Oldest webspinners from the Middle Jurassic of Inner Mongolia, China (Insecta: Embiodea) Author Huang, Di-Ying Author Nel, André text Zoological Journal of the Linnean Society 2009 2009-08-31 156 4 889 895 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2008.00499.x journal article 10.1111/j.1096-3642.2008.00499.x 0024-4082 5444673 FAMILY SINEMBIIDAE FAM. NOV. Type genus: Sinembia gen. nov. , other genus Juraembia gen. nov. Diagnosis: Female with ovipositor; cerci threesegmented, with (at least in the female) long setae; male genital appendages almost symmetrical; prognathous head; absence of ocelli; compound eyes in posterolateral position; thorax not very elongate; pronotum without visible prescutum; a median longitudinal furrow on prothoracic scutum; three-segmented tarsi; mid legs of normal size, not reduced; thickened hind femora; swollen fore basitarsus (visible in Juraembia gen. nov. ); absence of bladders on hind basitarsus; both male and female fully winged; presence of blood sinuses ScBS (in both Sinembia gen. nov. and Juraembia gen. nov. ) and CuBS (but only preserved in Sinembia gen. nov. ); MA unforked.