hypopygium

hypopygium

[‚hī·pə′pij·ē·əm]
(invertebrate zoology)
A modified ninth abdominal segment together with the copulatory apparatus in Diptera.
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References in periodicals archive ?
Weakly or strongly curved downwards, subshiny black with pale gray pollinosity; hypopygium weakly swollen.
1 A) with the first segment black on basal half, orange-yellow on apical half; segments 2 to 4 orange-yellow except posterior corners weakly black; the remainder of segments, including hypopygium black.
The recognition of the species in this huge genus is based on the male hypopygium in the first instance.
male; A: antenna; B: palpus; C: legs; D: wing; E: aedeagus; F: hypopygium, ventral view.
Abdomen subglossy black with gray pollinosity; hypopygium distinctly swollen.
The body length was measured from the insertion of the antenna to the apex of the hypopygium in males and to posterior margin of the fifth tergite in females.
Hypopygium very pale to pale yellow in parts and as in Fig.
Additionally, the hypopygium of some species generally has a tubercle-like or wart-shaped median volsella often bearing a tuft of setae.
A new reconstruction of the origin of Eremoneuran hypopygium and its implications for classification (Insecta: Diptera).
Genitalia (Figs 52-54): Hypopygium unrotated; epand (in dorsal view) quite short (about as long as proc), shallowly incised to form short distolateral lobes; goncx externally distally bilobed and projecting (in lateral view) to a level beyond that reached by epand; hypd (laterally) of moderate length (longer than external lobe of goncx) and (ventrally) broadly rounded distally.