Polychornum tetrainum (Chen & Gong, 2021)

Chen, Xiang-Sheng & Gong, Nian, 2025, Taxonomic study of the Caliscelidae (Hemiptera: Fulgoromorpha: Fulgoroidea) from China, Zootaxa 5670 (1), pp. 1-129 : 92

Polychornum tetrainum (Chen & Gong, 2021)

( Figures 81 , 82A, B )

Augilina tetraina Gong, Yang & Chen, 2021a: 41 , combined by Gnezdilov, 2021b: 693.

Material examined. 3 ♂♂, China: Yunnan Province, Yingjiang County, Nabang Town ; 24°70’ N, 97°90’ E; 2015- VIII-18; Xiang-Sheng Chen and Lin Yang; on bamboo .

Host plant. Bamboo ( Figure 82C ).

Distribution. China (Yunnan Province).

Remarks. P. tetrainum (Chen & Gong, 2021) is similar to P. namboinum (Gnezdilov, 2013) , but differs in: 1) pygofer in lateral view, posterior margin with one finger-like process near dorsal margin (without in P. namboinum ); 2) aedeagus broadly concave posteriorly on apical half (almost straight in P. namboinum ); 3) pygofer in ventral view, posterior margin with two small medioventral processes (relatively large medioventral processes in P. namboinum ).

Figures

FIGURE 81. Polychornum tetrainum (Chen & Gong, 2021) A. Male habitus, dorsal view; B. Male habitus, lateral view; C. Head and thorax, dorsal view; D. Face; E. Head and thorax, lateral view; F. Forewing; G. Hindwing; H. Anal segment, dorsal view; I. Male genitalia, lateral view; J. Pygofer, posterior view; K. Genital styles, lateral view; L. Pygofer and genital styles, ventral view; M. Aedeagus, lateral view; N. Aedeagus, dorsal view. Scale bars: 1 mm (F, G); 0.5 mm (A–E); 0.3 mm (H-N).

FIGURE 82. Habitat of Polychornum tetrainum (Chen & Gong, 2021) A, B. Living male adult; C. General environment and host plant. 18 Aug. 2015, Nabang Town, Yingjiang County, Yunnan Province, photograph by Xiang-Sheng Chen.