Key to Oriental Myopias species

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This worker key is based on: Xu, Z., Burwell, C.J. & Nakamura, A. 2014. A new species of the ponerine ant genus Myopias Roger from Yunnan, China, with a key to the known Oriental species. Sociobiology 61, 164-170.

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Myopias

1

  • In full-face view, clypeus without protruding median lobe . . . . . 2
  • In full-face view, clypeus with protruding median lobe . . . . . 3

2

return to couplet #1

  • In full-face view posterior head margin straight. The first tooth of mandible counting from base located at midpoint of mandible, not hooked. Metanotal groove absent. Dorsal margin of petiolar node horizontal. The whole body surface largely sparsely punctured. Body color reddish brown (Sri Lanka) . . . . . Myopias amblyops
Myopias amblyops casent0104584 profile 1.jpg
  • In full-face view posterior head margin weakly convex. The first tooth of mandible counting from base located before midpoint of mandible, weakly hooked. Metanotal groove deeply impressed. Dorsal margin of petiolar node descends anteriorly. The whole body surface longitudinally and somewhat irregularly rugose, vertex and cheeks of head, and pronotum largely sparsely punctured. Body color blackish brown (Philippines) . . . . . Myopias lobosa
Myopias lobosa casent0902528 p 1 high.jpg

3

return to couplet #1

  • In dorsal view mandible strongly elongate and roughly linear, masticatory margin divided into a long basal portion and a short apical portion; basal portion with a large tooth, about 2 or 3 times as long as the apical portion; apical portion obliquely truncate, with 1 or 2 basal teeth and an apical tooth . . . . . 4
  • In dorsal view, mandible weakly elongate and roughly triangular, masticatory margin not divided into two portions, with a large basal tooth, a large middle tooth, and 1 or 2 small apical teeth . . . . . 7

4

return to couplet #3

  • In full-face view, median clypeal lobe roughly rectangular, anteriorly as broad as posteriorly, lateral margins parallel or nearly parallel, anterior margin deeply or moderately concave . . . . . 5
  • In full-face view, median clypeal lobe roughly trapezoidal, widened anteriorly, anterior margin slightly concave, straight or slightly convex . . . . . 6

5

return to couplet #4

  • Median clypeal lobe longer than broad. Basal portion of masticatory margin of mandible with a short blunt tooth. In dorsal view petiolar node as broad as long, lateral margins parallel. The whole body surface sparsely coarsely punctured; mesonotum, propodeum and petiole longitudinally striate (Philippines) . . . . . Myopias philippinensis
Myopias-philippinensisL3.2x.jpg
  • Median clypeal lobe broader than long. Basal portion of masticatory margin of mandible with a long acute tooth. In dorsal view petiolar node longer than broad, narrowed anteriorly. The whole body surface smooth and shining (Philippines, Indonesia) . . . . . Myopias bidens
Myopias bidens casent0903924 p 1 high.jpg

6

return to couplet #4

  • In full-face view apices of scapes reach or slightly surpass posterior head corners. In lateral view ventral margin of subpetiolar process nearly straight posterior to anteroventral tooth. In dorsal view petiolar node about as broad as long. Sides of petiole and gaster sparsely punctured or smooth (China: Yunnan) . . . . . Myopias conicara
Xu Burwell & Nakamura 2014-5Myopias-conicara hal.jpg
  • In full-face view apices of scapes not reaching posterior head corners. In lateral view ventral margin of subpetiolar process evenly convex posterior to anteroventral tooth. In dorsal view petiolar node broader than long. Sides of petiole and gaster largely abundantly punctured (China: Yunnan) . . . . . Myopias hania
Xu Burwell & Nakamura 2014-6Myopias-hania hal.jpg

7

return to couplet #3

  • In lateral view petiolar node roughly trapezoidal, distinctly narrowed dorsally, posterodorsal corner rounded, without distinct angle. Eyes absent or very small, with less than three facets . . . . . 8
  • In lateral view petiolar node roughly rectangular, slightly or not narrowed dorsally, posterodorsal corner bluntly angled, with distinct angle. Eyes larger, with more than nine facets . . . . . 10

8

return to couplet #7

  • In full-face view posterior head margin strongly angularly concave. In lateral view dorsal margin of petiolar node weakly convex (India) . . . . . Myopias shivalikensis
Myopias shivalikensis antweb1008035 p 1 high.jpg
  • In full-face view posterior head margin straight. In lateral view dorsal margin of petiolar node straight . . . . . 9

9

return to couplet #8

  • In full-face view apex of scape almost reaching posterior head corner. Eyes absent. In lateral view subpetiolar process ventrally pointed. In dorsal view, petiolar node distinctly broader than long. Head, mesosoma and petiole finely retirugose. (China: Taiwan) . . . . . Myopias nops
Myopias nops casent0902527 p 1 high.jpg
  • In full-face view apex of scape fails to reach posterior head corner by apical scape width. Eyes present, with 2 facets. In lateral view subpetiolar process anteroventrally pointed. In dorsal view petiolar node about as broad as long. Head, mesosoma and petiole densely punctured (China: Tibet) . . . . . Myopias menba
Xu Burwell & Nakamura 2014-6Myopias-menba hal.jpg

10

return to couplet #7

  • Eye with 6 facets in the maximum diameter. In lateral view petiolar node not narrowed dorsally, anterior and posterior margins parallel. Subpetiolar process anteroventrally pointed, anterior margin nearly vertical, posterior margin weakly concave. In dorsal view posterior margin of petiolar node straight. Head densely finely punctured. Body color blackish brown (China: Tibet) . . . . . Myopias luoba
  • Eye with 3 facets in the maximum diameter. In lateral view petiolar node weakly narrowed dorsally, anterior and posterior margins not parallel. Subpetiolar process ventrally pointed, anterior margin oblique, posterior margin weakly sinuate. In dorsal view posterior margin of petiolar node weakly concave. Head smooth and shining. Body color reddish brown (China: Yunnan) . . . . . Myopias daia
Xu Burwell & Nakamura 2014-7Myopias-daia hal.jpg