New species and taxonomic notes on Lycocerus hickeri species-group (Coleoptera Cantharidae) Author Xi, Huacong 0000-0002-3612-2523 The Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, Hebei Province, China. Author Wang, Younan 0000-0001-6070-4892 The Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, Hebei Province, China. & wangyounan @ stumail. hbu. edu. cn; https: // orcid. org / 0000 - 0001 - 6070 - 4892 wangyounan@stumail.hbu.edu.cn Author Yang, Xingke Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. xihuacong 5253 @ 163. com; https: // orcid. org / 0000 - 0002 - 3612 - 2523 Author Liu, Haoyu 0000-0003-1383-5560 The Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, Hebei Province, China. & liuhy @ hbu. edu. cn; liuhy @ aliyun. com; https: // orcid. org / 0000 - 0003 - 1383 - 5560 liuhy@hbu.edu.cn Author Yang, Yuxia 0000-0002-3118-6659 The Key Laboratory of Zoological Systematics and Application, School of Life Science, Institute of Life Science and Green Development, Hebei University, Baoding 071002, Hebei Province, China. & yxyang @ hbu. edu. cn; https: // orcid. org / 0000 - 0002 - 3118 - 6659 yxyang@hbu.edu.cn text Zootaxa 2021 2021-06-02 4980 3 541 557 journal article 5943 10.11646/zootaxa.4980.3.5 e6e68116-fbef-4ce3-a454-ad98875b9fe4 1175-5326 4897200 E65004FA-DCD1-4123-96BA-B76729057133 Updated key to the species of Lycocerus hickeri species-group 1. Pro- and meso-outer tarsal claws each with a digitiform tooth at base in male...................................... 2 - All claws simple in male............................................................................... 4 2. Elytra more elongate, about 5.8 times as long as pronotum; aedeagus: dorsal plate of each paramere with inner margin arcuate.................................................................... L. longihirtus Y. Yang et X. Yang, 2014 - Elytra no more than 5.3 times as long as pronotum; aedeagus: dorsal plate of each paramere with inner margin bisinuate... 3 3. Pro- and meso-outer claws each with a tooth at base in female; aedeagus: ventral process of each paramere nearly straight in lateral view..................................................................... L. hickerimimus nom. nov. - Pro- and meso-outer and inner claws each with a tooth at base in female; aedeagus: ventral process of each paramere bent dorsally in lateral view................................................................ L. parahickeri nom. nov. 4. Elytra tapered at apices................................................................................. 5 - Elytra rounded at apices................................................................................ 6 5. Eyes moderately protruding in male; pronotum with anterior margin moderately rounded; elytra darkened only at basal halves of first elytral interstices; aedeagus: ventral process of each paramere nearly straight in lateral view, dorsal plate with inner margin roundly emarginate at apical half................................................... L. rufipennis sp. nov. - Eyes strongly protruding in male; pronotum with anterior margin strongly rounded; elytra darkened at all elytral interstices; aedeagus: ventral process of each paramere bent dorsally in lateral view, dorsal plate with inner margin nearly straight........................................................................................ L. acutiapicis sp. nov. 6. Antennae filiform or subfiliform, with middle antennomeres parallel-sided or feebly widened........................ 7 - Antennae with middle antennomeres dorso-ventrally flattened and obviously widened............................... 9 7. Pronotum with lateral margins slightly diverging posteriorly; elytra more elongate, about 4.0 times as long as humeral width................................................................... L. gracilicornis Y. Yang et X. Yang, 2014 - Pronotum with lateral margins moderately diverging posteriorly; elytra no more than 3.1 times as long as humeral width... 8 8. Pronotum nearly as long as wide; elytra with lateral margins nearly parallel, elytral venation weakly developed; aedeagus: dorsal plate of each paramere shorter than ventral process; female with accessory gland directly opening to spermatheca.................................................................................. L. nigrobilineatus Pic, 1916 - Pronotum wider than long; elytra with lateral margins diverging posteriorly, elytra venation strongly developed; aedeagus: dorsal plate of each paramere nearly as long as ventral process; female with basal portion of spermatheca extended into a short tube, where accessory gland opening.................................................... L. mainriensis sp. nov. 9. Elytra uniformly red, not darkened at elytral interstices........................................ L. hickeri Pic, 1934 - Elytra darkened at least at first and second elytral interstices.................................................. 10 10. Pronotum with a smaller black marking far from reaching margins; elytra darkened at first and second elytral interstices; aedeagus: dorsal plate of each paramere abruptly narrowed apically, outer apical angle protuberant and acute..................................................................................... L. napolovi Y. Yang et X. Yang, 2014 - Pronotum with a large black marking almost extending to margins; elytra darkened at all elytral interstices; aedeagus: dorsal plate of each paramere obliquely narrowed apically or nearly parallel-sided, outer apical angle feebly emarginate or rectangular................................................................................................ 11 11. Antennae extending to apical one-fourth length of elytra in male; pronotum hardly longer than wide; aedeagus: ventral process of each paramere nearly straight in lateral view; female with abdominal sternite VIII hardly emarginate in middle of posterior margin, spermatheca abruptly thinned apically............................. L. quadrilineatus Y. Yang et X. Yang, 2014 - Antennae almost reaching apices of elytra in male; pronotum longer, about 1.2 times as long as wide; aedeagus: ventral process of each paramere bent dorsally in lateral view; female with abdominal sternite VIII moderately deeply and roundly emarginate in middle of posterior margin, spermatheca gradually thinned apically........................ L. guangxiensis sp. nov.