Table 4.

Selected nymphal characters of known species of the genus Polyplocia.

Characters		P.orientalis Nguyen & Bae, 2003	P.nebulosa Gonçalves & Peters, 2016	P.campylociella Ulmer, 1939
Head	antenna length vs. tusk length	longer	longer	slightly longer
Labrum	anterior margin	medially slightly concave with shallow emargination	medially concave with shallow emargination	medially concave (from fig. 1b)
Mandibular tusks	length of tusks vs. length of head	2×–3×	2×	?
	inward curvature	18.6°–21.3°	20.7° (in this study)	?
	number of spines	3–12	8–9 (fig. 18 Gonçalves and Peters 2016; this study)	?
	presence of large spines	Apical 1/3	Apical 1/2	Apical 1/3 (Jacobus et al. 2019)
Legs	length of apical spine of the foretibiae vs. length of the foretarsi	1/3–1/4	less than 1/2, 1/3 (in this study)	?
Abdomen	sterna	whitish	a pair of anterolateral black marks	a pair of anterolateral black marks
Winged stage	associated	yes	possible nymph	possible nymph
	eggs shape (subimago)	oval; barrel	barrel	?
	eggs length vs. width	1.3×	1.6×	?
	number of micropores	2	1	?
Distribution		Vietnam, China, Northern Thailand	Borneo, Malaysia, Western Thailand	Borneo, Malaysia
References		Nguyen and Bae (2003a); Zheng et al. (2023); this study	Gonçalves and Peters (2016); this study	Demoulin (1966)