Figure 4. a–d in The second Mecistocephalus centipede without a spiculum: Mecistocephalus aspiculus sp. n. from south China (Chilopoda: Geophilomorpha: Mecistocephalidae)

Figure 4. a–d, Mecistocephalus aspiculus sp. n. (CMMI-20201217113): a, cephalic capsule, dorsal; b, clypeus, labrum and anterior part of cephalic pleurite, ventral, cephalic pleurite uncovered; c, stilus of the right cephalic pleurite, ventral; d, ultimate leg-bearing segment and postpedal segments, ventral; e, Mecistocephalus guildingii Newport, 1843, from Beihai, Guangxi (CMMI-20201122102): labrum, ventral; f, Mecistocephalus guildingii Newport, 1843 from Honghe, Yunnan (CMMI-20190123001): labrum, ventral; g, Mecistocephalus multidentatus Takakuwa, 1936, from Qingyuan, Guangdong (CMMI-20240123002): labrum, ventral; h, Mecistocephalus smithii Pocock, 1895, from Guangzhou, Guangdong (CMMI-20191014031): labrum, ventral. Scale bars: a–d = 250 μm; e, f = 50 μm; g, h = 150 μm.