Table 2 in The first fossil spider cricket (Orthoptera: Gryllidae: Phalangopsinae): 20 million years of troglobiomorphosis or exaptation in the dark?

Table 2. Explanation of the synapomorphies in Fig. 4 1.C-sclerites located at the apex of the epiphallic arm(B-sclerite without any particular development),from which they are distinctly separate.2.Endophallic apodeme without mediodorsal crestbetween endophallic sclerite and apex of ectophallicfold.3.Ectophallic arc extended above ectophallic fold, andprotruding beyond it.4.Male metanotal gland globose.5.Epiphallic sclerite with visor-like median projection.6.Epiphallic parameres 1 and 2, large, spine-like.7.Mesotibia with two apical spurs.8.Median inner apical spur of metatibia longer thandorsal apical spur.9.C-sclerite reduced, forming a soft, quadrangularlobe.10.Ectophallic apodemes large and robust, with anabutment that supports the epiphallic sclerite.11.Lateral lamina of endophallic apodeme markedlyelongate.12.Epiphallic–ectophallic membrane with pair ofnon-glandular invaginations.13.Epiphallic paramere 2 elongate, bordering the entiredorsal surface of the epiphallic arm.14.Membrane separating the A-sclerite from theepiphallic parameres inflated, displacing theA-sclerite posteriad of the basal plate of theC-sclerite.15.Metafemora very thin, even basally.16.C-sclerite differentiated and complex, comprising along, thin plate, a lateral spine or notch, and amore or less developed ventral pouch.17.C-sclerite vertically articulated with epiphallic arm.18.Invaginations of epiphallic–ectophallic membranedeveloped into two large glands.19.Membrane between A-sclerite and epiphallicparameres greatly developed, altering the entireshape of the epiphallic arm.20.C-sclerite with a large glandular system formed bythe ventral pouch and the lateral spine, located onthe outer face of the epiphallic arm.表2. 图4中共同衍征（synapomorphies）的说明 1. C-骨片（C-sclerites）位于阳茎端臂（epiphallic arm）的顶端，B-骨片（B-sclerite）无特殊发育，且C-骨片与阳茎端臂明显分离 2. 内阳茎突（endophallic apodeme）在内阳茎骨片（endophallic sclerite）与外阳茎褶（ectophallic fold）顶端之间无中背脊（mediodorsal crest） 3. 外阳茎弧（ectophallic arc）延伸至外阳茎褶上方，并超出该褶的末端 4. 雄虫后胸腺（male metanotal gland）呈球状 5. 阳茎端骨片（epiphallic sclerite）具面罩状中突 6. 阳茎侧突1与阳茎侧突2（epiphallic parameres 1 and 2）粗大，呈棘状 7. 中胫节（mesotibia）具2个端距 8. 后胫节（metatibia）的内侧中端距长于背端距 9. C-骨片退化，形成柔软的四边形叶 10. 外阳茎突（ectophallic apodemes）粗大强健，具支撑阳茎端骨片的抵止结构 11. 内阳茎突侧片（lateral lamina of endophallic apodeme）显著伸长 12. 阳茎端-外阳茎膜（epiphallic–ectophallic membrane）具一对非腺体内陷 13. 阳茎侧突2伸长，包绕阳茎端臂的整个背侧表面 14. 分隔A-骨片（A-sclerite）与阳茎侧突的膜膨大，将A-骨片推至C-骨片基板的后方 15. 后足股节（metafemora）极纤细，即使在基部亦如此 16. C-骨片分化且结构复杂，由细长薄板、侧棘或切迹，以及或多或少发育的腹囊（ventral pouch）组成 17. C-骨片与阳茎端臂垂直关节连接 18. 阳茎端-外阳茎膜的内陷发育为两个大型腺体 19. 分隔A-骨片与阳茎侧突的膜极度发达，改变了阳茎端臂的整体形态 20. C-骨片具由腹囊与侧棘构成的大型腺系统，位于阳茎端臂的外侧面