Pariaconus lanaiensis (Crawford, 1918) Crawford, 1918

Percy, Diana M., 2017, Making the most of your host: the Metrosideros-feeding psyllids (Hemiptera, Psylloidea) of the Hawaiian Islands, ZooKeys 649, pp. 1-163 : 73

Pariaconus lanaiensis (Crawford, 1918) comb. n.

Trioza lanaiensis Crawford, 1918: 443

Comments.

No new material was collected during this study. Below is a summary of the description from Crawford (1918) who considered this species closely related to Pariaconus pullatus , yet he also describes it as being "an incipient, not clearly marked, species developing from the Oahuan species [ Pariaconus oahuensis ]"; he suggests that the divergence of Pariaconus lanaiensis and Pariaconus pullatus may reflect a parallel process to that seen on Oahu between Pariaconus oahuensis and Pariaconus ohiacola ( Crawford 1918). Interestingly, Crawford (1918) reports considerable intraspecific variation in size, noting "it is quite possible that in time these variations will break the species into several distinct ones", and this also reflects the patterns of variation observed on Oahu, Molokai, and Maui.

Adult colour and structure.

General body colour yellow to brown. Fore wing membrane clear or slightly fuscous, short setae on margins and veins. Reported size is similar to Pariaconus molokaiensis , but antennae are reported as up to 3 × head width; genal processes long (longer than vertex); male paramere longer than proctiger; female terminalia long (subequal in length to abdomen).

Immature.

Unknown.

Host plant notes.

Metrosideros : "taken on foliage of ohia lehua " ( Crawford 1918).

Island.

Lanai, Molokai.

Distribution notes.

Apparently common on Lanai ( Crawford 1918), the distribution on Molokai (according to Crawford 1927) needs confirmation.

Biology.

Unknown, but it likely makes enclosed galls, and if Crawford’s hypothesis of parallel divergence to that on Oahu is correct, then this may be a stem galling sister taxon to a leaf galling Pariaconus pullatus .

Type material.

Holotype, female (dry mounted, BPBM). See Table 2 for details of type material examined for this study.