The millipede family Diplomaragnidae Attems, 1907 confirmed for mainland China, with descriptions of a new genus and new species (Diplopoda, Chordeumatida) Author Mikhaljova, Elena V. text Zootaxa 2022 2022-12-08 5219 2 185 192 journal article 204277 10.11646/zootaxa.5219.2.7 84d3b99b-968c-4a1c-9975-a3d1cd882a24 1175-5326 7413471 B50DA711-9900-41BE-9CD9-36AD01B8C078 Liaoninosoma gen. nov. Type and only species: Liaoninosoma marusiki sp. nov. , by present designation. Diagnosis. The genus differs from other genera of the family mainly by the posterior gonopod colpocoxite, which has an independent (separate), broad, longitudinal structure (“pad”) ( cp ), covered with dense spikes ( Fig. 16 ), with a shallow, partly open-edged sheath groove for the anterior gonopod telopodite together with a rectangular laterally and slightly caudally curved distal part, in combination with a large posterior angiocoxal process. A structure similar to the above-mentioned “pad” is not observed among all known genera of the family. Description. Body with 30 rings (including telson). Ommatidia present, fields triangular. Medium-sized paraterga well-developed, horizontal. Male legs 3 and 4 not enlarged. Male legs 5–7 enlarged, coxae with low subconical outgrowths, femora swollen and curved, tarsi very long, sabre-shaped. Male legs 10 and 11 with coxal glands. Telopodites of anterior gonopods flagelliform, 1-segmented, sheathed. Posterior gonopod colpocoxite with an independent (separate), broad, longitudinal spiky structure (“pad”) ( cp ) with a shallow, partly open-edged sheath groove for the anterior gonopod telopodite ( Figs 15, 16 ). Colpocoxites fused medially in its basal half; their distal parts curved laterally. Each colpocoxite entire, undivided. Angiocoxites with a subglobule ( sg ) strongly protruding caudad in posterior view ( Figs 15, 18 ). Angiocoxites ( a ) in anterior view strongly elongated ventrally, centrally convex along their length, however, they do not form independent, separate processes, but are fused with to colpocoxites ( Fig. 21 ). Anterior angiocoxal processes absent. Posterior angiocoxal processes present. Posterior gonopod telopodites 2-segmented, setose, telopoditomere 1 with a thin stem, telopoditomere 2 of medium length. Etymology. The generic name refers to the type locality, Liaoning Province . The name is a neuter noun. Distribution. China : Liaoning Province .