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Lachninae : Eulachnini : Cinara anelia
 

 

Cinara anelia

Single-leaf pinyon-pine aphid

On this page: Identification & Distribution Other aphids on the same host

Identification & Distribution

Adult apterae of Cinara anelia have the body dark brown to dark gray to black, with wax patterning on the thorax and abdomen (cf. Cinara atra, which has no wax). The wax may rub off, especially on the adults (see two pictures below), giving the aphid a mottled gray, brown and black appearance. The antennae have segments I and II pale, segments III-V basally light and gradually darkening distally, and segment VI dark throughout. Rostral segment IV has 4-8 accessory hairs (cf. Cinara edulis and Cinara atra, which have 11-22 and 10-17 accessory hairs respectively; and Cinara puerca and Cinara tanneri, which have 50-116 and 30-40 accessory hairs respectively). The femora tend to darken distally, the tibiae are pale but darken proximally and distally, and the tarsi are dark. The abdomen is smooth with rather dense hairs of variable length. There are no sclerites on abdominal tergite III (cf. Cinara caliente, which has large sclerites on all tergites including on tergite III). Tergites VII- VIII each have a pair of pale or dark sclerites encompassing the bases of several hairs (cf. Cinara terminalis, which has tergites VII & VIII with hairs arising from small scleroites). The siphunculi are well delimited, and have large, dark sclerotic cones. Immature Cinara anelia always have extensive wax patterning (see behind adult in second picture below).

Note: Cinara anelia has almost identical morphology to Cinara wahtolca, but DNA analysis has demonstrated that Cinara anelia, which feeds on Pinus monophylla as the aphids shown here were doing, is a distinct species (see Favret & Voegtlin, 2004). Cinara wahtolca is found on Pinus cembroides & Pinus edulis.

Images above copyright Jesse Rorabaugh, no rights reserved.

The alate Cinara anelia (not pictured) is similar to the apterous vivipara except for the following: There are 5-10 secondary rhinaria on antennal segment III; The metatibiae are darkened distally for slightly more than half their length; The only sclerites on the abdomen are on tergite VIII.

Images above copyright Jesse Rorabaugh, no rights reserved.

Cinara anelia is typically found in small to large colonies on needle-free or sparsely-needled branches, twigs, or trunks of young Pinus monophylla. It can be found in mixed colonies with Cinara edulis or Cinara terminalis and is frequently attended by ants. It is found everywhere Pinus monophylla grows.

 

Other aphids on the same host

Cinara anelia is found on only one pine species (Pinus monophylla).

Blackman & Eastop list 7 species of aphid as feeding on the single-leaf pinyon pine (Pinus monophylla) worldwide, and provide formal identification keys (Show World list). Of those aphid species, Baker (2015) lists none occurring in Britain (Show British list).

Acknowledgements

We are grateful to Jesse Rorabaugh for making his images of Cinara anelia available for use under public domain.

We have used the species account given by Favret & Voegtlin (2004) together with information from Roger Blackman & Victor Eastop in Aphids on Worlds Plants. We fully acknowledge these authors and those listed in the reference sections as the source for the (summarized) taxonomic information we have presented. Any errors in 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).

Useful weblinks

References

  • Favret, C. & Voegtlin, D.J. (2004). A revision of the Cinara species (Hemiptera: Aphididae) of the United States pinyon pines. Ann. Entomol. Soc. Am. 97(6), 1165-1197. Abstract