Printer Friendly

Unusual behaviour--unusual morphology: mutualistic relationships between ants (Hymenoptera: Formicidae) and Diaphorina enderleini (Hemiptera: Psylloidea), associated with Vernonia amygdalina (Asteraceae).

INTRODUCTION

Most Sternorrhyncha and Fulgoromorpha are phloem feeders. Phloem sap provides a highly unbalanced diet, resulting in the excretion of large amounts of honeydew. This carbohydrate-rich liquid provides a valuable food resource for various insects such as ants (Way 1963; Gullan 2001). Ants actively collect honeydew and often live in close association with sap suckers (Way 1963). This mutualistic relationship is beneficial for both partners (Buckley 1987; Delabie 2001; Davidson et al. 2003). The ants obtain high quality food and the hemipterans receive protection from predators and parasitoids (Novak 1994). Ant attendance is well known from aphids (Kaplan & Eubanks 2005; Idechiil et al. 2007; Grover et al. 2008; Nielsen et al. 2010) and scale insects (Heckroth et al. 1998; Johnson et al. 2001; Ueda et al. 2008; Ben-Dov 2010) but seems less relevant in psyllids (Novak 1994). Based on observations conducted in Cameroon, we report ant attendance of the widely distributed Afrotropical psyllid Diaphorina enderleini Klimaszewski, 1964, developing on Vernonia species.

Psyllids or jumping plant-lice are one of the four superfamilies of Sternorrhyncha comprising to date some 3850 described species worldwide. The group is particularly species-rich in the tropics. Psyllids are generally monophagous or narrowly oligophagous with respect to their angiosperm hosts (Hodkinson 1974). Often, related psyllid species develop on related host-plant taxa. A major exception to this high host conservatism is the large Old World genus Diaphorina Low, 1880, which recruits hosts from at least 19 families in 10 plant orders of dicotyledonous angiosperms (Hollis 1987; Burckhardt & van Harten 2006).

Diaphorina enderleini was originally described by Enderlein (1910), as Gonanoplicus guttulatus, based on material collected from Tanzania. Klimaszewski (1964) transferred G. guttulatus to Diaphorina and replaced the name for reasons of homonymy with D. enderleini. Loginova (1978) described Diaphorina siluncula from Sudan. Burckhardt and Mifsud (1998) finally synonymised D. siluncula with D. enderleini, provided a detailed morphological description of the adults and reported the species from Yemen. The psyllid is currently known from Tanzania, Sudan and Yemen in the Afrotropical Region (Burckhardt & van Harten 2006). So far nothing has been known about the larvae and host plants of D. enderleini apart from the very brief and not diagnostic description by Enderlein (1910).

Vernonia amygdalina Delile (Asteraceae) is a perennial shrub native to tropical Africa and the southern tip of the Arabian Peninsula. It is a multipurpose plant used as a medicinal plant throughout its distribution range (CVPSL 2003; Banjo et al. 2006; Nzigidahera 2008), or as a vegetable in West Africa (Anonymous 2005; Asawalam & Hassanali 2006). V. amygdalina naturally colonises secondary forests and cultivated land. For this reason it can be regarded as a non-timber forest product (NTFP). It is also planted in gardens and as fences around houses. For cultivation it is generally propagated by planting shoots (Shippers 2000), and thus can be regarded as a crop. Some studies highlight its insecticidal or insect repellent properties (Asawalam & Hassanali 2006; Kabeh & Jalingo 2007). These properties, if proved, may be due to the presence of lactone, oxalic acid and hydrocyanic acid (HCN) found in its leaf dust (Kabeh & Jalingo 2007). Other studies have tested its fodder potentials (Bonsi et al. 1995; El Hassan et al. 2000; Mekonnen et al. 2009; Tabuti & Lye 2009). In Cameroon V. amygdalina is known as Ndole, an essential ingredient of the popular meal offered by all local restaurants. The increased demand for this vegetable in cities stimulates the intensification of its production in urban and periurban areas (Anonymous 2005). It is even sold outside Cameroon, as in Nigeria, Equatorial Guinea or Gabon, and sometimes in Europe for niche markets (e.g. Africans in European countries) (Bosch et al. 2009).

Several insects, including Hemiptera (Sternorrhyncha, Cicadomoprpha, Fulgoromorpha and Heteroptera), Coleoptera (Coccinellidae and Cucurlionidae), Lepidoptera and Orthoptera, are reported feeding on leaves of this important crop (Banjo et al. 2006; Alene et al. unpubl. data) and D. enderleini constitutes a potential pest. The present paper aims to provide additional information on the morphology, especially of the fifth instar larva, and to describe the relationships between the psyllids and four associated ant species.

MATERIAL AND METHODS

Material of D. enderleini from Cameroon collected on V amygdalina was examined from the localities listed in Table 1. The specimens are preserved dry, slide-mounted, or stored in 70 % ethanol, and are deposited in the following institutions: Laboratory of Zoology, University of Yaounde 1, Cameroon (LZUY1); Museum d'histoire naturelle, Geneve, Switzerland (MHNG); Naturhistorisches Museum Basel, Switzerland (NHMB). Additional material examined comes from Ethiopia (Vernonia amygdalina, NHMB), as well as Kenya and Yemen (both without host data, MHNG).

The drawings and measurements were made from slide-mounted specimens. The morphological terminology follows Hollis (1976, 1984) and Ossiannilsson (1992). The following abbreviations are used: BL--body length; BW--body width; AL--antenna length; FL--forewing pad length; MTL--metatibia length; CL--caudal plate length; CW--caudal plate width; BL/BW--ratio of body length to body width.

TAXONOMY

Genus Diaphorina Low, 1880

Diaphorina enderleini Klimaszewski, 1964

Figs 1-5

Gonanoplicus guttulatus Enderlein, 1910: 143.

Diaphorina enderleini: Klimaszewski 1964: 59 (replacement name for Diaphorina guttulata (Enderlein) nec Lethierry, 1890).

Diaphorina siluncula Loginova, 1978: 77 (synonymised by Burckhardt & Mifsud 1998: 29).

Description:

Adult. Described by Burckhardt and Mifsud (1998: 29, figs 48, 55, 56, 82). It is well-defined by its forewing shape and pattern as well as the apically-hooked paramere and the concave dorsal margin of the female proctiger.

Fifth instar larva (Figs 1-5).

Colouration. Sclerites dark brown; membrane beige. Eye reddish pink. Antenna yellow basally, dark brown in apical quarter. Wing pads with dark brown pattern.

Morphology. Body almost as long as wide (Fig. 1). Antenna (Fig. 2) short, 3-segmented, segment 3 (flagellum) bearing 4 rhinaria, apex tapering with two terminal setae, one about 1.5x longer than the other. Dorsal sclerites large and forewing pads well sclerotised; dorsal and ventral sclerites covered in short setae. Forewing pad large and massive, with well-developed humeral lobe, outer margin (Fig. 3) bearing short slender lanceolate setae, posterior apex angled; dorsal surface covered in very short setae. Hindwing pad broad, apex almost rounded, margin and dorsal surface as in forewing pad. Tarsal arolium (Fig. 4) almost twice as long as claws, widened apically with a very short petiole. Caudal plate (Fig. 5) about 1.5* wider than long, rounded posteriorly, weakly indented at apex. Abdominal margin with slender lanceolate setae slightly longer than those on forewing pad margin, setae becoming longer towards apex. Abdominal venter sparsely covered in fairly long setae. Anus terminal, circumanal ring vestigial.

Measurements (in mm) and ratios (11 specimens): BL 1.38-1.75; BW 1.23-1.58; AL 0.30-0.38; FL 0.75-0.88; MTL 0.26-0.30; CL 0.53-0.68; CW 0.85-0.95; BL/BW 1.11-1.12.

Distribution. Cameroon, Ethiopia, Kenya, Sudan, Tanzania, Yemen.

ANT-TENDING AND SHELTER-BUILDING BEHAVIOUR

During field studies of Diaphorina enderleini on Vernonia amygdalina, four ant species (Hymenoptera: Formicidae) widespread in the Afrotropical Region were encountered with the psyllid colonies: Pheidole megacephala (Fabricius, 1793) at Yaounde, Nkolondon, Okola and Obala, Camponotus acvapimensis Mayr, 1862, at Olembe and Obala, Crematogaster striatula Emery, 1892, at Koutaba, and Myrmicaria opaciventris Emery, 1893, at Yaounde.

[FIGURES 1-5 OMITTED]

[FIGURES 6-10 OMITTED]

Among these ants, a very unusual behaviour of P megacephala and C. striatula was observed. While female psyllids are laying eggs on the lower leaf surface, workers of P megacephala quickly pile up detritus combined with soil around and partly above the psyllids, resulting in a shelter-like structure (Figs 6, 7). Those of C. striatula build carton shelters (Fig. 8). During this procedure the adult female psyllids hardly move away from their eggs and larvae. The psyllid larvae are arranged in tight rows along the leaf veins, especially the principal one, and sometimes at the base of very young branches. The larvae are mostly sedentary and only move, slowly and steadily, when disturbed. They do not produce wax, as can be expected from the almost complete lack of the circumanal ring. Females and larvae excrete large drops of honeydew, which are immediately recovered by ants.

In C. acvapimensis and M. opaciventris the workers did not build any structure around the psyllids but they were observed taking honeydew from them (Figs 9, 10).

DAMAGE TO THE HOST

Adults and larvae of Diaphorina enderleini feed by sucking the plant sap. Feeding by the larvae is especially injurious due to their large number and their immobility (they feed at the same spot for a long time). A noticeable symptom is the appearance of translucent aureoles on the leaves, apparently resulting from the toxicity of the saliva injected by the psyllids.

DISCUSSION AND CONCLUSION

The larvae of Diaphorina enderleini share a series of morphological characters with other Diaphorina spp., such as the three-segmented antenna with four rhinaria on segment 3, the presence of a humeral lobe on the forewing pad and the marginal lanceolate setae on the wing pads and caudal plate. However, while a circumanal ring of wax-producing pores is well-developed in the larvae of the other known species of Diaphorina (Burckhardt 1985, 1986; Burckhardt & Mifsud 1998; Burckhardt & van Harten 2006), it is almost completely lacking in D. enderleini, and is not functional. In fact, the larvae do not produce wax. This habit probably exposes them to environmental constraints and natural enemies.

Among psyllids, different strategies for the protection of larvae are realised. In several free-living psyllids, such as Mesohomotoma and Psylla spp., the larvae are completely covered in abundant wax produced by wax glands which are connected to the circumanal ring and to additional pore fields on the caudal plate (Hodkinson 1974). In Diclidoplebia xuani Messi, 1998, and Diclidoplebia harrisoni Osisanya, 1969, the larvae covered in wax induce leaf roll galls in which they live (Burckhardt et al. 2006; Alene et al. 2008). Many larvae of the Australian Spondyliaspidini form lerps, i.e. protecting shields mostly composed of starch under which they live (Hollis 2004). The New World Euphalerus spp. associated with Lonchocarpus spp. live either in galls or under lerps (Hollis & Martin 1997), whereas many other taxa live in closed galls, such as the Afrotropical Phytolyma spp. on Moraceae (Hollis 1973), some Afrotropical Pseudopharcopteron spp. (Malenovsky et al. 2007; Malenovsky & Burckhardt 2009) or members of the South American Calophya rubra (Blanchard, 1852) group on Schinus spp. (Burckhardt & Basset 2000).

As the larvae of D. enderleini neither induce gall-like structures nor produce wax, they need an extrinsic protection which may be provided by the attendance of ants. The latter expect to be recompensed by honeydew excreted by the psyllids. Two ant species, P. megacephala and C. striatula, appear as good partners in this interaction since they build shelters to protect the psyllids from environmental constraints and natural enemies.

The shelter is probably also a means for the ants to protect the source of honeydew from competitors such as other hymenopterans and dipterans. Similar relationships are widely recorded in several groups of Sternorrhyncha and Auchenorrhyncha (Delabie 2001; Naskrecki & Nishid 2007; Verheggen et al. 2009) and a few groups of Heteroptera (Pfeiffer & Linsenmair 2000; Gibernau & Dejean 2001). There are very few records of this type of trophobiosis in psyllids (Novak 1994).

ACKNOWLEDGEMENTS

We are grateful to the farmers of all the collecting localities who allowed us to work in their gardens and the monks of the Koutaba Cistercian Monastery for facilities provided during the study in their site. We thank Estee Bochud (Thun) for the digital preparation of the drawings. We also thank Igor Malenovsy (Brno) and an anonymous reviewer for providing useful comments on an earlier manuscript version. DCA is grateful for receiving a grant from Pro Entomologia, Basel, to work at the NHMB.

REFERENCES

ALENE, D.C., DJIETO LORDON, C., BURCKHARDT, D. & MESSI, J. 2008. Population dynamics of the Ricinodendron psyllid, Diclidophlebia xuani (Hemiptera: Psyllidae), and of its predators in Southern Cameroon. Mitteilungen der Schweizerischen Entomologischen Gesellschaft 80: 87-103.

ANONYMOUS. 2005. Leafy vegetables: A treasure to be plucked. Spore 116: 3.

ASAWALAM, E.F. & HASSANALI, A. 2006. Constituents of the essential oil of Vernonia amygdalina as maize weevil protectants. Tropical and Subtropical Agroecosystems 6: 95-102.

BANJO, A.D., LAWAL, O.A. & AINA, S.A. 2006. Insects associated with some medicinal plants in South-Western Nigeria. World Journal of Zoology 1: 40-53.

BEN-DOV, Y. 2010. On new taxa and some described armoured scale insects (Hemiptera: Diaspididae) living in the galleries of the ant Melissotarsus insularis Santschi (Hymenoptera: Formicidae) in Madagascar. Zootaxa 2368: 49-58.

BONSI, M.L.K., osuji, P.O., Tuah, A.K. & umunna, N.N. 1995. Vernonia amygdalina as a supplement to teff straw (Eragrostis tef) fed to Ethiopian Menz sheep. Agroforestry Systems 31: 229-241.

BOSCH, C.H., BORUS, D.J. & SIEMONSMA, J., eds. 2009. Vegetables of Tropical Africa. Conclusions and recommendations based on PRoTA 2: 'Vegetables'. Wageningen: PROTA Foundation.

BUCKLEY, R.C. 1987. Interactions involving plants, Homoptera, and ants. Annual review of Ecology and Systematics 18: 111-135.

BURCKHARDT, D. 1985. The Meditteranean species ofDiaphorina Loew (Homoptera: Psylloidea). Phytophaga (Palermo) 2: 1-30.

--1986. Sternorrhyncha: Suborder Psylloidea of Saudi Arabia (Part 2). Fauna of SaudiArabia 7: 141-159.

BURCKHARDT, D., ALENE, D.C., OUVRARD, D., TAMESSE, J.L. & MESSI, J. 2006. Afrotropical members of the jumping plant-louse genus Diclidophlebia (Hemiptera: Psylloidea). Invertebrate Systematics 20: 367-393.

BURCKHARDT, D. & BASSET, Y. 2000. The jumping plant-lice (Hemiptera, Psylloidea) associated with Schinus (Anacardiaceae): systematics, biogeography and host plant relationships. Journal of Natural history 34: 57-155.

BURCKHARDT, D. & MIFSUD, D. 1998. Psylloidea (Insecta: Hemiptera) of the Arabian Penisula. Fauna of Arabia 17: 7-49.

BURCKHARDT, D. & VAN HARTEN, A. 2006. Jumping plant lice (Insecta: Hemiptera: Psylloidea) of Yemen. Fauna of Arabia 21: 189-216.

CVPSL. 2003. Pratiques et Savoirs Locaux. Bulletin trimestriel de liaison et d'information du Centre de Valorisation des Pratiques et Savoirs Locaux 000: 1-6.

DAVIDSON, D.W., COOK, S.C., SNELLING, R.R. & CHUA, T.H. 2003. Explaining the abundance of ants in lowland tropical rainforest canopies. Science 300: 969-972.

DELABIE, J.H.C. 2001. Trophobiosis between Formicidae and Hemiptera (Sternorrhyncha and Aucheno rrhyncha): An overview. Neotropical Entomology 30: 501-516.

EL HASSAN, S.M., KASSI, A.L., NEWBOLDA, C.J. & WALLACE, R.J. 2000. Chemical composition and degradation characteristics of foliage of some African multipurpose trees. Animal Feed Science and Technology 86: 27-37.

ENDERLEIN, G. 1910. 12. Hemiptera, 8. Psyllidae. In: Sjostedt, Y., ed., Wissenschaftliche Ergebnisse der schwedischen zoologischen Expedition nach dem Kilimandjaro, dem Meru und den umgebenden MassaisteppenDeutsch-Ostqfirikas, 1905-1906. Stockholm: P. Palmquists AB, pp. 137-144 + 1 pl.

GIBERNAU, M. & DEJEAN, A. 2001. Ant protection of a heteropteran trophobiont against a parasitoid wasp. Oecologia 126: 53-57.

GROVER, C.D., DAYTON, K.C., MENKE, S.B. & HOLWAY, D.A. 2008. Effects of aphids on foliar foraging by Argentine ants and the resulting effects on other arthropods. Ecological Entomology 33: 101-106.

GULLAN, P.J. 2001. Why the taxon Homoptera does not exist. Entomologica 33: 101-104.

HECKROTH, H.P., FIALA, B., GULLAN, P.J., IDRIS, A.H.J. & MASCHWITZ, U. 1998. The soft scale (Coccidae) associates of Malaysian ant-plants. Journal of Tropical Ecology 14: 427-443.

HODKINSON, I.D. 1974. The biology of the Psylloidea (Homoptera): a review. Bulletin of Entomological Research 64: 325-338.

HOLLIS, D. 1973. African gall bugs of the genus Phytolyma (Hemiptera, Psylloidea). Bulletin of Entomological Research 63: 143-154.

--1976. Jumping plant lice of the tribe Ciriacremini (Homoptera: Psylloidea) in the Ethiopian Region. Bulletin of the British Museum (NaturalHistory), Entomology series 34: 3-83.

--1984. Afrotropical jumping plant lice of the family Triozidae (Homoptera: Psylloidea). Bulletin of the British Museum (Natural History), Entomology series 49: 1-102.

--1987. A new citrus-feeding psyllid from the Comoro Islands, with a review of the Diaphorina amoena species group (Homoptera). Systematic Entomology 12: 47-61.

--2004. Australian Psylloidea: jumpingplantlice and lerp insects. Canberra: ABRS.

HOLLIS, D. & MARTIN, J.H. 1997. Jumping plantlice (Insecta: Hemiptera) attacking Lonchocarpus species (Leguminosae), including 'Black Cabbage Bark', in Belize. Journal of Natural History 31: 237-267.

IDECHIIL, O., MILLER, R.H., PIKE, K.S. & HANSEN, L.D. 2007. Aphids (Hemiptera: Aphididae), ants (Hymenoptera: Formicidae) and associated flora of Palau with comparisons to other Pacific Islands. Micronesica 39: 141-170.

JOHNSON, C., AGOSTI, D., DELABIE, J.H., DUMPERT, K., WILLIAMS, D.J., VON TSCHIRNHAUS, M. & MASCHWITZ, U. 2001. Acropyga and Azteca ants (Hymenoptera: Formicidae) with scale insects (Sternorrhyncha: Coccoidea): 20 million years of intimate symbiosis. American Museum Novitates 3335: 1-21.

KABEH, J.D. & JALINGO, M.G.D.S.S. 2007. Pesticidal effect of Bitter Leaf Plant Vernonia amygdalina (Compositae) leaves and Pirimiphos-methyl on larvae of Callosobruchus maculatus (Coleoptera: Bruchidae) and Sitophilus zeamais (Coleoptera: Curculionidae). International Journal of Agriculture & Biology 9: 452-454.

KAPLAN, I. & EUBANKS, M.D. 2005. Aphids alter the community-wide impact of fire ants. Ecology 86: 1640-1649.

KLIMASZEWSKI, S.M. 1964. Psyllidologische Notizen VIII-XI (Homoptera). Annales zoologici 22: 57-67.

LETHIERRY, L. 1890. Description of a new psyllid Diaphorina guttulata Lethierry. Proceedings of the Royal Asiatic Society of Bengal 1890: 165.

LOGINOVA, M.M. 1978. New species of psyllids (Homoptera: Psylloidea). Transactions of the Zoological Institute of the USSR Academy of Sciences [Trudy Zoologicheskogo instituta Akademii nauk SSSR] 61: 30-123. (in Russian)

MALENOVSKY, I. & BURCKHARDT, D. 2009. A review of the Afrotropical jumping plant-lice of the Phacopteronidae (Hemiptera:Psylloidea). Zootaxa 2086: 1-74.

MALENOVSKY, I., BURCKHARDT, D. & TAMESSE, J.L. 2007. Jumping plant-lice of the family Phacopteronidae (Hemiptera: Psylloidea) from Cameroon. Journal of Natural History 41: 1875-1927.

MEKONNEN, K., GLATZEL, G. & SIEGHARDT, M. 2009. Assessments of fodder values of 3 indigenous and 1 exotic woody plant species in the Highlands of Central Ethiopia. Mountain Research and Development 29: 135-142.

NASKRECKI, P. & NISHID, Q.K. 2007. Novel trophobiotic interactions in lantern bugs (Insecta: Auchenorrhyncha: Fulgoridae). Journal of Natural History 41: 2397-2402.

NIELSEN, C., AGRAWAL, A.A. & HAJEK, A.E. 2010. Ants defend aphids against lethal disease. Biology Letters 6: 205-208.

NOVAK, H. 1994. The influence of ant attendance on larval parasitism in hawthorn psyllids (Homoptera: Psyllidae). Oecologia 99: 72-78.

NZIGIDAHERA, B. 2008. Identification des especes vegetales autochtones domesticables d'interet medicinal et alimentaire en Commune Gitega. Bulletin Scientifique de l 'Institut National pour l 'Environnement et la Conservation de la Nature 5: 11-17.

OSSIANNILSSON, F. 1992. The Psylloidea (Homoptera) of Fennoscandia and Denmark. Fauna Entomologica Scandinavia 26: 1-346.

PFEIFFER, M. & LINSENMAIR, K.E. 2000. Contributions to the life history of the Malaysian giant ant Camponotus gigas (Hymenoptera, Formicidae). Insectes Sociaux 47: 123-132.

SHIPPERS, R.R. 2000. African indigenous vegetables. An overview of the cultivated species. Wageningen: CTA, Natural Resource Institute.

TABUTI, J.R.S. & LYE, K.A. 2009. Fodder plant for cattle in Kaliro District, Uganda. African Study Monographs 30: 161-170.

UEDA, S., QUEK, S.P., ITIOKA, T., INAMORI, K., SATO, Y., MURASE, K. & ITINO, T. 2008. An ancient tripartite symbiosis of plants, ants and scale insects. Proceedings of the Royal Society of London 275 (1649): 2319-2326.

VERHEGGEN, F.J., DIEZ, L., DETRAIN, C. & HAUBRUGE, E. 2009. Mutualisme pucerons-fourmis: etude des benefices retires par les colonies d'Aphis fabae en milieu exterieur. Biotechnologie, Agronomie, Societe et Environnement 13: 235-242.

WAY, M.J. 1963. Mutualism between ants and honeydew-producing Homoptera. Annual Review of Entomology 8: 307-344.

Desiree Chantal Alene (1), Champlain Djieto-Lordon (1) and Daniel Burckhardt (2)

(1) Laboratory of Zoology, Faculty of Science, University of Yaounde 1, P.O. Box 812, Yaounde, Cameroon; chantalalene@yahoo.fr, champlain_djieto@yahoo.ca

(2) Naturhistorisches Museum Basel, Augustinergasse 2, CH-4001, Basel, Switzerland; daniel.burckhardt@unibas.ch
TABLE 1
Collecting localities of Diaphorina enderleini in Cameroon.

Localities    Region             GPS Coordinates             Altitude

Nkolondom                 3[degrees]57'07"N 11[degrees]        645 m
                                     29'27"E
Obala                    4[degrees]11'02.0"N 11[degrees]       559 m
                                    34'11.4"E
Okola         Centre     4[degrees]11'39.0"N 11[degrees]       604 m
                                    23'00.1"E
Olembe                   3[degrees]57'49.8"N 11[degrees]       661 m
                                    31'47.7"E
Yaounde                  3[degrees]51'26.8"N 11[degrees]       746 m
                                    29'53.6"E
Koutaba        West      5[degrees]39'00.0"N 10[degrees]      1190 m
                                    48'23.8"E
COPYRIGHT 2011 The Council of Natal Museum
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2011 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Author:Alene, Desiree Chantal; Djieto-Lordon, Champlain; Burckhardt, Daniel
Publication:African Invertebrates
Article Type:Report
Geographic Code:6KENY
Date:Dec 1, 2011
Words:3277
Previous Article:Spinotrachelas montanus sp. n., the first Afromontane representative in the genus (Araneae: Corinnidae).
Next Article:Rediscovery of the "terrible hairy fly", Mormotomyia hirsuta Austen (Diptera: Mormotomyiidae), in eastern Kenya, with notes on biology, natural...
Topics:

Terms of use | Privacy policy | Copyright © 2019 Farlex, Inc. | Feedback | For webmasters