Martinsson Svante, Kjærandsen Jostein
Department of Zoology, University of Gothenburg, Box 463, SE-405 30 Göteborg, Sweden.
Zookeys. 2012(175):37-67. doi: 10.3897/zookeys.175.2388. Epub 2012 Mar 16.
The genus Katatopygiagen. n. is proposed for the Boletina erythropyga/punctus-group that was first introduced by Garrett (1924, 1925) and currently comprises eight described species. Molecular studies have strongly indicated that this group forms a monophyletic sister-group to a clade consisting of all other Boletina, Coelosia and Gnoriste, and its monophyly is supported by morphological data as well. The new genus includes the following species: Katatopygia antoma (Garrett, 1924), comb. n., Katatopygia antica (Garrett, 1924), comb. n., Katatopygia erythropyga (Holmgren, 1883), comb. n.,Katatopygia hissarica (Zaitzev & Polevoi, 2002), comb. n., Katatopygia magna (Garrett, 1925), comb. n., Katatopygia laticauda (Saigusa, 1968), comb. n., Katatopygia neoerythropyga (Zaitzev & Polevoi, 2002), comb. n. andKatatopygia sahlbergi (Lundström, 1906), comb. n., all transferred from Boletina. Katatopygia sahlbergi is found to be a senior synonym of Boletina punctus Garrett, 1925, syn. n. A phylogeny based on morphological data and using parsimony analysis yielded four most parsimonious trees where the new genus is retrieved as monophyletic with high support. Katatopygia neoerythropyga is found to be the sister-taxon to all other species that form two clades, one with Katatopygia sahlbergi-like species and one with Katatopygia erythropyga-like species. A key to males of Katatopygia is provided.
新属卡塔托皮吉亚属(Katatopygia gen. n.)是为红臀/点斑类柄眼蝇群(Boletina erythropyga/punctus-group)而设立的,该类群最初由加勒特(Garrett,1924年、1925年)提出,目前包括八个已描述的物种。分子研究有力地表明,这个类群形成了一个单系姐妹群,与由所有其他柄眼蝇属(Boletina)、鞘眼蝇属(Coelosia)和隐眼蝇属(Gnoriste)组成的一个进化枝相对,其单系性也得到形态学数据的支持。新属包括以下物种:卡塔托皮吉亚·安托马(Katatopygia antoma)(加勒特,1924年),新组合;卡塔托皮吉亚·安蒂卡(Katatopygia antica)(加勒特,1924年),新组合;卡塔托皮吉亚·红臀(Katatopygia erythropyga)(霍尔姆格伦,1883年),新组合;卡塔托皮吉亚·希萨尔卡(Katatopygia hissarica)(扎伊采夫和波列沃伊,2002年),新组合;卡塔托皮吉亚·巨臀(Katatopygia magna)(加勒特,1925年),新组合;卡塔托皮吉亚·宽尾(Katatopygia laticauda)(酒久佐,1968年),新组合;卡塔托皮吉亚·新红臀(Katatopygia neoerythropyga)(扎伊采夫和波列沃伊,2002年),新组合;以及卡塔托皮吉亚·萨尔贝吉(Katatopygia sahlbergi)(伦德斯特伦,1906年),新组合,所有这些均从柄眼蝇属转移而来。发现卡塔托皮吉亚·萨尔贝吉是加勒特1925年描述的点斑柄眼蝇(Boletina punctus)的次同名异物,新异名。基于形态学数据并使用简约分析得到的系统发育树产生了四棵最简约树,其中新属被检索为具有高支持率的单系类群。发现卡塔托皮吉亚·新红臀是所有其他物种的姐妹分类单元,其他物种形成两个进化枝,一个是具有类似卡塔托皮吉亚·萨尔贝吉物种的进化枝,另一个是具有类似卡塔托皮吉亚·红臀物种的进化枝。提供了卡塔托皮吉亚属雄性的检索表。