Lopodytes

Lopodytes Rondani 1867[5] is a genus in the family Reduviidae, the assassin bugs. Members of the genus have been unofficially assigned the common name Grass Assassin bugs,[6] but generally this name remains meaningful only to naturalists, because these insects have been too well camouflaged to raise robust public awareness.

This article is about the Hemipteran genus Lopodytes. For Lophodytes, the aquatic bird, see Hooded merganser.

Lopodytes
Lopodytes species
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hemiptera
Family: Reduviidae
Subfamily: Harpactorinae
Tribe: Harpactorini
Genus: Lopodytes
Stål, 1853[1][2] Rondani, 1867[3]
Type species
Lopodytes grassator
Stål, 1853[4]

Description

Lopodytes species are small-to-medium-sized bugs, measuring between 10 and 20 mm in length. They are however very gracile and elongate in build, with nearly parallel sides, so they are far less massive than most insects of a similar bodily length. Usually they occur in savanna grass and similar vegetation, but on a level surface they generally adopt a very horizontal posture that emphasizes their resemblance to the thread assassins, the Emesinae. They easily may be confused with the Emesinae, but they are somewhat less gracile, typically 50% to 100% larger in linear measurement, and unlike the Emesinae, they do not have raptorial front legs.

In color Lopodytes species generally are a range of dusty greyish yellows to browns, shades that combine with their shape to make them inconspicuous in the partly dried tussock grasses that they normally inhabit. They probably are noticed far less often in the field than when they come to lights at night in certain seasons.

Etymology

The name Lopodytes could well be a source of confusion. It might refer to the Ancient Greek root λοπος, meaning bark or covering, plus δυτης, a diver,[7] suggesting a creature that hides under coverings, but it might more likely derive from λοποδυτατ, an old word for a robber that stripped the clothing off victims.[8]

Furthermore, there is a genus of ducks, Lophodytes which is sufficiently similar in spelling to cause either confusion in reference or errors in typing.

Biology

The biology of Lopodytes species has not been much studied. They appear to be predators of small insects, typical of Reduviid specialised for life in tussock grasses in savanna-like areas. As a rule both sexes are winged, but wingless forms occur.[6] They have been reported to come to lights, but only occasionally. In those species for which observations have been recorded, the eggs are very elongate and are laid on grass stems either singly or in small clusters.[9]

Taxonomy and distribution

The genus Lopodytes is in the order Hemiptera, suborder Heteroptera, family Reduviidae, subfamily Harpactorinae. Some sources give the genus authority as Rondani, 1867, but others credit Stål, 1853, Ofv. Vet.-Ak. Fork. 10, p. 263.[2]

The genus is native to the savanna and near-savanna regions of Africa, mainly south of the Sahara.

The following species have been described, some within indicated ranges.[5][10][11]

  • Lopodytes agilis Miller, 1950 Malawi, Botswana, Zimbabwe
  • Lopodytes arenicola Schouteden, 1932
  • Lopodytes armatus Villiers, 1948
  • Lopodytes baoule Villiers, 1965
  • Lopodytes bequaerti Schouteden, 1913[12]
  • Lopodytes collarti Schouteden, 1932
  • Lopodytes dolichomerus Reuter, 1881
  • Lopodytes flavoniger
  • Lopodytes grassator Stål, 1853 Zimbabwe, Namibia, Transvaal, Cape, KwaZulu-Natal
  • Lopodytes kasaicus Schouteden, 1932
  • Lopodytes katangae Schouteden, 1952
  • Lopodytes kivuensis Schouteden, 1952
  • Lopodytes longispinus Villiers, 1945
  • Lopodytes macellus Villiers, 1952
  • Lopodytes mashonae Distant, 1903 Zimbabwe
  • Lopodytes nigrescens Miller, 1950 Tanzania, Zimbabwe
  • Lopodytes pallida Schouteden, 1932
  • Lopodytes palustris Linnavuori, 1974
  • Lopodytes punctulatus Villiers, 1983
  • Lopodytes quadrispinosus Villiers, 1948
  • Lopodytes schoutedeni Maldonado, 1953
  • Lopodytes scopsi Schouteden, 1952
  • Lopodytes spectabilis Miller, 1941
  • Lopodytes spiniger Reuter, 1881 Namibia
  • Lopodytes testaceus Villiers, 1960
  • Lopodytes transvaalensis Miller, 1956 Northern Transvaal
  • Lopodytes tuberculatus Villiers, 1948
  • Lopodytes victoriae Miller, 1956 Zimbabwe

References
  1. Ofv. Vet.-Ak. Fork. 10, p. 263
  2. MILLER, N. C. E. A NEW SUBFAMILY, NEW GENERA, AND NEW SPECIES OF REDUVIIDAE (HEMIPTERA-HETEROPTERA). J Commonwealth Institute of Entomology, London Pp. 47-117 ; Plates 1-4 ; 92 Text-figures BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ENTOMOLOGY Vol. 8 No. 2 LONDON: 1959
  3. Ann. Soc. natural. Modena, vol. 2, 1867, p. 39. Also: Bull. Soc. Ent. Ital., vol. 9, 1877, p. 184.
  4. Hesse, A. J. Contributions to a Knowledge of the Fauna of South-West Africa. IV. A List of the Heteropterous and Homopterous Hemiptera of South-West Africa. ANNALS OF THE SOUTH AFRICAN MUSEUM VOLUME XXIII 1925-1926.
  5. Maldonado Capriles, Jenaro. University of Puerto Rico Catalogue of the Reduviidae of the World. Special Edition of the Caribbean Journal of Science, 1990
  6. Alan Weaving; Mike Picker; Griffiths, Charles Llewellyn (2003). Field Guide to Insects of South Africa. New Holland Publishers, Ltd. ISBN 1-86872-713-0.
  7. H. G. Liddell (1889). An Intermediate Greek-English Lexicon: Based on the 7th Ed of Liddell & Scott's Lexicon.
  8. Christopher Carey (12 March 2012). Trials from Classical Athens. Routledge. pp. 286–. ISBN 978-1-136-62190-1.
  9. Miller, N. C. E. Notes on the biology of the Reduviidae of Southern Rhodesia. Trans. zool. Soc. Lond. 27: 541-654.1953
  10. Reavell, Patrick E. Department of Botany, University of Zululand. January 2000 The Assassinbugs (Hemiptera: Reduviidae) of South Africa "Archived copy". Archived from the original on 2012-02-23. Retrieved 2014-07-27.CS1 maint: archived copy as title (link)
  11. Discover Life, with support from National Biological Information Infrastructure and National Science Foundation
  12. Maldonado Capriles, J. (1987). "Lopodytes bequaerti Schouteden and two allied new species (Insecta: Reduviidae)". Revue De Zoologie Africaine. 100: 395–398.
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