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Trichoptera: Limnephilidae of Gunnison County, Colorado

Introduction to the caddis fly Hesperophylax
Silver Striped Sedges

Banks, 1916
Updated 3Dec2017
TSN 116001

Gunnison Basin Species List

Hesperophylax consimilis
Hesperophylax occidentalis
Possibly present: Hesperophylax designatus

Links

On this website:
Limnephilidae Introduction

Other Websites:
Photos and more - Bugguide.net

Distinuguishing Hesperophylax - from Aquatic Insects of North Dakota

References

Banks,N 1916 A classification of our limnephilid caddice flies. Canadian Entomologist 48: 117-122.

The rest of the key is not useful these days. Arctaecia and Astenophylax are invalid names now, however the details for Hesperophylax describe the genus for the first time.


Nelson,SM 1994 Observed field tolerance of caddisfly larvae (Hesperophylax sp.) to high metal concentrations and low pH.
     Abstract: " Tolerance of Hesperophylax sp. to a low pH mine tailings seep which contained high concentrations of heavy metals was documented in Lake County, Colorado. "

Parker, CR and Wiggins,GB 1985 The nearctic caddisfly genus Hesperophylax (Trichoptera: Limnephilidae). Canadian Journal of Zoology 61(10)2443-2472.
     Abstract: " Seven species of Hesperophylax are recognized: alaskensis (Banks), consimilis (Banks), designatus (Walker), magnus Banks, minutus Ling, occidentalis (Banks), and mexico n.sp. Hesperophylax alaskensis is reestablished as a valid species distinct from occidentalis. Hesperophylax incisus Banks is placed as a junior subjective synonym of designatus. Hesperophylax oreades Saether is placed as a junior subjective synonym of Psychoronia costalis (Banks). Keys are provided for identification of males, females, and larvae. A hypothesis of phylogeny is proposed in which consimilis is the sister group of all other Hesperophylax; magnus and mexico are sister species and together are the closest relatives of occidentalis, designatus, and alaskensis; designatus and alaskensis are sister species. An interpretation of biogeography is offered, suggesting how geological events affected the origin and distribution of Hesperophylax species. Data on food, life cycle, habitat, and distribution are given. All species appear to be univoltine with extended flight periods. Larvae are opportunistic omnivores, but magnus is more predaceous than the other species. Differences in mandibular morphology between consimilis and the other species are not reflected in the food habits of the larvae. Among Trichoptera the species of Hesperophylax are little differentiated morphologically and most species vary within unusually broad limits; most species occur in a wider range of habitat types than do other Trichoptera. Perhaps those factors represent a genetic plasticity selected for generalized adaptability rather than the habitat specialization of other Trichoptera."



Brown, WS 2012 Trichoptera (Caddisflies) of Gunnison County, Colorado, USA
www.gunnisoninsects.org