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  25
21
humeral processi projected forwards  22

humeral processi transverse 24
22
smaller size, 4th antenna article longer than the 2nd by more than 25 %, female abdomen apex denticulation reduced
23

larger size, 4th antenna article longer than the 2nd by only about 5 %, female abdomen apex denticulation deep, bicolourous
rideri Magnien
23 smaller size, unicolorous
pluotae Magnien

larger size, bicolourous
raingeardi Magnien
24 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
25 anterior margin of pronotum concave
26

anterior margin of pronotum almost straight 27
26 head in front of the eye clearly longer than width of juga, tarsi triarticulate
haedulus Stål

head in front of the eye not longer than width of juga, tarsi biarticulate
berendi Magnien
27
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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