Styloperlidae

Styloperlidae
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Cohort:	Polyneoptera
Order:	Plecoptera
Superfamily:	Pteronarcyoidea
Family:	Styloperlidae Illies, 1966

Styloperlidae is a family of stoneflies in the order Plecoptera. There are at least 2 genera and 9 described species in Styloperlidae. The species etymology is based on the type of locality near Sapa.[1][2][3]

History

The Styloperlidae family was originally proposed as a subfamily of the Peltoperlidae (Illies 1966), but later given family status (Uchida & Isobe 1989). Several species have little information associated with them, and most descriptions are based on relatively few specimens. Several types of Chinese species have also been lost.[3]

Habitat

There are three known Cerconychia species (Klapálek, 1913) and six Styloperla Wu species known from Taiwan, Hainan, and the mainland (Vietnam) (Uchida & Isobe 1989; Yang & Yang 1990, 1995).[3]

The Cerconychia brunnea (Klapálek) and C. livida (Klapálek) are known from Taiwan (Uchida & Isobe, 1989), the C. sinensis (Yang & Yang) are known from Hainan (Yang & Yang, 1995), and the C. sapa are known from the mainland in Vietnam.[3]

Description

Egg

The eggs are ovoid, with the collar absent, and the chorion smooth. This is typical for the Styloperlidae genus.[3]

Nymph

The Nymph is currently unknown.[3]

Adult

The adult males have numerous small spines scattered over the dorsum and margin of the basal cercal segment. This feature makes the males distinct from all other known Styloperlidae. The adult females have a slightly produced, emarginate subgenital plate similar to other known Cerconychia (Uchida & Isobe 1989). The forewing length measures 16.5‐18mm, making it greater than the 9‐16mm composite range given for the Taiwanese species.[3]

Genera

These two genera belong to the family Styloperlidae:

• Cerconychia Klapálek, 1913
• Styloperla Wu, 1935

References

1. "Styloperlidae". GBIF. Retrieved 2019-05-23.
2. DeWalt, R.E.; Maehr, M.D.; Neu-Becker, U.; Stueber, G. (2019). "family Styloperlidae Wu, 1935". Plecoptera species file online, Version 5.0. Retrieved 2019-05-23.
3. Stark, Bill P.; Sivec, Ignac. "Asynopsis of styloperlidae (insecta, plecoptera) with description of cerconychia sapa, a new stonefly from Vietnam" (PDF). illiesia.speciesfile.org. Retrieved 26 May 2022.

Further reading

• Baumann, Richard W.; Gaufin, Arden R.; Surdick, Rebecca F. (1977). "The stoneflies (Plecoptera) of the Rocky Mountains [USA]". Memoirs of the American Entomological Society. 31.
• Campbell, Ian C., ed. (1990). Mayflies and Stoneflies: Life Histories and Biology. Springer. doi:10.1007/978-94-009-2397-3. ISBN 978-94-010-7579-4. S2CID 39201439.
• DeWalt, R.; Cao, Y.; Tweddale, T.; Grubbs, S.; et al. (2012). "Ohio USA stoneflies (Insecta, Plecoptera): species richness estimation, distribution of functional niche traits, drainage affiliations, and relationships to other states". ZooKeys (178): 1–26. doi:10.3897/zookeys.178.2616. ISSN 1313-2989. PMC 3317619. PMID 22539876.
• Hynes, H. B. N. (1976). "Biology of plecoptera". Annual Review of Entomology. 21: 135–153. doi:10.1146/annurev.en.21.010176.001031.
• Stewart, Kenneth W.; Stark, Bill P. (1988). Nymphs of North American stonefly genera (Plecoptera). Entomological Society of America. ISBN 978-0929398556.