A morphometric approach to the comparative morphology of aedeagi shapes in net-winged beetles: A case study on the Macrolycus dotatus species group (Coleoptera: Lycidae) Author Liu, Hao Yu https://orcid.org/0000-0003-1383-5560 Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China liuhy@hbu.edu.cn Author Du, Ruo Lan Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China Author Zhao, Wei https://orcid.org/0000-0002-6686-3883 Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China Author Yang, Xing Ke Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China Author Yang, Yu Xia https://orcid.org/0000-0002-3118-6659 Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China yuxia0305@126.com text Arthropod Systematics & amp; Phylogeny 2023 2023-11-27 81 897 916 http://dx.doi.org/10.3897/asp.81.e111281 journal article http://dx.doi.org/10.3897/asp.81.e111281 1864-8312-81-897 39E0B43BFFBD46BFBA86F79314C7BE34 74A0F3C01CC757D9B37B2DBDDE8EADB5 Macrolycus jianfenglingensis Li, Bocak & Pang, 2015 Figures 3B , 4D-F , 5B , 8A, B Macrolycus jianfenglingensis Li, Bocak & Pang, 2015:325, Figs 7, 24, 25, 43. Material examined. China • 2♂ (IZAS); Hainan , Jianfengling ; 1984; G. Q. Mai leg. Descriptive notes. Male (Fig. 3B ). Antennae (Fig. 5B ) flabellate, overlapping two-thirds the length of the elytra when inclined. Antennomere II transverse; III-XI lamellate, lamella of antennomere III 0.8 times as long as joint itself, and lamella of IX longest, 5.1 times longer than joint itself. - Aedeagus : median lobe nearly in a horizontal line between basal and apical parts on dorsal side in lateral view (Figs 4F , 8A ); obviously curved at base in dorsal (Fig. 4D ) and ventral (Figs 4E , 8B ) views, subapical part inflated laterally and feebly inflated dorsally (Fig. 4F ), ventral cavity nearly oblong, apical part nearly parallel-sided, slightly sinuate before apices, with a deep V-shaped notch at apex (Fig. 4D ). Distribution. China (Hainan). Remarks. We have provided a detailed description of the characteristics of antennomere III and male genitalia here.