Ouvrard David, Bourgoin Thierry, Campbell Bruce C
Laboratoire d'Entomologie & ESA 8043 du CNRS, Muséum national d'Histoire naturelle, F-75005 Paris, France.
J Morphol. 2002 Jun;252(3):276-90. doi: 10.1002/jmor.1105.
A unique set of morphological characters based on the hemipteran (sensu lato) thorax are used to define the pleuron of Psylloidea. New external and internal topographical descriptions of pleurites of all three thoracic segments are provided based on observations of specimens from various genera representing the current taxonomic arrangement of Psylloidea. Variations in propleurite morphology and the anteroventral angle of the episternum among taxa are clarified. The mesothoracic pleural sulcus is found to be a distinct groove formed by the deep fossa of the pleural apophysis and is not a secondary structure, as assigned by previous authors. A newly discovered internal apodeme of the metathoracic trochantin and a serially homologous structure in the mesothorax isolate the trochantinal territory of the second segment. The metathoracic pleural sulcus appears to be pressed against the ventral edge of the metepimeron, as previously described for the mesothorax of certain species of other insects having a strongly developed meron. Use of morphological interpretations and newly discovered apodemes to assess primary homology of structures for phylogenetic and taxonomic studies is discussed. A glossary of standardized morphological terms for thoracic structures of non-heteropteran Hemiptera based on this study and other recent and former dissertations on the insect thorax is provided.
基于半翅目（广义）胸部的一组独特形态特征被用于定义木虱总科的侧板。依据对代表木虱总科当前分类排列的各属标本的观察，提供了所有三个胸节侧板的新的外部和内部地形学描述。明确了不同分类单元中前胸侧板形态和前侧片前腹角的变化。发现中胸胸膜沟是由胸膜骨突的深窝形成的明显凹槽，并非如先前作者所认为的是次生结构。新发现的后胸转节内骨片以及中胸的一系列同源结构分隔了第二胸节的转节区域。后胸胸膜沟似乎如先前对某些具有强烈发育的后基节的其他昆虫中胸的描述那样，紧贴后胸后侧片的腹缘。讨论了利用形态学解释和新发现的骨片来评估结构的初级同源性以用于系统发育和分类学研究。基于本研究以及其他近期和先前关于昆虫胸部的论文，提供了非异翅亚目半翅目胸部结构的标准化形态学术语词汇表。
