Key to European parasitic Myrmica queens

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Key to European parasitic Myrmica queens based on Garcia et al. (2024) as modified from Radchenko & Elmes (2003, 2010), García et al. (2008) and Seifert (2018).

1

  • Scape base in dorsal view gently curved, not angled (Fig. 1A) => 2
  • Scape base in dorsal view angled, sometimes with additional lobe or carina (Figs 1B, 1C) => 4
  • Garcia et al. (2024), Figure 1. Scapes in dorsal view of gynes of: (A) M. karavajevi from Truébano de Babia; (B) M. babiensis; (C) M. bibikoffi from Spain.

2

  • Scape shorter (SL/HL: 0.65–0.66) (Fig. 2A). Petiole triangular (Fig. 3A). Alps. Inquiline of Myrmica lobulicornis => Myrmica myrmicoxena
  • Scape longer (SL/HL: 0.86–1.01) (Fig. 2B). Petiole rounded dorsally (Fig. 3B). Collar-like ridge in the posterior margin of the head (Fig. 4) => 3
  • Garcia et al. (2024), Figure 2A. Head in frontal view of gyne of M. myrmicoxena, antweb specimen CASENT0907641.
  • Garcia et al. (2024), Figure 2B. Head in frontal view of gyne of M. karavajevi from Truébano de Babia.
  • Garcia et al. (2024), Figure 3A. Petiole in lateral view of gyne of M. myrmicoxena, antweb specimen CASENT0907641.
  • Garcia et al. (2024), Figure 3B. Petiole in lateral view of gyne of M. karavajevi from Truébano de Babia.
  • Garcia et al. (2024), Figure 4. Gyne of M. karavajevi from Truébano de Babia, posterior head border in lateral view, showing the collar-like ridge.

3

  • Garcia et al. (2024), Figure 5. Petioles, postpetioles and base of the gaster in lateral view of gynes of: (5A) M. lemasnei from Spain; (5B) M. karavajevi from Truébano de Babia.
  • Garcia et al. (2024), Figure 6. Petioles and postpetioles in dorsal view of gynes of: (6A) M. lemasnei from Spain; (6B) M. karavajevi from Truébano de Babia.

4

  • Eyes with conspicuous and appressed setae, 35–60 microns long (Fig. 7A) => 5
  • Setae in the eyes absent or, if present, erect and shorter (Fig. 7B) => 6
  • Garcia et al. (2024), Figure 7. Eyes in frontal view of gynes of: (7A) M. babiensis; (7B) M. bibikoffi from Spain.

5

  • Scape relatively longer (SL/HL: 0.70–0.75) and with a carina at the base (Fig. 8A); postpetiole narrower (PPW/HL: 0.62–0.69). Less robust. Apenines. Inquiline of Myrmica sabuleti or Myrmica scabrinodis => Myrmica laurae
  • Scape relatively shorter (SL/HL: 0.61–0.69) and without carina at the base (Fig. 8B); postpetiole wider (PPW/HW: 0.70–0.89). Cantabrian Mountains. Parasite of Myrmica aloba => Myrmica babiensis
  • Garcia et al. (2024), Figure 8. Scapes in dorsofrontal view of: (8A) M. laurae, antweb specimen CASENT0904098; (8B) M. babiensis.

6

  • Sculpture in the upper region of the petiolar node being longitudinally concentric, and without reticulation (Fig. 9A). Widespread across Europe. Facultative temporary parasite of Myrmica scabrinodis => Myrmica vandeli
  • Sculpture in the upper region of the petiolar node reticulate (Fig. 9B) => 7
  • Garcia et al. (2024), Figure 9A. Petiole in dorsal view of M. vandeli worker from Spain.
  • Garcia et al. (2024), Figure 9B. Petiole in dorsal view of M. bibikoffi gyne from Spain.

7

  • Smaller species, AL < 2 mm. Frons wider (FW/HW: 0.39–0.46). Reticulation of the head mainly restricted to the rear third (Fig. 10A). Widespread across Europe. Inquiline of Myrmica sabuleti and Myrmica lonae => Myrmica hirsuta
  • Bigger species, AL > 2 mm. Frons narrower (FW/HW: 0.34–0.35). Most of the head reticulate, only with longitudinal striae in the frons (Fig. 10B). Western Europe. Probable temporary parasite of Myrmica sabuleti and Myrmica spinosior => Myrmica bibikoffi
  • Garcia et al. (2024), Figure 10A. Head in frontal view of gyne of M. hirsuta, antweb specimen CASENT0172757.
  • Garcia et al. (2024), Figure 10B. Head in frontal view of gyne of M. bibikoffi from Spain.

References