Delta pyriforme explained

Delta pyriforme is a species of potter wasp in the subfamily Eumeninae of the family Vespidae. They are distributed across Asia. Several populations are recognized:

• D. p. circinale (Fabricius, 1804)
• D. p. nigrocinctum Giordani Soika, 1993
• D. p. philippinense (Bequaert, 1928)
• D. p. pyriforme (Fabricius, 1775)

Delta pyriforme males have a yellow labrum and clypeus contrasting with the brown body colour. They also have a yellow pronotum and differ from Delta esuriens in lacking a yellow band on the petiole. Delta conoideum lacks yellow on the thorax.^{[1] [2]}

Notes and References

1. Pannure . Arati . Belavadi . Vasuki V. . Carpenter . James M. . 2016 . Taxonomic studies on potter wasps (Hymenoptera: Vespidae: Eumeninae) of south India . Zootaxa . 4171 . 1 . 1 . 10.11646/zootaxa.4171.1.1 . 27701247 . 1175-5334. subscription .
2. Yamane . Seiki . Matsuura . Hideaki . 1991 . Establishment of Delta pyriforme (Fabricius) in the Bonin Islands, Japan (Hymenoptera, Eumenidae). . Tropics . 1 . 2/3 . 155–162 . 10.3759/tropics.1.155 . 0917-415X. free .