Key to Dolichoderus of China

This worker key is based on: [[Media:Xu 2001b.pdf| Xu, Z. 2001b. Two new species of the ant genus Dolichoderus Lund from Yunnan, China. Acta Zootaxonomica Sinica. 26:355-360.]]

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Dolichoderus

1



 * Head and thorax foveolate . . . . . 2


 * Head punctured or smooth, not foveolate . . . . . 3

2
return to couplet #1
 * Dorsa of thorax and gaster without standing hairs. In dorsal view posterior margin of propodeum concave. Head reddish brown or black. The basal two segments of gaster each with a pair of yellowish spots (Figs.1-3) (China: Xinjiang, Anhui, Hubei, Hunan, Zhejiang, Jiangxi, Fujian, Guangxi, Guangdong, Hong Kong; Japan; Korea; Russia) . . . . . Dolichoderus sibiricus


 * Dorsa of thorax and gaster with standing hairs. In dorsal view posterior margin of propodeum weakly convex. Head reddish brown. The basal two segments of gaster each without a pair of yellowish spots (Figs. 4-6) (China: Yunnan) . . . . . Dolichoderus sagmanotus

3
return to couplet #1
 * Dorsa of thorax and gaster without standing hairs. Posterior margin of propodeum deeply notched. Head and thorax with fine and dense punctures. Body black or blackish brown (Figs. 7-9) (China: Yunnan; Myanmar) . . . . . Dolichoderus feae


 * Dorsa of thorax and gaster with standing hairs. Posterior margin of propodeum straight or convex . . . . . 4

4
return to couplet #3
 * Head and pronotum smooth and shining. Body bicolor, head and thorax yellowish brown to reddish brown, gaster black (Figs. 10-12) (China: Yunnan, Hunan, Zhejiang, Fujian, Guangxi, Guangdong, Hainan, Hong Kong, Macau; India; Sri Lanka; Myanmar; Laos; Vietnam; Indonesia) . . . . . Dolichoderus taprobanae


 * Head punctured or smooth, pronotum punctured or rugose . . . . . 5

5
return to couplet #4
 * Body distinctly bicolor, thorax reddish brown or brownish red, gaster black . . . . . 6


 * Body distinctly unicolor, usually black, sometimes brownish black . . . . . 7

6
return to couplet #5
 * Promesonotal suture distinct but not depressed. In profile view dorsum of propodeum flat. Head black and moderately reticulate (Figs. 25-26) (China: Guangxi) . . . . . Dolichoderus flatidorsus


 * Promesonotal suture quite distinct and depressed. In profile view dorsum of propodeum convex. Head brownish red and coarsely reticulate (Figs. 27-28) (China: Guangxi) . . . . . Dolichoderus pilosus

7
return to couplet #5
 * Pronotum densely punctured . . . . . 8


 * Pronotum longitudinally rugose . . . . . 9

8
return to couplet #7
 * Head weakly and finely punctured, relatively shining. In profile view posterodorsal comer of propodeum weakly protruding (Figs. 13-15) (China: Yunnan, Guangxi, Guangdong; Sikkim; Myanmar; Thailand) . . . . . Dolichoderus affinis


 * Head coarsely and densely punctured, dim. In profile view posterodorsal comer of propodeum strongly protruding (Figs. 16-18) (China: Yunnan) . . . . . Dolichoderus incisus

9
return to couplet #7
 * Head and thorax densely and finely rugulose and punctured, dim. In profile view propodeum not elevated, dorsum convex (Figs. 19-21) (China: Yunnan, Guangxi, Guangdong, Fujian, Taiwan; Sikkim; India; Myanmar; Laos; Vietnam; Cambodia; Philippines; Malaysia; New Guinea; Australia) . . . . . Dolichoderus thoracicus


 * Head weakly and finely punctured or smooth, relatively shining or shining. Thorax densely foveolate, interface formed coarse ruga-reticulation, dim. In profile view propodeum elevated and formed a horizontal plane, almost as high as pronotum, dorsum straight (Figs. 22-24) (China: Yunnan) . . . . . Dolichoderus squamanodus