Metasternum


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Met`a`ster´num


n.1.(Anat.) The most posterior element of the sternum; the ensiform process; xiphisternum.
2.(Zool.) The ventral plate of the third or last segment of the thorax of insects.
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Metasternum sides almost fully pubescent, including latera fossae; metasternal disc delimited entirely by punctate area.
palmyra for the present, because they possess the distinctively concave posterior metasternum, a small and bidentate posteromedial metasternal process, and a basally incised fore tibia, but have not designated them as paratypes because of the significant geographic distance separating the two populations, which suggests that the Pagan population may eventually prove to be a distinct species once additional material is available for a more detailed evaluation.
Head capsule usually wider than long, oval, depressed, frons ridged between and above antennae; mouth parts inferior; prosternum variable; pronotum usually wider than long occasionally as wide as long, convex, prosternal process short, truncate; mesepisternum and mesepimeron cut off from mesocoxal cavity by meso- and metasternum, mesepimeron reduced in size; scutellum cordate; tarsi, simple; claws, simple, dentate or undentate.
Mesonotum with 1 moderately long brownish notopleural, 1 postalar and 4 subequally long scutellar setae (apical pair cruciate); some minute setulae present behind postpronotal lobe; mesosternum and metasternum between posterior four coxae bare.
19(17) Tercer tarsomero lobulado, cuarto tarsomero simple; hipomeron sin cavidades antenales; mesosternum y metasternum fusionados Semiotus
Venter: Prosternum separated from fused meso- and metasternum and sternites I + II by a suture, the latter medially with an oval depression; metapleural scent gland canals distinct and visible from above, abdominal spiracles II-IV ventral, V-VIII lateral and visible from above.
Venter: prosternum parrot green, metasternum piceous, mesosternum and abdomen yellowish tinged with brown.