Foissner Wilhelm
Universität Salzburg, FB Organismische Biologie, Hellbrunnerstrasse 34, 5020 Salzburg, Austria.
Soil Org. 2008 Jan;80(1):81-99.
Few data are available on soil ciliates from Asia. Thus, seven samples were collected in Singapore in February 1987 and investigated between December 1987 and May 1989, using the non-flooded Petri dish method, live observation, and silver impregnation. One hundred and three ciliate taxa, all new for the fauna of Singapore and Malaysia, were found. This applies also to Hemimastix amphikineta, a highly characteristic, euglenid flagellate with Gondwanan distribution. At least three undescribed ciliate species were discovered, viz., Ottowphrya magna, which has been published by Foissner (1993), Dileptus microstoma Vd'ačný & Foissner (2008), and Suturothrix monoarmata, which is described in the present paper. The new genus Suturothrix belongs to the order Haptorida and is unique in having a heteromorphic dorsal brush consisting of three staggered rows, thus forming a suture with the last right side ciliary row. Suturothrix monoarmata is a slender, middle-sized (~ 100 × 15 μm) ciliate easily recognisable by the single or two thick extrusomes in the centre of the minute oral bulge. The species is not restricted to Asia but has been found also in soil from the Amazon floodplain, Brazil.
关于亚洲土壤纤毛虫的资料很少。因此，1987年2月在新加坡采集了7个样本，并于1987年12月至1989年5月期间进行了调查，采用非淹没培养皿法、活体观察和银浸染法。共发现了103种纤毛虫类群，均为新加坡和马来西亚动物区系的新记录。这也适用于半鞭毛虫（Hemimastix amphikineta），一种具有冈瓦纳分布特征的裸藻鞭毛虫。至少发现了三种未描述的纤毛虫物种，即大奥托弗里亚虫（Ottowphrya magna），已由福斯纳（1993年）发表，小口双列虫（Dileptus microstoma Vd'ačný & Foissner，2008年），以及本文描述的单臂缝毛虫（Suturothrix monoarmata）。新属缝毛虫属（Suturothrix）属于吸口目（Haptorida），其独特之处在于具有由三排交错排列组成的异形背刷，从而与最后一排右侧纤毛排形成一条缝线。单臂缝毛虫是一种细长的中型（约100×15μm）纤毛虫，在微小的口突中央有一个或两个粗大的刺丝泡，很容易识别。该物种不仅限于亚洲，在巴西亚马逊河泛滥平原的土壤中也有发现。
