Sphex (Fernaldina) lucae de Saussure, 1867

Mesothorax.

Posterior thoracic spiracle occlusor muscle (sp3occ; Fig. 4A-D) arises medial on the mesepimeral ridge, anterior to the mesofurcal arm, inserts on the posterior thoracic spiracle (sp2), which additionally is surrounded by pl2-t2b (anterodorsal), pl2a-fu2 (posterodorsal), and pl2-cx2b (ventral). The small tracheal occlusor muscle sp3occ is located submedial of pl2a-fu2. Second mesopleuro-mesocoxal muscle (pl2-cx2b; first description; Fig. 4A, C, D) arises from the mesopleuron and partly from the mesopleural spiracle apodeme, fuses with pl2-cx2 and inserts dorsolaterally on the mesocoxa; it lies anteroventral to the mesepimeral ridge. Lateral mesofurco-mesotrochanteral muscle (fu2l-tr2; Fig. 4A, D) arises from the anterior surface of the mesofurcal arm, runs lateral to fu2m-tr2 and fuses with the same, then both insert laterally on the mesotrochanteral apodeme; fu2l-tr2 is half the size of that in Sceliphron .

Metathorax.

Lateral metapecto-metafurcal muscle (pc3l-fu3) and metafurco-metacoxal muscle (fu3-cx3) are absent. Metasterno-metacoxal muscle (s3-cx3; first description; Fig. 4B) arises from the metadiscrimenal lamella and inserts medially on the metacoxa.