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mesoscutum
mesoscutum n. 
/ˌmɛzə(ʊ)ˈskjuːtəm/, /ˌmiːsə(ʊ)ˈskjuːtəm/, /ˌmiːzə(ʊ)ˈskjuːtəm/, /ˌmɛsoʊˈsk(j)udəm/ [ < meso- comb. form + scutum n.] Entomology the scutum of the mesothorax of an insect, esp. a hymenopteran.
Brit. /ˌmɛsə(ʊ)ˈskjuːtəm/
, /ˌmɛsə(ʊ)ˈskjuːtəm//ˌmɛzə(ʊ)ˈskjuːtəm//ˌmiːsə(ʊ)ˈskjuːtəm//ˌmiːzə(ʊ)ˈskjuːtəm/U.S. /ˌmɛzoʊˈsk(j)udəm/
, /ˌmɛzoʊˈsk(j)udəm//ˌmɛsoʊˈsk(j)udəm/ΘΚΠ
the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > thorax > dorsal part of or notum > larger or anterior part of
mesoscutum1833
1833 Entomol. Mag. 1 118 The sutures of the mesoscutum are indistinct.
1895 Amer. Naturalist 29 255 In the swift-flying sphinges the patagia acquire a remarkable development, extending posteriorly almost to the hinder margin of the mesoscutum.
1947 Evolution 1 174 The percentage of white hairs across the mesoscutum [of a solitary bee] between the anterior ends of the tegulae.
1997 Proc. Entomol. Soc. Washington 99 429 Demoreptus is distinguished from Acentrella..in the adult stage by having a small, rounded process anteriorly on the mesoscutum.
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