Key to Myrmica of China

This worker key is based on: Wei, C. Zhou, S. He, H. ; Liu, M. 2001. A taxonomic study of the genus Myrmica Latreille from China. (Hymenoptera: Formicidae). Acta Zootaxonomica Sinica 26:560-564.

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 * Ants of China
 * Myrmica

1

 * Antennal scape without any lamella and carina extension at base . . . . . 2


 * Antennal scape with lamella or carina extension at the base . . . . . 5

2

 * Antennal scape abruptly curved near the base. Frontal triangle with striae at upper portion, and lower portion smooth . . . . . Myrmica gallienii


 * Antennal scape gently curved near the base. Frontal triangle entirely smooth and shining . . . . . 3

3

 * Body (excluding gaster) with coarsely reticulated rugae. Propodeal spines long, exceeding 0.5 mm. Gaster dominantly brownish yellow, lighter than the colour of head and alitrunk . . . . . Myrmica margaritae


 * Rugae of body not coarse; head and alitrunk with regular longitudinal rugae; rugae on occipital corner and nodes indistinct or distinctly decreased. Propodeal spines short, not exceeding 0.4 mm. Gaster concolourous with the rest of body . . . . . 4

4

 * Propodeal spines long, as long as or longer than the width between their base . . . . . Myrmica ruginodis


 * Propodeal spines short, distinctly shorter than the width between their base . . . . . Myrmica rubra

5

 * Antennal scape with distinct lamella extension at base . . . . . 6


 * Antennal scape without lamella extension at base . . . . . 7

6

 * Lamella of antennal scape large and upright with the antennal socket al revealed. Propodeal spines long, exceeding 0.3 mm . . . . . Myrmica lobicornis


 * Lamella of antennal scape very small but overlapping the antennal socket; half of antennal socket revealed. Propodeal spines short, not exceeding 0.25 mm . . . . . Myrmica jessensis

7

 * Rugae of pronotum irregular; rest of dorsum of alitrunk with transverse rugae . . . . . 8


 * Rugae of alitrunk longitudinal . . . . . 9

8

 * Mandible with 8 teeth, the 2 apical teeth longer than the others. Propodeal spines curved downwards and projected out backwards . Colour of alitrunk lighter than that of head and gaster . . . . . Myrmica taibaiensis


 * Mandible with 9 teeth, the 4 apical teeth longer than the others. Propodeal spines somewhat upright. Alitrunk concolourous with head and gaster . . . . . Myrmica inezae

9

 * Alitrunk and nodes with conspicuously coarse longitudinal rugae. First node clearly longer than broad in dorsal view . . . . . Myrmica sulcinodis


 * Rugate of alitrunk and nodes not as coarse as above and somewhat reticulated. First node about as long as broad or broader than long in dorsal view . . . . . 10

10

 * First node nearly triangular with a narrow dorsal face in profile view; the node conspicuously broader than long in dorsal view. Propodeal spines clearly curved inwards and somewhat upright . . . . . Myrmica angulinodis


 * First nodes nearly trapezoid and with a broad dorsal area, the node about as long as broad in dorsal view. Propodeal spines projected out backwards and not curved inwards . . . . . Myrmica sinica