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Key to Strumigenys of Korea
The following key to Korean Strumigenys species based on Dong & Kim (2020).
1
- Mandibles short, as long as clypeus length, triangular to subtriangular shaped, not elongated, without apical teeth. Mandibular masticatory margin relatively wide with small teeth => 2
- Mandibles long, more than twice as long as clypeus length, linear, with a couple of apical teeth. Mandibular masticatory margin relatively narrow => 10
2
return to couplet #1
- Head including clypeus, mandibles, antennal scape densely covered with reniform hairs in full-face view => Strumigenys hexamera
- Head without reniform hairs in full-face view => 3
3
return to couplet #2
- Diastema present between basal mandibles in full-face view. A couple of erect spatulate hairs on head, mesosoma, petiole, post petiole and gaster in profile view => Strumigenys mutica
- Diastema absent between basal mandibles in full-face view. Lacking distinct erect spatulate hairs on body in profile view => 4
4
return to couplet #3
- Anterior clypeal margin broadly and shallowly expanded, straight or concave => 5
- Anterior clypeal margin not broadly expanded => 7
5
return to couplet #4
- Midpoint of anterior clypeal margin slightly convex or straight in full-face view; anterolateral margins of clypeus angulated => Strumigenys membranifera
- Midpoint of anterior clypeal margin distinctly concave in full-face view; anterolateral margins of clypeus rounded => 6
6
return to couplet #5
- Entire clypeus and anterior margin of antennal scape covered with numerous appressed and erect spatulate hairs. Body covered with hairs => Strumigenys incerta
- Clypeus and antennal scape without appressed and erect spatulate hairs. Body almost entirely bare => Strumigenys canina
7
return to couplet #4
- Clypeus distinctly longer than wide. Dorsum of body covered with numerous long flagellate hairs => Strumigenys masukoi
- Clypeus length as long as wide, or wider than long => 8
8
return to couplet #7
- Head entirely covered with appressed small spatulate hairs in full-face view. Frons not protruded in lateral view => Strumigenys japonica
- Head without appressed spatulate hairs except mandibles in full-face view. Frons distinctly protruded in lateral view => 9
9
return to couplet #8
- Numerous laterally projecting hairs present along the dorsolateral margin of head in full-face view. Dorsum of pronotum and mesonotum covered with numerous long standing hairs => Strumigenys alecto
- Lack of laterally projecting hairs along the dorsolateral margin of head in full-face view. Dorsum of pronotum and mesonotum covered with appressed hairs, without distinctly long standing hairs in profile view => Strumigenys calvus
10
return to couplet #1
- Entire body except mandibles and lateral thorax covered with numerous spatulate hairs => Strumigenys choii
- Spatulate hairs not distinctly present on body => 11
11
return to couplet #10
- Body big, slender and elongated in dorsal view (ca. 3.0mm). Mandibles relatively long. Mesosoma in dorsal view relatively narrow. Propodeal lamellae concave anteriorly => Strumigenys solifontis
- Body small and stubby (ca. 2.5mm). Mandibles relatively short. Mesosoma in dorsal view relatively wide. Propodeal margin of propodeal lamellae usually straight or slightly convex => 12
12
return to couplet #11
- Apicoscrobal hair relatively short, not flagelliform => Strumigenys lewisi
- Apicoscrobal hair long filiform, usually flagelliform => Strumigenys kumadori