首页|Xishania的异物同名问题以及对Xishania fusiformis Hong,1981和Xishania longiusula Hu,2002的一些讨论

Xishania的异物同名问题以及对Xishania fusiformis Hong,1981和Xishania longiusula Hu,2002的一些讨论

THE HOMONYMY OF XISHANIA WITH REFERENCE TO XISHANIA FUSIFORMIS HONG, 1981 AND X. LONGIUSULA HU, 2002

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洪友崇1981年建立了京西早白垩世卢尚坟昆虫群,认为Xishania fusiformis(梭形西山蝽)为其中的代表类型,并由此建立1新科1新属1新种.胡世学2002年报道了昆明海口耳材村剖面澄江动物群蠕虫化石Xishania longiusula(长形西山虫),建立1新属1新种.因此,Xishania Hu,2002为Xishania Hong,1981的晚出异物同名,且Xishania fusiformis和Xishania longiusula的分类位置也存在很大争议.文中结合多年来收集的大量梭形西山蝽和长形西山虫标本对二者进行讨论,指出梭形西山蝽与Mesolygaeus laiyangensis(莱阳中蝽)存在区别,代表不同的种类.而长形西山虫属于澄江动物群中的火把虫类,但与模式种存在显著区别,可作为Facivermis(火把虫)一新种.
The name Xishania fusiformis Hong, 1981 was established for an Early Cretaceous insect from the Lushangfen Formation of western Beijing.Here we compare it with Mesolygaeus laiyangensis Ping, 1928, also from Early Cretaceous strata and which has a similar habit and also other characters such as three-segmented tarsi having an extremely short first tarsomere. However X. Fusiformis differs in having a longer second tarsomere which is armed distally with rows of dense setae. We agree with Zhang (1991) that both of these Cretaceous insect species most closely resemble the extant hemipteran family Saldidae. Their exact generic status remains however to be studied and clarified. The generic name Xishania has also however been used for quite unrelated material- for problematic worms from the famous Chengjiang Fauna of Cambrian age, named X. Longiusula Hu, 2002 (in Chen etal. , 2002). However in this case, new evidence (Huang, 2005; Liu et al. , 2006) shows that the original description was in the reverse ofthe correct orientation. Therefore, X. Longiusula is a very elongate worm that had a small head having a pair of antennae and with 5 pairs of long anterior appendages bearing setae; the trunk was covered with annulations, swollen posteriorly, armed with a few rows of circlet hooks, and had an anal cone. As such, X. Longiusula differs only in detail from Facivermis yunnanicus Hou and Chen, 1989. We therefore propose that X. Longiusula is transferred to the genus Facivermis Hou and Chen, 1989, as Facivermis longiusula (Hu, 2002).

XishaniaEarly CretaceousLushangfen entomo faunaXishania fusi formis Hong1981CambrianChengjiang faunaXishania longiusula Hu2002

黄迪颖、蔡晨阳、陈爱林

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现代古生物学与地层学国家重点实验室,中国科学院南京地质古生物研究所,南京210008

澄江动物群国家地质公园,云南澄江652500

Xishania 早白垩世 卢尚坟昆虫群 Xishania fusiformis Hong 1981 寒武纪 澄江动物群 Xishania longiusula Hu 2002

国家自然科学基金国家自然科学基金中国科学院资源环境领域知识创新工程方向性项目国家重点基础研究发展规划(973计划)

4087201091114201KZCX2-YW-QN1042012CB821903

2012

古生物学报
中国古生物学会

古生物学报

CSTPCDCSCD北大核心
影响因子：0.367
ISSN：0001-6616
年,卷(期)：2012.51(1)
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