mesosoma


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mesosoma

[¦me·zō′sō·mə]
(invertebrate zoology)
The anterior portion of the abdomen in certain arthropods.
The middle of the body of some invertebrates, especially when the phylogenetic segmentation pattern cannot be determined.
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Mesosoma narrower than head width; mesoscutum 1.4x wider than long, 3.6x longer than mesoscutellum, 6.3x longer than metanotum; protibial spur with apical portion of rachis with a row of about 10 elongate branches (not including apical portion of rachis).
Body length: 2.06 to 2.83 mm; forewing length: 2.3 to 2.98 mm; face 1.39 to 1.47 times wider than longer; antenna 23 to 27 flagellomeres, the number of flagellomeres may vary between the antenna in the same individual; mandible 1,78 to 2.08 times longer than its apical width; mesosoma 1.24 to 1.4 times longer than higher; mid pit small and subcircular (Figure 3b), small and circular (Figure 3c) or elongated (Figure 3d); scutellar groove 2.25 to 2.5 times longer than its width; hind femur 4.9 to 5.3 times longer than wider; forewing: stigma 9.2 to 10 times longer than wider, length of the r vein smaller or not exceeding the stigma width; 3RSa vein 1.05 to 1.2 times longer than 2RS vein; 3RSb 3.14 to 3.47 times longer than 3Rsa; ovipositor 0.8 to 1.05 times longer than mesosoma.
Mesosoma: presencia de marcas negras en el margen interno del femur anterior y de infuscaciones oscuras basal en los femures medios.
Cabeza con reticulacion uniforme al igual que el dorso del mesosoma. Gaster con el primer segmento liso, el resto con reticulacion (Protasov et al., 2007a).
Head from above 1.65 x as wide as long, hardly noticeably wider than mesosoma, rather dull reticulate-coriaceous, frons slightly smoother in lower half.
Scape dark black; T1 attached broadly to mesosoma; a tooth shaped structure present at the distal end of hind femur (Fig.
--Erect hairs on scape short (0.07-0.10 mm), scape reaching or nearly reaching posterior lateral corner of head (SI 82.22-87.17); moderately short erect golden hairs on mesosoma (most over 0.06 mm, few over 0.25 mm in length), but longer (most over 0.25 mm) suberect hairs on petiole and postpetiole (0.25 mm); clypeal medial area not forming carina (smooth and rounded); mandibular index (55.10-55.55) ...
This male appears to have a masculinized mesosoma and metasoma, but a feminized head.