Genus Andrewsiella Izzard, 1936

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Regional Maps

• Andrewsiella Izzard, R.J. 1936. The Hemiptera of Christmas Island. Annals and Magazine of Natural History 10 17: 577-600 [593].

  Type species:

   Andrewsiella oceanica Izzard, 1936 by original designation.

Introduction

This is one of two species of Tongini recorded on Christmas Island and both honour Dr C.W. Andrews who made extensive collections on the island for the BMNH.

Distribution

Other Regions

Christmas Island terrestrial & freshwater

Diagnosis

Frons produced in front of eyes; obtusely rounded; vertex a little longer than broad, strongly carinate at the anterior lateral margins and with a median anterior acuminate V-prolongation; eyes very large, reaching anterior margin of pronotum; face longer than broad, margins slightly convex, gradually widening towards clypeus, disc slightly elevated, lateral margins carinate, a median obscure percurrent ridge, and continuing throughout clypeus; clypeus almost as long as face, triangular. Pronotum narrow, arched in front between eyes, posterior margin straight, surface lightly granulate. Scutellum a little longer than pronotum. Hemielytra about twice as long as broad, costal margin convex at the basal third, thence straight to the apical angle which is rounded, apical margin straight, surface granulate particularly on the clavus, and a few scattered rounded tubercles; claval suture with a narrow coriaceous margin; wings fully developed (Izzard 1936).

The two species of Tongini found on Christmas Island were differentiated from each other by Fennah (1954) using the shape of the tegmen which, in this species, is widest near the apex with the sutural angle rightangled while in Distiana andrewsi (Kirby) the tegmen is widest near the midlength and the sutural angle is obtuse.

ID Keys

Fennah 1954: 459–461

Diagnosis References

Fennah, R.G 1954. The higher classification of the family Issidae (Homoptera: Fulgoroidea) with descriptions of new species. Transactions of the Entomological Society of London 105: 455-474 [459–461]

Izzard, R.J. 1936. The Hemiptera of Christmas Island. Annals and Magazine of Natural History 10 17: 577-600 [593]

History of changes