Species Delphacodes muirianus Izzard, 1936

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Regional Maps

• Delphacodes muirianus Izzard, R.J. 1936. The Hemiptera of Christmas Island. Annals and Magazine of Natural History 10 17: 577-600 [595].

  Type data:

   
  Syntype(s) BMNH 1 ♂ (coll.: 1.iv.1933, F. Harms), Christmas Island; BMNH 20 ♀♀ (coll.: 1.iv.1933), Christmas Island; BMNH 1 ♀ (coll.: 1.ii.1933, F. Harms), Shore Terrace, Christmas Island.

Introduction

One of only two delphacids recorded from Christmas Island, the other being Ugyops aristella (Kirby) in the Asiracinae. Izzard (1936) described the species from one male, which was macropterous, and 21 females, which were brachypterous. The male is available for lectotype designation.

Distribution

Other Regions

Christmas Island terrestrial & freshwater

Ecological Descriptors

All stages: phloem feeder.

Diagnosis

Male. Macropterous; length 1.5mm., tegmen 2 mm. Vertex slightly longer than wide, apex slightly rounded, projecting a little beyond eyes, base at about middle of eyes; length of frons more than double the width; median carinae simple; antennae reaching beyond base of clypeus, first segment longer than wide, second segment about one and a half times length of first. Tegmina passing apex of abdomen. Opening of pygophore wider than long; margins entire; anal emargination large, anal angles simple; diaphragm very short in middle between bases of genital styles in tongue-shaped lobe; anal tube with two spines exceptionally long and slender, extending to behind base of genital styles; genital styles widened apically and truncate, inner margins concave, outer margins convex. Aedeagus subtubular, apical third curved ventrally at right angles, several small spines around the apical third. Colour, dark brown between carinae of face and clypeus, carinae of face and thorax lighter than ground colour. Abdomen fuscous. Tegmina hyaline, veins same colour as membrane, granules minute, same colour as veins. Female. Brachypterous; length 1.9 mm, tegmen 1.1 mm, reaching to base of fifth abdominal tergite, similar in colour to male, femora and tibiae darkish brown, becoming lighter laterally, tarsi yellowish. (Izzard 1936)

Diagnosis References

Izzard, R.J. 1936. The Hemiptera of Christmas Island. Annals and Magazine of Natural History 10 17: 577-600 [595–596]

History of changes