Changminia Yao & Li, 2022
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publication ID |
https://doi.org/ 10.11646/zootaxa.5092.2.6 |
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publication LSID |
lsid:zoobank.org:pub:7FC04364-0793-4F24-A021-D170675E18C4 |
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DOI |
https://doi.org/10.5281/zenodo.5876678 |
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persistent identifier |
https://treatment.plazi.org/id/03DE87E9-7B73-1961-00A0-FF6BFB39FA8F |
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treatment provided by |
Plazi |
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scientific name |
Changminia Yao & Li |
| status |
gen. nov. |
Genus Changminia Yao & Li View in CoL View at ENA gen. nov.
Type species: Holocneminus huangdi Tong & Li, 2009 View in CoL .
Etymology. The generic name is dedicated to the late Chinese arachnologist Changmin Yin. Gender is feminine.
Diagnosis. This genus can be easily distinguished from Holocneminus Berland, 1942 and Physocyclus Simon, 1893 by the wide procursus in dorsal view (wider than Holocneminus and Physocyclus ; Figs 2D View FIGURE 2 , 4D View FIGURE 4 ), procursus with sclerotized prolatero-subdistal apophysis (arrow in Fig. 2C View FIGURE 2 , arrow 1 in Fig. 4C View FIGURE 4 ; absent in Holocneminus and Physocyclus ), by embolus semi-transparent ( Figs 2A View FIGURE 2 , 5D View FIGURE 5 ; sclerotized in Holocneminus and Physocyclus ), and by vulval pore plates not seen ( Figs 3B View FIGURE 3 , 5C View FIGURE 5 ; with pair of distinct vulval pore plates in Holocneminus and Physocyclus ); also distinguished from Physocyclus by external female genitalia without ventral apophyses on anterior part or lateral constraints in middle part (present in Physocyclus ) and by vulval anterior arch without sclerotized projections on anterior part (present in Physocyclus ).
Description. Male: Total length 1.92–1.96 (2.04–2.20 with clypeus). Ocular triads relatively close together, distance PME-PME 0.10, diameter PME 0.09–0.10, distance PME-ALE 0.03, distance AME-AME 0.02, diameter AME 0.03–0.04. Sternum wider than long. Carapace with brownish radiating/Y-shaped marks; clypeus with brownish marks; sternum brownish/yellowish ( Figs 3E–F View FIGURE 3 , 5G–H View FIGURE 5 ). Legs with slightly darker rings on distal parts of femora and tibiae. Opisthosoma globose, with brown dorsal and lateral spots ( Figs 3E–F View FIGURE 3 , 5G–H View FIGURE 5 ). Ocular area elevated and separated from rest of carapace. Thoracic furrow shallow but distinct ( Figs 3E–F View FIGURE 3 , 5G–H View FIGURE 5 ). Chelicerae ( Figs 3C–D View FIGURE 3 , 5E–F View FIGURE 5 ) with pair of proximo-lateral apophyses (pa in Figs 3C–D View FIGURE 3 , 5E–F View FIGURE 5 ) with stridulatory ridges, pair of distal apophyses with several sclerotized cones each (da in Fig. 5E View FIGURE 5 )/cone-shaped distal apophyses (da in Fig. 3C View FIGURE 3 ), and pair of frontal apophyses with sclerotized cones each (fa in Figs 5E–F View FIGURE 5 ; absent in C. huangdi ). Pedipalpal coxa unmodified; trochanter with retrolateral apophysis; femur conspicuously enlarged and dorsally strongly curved, with proximo-retrolateral protrusion ( Figs 2A–B View FIGURE 2 , 4A–B View FIGURE 4 ); procursus curved, with prolatero-subdistal apophysis (arrow in Fig. 2C View FIGURE 2 , arrow 1 in Fig. 4C View FIGURE 4 ); bulb simple, no other projections except for semi-transparent embolus ( Figs 2A View FIGURE 2 , 5D View FIGURE 5 ). Leg formula 1>4>2>3; legs with short vertical setae on tibiae, metatarsi and tarsi, without spines or curved setae; tarsus I with>6 distinct pseudosegments.
Female: Similar to male, sexual dimorphism very slight. Chelicerae unmodified. External female genitalia brown, with median apophysis (ma in Figs 3A View FIGURE 3 , 5A–C View FIGURE 5 ). Vulva with membranous anterior arch and nearly n-shaped sclerite (arrow in Figs 3B View FIGURE 3 , 5C View FIGURE 5 ), pore plates not seen.
Natural history. Unknown, except the species were collected in the aphotic zone inside the cave.
Distribution. China (Hainan, Fig. 1 View FIGURE 1 ), Thailand (Prachuap Kiri Khan, Fig. 1 View FIGURE 1 ).
Composition. C. huangdi ( Tong & Li, 2009) comb. nov. and C. dao Yao & Li sp. nov.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.