Difference between revisions of "Key to Cerapachys of India"

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*''[[Cerapachys]]''
 
*''[[Cerapachys]]''
*[[India|Ants of India]]
+
*[[India|Ants of India]] (species list)
 +
*[[The Ants of India|India Regional Project page]]  
 
__NOTOC__
 
__NOTOC__
 
==1==
 
==1==
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==2==
 
==2==
 
return to [[#1 |couplet #1]]
 
return to [[#1 |couplet #1]]
*Larger species (HW 0.46–0.49 mm). Sculpture predominantly punctuate (Fig. 2A) . . . . . ''[[Cerapachys biroi]]''
+
*Larger species (HW 0.46–0.49 mm). Sculpture predominantly punctuate (Fig. 2A) . . . . . ''[[Ooceraea biroi]]''
 +
{|
 +
|[[File:Cerapachys biroi casent0055090 head 1.jpg|thumb|230px|''[[Ooceraea biroi]]'']]
 +
|[[File:Cerapachys biroi casent0055090 profile 1.jpg|thumb|220px]]
 +
|}
  
 
*Smaller species (HW 0.37–0.39 mm). Sculpture predominantly foveate (Fig. 2B) . . . . . ''[[Cerapachys alii]]''
 
*Smaller species (HW 0.37–0.39 mm). Sculpture predominantly foveate (Fig. 2B) . . . . . ''[[Cerapachys alii]]''
  
 
{|
 
{|
|[[File:Bharti and Akbar 2013 2.jpg|thumb|600px|Figure 2. A dorsal surface of ''[[Cerapachys biroi]]'' with conspicuous punctate sculpture B dorsal surface of ''[[Cerapachys alii]]'' with foveate sculpture.]]
+
|[[File:Bharti and Akbar 2013 2.jpg|thumb|500px|Figure 2. A dorsal surface of ''[[Ooceraea biroi]]'' with conspicuous punctate sculpture B dorsal surface of ''[[Cerapachys alii]]'' with foveate sculpture.]]
 
|}
 
|}
  
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return to [[#1 |couplet #1]]
 
return to [[#1 |couplet #1]]
 
*Antenna 11 segmented. . . . . ''[[Cerapachys besucheti]]''
 
*Antenna 11 segmented. . . . . ''[[Cerapachys besucheti]]''
 +
{|
 +
|[[File:Cerapachys besucheti casent0902721 h 1 high.jpg|thumb|250px|''[[Cerapachys besucheti]]'']]
 +
|[[File:Cerapachys besucheti casent0902721 p 1 high.jpg|thumb|230px]]
 +
|}
  
 
*Antenna 12 segmented <span style="background:#F5F5F5">[[#4|'''. . . . . 4''']]</span>
 
*Antenna 12 segmented <span style="background:#F5F5F5">[[#4|'''. . . . . 4''']]</span>
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{|
 
{|
 
|[[File:Bharti and Akbar 2013 3a.jpg|thumb|300px|Figure 3A. petiole of ''[[Cerapachys schoedli]]'' with dorsum rounding into sides without overhanging dorsolateral margins]]
 
|[[File:Bharti and Akbar 2013 3a.jpg|thumb|300px|Figure 3A. petiole of ''[[Cerapachys schoedli]]'' with dorsum rounding into sides without overhanging dorsolateral margins]]
|[[File:Bharti and Akbar 2013 3b.jpg|thumb|300px|Figure 3B. petiole of ''[[Cerapachys nayana]]'' with strong overhanging dorsolateral margins.]]
+
|[[File:Bharti and Akbar 2013 3b.jpg|thumb|280px|Figure 3B. petiole of ''[[Cerapachys nayana]]'' with strong overhanging dorsolateral margins.]]
 
|}
 
|}
  
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return to [[#4 |couplet #4]]
 
return to [[#4 |couplet #4]]
 
*Head brown, trunk red or brown, petiole and postpetiole light to dark reddish, gaster brown or black. Dorsal surface of body shiny, with widely scattered, indistinct punctures, throughout the body (Fig. 4A) . . . . . ''[[Cerapachys longitarsus]]''  
 
*Head brown, trunk red or brown, petiole and postpetiole light to dark reddish, gaster brown or black. Dorsal surface of body shiny, with widely scattered, indistinct punctures, throughout the body (Fig. 4A) . . . . . ''[[Cerapachys longitarsus]]''  
 +
{|
 +
|[[File:Cerapachys longitarsus casent0217388 h 1 high.jpg|thumb|250px|''[[Cerapachys longitarsus]]'']]
 +
|[[File:Cerapachys longitarsus casent0217388 p 1 high.jpg|thumb|220px|]]
 +
|}
  
 
*Head, trunk, petiole and postpetiole black coloured. Dorsal surface of body shiny, with widely scattered, indistinct punctures, mostly confined to postpetiole (Fig. 4B) . . . . . ''[[Cerapachys nayana]]''
 
*Head, trunk, petiole and postpetiole black coloured. Dorsal surface of body shiny, with widely scattered, indistinct punctures, mostly confined to postpetiole (Fig. 4B) . . . . . ''[[Cerapachys nayana]]''
 +
 +
{|
 +
|[[File:Bharti and Akbar 2013 4a.jpg|thumb|300px|Figure 4A. body of ''[[Cerapachys longitarsus]]'' in lateral view illustrating the characteristic bicolouration ]]
 +
|[[File:Bharti and Akbar 2013 4b.jpg|thumb|320px|Figure 4B. uniformly coloured body of ''[[Cerapachys nayana]]'' in lateral view.]]
 +
|}
  
 
==6==
 
==6==
 
return to [[#4 |couplet #4]]
 
return to [[#4 |couplet #4]]
 
*Dorsal surface of petiolar node with a smooth, median area (Fig. 5A) . . . . . ''[[Cerapachys sulcinodis]]''  
 
*Dorsal surface of petiolar node with a smooth, median area (Fig. 5A) . . . . . ''[[Cerapachys sulcinodis]]''  
 +
{|
 +
|[[File:Cerapachys sulcinodis casent0281976 h 1 high.jpg|thumb|250px|''[[Cerapachys sulcinodis]]'']]
 +
|[[File:Cerapachys sulcinodis casent0281976 p 1 high.jpg|thumb|230px]]
 +
|}
  
 
*Dorsal surface of petiolar node rounded and punctuate, without a differentiated median smooth area (Fig. 5B) <span style="background:#F5F5F5">[[#7|'''. . . . . 7''']]</span>
 
*Dorsal surface of petiolar node rounded and punctuate, without a differentiated median smooth area (Fig. 5B) <span style="background:#F5F5F5">[[#7|'''. . . . . 7''']]</span>
 +
 +
{|
 +
|[[File:Bharti and Akbar 2013 5a.jpg|thumb|200px|Figure 5A. petiolar node of ''[[Cerapachys sulcinodis]]'' with smooth median area ]]
 +
|[[File:Bharti and Akbar 2013 5b.jpg|thumb|250px|Figure 5B. petiolar node of ''[[Cerapachys wighti]]'' without any median smooth area.]]
 +
|}
  
 
==7==
 
==7==
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*Punctures on head dorsum large, foveiform, dense, their diameter as large, or larger than, the average distance separating them, and in some cases these are contiguous (Fig. 6B) <span style="background:#F5F5F5">[[#10|'''. . . . . 10''']]</span>
 
*Punctures on head dorsum large, foveiform, dense, their diameter as large, or larger than, the average distance separating them, and in some cases these are contiguous (Fig. 6B) <span style="background:#F5F5F5">[[#10|'''. . . . . 10''']]</span>
 +
 +
{|
 +
|[[File:Bharti and Akbar 2013 6a.jpg|thumb|170px|Figure 6A. cephalic dorsum of ''[[Cerapachys schoedli]]'' illustrating small punctures with diameter less than the average distance separating them]]
 +
|[[File:Bharti and Akbar 2013 6b.jpg|thumb|215px|Figure 6B. cephalic dorsum of ''[[Cerapachys wighti]]'' showing large punctures with diameter greater than space separating them]]
 +
|}
  
 
==8==
 
==8==
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*Declivity of propodeum with distinct cariniform margins, continuous across the dorsum; petiolar dorsum flat; colour other than black (Fig. 7A). <span style="background:#F5F5F5">[[#9|'''. . . . . 9''']]</span>
 
*Declivity of propodeum with distinct cariniform margins, continuous across the dorsum; petiolar dorsum flat; colour other than black (Fig. 7A). <span style="background:#F5F5F5">[[#9|'''. . . . . 9''']]</span>
  
*Declivity of propodeum without distinct cariniform margins, petiolar dorsum strongly convex; colour black (Fig. 7B) . . . . . ''[[Cerapachys anokha]]''  
+
*Declivity of propodeum without distinct cariniform margins, petiolar dorsum strongly convex; colour black (Fig. 7B) . . . . . ''[[Cerapachys anokha]]''
 +
 
 +
{|
 +
|[[File:Bharti and Akbar 2013 7.jpg|thumb|400px|Figure 7. A body profile of ''[[Cerapachys indicus]]'' in lateral view showing declivity of propodeum with distinct cariniform margins B body profile of ''[[Cerapachys anokha]]'' in lateral view with propodeal declivity lacking distinct cariniform margins.]]
 +
|}
  
 
==9==
 
==9==
 
return to [[#8 |couplet #8]]
 
return to [[#8 |couplet #8]]
 
*Shiny species; body sculpture reduced; eyes breaking the lateral margins of head; colour varies from light orange to dark red (Fig. 8A) . . . . . ''[[Cerapachys schoedli]]''  
 
*Shiny species; body sculpture reduced; eyes breaking the lateral margins of head; colour varies from light orange to dark red (Fig. 8A) . . . . . ''[[Cerapachys schoedli]]''  
 +
{|
 +
|[[File:Cerapachys schoedli 2.jpg|thumb|230px|''[[Cerapachys schoedli]]'']]
 +
|[[File:Cerapachys schoedli 1.jpg|thumb|250px|]]
 +
|}
  
*Dull coloured species; body sculpture prominent; eyes not breaking the lateral margins of head; colour brown to dark brown (Fig. 8B) . . . . . ''[[Cerapachys seema]]''  
+
*Dull coloured species; body sculpture prominent; eyes not breaking the lateral margins of head; colour brown to dark brown (Fig. 8B) . . . . . ''[[Cerapachys seema]]''
 +
{|
 +
|[[File:Bharti and Akbar 2013 9a.jpg|thumb|150px|Figure 8A. shining cephalic dorsum of ''[[Cerapachys schoedli]]'' with reduced sculpture and eyes not breaking the lateral margins of head ]]
 +
|[[File:Bharti and Akbar 2013 9b.jpg|thumb|140px|Figure 8B. dull cephalic dorsum of ''[[Cerapachys seema]]'' with prominent sculpture and eyes breaking the lateral margins of head.]]
 +
|}
  
 
==10==
 
==10==
 
return to [[#7 |couplet #7]]
 
return to [[#7 |couplet #7]]
 
*Eyes reduced (EL< 0.1mm; Fig. 9A) . . . . . ''[[Cerapachys wighti]]''
 
*Eyes reduced (EL< 0.1mm; Fig. 9A) . . . . . ''[[Cerapachys wighti]]''
 +
{|
 +
|[[File:Cerapachys wighti 3.jpg|thumb|230px|''[[Cerapachys wighti]]'']]
 +
|[[File:Cerapachys wighti 1.jpg|thumb|250px|]]
 +
|}
  
 
*Eyes large (EL >0.2mm; Fig. 9B) <span style="background:#F5F5F5">[[#11|'''. . . . . 11''']]</span>
 
*Eyes large (EL >0.2mm; Fig. 9B) <span style="background:#F5F5F5">[[#11|'''. . . . . 11''']]</span>
 +
{|
 +
|[[File:Bharti and Akbar 2013 9a.jpg|thumb|160px|Figure 9A. head of ''[[Cerapachys wighti]]'' in lateral view illustrating smaller eyes]]
 +
|[[File:Bharti and Akbar 2013 9b.jpg|thumb|140px|Figure 9B head of ''[[Cerapachys aitkenii]]'' in lateral view illustrating larger eyes.]]
 +
|}
  
 
==11==
 
==11==
 
return to [[#10 |couplet #10]]
 
return to [[#10 |couplet #10]]
 
*Head reddish brown or red; trunk and both nodes red; gaster black or dark brown; dorsal surface of mesosoma densely and finely sculptured; foveate or rugo-reticulate (Fig. 10A) . . . . . ''[[Cerapachys aitkenii]]''  
 
*Head reddish brown or red; trunk and both nodes red; gaster black or dark brown; dorsal surface of mesosoma densely and finely sculptured; foveate or rugo-reticulate (Fig. 10A) . . . . . ''[[Cerapachys aitkenii]]''  
 +
{|
 +
|[[File:Cerapachys aitkenii casent0907048 h 1 high.jpg|thumb|230px|''[[Cerapachys aitkenii]]'']]
 +
|[[File:Cerapachys aitkenii casent0907048 p 1 high.jpg|thumb|250px]]
 +
|}
  
 
*Body unicolorous, lighter brownish red; dorsal surface of mesosoma mostly smooth with few scattered punctures along sides (Fig. 10B) . . . . . ''[[Cerapachys indicus]]''  
 
*Body unicolorous, lighter brownish red; dorsal surface of mesosoma mostly smooth with few scattered punctures along sides (Fig. 10B) . . . . . ''[[Cerapachys indicus]]''  
  
[[Category:Identification key|Cerapachys]][[Category:Cerapachys]][[Category:India]]
+
{|
 +
|[[File:Bharti and Akbar 2013 10.jpg|thumb|400px|Figures 10. A body profile of ''[[Cerapachys aitkenii]]'' in lateral view illustrating the characteristic bicolouration and prominent foveate sculpture B body profile of ''[[Cerapachys indicus]]'' in lateral view illustrating unicolorous body colouration and with reduced punctuate sculpture.]]
 +
|[[File:Cerapachys indicus casent0217387 h 1 high.jpg|thumb|230px|''[[Cerapachys indicus]]'']]
 +
|[[File:Cerapachys indicus casent0217387 p 1 high.jpg|thumb|250px]]
 +
|}
 +
 
 +
[[Category:Identification key|Cerapachys]][[Category:Cerapachys]][[category:Indian species identification key|Cerapachys]]

Latest revision as of 19:38, 26 July 2019

This worker key is based on: Bharti H, Ali Akbar S. 2013b. Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79–103. doi: 10.3897/zookeys.336.5719 PDF

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1

2

return to couplet #1

  • Larger species (HW 0.46–0.49 mm). Sculpture predominantly punctuate (Fig. 2A) . . . . . Ooceraea biroi
Cerapachys biroi casent0055090 profile 1.jpg
  • Smaller species (HW 0.37–0.39 mm). Sculpture predominantly foveate (Fig. 2B) . . . . . Cerapachys alii
Figure 2. A dorsal surface of Ooceraea biroi with conspicuous punctate sculpture B dorsal surface of Cerapachys alii with foveate sculpture.

3

return to couplet #1

Cerapachys besucheti casent0902721 p 1 high.jpg

4

return to couplet #3

  • Petiole with dorsum rounding into sides; dorsolateral margins absent or vestigial (Fig. 3A) . . . . . 6
  • Petiole with strong overhanging dorsolateral margins (Fig. 3B) . . . . . 5
Figure 3A. petiole of Cerapachys schoedli with dorsum rounding into sides without overhanging dorsolateral margins
Figure 3B. petiole of Cerapachys nayana with strong overhanging dorsolateral margins.

5

return to couplet #4

  • Head brown, trunk red or brown, petiole and postpetiole light to dark reddish, gaster brown or black. Dorsal surface of body shiny, with widely scattered, indistinct punctures, throughout the body (Fig. 4A) . . . . . Cerapachys longitarsus
Cerapachys longitarsus casent0217388 p 1 high.jpg
  • Head, trunk, petiole and postpetiole black coloured. Dorsal surface of body shiny, with widely scattered, indistinct punctures, mostly confined to postpetiole (Fig. 4B) . . . . . Cerapachys nayana
Figure 4A. body of Cerapachys longitarsus in lateral view illustrating the characteristic bicolouration
Figure 4B. uniformly coloured body of Cerapachys nayana in lateral view.

6

return to couplet #4

Cerapachys sulcinodis casent0281976 p 1 high.jpg
  • Dorsal surface of petiolar node rounded and punctuate, without a differentiated median smooth area (Fig. 5B) . . . . . 7
Figure 5A. petiolar node of Cerapachys sulcinodis with smooth median area
Figure 5B. petiolar node of Cerapachys wighti without any median smooth area.

7

return to couplet #6

  • Punctures on dorsum of head relatively small, their diameter smaller than the

average distance separating them (Fig. 6A) . . . . . 8

  • Punctures on head dorsum large, foveiform, dense, their diameter as large, or larger than, the average distance separating them, and in some cases these are contiguous (Fig. 6B) . . . . . 10
Figure 6A. cephalic dorsum of Cerapachys schoedli illustrating small punctures with diameter less than the average distance separating them
Figure 6B. cephalic dorsum of Cerapachys wighti showing large punctures with diameter greater than space separating them

8

return to couplet #7

  • Declivity of propodeum with distinct cariniform margins, continuous across the dorsum; petiolar dorsum flat; colour other than black (Fig. 7A). . . . . . 9
  • Declivity of propodeum without distinct cariniform margins, petiolar dorsum strongly convex; colour black (Fig. 7B) . . . . . Cerapachys anokha
Figure 7. A body profile of Cerapachys indicus in lateral view showing declivity of propodeum with distinct cariniform margins B body profile of Cerapachys anokha in lateral view with propodeal declivity lacking distinct cariniform margins.

9

return to couplet #8

  • Shiny species; body sculpture reduced; eyes breaking the lateral margins of head; colour varies from light orange to dark red (Fig. 8A) . . . . . Cerapachys schoedli
Cerapachys schoedli 1.jpg
  • Dull coloured species; body sculpture prominent; eyes not breaking the lateral margins of head; colour brown to dark brown (Fig. 8B) . . . . . Cerapachys seema
Figure 8A. shining cephalic dorsum of Cerapachys schoedli with reduced sculpture and eyes not breaking the lateral margins of head
Figure 8B. dull cephalic dorsum of Cerapachys seema with prominent sculpture and eyes breaking the lateral margins of head.

10

return to couplet #7

Cerapachys wighti 1.jpg
Figure 9A. head of Cerapachys wighti in lateral view illustrating smaller eyes
Figure 9B head of Cerapachys aitkenii in lateral view illustrating larger eyes.

11

return to couplet #10

  • Head reddish brown or red; trunk and both nodes red; gaster black or dark brown; dorsal surface of mesosoma densely and finely sculptured; foveate or rugo-reticulate (Fig. 10A) . . . . . Cerapachys aitkenii
Cerapachys aitkenii casent0907048 p 1 high.jpg
  • Body unicolorous, lighter brownish red; dorsal surface of mesosoma mostly smooth with few scattered punctures along sides (Fig. 10B) . . . . . Cerapachys indicus
Figures 10. A body profile of Cerapachys aitkenii in lateral view illustrating the characteristic bicolouration and prominent foveate sculpture B body profile of Cerapachys indicus in lateral view illustrating unicolorous body colouration and with reduced punctuate sculpture.
Cerapachys indicus casent0217387 p 1 high.jpg