Pseudoeconesus bistirpis

Pseudoeconesus bistirpis
Pseudoeconesus bistirpis seen on the Auckland isthmus
Conservation status
Not Threatened (NZ TCS)[1]
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Trichoptera
Family:	Oeconesidae
Genus:	Pseudoeconesus
Species:	P. bistirpis
Binomial name
Pseudoeconesus bistirpis Wise, 1958
Synonyms
Pseudoeconesus tristirpis Wise, 1958

Pseudoeconesus bistirpis is a species of caddisfly belonging to the family Hydrobiosidae.[2] The species was first described by Keith Arthur John Wise in 1958,[2] and is endemic to New Zealand.[3]

Taxonomy

The species was identified by Wise in 1958, based on a specimen collected from the Tongariro area of the North Island Volcanic Plateau in 1930 by Alfred Philpott.[3][4] Pseudoeconesus tristirpis, which was identified in the same paper by Wise, became a junior synonym of Pseudoeconesus bistirpis in 1997.[5]

Description

P. bistirpis is brownish-yellow in colour, with rows of minute spots freckled on its forewings.[6]

Wise's original text (the type description) reads as follows:

Testaceous; ANTERIOR WINGS closely irrorated with rows of almost colourless spots between the veins. WING VENATION. Apical forks of anterior wing sessile. Apical forks 1 and 3 of posterior wing stalked. Sc and R₁ of posterior wing folded together for most of their lengths. Abdomen♂. Fifth abdominal segment with a pair of lateral processes. Length of anterior wing, ♂10 mm (0.39 in). ♀15 mm (0.59 in).[3]

The hindwings of P. bistirpis are similar to P. hudsoni, but can be identified due to the enlarged setae and inconspicuous humeral vein. [7]

Distribution and habitat

Pseudoeconesus bistirpis is endemic to New Zealand,[3] and is found across the North Island and the upper South Island.[6] The species can be identified in traps year-round.[8] It is found in seepages in New Zealand bush,[6] and is believed to be reliant on forested ecosystems.[9]

Gallery

• 
  Male holotype specimen held at Auckland War Memorial Museum
• 
  Male paratype specimen held at Auckland War Memorial Museum; the holotype of Pseudoeconesus tristirpis (synonymised in 1997)

References

1. "Pseudoeconesus bistirpis Wise, 1958". new Zealand Threat Classification System. Retrieved 12 August 2024.
2. "Pseudoeconesus bistirpis". Global Biodiversity Information Facility. Retrieved 11 August 2024.
3. Wise, K. A. J. (1958). "Trichoptera of New Zealand: I. A Catalogue of the Auckland Museum Collections with Descriptions of New Genera and New Species". Records of the Auckland Institute and Museum. 5: 49–63. ISSN 0067-0464. JSTOR 42906091. OCLC 9987167351. Wikidata Q58676764.
4. "Pseudoeconesus bistirpis". Auckland War Memorial Museum. Retrieved 12 August 2024.
5. John B. Ward (January 1997). "Twelve new species in the New Zealand caddis (Trichoptera) fauna, corrected type localities and new synonyms". New Zealand Journal of Zoology. 24 (2): 173–191. doi:10.1080/03014223.1997.9518112. ISSN 0301-4223. Wikidata Q104114512.
6. McGuinness, Carl A. (May 2001). The Conservation Requirements of New Zealand's Nationally Threatened Invertebrates (PDF) (Report). Wellington: Dept. of Conservation, Biodiversity Recovery Unit.
7. Stocks, Ian C (2010). Comparative and functional morphology of wing coupling structures in Trichoptera: Integripalpia. Annales Zoologici Fennici. JSTOR. pp. 351–386. ISSN 0003-455X.
8. Smith, Brian J; Collier, Kevin J; Halliday, N Jane (2002). "Composition and flight periodicity of adult caddisflies in New Zealand hill-country catchments of contrasting land use". New Zealand Journal of Marine and Freshwater Research. 36 (4): 863–878. Bibcode:2002NZJMF..36..863S. doi:10.1080/00288330.2002.9517138. ISSN 0028-8330.
9. Collier, Kevin J; Aldridge, Brenda MTA; Hicks, Brendan J; Kelly, Johlene; Macdonald, Amy; Smith, Brian J; Tonkin, Jonathan (2009). "Ecological values of Hamilton urban streams (North Island, New Zealand): constraints and opportunities for restoration". New Zealand Journal of Ecology: 177–189. ISSN 0110-6465.