TITLE

Depilation increases while hairiness decreases the risk of drowning: A hitherto unappreciated survival role of setae in woolly bear caterpillars of the moth Lemyra imparilis (Lepidoptera: Noctuoidea: Erebidae)

AUTHOR(S)
MEYER-ROCHOW, V. BENNO
PUB. DATE
December 2016
SOURCE
European Journal of Entomology;12/30/2016, Vol. 113, p130
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This note aims to put on record a hitherto unreported function of caterpillar setae supplementary to those already known. When woolly bear caterpillars of the moth Lemyra imparilis (Butler) have their body hairs removed and are dropped into a bucket of water from a height of 30 cm, they sink immediately. Caterpillars, however, with an intact coat of hairs usually float. This hitherto unreported role of caterpillar setae as life-rafts should depend on a high contact angle ?e, and thus on the position, density and dimensions of the hairs. An SEM examination of the surface structure of the setae revealed a system of fine grooves and small distally pointing barbs on the hair shaft, which can trap air to support the weight of the insect. Insect setae generally and body hairs of caterpillars in particular are known to possess many functions, but a role as life-rafts for caterpillars in danger of drowning can now be added to the list of possible uses of body hairs.
ACCESSION #
120564247

 

Related Articles

  • Description of two new species of Cossidae (Lepidoptera) from China. Ivinskis, Povilas; Rimsaite, Jolanta; Saldaitis, Aidas; Yakovlev, Roman // ZooKeys;5/8/2012, Vol. 192, p35 

    Two new Cossidae species from China's Zhejiang and Sichuan provinces are described. The new species Phragmataecia monika sp. n. and Patoptoformis rimsaite sp. n. superficially resemble related congeners but can be distinguished by differences in wing pattern, genitalia and distribution....

  • FORCIPOMYIA (MICROHELEA) ERIOPHORA (WILLISTON) (DIPTERA: CERATOPOGONIDAE) AN ECTOPARASITE OF LARVAL ANAEA TROGLODYTA FLORIDALIS (NYMPHALIDAE). SALVATO, MARK H.; SALVATO, HOLLY L.; GROGAN JR., WILLIAM L. // Journal of the Lepidopterists' Society;2012, Vol. 66 Issue 4, p232 

    The article offers information on Forcipomyia Eriophora, an ectoparasite of larval anaea troglodyta floridalis. Forcipomyia (Microhelea) eriophora is an ectoparasite known to occur in Maryland and Florida, the west Indies and Mexico. It is said to have the same sub-lethal Forcipomyia...

  • Woolly bears.  // Better Homes & Gardens;Sep2011, Vol. 89 Issue 9, p134 

    The article discusses how the coppery band found on woolly bears can be used to know if the just-finished season was a longer one than usual.

  • Growth and Survival of a Tropical Polyphagous Caterpillar: Effects of Host and Group Size. Pescador-Rubio, Alfonso // Southwestern Entomologist;Mar2009, Vol. 34 Issue 1, p75 

    An experiment at Estación de Biología Chamela in western México addressed the consequences of social behavior on growth and survival of Hylesia lineata Druce caterpillars. Three of the primary hosts (Casearia corymbosa HBK, Thouinia paucidentata Radlk., and Eiythroxylum havanense Jacq.)...

  • Three new species of Fancy Case caterpillars from threatened forests of Hawaii (Lepidoptera, Cosmopterigidae, Hyposmocoma). Kawahara, Akito Y.; Rubinoff, Daniel // ZooKeys;2/22/2012, Vol. 170, p1 

    The endemic Hawaiian moth genus Hyposmocoma includes 348 described species and perhaps twice as many that remain undescribed. The genus is unusual within Lepidoptera in that its larvae create distinctive silk cases in which they perambulate while protected and camouflaged. An extraordinary...

  • Elephant hawk moth. Halstead, Andrew // Garden;Aug2009, Vol. 134 Issue 8, p523 

    The article offers information on the Elephant hawk moth (Deilephila elpenor) found in Great Britain. The caterpillars of the Elephant hawk moth are commonly found in gardens in Great Britain and Ireland during August. These caterpillars are sometimes green or blackish brown and have two pairs...

  • Life cycle, host plants and abundance of caterpillars of the aquatic moth Cataclysta lemnata (Lepidoptera: Crambidae) in the post-glacial lake in central Poland. PABIS, Krzysztof // North-Western Journal of Zoology;Dec2014, Vol. 10 Issue 2, p441 

    Two full generations of Cataclysta lemnata were recorded in a post-glacial lake in central Poland. The presence of pupae in mid-September demonstrated possibility of occurrence of the third partial generation at the beginning of autumn. This study also includes information on copulation time,...

  • Induction of Caterpillar Resistance in Sunflower Using Silicon and Acibenzolar-S-Methyl. Assis, F. A.; Moraes, J. C.; Assis, G. A.; Parolin, F. J. T. // Journal of Agricultural Science & Technology;May/Jun2015, Vol. 17 Issue 3, p543 

    The sunflower caterpillar Chlosyne lacinia saundersii (Lepidoptera: Nymphalidae) is considered a major pest in sunflower, causing severe defoliation and, thus, threatening production of oilseed. Chemical control remains the most widely used method for the management of this defoliator. To manage...

  • Bionomy ofAnicla mahalpa Schaus, 1898 (Lepidoptera: Noctuidae: Noctuinae), in the laboratory. Specht, A.; Formentini, A. C.; Corseuil, E. // Brazilian Journal of Biology;May2008, Vol. 68 Issue 2, p415 

    The genus Anicla Grote, 1874 is composed of eleven species; their larvae are harmful, mainly to native and cultivated grasses, but up to now, there is information available of only two species. This study aims at detailing the bionomy of A. mahalpa Schaus; the data were obtained from a...

Share

Other Topics