【剑线虫属】
剑线虫属（学名：Xiphinema），又名匕首线虫属tttsay1，是一种栖息于植物根部的潜移性tttsay1外寄生线虫动物Whitehead1998。本属物种会对农作物造成巨大经济损失，能影响葡萄、草莓、酒花及其他经济作物。主要物种计有：标准剑线虫（X. index）、美洲剑线虫（X. americanum）、X. diversicaudatum, X. italiae及X. pachtaicumEvans 1993。其细长的身体及长直的stylet是其型态特征，以便于直接刺穿植物的表皮至其维管组织nemaplex。本属不同物种会对植物的根部造成中等至大量的伤害：这些线虫穿透植物的根部，部分物种还会在根部造成虫瘿Evans 1993。
==型态学==
剑线虫的体型在线虫动物来说算是比较大，其成虫的体长有1.5mm – 5.0mmWhitehead1998。
==系统分类学==
本属现时列有296个物种，当中包括234个已接受物种，49 个异名及13个有待确定的物种YuHe。
===物种列表===
下列为本属部分物种：
* Xiphinema abrantinum Roca & Pereira, 1991
* Xiphinema aceri Chizhov & al., 1986
* Xiphinema aequum Roca & Lamberti, 1988
* 美国剑线虫  Xiphinema americana
* 美洲剑线虫 Xiphinema americanum Cobb, 1913
* Xiphinema artemisiae Chizhov & al., 1986
* 贝克剑线虫 Xiphinema bakeri Williams
* Xiphinema barense Lamberti & al., 1986
* Xiphinema basilgoodeyi Coomans, 1965
* Xiphinema belmontense Roca & Pereira, 1992
* 短颈剑线虫 Xiphinema brevicolle Lordello & Da Costa, 1961
* Xiphinema brevisicum Lamberti & al., 1994
* Xiphinema cadavalense Bravo & Roca, 1995
* 加州剑线虫 Xiphinema californicum
* 钱伯斯剑线虫 Xiphinema chambersi Thorne
* Xiphinema coronatum Roca, 1991
* Xiphinema coxi Tarjan, 1964
** Xiphinema coxi coxi Tarjan, 1964
** Xiphinema coxi europaeum Sturhan, 1985
* Xiphinema dentatum Sturhan, 1978
* Xiphinema diffusum Lamberti & Bleve-Zacheo, 1979
* Xiphinema dissimile Roca & al., 1988.
* 变尾剑线虫 Xiphinema diversicaudatum (Micoletzky, 1927) — nématode migrant des racines，裂尾剑线虫、异尾剑线虫
* Xiphinema diversum Roca & al., 1989.
* Xiphinema duriense Lamberti & al., 1993.
* 台湾剑线虫 Xiphinema elongatum Schuurmans Stekhoven & Teunissen, 1938
* Xiphinema exile Roca & al., 1989.
* 丝尾剑线虫 Xiphinema filicaudatum Loof et Maas
* Xiphinema fortuitum Roca & al., 1988.
* Xiphinema gersoni Roca & Bravo, 1993.
* Xiphinema globosum Sturhan, 1978.
* Xiphinema hispidum Roca & Bravo, 1994.
* Xiphinema histriae Lamberti & al., 1993.
* Xiphinema horvatovicae Barsi & Lamberti, 1999.
* 喜湿剑线虫 Xiphinema hygrophilum Southey et Luc
* Xiphinema illyricum Barsi & Lamberti, 1999.
* Xiphinema incertum Lamberti & al., 1983.
* 不明剑线虫 Xiphinema incognitum Lamberti & Bleve-Zacheo, 1979.
* 标准剑线虫 Xiphinema index Thorne & Allen, 1950.
* Xiphinema ingens Luc & Dalmasso, 1964.
* Xiphinema insigne
* Xiphinema intermedium Lamberti & Bleve-Zacheo, 1979.
* 意大利剑线虫 Xiphinema italiae Meyl, 1953
* Xiphinema lafoense Roca & al., 1988
* Xiphinema lanceolatum Roca & Bravo, 1993
* Xiphinema lapidosum Roca & Bravo, 1993
* Xiphinema longistilum Lamberti & al., 1994
* Xiphinema lupini Roca & Pereira, 1993
* Xiphinema lusitanicum Sturhan, 1983
* Xiphinema macedonicum Barsi & Lamberti, 1999
* Xiphinema macroacanthum Lamberti & al., 1989
* Xiphinema madeirense Brown & al., 1992
* Xiphinema melitense Lamberti & al., 1982
* Xiphinema mesostilum Lamberti & al., 1994
* Xiphinema microstilum Lamberti & al., 1994
* Xiphinema neovuittenezi Dalmasso, 1969
* 西剖剑线虫 Xiphinema occiduum
* Xiphinema opisthohysterum Siddiqi, 1961.
* Xiphinema pachtaicum (Tulaganov, 1938).
* Xiphinema pachydermum Sturhan, 1983.
* Xiphinema pombalense Bravo & Lamberti, 1996
* Xiphinema porosum Roca & Agostinelli, 1986
* Xiphinema pseudocoxi Sturhan, 1985
* Xiphinema pyrenaicum Dalmasso, 1969
* Xiphinema radicicola Goodey, 1936
* Xiphinema riparium Chizhov & al., 1991
* Xiphinema rivesi Dalmasso, 1969
* Xiphinema rotundatum Schuurmans Stekhoven & Teunissen, 1938
* Xiphinema sahelense Dalmasso, 1969
* Xiphinema santos Lamberti & al., 1993
* 里弗斯剑线虫 Xiphinema silvesi Roca & Bravo, 1998
* Xiphinema simile Lamberti & al., 1983
* Xiphinema taylori Lamberti & al., 1992
* 索恩剑线虫 Xiphinema thornei
* Xiphinema turcicum Luc & Dalmasso, 1964
* 犹他剑线虫 Xiphinema utahense
* Xiphinema variurum Barsi & Lamberti, 1998
* Xiphinema vuittenezi Luc & al., 1964.
==分布==
本属物种分布于全世界，当中两个在经济上很重要的物种，即：标准剑线虫 X.index及美洲剑线虫 X.americanum都在美国加州很常见，对当地酒庄造成影响。X. diversicaudatum亦见于美国其他部份地区、欧洲及澳大利亚。
==参考文献==
==外部连结==