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Aphidomorpha : Aphididae : Lizeriinae
 

 

Subfamily Lizeriinae

Biology and Morphology

On this page: Biology Morphology Genera

Biology

The Lizeriinae is a small subfamily of 24 species in 3 genera (Ceriferella, Lizerius, Paoliella). In life these aphids are covered with powdery wax, or more rarely with fluffy wax secretions (the Ceriferella). They feed on members of the laurel (Lauraceae), white mangrove (Combretaceae), torchwood (Burseraceae) and other plant families. They are mainly found in Africa and South America, with one species in India.

Paoliella nirmalae aptera. Image by permission, copyright Sunil Joshi & Poorani, J. Aphids of Karnataka.

The image above shows the single Indian species of this genus, Paoliella nirmalae. This species differs from all other species of the Paoliella genus in several respects: It has dorsal processes on all tergites; the antennal rhinaria are relatively small; the fore-femora of alatae are not enlarged; the ultimate rostral segment of apterae is shorter than the second hind-tarsal segment. The species is also unique in possessing small accessory spinal hairs on the mid-dorsum of all tergites.

 

Morphology

Adult Lizeriinae viviparae may be apterous or alate. The eyes of apterae may be compound or reduced to a triommatidium. The terminal process of their antennae is often elongate, narrowed from its base onward, with the accessory sensoria adjacent to a primary sensorium. The head and pronotum are mostly fused, but sometimes incompletely separated. The rostral apical segment is often strongly sclerified. The body bears up to 12 pairs of long finger-like processes. The fore-femora are mostly enlarged and adapted for jumping. The second tarsal segment has very long ventral setae. The empodial setae have pointed or weakly club-shaped apices. The siphunculi on tergite V are little raised above the surface. The cauda is long, finger-like, and knobbed. The anal plate is deeply incised or bilobed and sometimes weakly sclerotised.

Lizerius jorgei aptera. Image copyright Cunha & Sousa-Silva (2019) under a Creative Commons Attribution License.

In the alate an epicranial suture is often present. On the antennae the secondary rhinaria are circular or elliptical. The pronotum is emarginate behind, collar-like, and often with a median division line. Between the mesothoracic lobes there is often a triangular membranous field (foramen) present. The mesoscutellum often bears setae. The fore-wings mostly have a long, pointed pterostigma, the radial sector is almost straight, and the media once, or rarely twice branched. The hind wing has both oblique veins. Body processes are less developed (mammariform) or absent in alatae.

Lizerius jorgei alate. Image copyright Cunha & Sousa-Silva (2019) under a Creative Commons Attribution License.

The oviparae are apterous, and the males alate. The oviparae have palette-shaped subsiphuncular wax gland plates and scent plaques on all tibiae. Blister-like adhesive vesicles occur on the ventral posterior abdomen in a few Paoliella species of the subgenus Lizerocallis.

Lizerinae Genera

Acknowledgements

We particularly thank Colin Favret and Roger Blackman, who have provided invaluable assistance. Most of the subfamily diagnoses have been taken from Heie & Wegierek (2009b), Quednau (1999, 2003, 2010) and Blackman & Eastop (2021), with additional material from Russell (1982),Stroyan (1977), Stroyan (1984) and many others listed in the references for these pages.

We also thank Cunha & Sousa-Silva, and Joshi & Poorani for allowing us to reproduce their images, above. Note: Any images on pages that are not individually credited are copyright InfluentialPoints under a Creative Commons Attribution License.

Any errors in identification or information are ours alone, and we would be very grateful for any corrections. For assistance on the terms used for aphid morphology we suggest the figure provided by Blackman & Eastop (2006).

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