2}, Erum Iqbal³, Nasira Kazi³, Haotian Ma¹, Abdul Hafeez¹, Donghui Wu^{1, 2, 4, 5}

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摘要

Two virus vector nematodes Longidorus himalayensis and Xiphinema brevicolle belonging to the family Longigoridae are first recorded from forest and cropland in the Northeast China. The new hosts of both speices are maize (Zea mays), pine (Pinus), Russian olive (Elaeagnus angustifolia), Chinese angelica tree (Aralia chinensis), pear (Pyrus communis), peach (Prunus persica), pink bean flower (Mirabilis jalapa), and Chinese crab apple (Malus baccata). Both morphological and morphometric analyses confirmed their identities. L. himalayensis showed slight differences from the type description, including longer body length (4.7–5.8 vs. 4.5–5.5 mm), longer odontostyle (122–125 vs. 107–120 μm), vulva position at 46–49% vs. 47–50%, and a shorter dorsally convex, bluntly rounded to hemispherical tail. X. brevicolle showed only minor deviations from previous descriptions. It is the first report of L. himalayensis with morphology and molecular data from China.

Abstract

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Sagir Hussain, Pingting Guan, Erum Iqbal, Nasira Kazi, Haotian Ma, Abdul Hafeez, Donghui Wu. Molecular and morphological characterization of needle nematode Longidorus himalayensis Khan, 1987 and dagger nematode Xiphinema brevicolle Lordello & Costa, 1961 (Dorylaimida: Longigoridae) from Northeast China[J]. Zoological Systematics. 2026, 51(4): 245-258 https://doi.org/10.11865/zs.2026401