Pygoplatys Dallas, 1851

Key to species :

1	external margin of juga straight or slightly sinuous, with no anteocular tooth nor acute angle at basis Pygoplatys (s.str.)	2
	external magin of juga strongly concave, generally leaving the antenniferous tubercle visible from above, with an anteocular tooth or at least an acute angle at basis Pygoplatys (Odontoteuchus)	20
	sub-genus Pygoplatys
2	no humeral processi, at most the humeral angle slightly protruding	3
	humeral processi present, more or less developped	4
3	humeral angle acute, abdomen and pronotum of the same width, species known from Moluccas Islands	subrugosus Vollenhoven
	humeral angle rounded, pronotum wider than abdomen, species known from Thailand and Laos	auropunctatus Blöte
4	humeral processi well developped, with acute apex	5
	humeral processi well developped, with truncated apex	13
5	forewing reddish brown, lighter hue of veins contrasting with the background	6
	forewing showing no particular contrast between vein an background	8
6	humeral processi projected forwards, nearly reaching the level of the apex of the head	lunatus Distant
	humeral processi transverse, not projected forwards	7
7	pronotum about two times wider than abdomen	lancifer Walker
	pronotum about one and a half time wider than abdomen	zonatus Stål (forticornis Walker)
8	humeral processi transverse	9
	humeral processi projected forwards	10
9	humeral processi less important, ratio of the habitus length versus pronotum width about 3/2	ingenuus (Walker)
	humeral processi more important, ratio of the habitus length versus pronotum width about 4/3	bovillus Stål
10	humeral processi less important, with a metallic green tinge on the rear part	shelfordi Distant
	humeral processi more important, no metallic tinge on the rear part	11
11	humeral processi projected forwards, surpassing head anteriorly	tauriformis Distant
	humeral processi less projected forwards, not reaching fore margin of pronotum	12
12	abdomen margins parallel, abdomen about as wide as maximum width of forewings, pygophore of males clearly surpassing posterior margin of segment VII	firmatus (Walker)
	abdomen margins convex, abdomen somewhat wider than maximum width of forewings, pygophore of males not reaching posterior margin of segment VII	acutus Dallas
13	apex of humeral processi blunt	14
	apex of humeral processi with at least one clear angle	15
14	pronotum width surpassing abdomen width by one third, veins concolorous with the background	montanus Distant
	pronotum width surpassing abdomen width by less than one fourth, lighter hue of veins contrasting with the background	obtusus Blöte
15	humeral processi margins converging, truncature oblique	minax Vollenhoven (ralandii Ellenreider)
	humeral processi margins parallel, truncature right	16
16	width of pronotum almost equal to lenght of habitus, known only by the type female	merinjakensis Distant
	length of habitus greater than width of pronotum, at least by 15 %	17
17	length of antenna more than 0.55 times pronotum width	jordii Magnien
	length of antenna less than half of pronotum width	18
18	lighter transverse stripe of pronotum includes callosities	tenangau Magnien & al.
	lighter transverse stripe of pronotum is behind the callosities	19
19	medium size (about 20 mm), lighter hue of veins contrasting with the background (only known by the male type)	kerzhneri Magnien
	larger size (about 30 mm), veins quasi concolorous	validus Dallas
	sub-genus Odontoteuchus
20	humeral processi present, more or less developped	21
	no real humeral processus, pronotum angular	24
21	humeral processi projected forwards	22
	humeral processi transverse	23
22	smaller size, 4th antenna article longer than the 2nd by more than 25 %, female abdomen apex denticulation reduced, unicolorous	pluotae Magnien
	larger size, 4th antenna article longer than the 2nd by only about 5 %, female abdomen apex denticulation deep, bicolourous	rideri Magnien
23	head in front of the eye clearly longer than width of juga	longiceps Stål
	head in front of the eye shorter than width of juga	thoreyi Dohrn
24	anterior margin of pronotum concave	25
	anterior margin of pronotum almost straight	26
25	head in front of the eye clearly longer than width of juga	haedulus Stål
	head in front of the eye not longer than width of juga	berendi Magnien
26	second antenna segment 0.9 as long as diatone, humeral angle of pronotum very acute	celebensis Breddin
	second antenna segment shorter than diatone by one third, humeral angle of pronotum almost right	rosulentus Stål

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