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Survey work from 1992–2001 identified 139 species of hispines at the lowland part of La Selva Biological Station, Costa Rica. The tribe Cephaloleiini was the most speciose with 58 species (41.7%) followed by the Chalepini with 55 (39.5%). The fauna is most closely related to that in South America but with some genera which are more speciose in the Nearctic Region. Plant associations are known for 88 (63.3%) of the species but many of these are merely collecting records, not host plant associations. The first plant associations are reported for Alurnus ornatus, Alurnus salvini, and Acentroptera nevermanni.
Chrysomelidae, hispine, La Selva Biological Station
Hispines comprise half of the subfamily Cassidinae (sensu lato) in the family Chrysomelidae within the order Coleoptera (
The combination of the Hispinae with the Cassidinae (s. str.) has created difficulty in having a handy term to use for these beetles. Several have been proposed but they are cumbersome. Until an easily used term is coined for this group, I continue to use “hispines” in the traditional sense of the genera and species in the former subfamily Hispinae (see
The adult hispine head is opisthognathous, prominent, visible from above, at least to behind the eyes. The frons is prominent, exposed or rarely retracted. The antennae are not retractable and are closely inserted between the eyes. The pronotum is narrower than the elytra; it is more or less quadrangular or trapezoidal, with definite anterior angles which may have a small tubercle. The scutellum is always visible. The elytra lack lateral expansions or have reduced and discontinuous expansions. The margins are usually denticulate or with spines.Larvae are either leaf-miners or free living. They have eight pairs of abdominal spiracles which are well developed and dorsally placed; with the eighth abdominal segment terminal, and with free hind margin (
Ecologically, New World hispines fall into three feeding groups: external feeders; sheath, appressed or rolled-leaf feeders; and leaf-miners. In the Old World, some species have been reported as stem borers in herbaceous or semi-ligneous plants, but this has not been reported from the New World. The biology of few species has been studied; most are not associated with a host plant or plant family.
Methods Study AreaLa Selva Biological Station (10°26'N, 83°59'W) is located in the Atlantic tropical lowlands of Costa Rica and is adjacent to Braulio Carrillo National Park. It is about 100 km from San José. The station comprises 1600 hectares. Habitat is a mosaic of primary forest, early secondary pasture, young secondary forest, abandoned plantations, and selectively logged primary forest. The elevation varies from 35 to 137 m. The station is near the confluence of Rio Puerto Viejo and Rio Sarapiquí. It is owned and operated by the Organization for Tropical Studies (
Rainfall varies from 152.0 mm (March) to 480.7 mm (July) with a total 4 m per year. The dry season is short and not severe (
There are 1744 plant species documented from La Selva. The most speciose families are Pteridophyta, Orchidaceae, Araceae, Rubiaceae, Melastomataceae, Fabaceae, and Piperace (
The Arthropods of La Selva (ALAS) project was started in 1991 (http://viceroy.eeb.uconn.edu/ALAS/ALAS.html). An existing building on the station was remodeled as an entomology laboratory and four technicians were trained in the National Biodiversity Institute (INBio) six-month parataxonomist course. From 1992 until 2000 the project was funded by separate grants from the U.S. National Science Foundation (Biotic Surveys and Inventories Program). From 2001–2006 the focus of the project shifted to a transect survey from La Selva Biological Station to the summit of Volcan Barva. This paper deals only with the results at the La Selva Biological Station.
Daily operations of ALAS were conducted by the parataxonmists under the direction of the principal investigators John T. Longino, Evergreen State College, and Robert K. Colwell, University of Connecticut. Over the course of the project there were over 100 collaborating taxonomists.
Survey MethodsThe ALAS survey consisted of both structured and directed sampling. Structured sampling consisted of black-lights, Malaise and flight intercept traps, and canopy fogging (see
Passive black-lights were utilized from 1993 to 1999 at twelve sites, six on the ground and six in the canopy. Malaise traps were used at sixteen sites from 1993 to 2000. Specimens were collected directly into ethanol and the traps emptied every two weeks. Flight intercept traps were place at sixteen sites and samples were collected every two weeks.
Canopy fogging was conducted in 1993–1994, 1996, and 2000. Sixteen trees were fogged: six trees of the most common species at La Selva, six trees of an intermediate abundant species, and trees of six different species. The tree selected had large crowns with little crown overlap and with good climbing access.
Directed collecting for chrysomelids used beating, sweeping, visual observation, known host plant observation, and use of a mid-canopy shaker net.
Results and discussion Species richness at La SelvaAs of the end on 2001, a total of 139 hispine species have been collected at La Selva Biological Station (see Table 1).
Quantitative inventory by non-specialists using standard sampling techniques can capture about half of the fauna. Individual methods are needed to sample the rest of the community. Sweeping, beating, and host plant sampling are the best methods. Fogging, Berlese funnels, and Malaise traps capture a few species usually not otherwise collected but are not sufficient in themselves to indicate the actual fauna.
Hispines known from La Selva Biological Station and their plant associations (A=adult plant feeding; L=larval host plant; U=unspecified).
Tribe | Genus/Species | Plant association | Plant family | Observation | References |
---|---|---|---|---|---|
Alurnini | Alurnus ornatus Baly | Chamaedorea sp. | Arecaceae | A | New observation |
Alurnini | Alurnus salvini Baly | Chamaedorea sp. | Arecaceae | A | New observation |
Arescini | Chelobasis bicolor Gray | Heliconia sp., Heliconia latispatha Benth., Heliconia tortuosa Griggs, Heliconia cathaeta R. R. Smith | Heliconiaceae | L |
|
Musa sp. | Musaceae | L | |||
Calathea latifolia Klotzsch | Marantaceae | L | |||
Arescini | Chelobasis perplexa Baly | Heliconia imbricata (Kuntze) Baker, Heliconia latispatha, Heliconia pogonantha Cuford., | Heliconiaceae | L |
|
Heliconia irrasa R. R. Smith, Heliconia mariae Hook.Calathea insignis Hort. & Bull. | Marantaceae | L | |||
Cephaloleiini | Aslamidium impurum (Boheman) | Calathea ovata Lindl., Calathea virginalis Linden, Calathea insignis, Calathea micans (Mathieru) Koern. | Marantaceae | A |
|
Heliconia sp. | Heliconiaceae | A |
|
||
Cephaloleiini | Cephaloleia aequilata Uhmann | Unknown | |||
Cephaloleiini | Cephaloleia atriceps Pic | Unknown | |||
Cephaloleiini | Cephaloleia bella Baly | Heliconia imbricata | Heliconiaceae | A |
|
Cephaloleiini | Cephaloleia belti Baly | Calathea insignis, Calathea latifolia Klotzsch, Calathea lutea (Aubl.) GFW Mey., Ischnosiphon pruinosus Peterson | Marantaceae | A |
|
Heliconia imbricata, Heliconia latispatha, Heliconia pogonantha, Heliconia mariae, Heliconia tortuosa, Heliconia catheta, Heliconia irrasa, Heliconia vaginalis Benth., Heliconia wagneriana Peterson | Heliconiaceae | A, L | |||
Cephaloleiini | Cephaloleia championi Baly | Heliconia sp. | Heliconiaceae | A |
|
Cephaloleiini | Cephaloleia congener Baly | Heliconia latispatha, Heliconia tortuosa | Heliconiaceae | A |
|
Cephaloleiini | Cephaloleia consanguinea Baly | Unknown | |||
Cephaloleiini | Cephaloleia costaricensis Uhmann | Chusquea simpliciflora Munro | Poaceae | U |
|
Cephaloleiini | Cephaloleia deficiens Uhmann | Unknown | |||
Cephaloleiini | Cephaloleia dilaticollis Baly | Calathea insignis, Calathea lutea, Calathea inocephala (Kuntze), H. Kennedy, Ischnosiphon pruinosus | Marantaceae | A |
|
Renealmia sp., Renealmia alpinia (Rottb.) Maas | Zingiberaceae | A, L | |||
Cephaloleiini | Cephaloleia disjuncta Staines | Vitex copperi Stanley | Verbenaceae | A | Staines 1998 |
Cephaloleiini | Cephaloleia distincta Baly | Calathea sp. | Marantaceae | A |
|
Heliconia imbricata | Heliconiaceae | A | |||
Cephaloleiini | Cephaloleia dorsalis Baly | Costus sp., Costus pulverulentus C. Presl., Costus malortieanus Wendl., Costus larvis Ruiz. & Pav. | Costaceae | A, L |
|
Renealmia sp. | Zingiberaceae | A | |||
Cephaloleiini | Cephaloleia elegantula Baly | Unknown | |||
Cephaloleiini | Cephaloleia erichsonii Baly | Calathea gymnocarpa H. Kennedy, Calathea inocephala, Calathea leucostachys Hook., Calathea insignis, Calathea latifolia, Calathea lutea | Marantaceae | A |
|
Heliconia sp., Heliconia catheta, Heliconia latispatha, Heliconia mariae, Heliconia vaginalis, Heliconia wagneriana | Heliconiaceae | A | |||
Cephaloleiini | Cephaloleia exigua Uhmann | Unknown | |||
Cephaloleiini | Cephaloleia fenestrata Weise | Ischnosiphon sp., Ischnosiphon cerotus Leos., Pleiostachya pruinosa K. Schum. | Marantaceae | L |
|
Cephaloleiini | Cephaloleia flava Uhmann | Unknown | |||
Cephaloleiini | Cephaloleia fulvolimbata Baly | Unknown | |||
Cephaloleiini | Cephaloleia heliconicae Uhmann | Heliconia sp. | Heliconiaceae | A |
|
Calathea insignis | Marantaceae | S | |||
Cephaloleiini | Cephaloleia histrionica Baly | Unknown | |||
Cephaloleiini | Cephaloleia lata Baly | Chamaedorea tepejilote Liebm., Chamaedorea wendlandiana Hemsl. | Arecaceae | A |
|
Cephaloleiini | Cephaloleia mauliki Uhmann | Heliconia sp. | Heliconiaceae | A | Uhmann, 1930; |
Calathea insignis | Marantaceae | A | |||
Cephaloleiini | Cephaloleia metallescens Baly | Bactris major Jacq., Chamaedorea wendlandiana | Arecaceae | U |
|
Cephaloleiini | Cephaloleia nevermanni Uhmann | Calathea insignis, Calathea macrosepala K. Schumann | Marantaceae | A |
|
Heliconia imbracata | Heliconiaceae | A | |||
Cephaloleiini | Cephaloleia nigricornis (Fabricius) | Unknown | |||
Cephaloleiini | Cephaloleia ornatrix Donckier | Heliconia sp. | Heliconiaceae | A |
|
Cephaloleiini | Cephaloleia placida Baly | Renealmia sp., Renealmia alpinia (Rottb.) Maas | Zingiberaceae | A |
|
Cephaloleiini | Cephaloleia puncticollis Baly | Calathea insignis | Marantaceae | L |
|
Heliconia imbricata, Heliconia latispatha | Heliconiaceae | L | |||
Musa sp. | Musaceae | L | |||
Cephaloleiini | Cephaloleia quadrilineata Baly | Heliconia imbricata, Heliconia latispatha | Heliconiaceae | A |
|
Cephaloleiini | Cephaloleia reventazonica Uhmann | Heliconia latispatha | Heliconiaceae | A |
|
Cephaloleiini | Cephaloleia ruficollis Baly | Unknown | |||
Cephaloleiini | Cephaloleia sallei Baly | Heliconia sp., Heliconia irrasa, Heliconia catheta, Heliconia latispatha, Heliconia mariae, Heliconia vaginalis | Heliconiaceae | L |
|
Renealmia strobilifera | |||||
Calathea inocephala, Calathea latifolia, Calathea lutea, | Zingiberaceae | A | |||
Ishnosiphon pruinosus | Marantaceae | A | |||
Cephaloleiini | Cephaloleia semivittata Baly | Calathea marantifolia Standley | Marantaceae | A |
|
Cephaloleiini | Cephaloleia splendida Staines | Unknown | |||
Cephaloleiini | Cephaloleia stevensi Baly | Heliconia sp. | Heliconiaceae | A |
|
Calathea micans, Calathea inocephala, Calathea latifolia, Ishnosiphon pruinosus | Marantaceae | A | |||
Cephaloleiini | Cephaloleia sulciceps Baly | Unknown | |||
Cephaloleiini | Cephaloleia suturalis Baly | Costus malorticenus H. Wendl., Costus sp., Costus pulverulentus | Costaceae | A |
|
Cephaloleiini | Cephaloleia tenella Baly | Unidentified | Areaceae | A |
|
Cephaloleiini | Cephaloleia trimaculata Baly | ginger lily, Renealmia sp. | Zingiberaceae | A |
|
Costus pulverulentus | Costaceae | A | |||
Cephaloleiini | Cephaloleia trivittata Baly | Calathea haamelii H. Kennedy, Calathea macrosepala | Marantaceae | A |
|
Cephaloleiini | Cephaloleia vicina Baly | Heliconia spp., Heliconia latispatha, Heliconia imbricata | Heliconiaceae | A |
|
Calathea spp., Ischnospihon spp. | Marantaceae | A | |||
Cephaloleiini | Cephaloleia sp. 1 | Unknown | |||
Cephaloleiini | Demotispa nevermanni Uhmann | Unknown | |||
Cephaloleiini | Demotispa strandi Uhmann | Spermacoce sp. | Rubiaceae | U |
|
Calathea sp. | Marantaceae | A | |||
Cephaloleiini | Demotispa sp. 1 | Unknown | |||
Cephaloleiini | Demotispa sp. 2 | Unknown | |||
Cephaloleiini | Homalispa gracilis Baly | Unknown | |||
Cephaloleiini | Homalispa nevernmanni Uhmann | Oenocarpus panamanus Bailey | Arecaceae | U |
|
Cephaloleiini | Homalispa sp. 1 | Unknown | |||
Cephaloleiini | Imatidium rufiventre Boheman | Inga marginata Willd. | Fabaceae | A |
|
Cephaloleiini | Imatidium thoracicum Fabricius | Calathea insignis, Calathea ovata, Calathea virginalis, Calathea lutena | Marantaceae | A |
|
Heliconia latispatha, Heliconia catheta, Heliconia irrasa, Heliconia wagneriana | Heliconiaceae | A | |||
Cephaloleiini | Solenispa leptomorpha (Baly) | Unknown | |||
Cephaloleiini | Stenispa graminicola Uhmann | Unknown | |||
Cephaloleiini | Stenispa sallei Baly | Unknown | |||
Cephaloleiini | Stenispa vespertina Baly | Cyperus sp. | Cyperaceae | L |
|
Cephaloleiini | Stilpnaspis rubiginosus (Boheman) | Unknown | |||
Chalepini | Anisostena pilatei (Baly) | Unknown | |||
Chalepini | Baliosus productus (Baly) | Unidentified | Bignoniaceae | L |
|
Chalepini | Baliosus sp.1 | Urera bogataense ? | Urticaceae | L |
|
Chalepini | Baliosus sp. 2 | Unknown | |||
Chalepini | Carinispa nevermanni Uhmann | Malpighia glabra L., Bunchosia sp. | Malpighiaceae | L |
|
Chalepini | Chalepus amiculus Baly | Unknown | |||
Chalepini | Chalepus angulosus Baly | Unknown | |||
Chalepini | Chalepus assmani Uhmann | Unknown | |||
Chalepini | Chalepus bellulus (Chapuis) | Digitaria eriantha Steud., Oryza sp. | Poaceae | L |
|
Unidentified | Arecaceae | U | |||
Phaseolus sp. | Fabaceae | U | |||
Chalepini | Chalepus brevicornis (Baly) | Unknown | |||
Chalepini | Chalepus consanguineus (Baly) | Lasiacis sp. Unidentified | Poaceae | L |
|
Chalepini | Chalepus digressus Baly | Lasiacis sp. | Poaceae | L |
|
Chalepini | Chalepus nigripictus Baly | Unknown | |||
Chalepini | Chalepus pici Descarpentries & Villiers | Unknown | |||
Chalepini | Chalepus similatus Baly | Unknown | |||
Chalepini | Chalepus tappesi Chapuis | Unknown | |||
Chalepini | Chalepus verticalis (Chapuis) | Phaseolus sp. | Fabaceae | U |
|
Chalepini | Chalepus sp. 1 | Unknown | |||
Chalepini | Chalepus sp. 2 | Unknown | |||
Chalepini | Charistena ruficollis (Fabricius) | Zea mays L., Paspalum conjugatum Berg | Poaceae | U |
|
Glycine max (L.) Merr. | Fabaceae | U | |||
Coffea sp. | Rubiaceae | U | |||
Chalepini | Euprionota aterrima Guérin-Méneville | Unknown | |||
Chalepini | Glyphuroplata nigella Weise | Valota sp., Eriochloa gracilis (Fourn.) Hitchc. | Poaceae | L |
|
Mimosa sp. | Fabaceae | U | |||
Chalepini | Heptispa limbata (Baly) | Cassia grandis L., Cassia fruitcosa Mill., Inga sp., Machaerium sp. | Fabaceae | L |
|
Serjania sp. | Sapindaceae | U | |||
Olyra latifolia | Poaceae | U | |||
Chalepini | Heterispa vinula (Erichson) | Triumfetta josefina Polak, | Tilaceae | L |
|
Apeiba membranacea Spruce ex. Benth. | |||||
Guazuma ulmifolia L. | Sterculiaceae | L | |||
Sida sp. Sida rhombifolia L., Sida carpinifolia K. Schum. | Malvaceae | L | |||
Infigofera sp. | Fabaceae | L | |||
Chalepini | Octhsipa bimaculata Uhmann | Stigmaphyllum lindenianum A. Juss. | Malphigiaceae | L |
|
Chalepini | Octhispa decepta (Baly) | Stigmaphyllum lindenianum | Malphigiaceae | L |
|
Chalepini | Octhispa elegantula Baly | Serjania sp., Paullinia sp. | Sapindaceae | L |
|
Pithecoctenium echinatum K. Schum. | Bignoniaceae | U | |||
Chalepini | Octhispa elevata (Baly) | Paullinia sp. | Sapindaceae | L |
|
Pithecoctenium echinatum | Bignoniaceae | U | |||
Chalepini | Octhispa haematopyga Baly | Colubrina spinosa Don. Sm. | Rhamnaceae | L |
|
Chalepini | Octhispa nevermanni Uhmann | Ochroma lagopus Rowlee | Bombaceae | L |
|
Chalepini | Oxychalepus alienus (Baly) | Centrosema macrocarpum Benth., Cassia fruticosa | Fabaceae | L |
|
Chalepini | Oxychalepus posticatus (Baly) | Cassia oxyphylla Kunth., Cassia hayesiana Standl., Cassia fruticosa | Fabaceae | L |
|
Chalepini | Oxyroplata nr. bellicosa Uhmann | Bamosteroa argentea Spreng. | Malphighiaceae | L |
|
Chalepini | Pentispa explanata (Chapuis) | Pithecoctenium sp. | Bignoniaceae | L |
|
Chalepini | Pentispa fairmairei (Chapuis) | Chusquea sp. | Poaceae | U |
|
Calea urticaefolia (P. Mill.) DC, Calea axillaries DC., Vernonia mollis H.B.K., Verbesina sp., Eupatorium populifolium Hook. & Arn., Clibadium sp., Lepidaploa tortuosa (L.) H. Rob. | Asteraceae | L | |||
Elephantopus spicatus Aubl., Malpighia glabra | Malpighiaceae | U | |||
Serjania sp. | Sapindaceae | U | |||
Chalepini | Pentispa sp. 1 | Unknown | |||
Chalepini | Pentispa sp. 2 | Unknown | |||
Chalepini | Platocthispa championi (Baly) | Piper sp. | Piperaceae | L |
|
Chalepini | Platocthispa emorsitans (Baly) | Calathea sp., Calathea insignis, | Marantaceae | U |
|
Calathea latifolia | |||||
Costus sp. | Costaceae | U | |||
Heliconia catheta, Heliconia irrasa, Heliconia latispatha | Heliconiaceae | U | |||
Chalepini | Platocthispa sp. 1 | Ochroma lagopus | Bombaceae | L |
|
Chalepini | Probaenia armigera (Baly) | Piptocarpha chontalensis Baker in Mart. | Asteraceae | L |
|
Chalepini | Probaenia pici Uhmann | Mikania guaco Humb. & Bonpl. | Asteraceae | L |
|
Chalepini | Probaenia sp. 1 | Arrabidaea chica (Humb. & Bonpl.) Verl. | Bignoniaceae | L |
|
Chalepini | Sumitrosis amica (Baly) | Heliconica sp. | Heliconiaceae | L |
|
Chalepini | Sumitrosis fryi (Baly) | Eupatorium populifolium | Asteraceae | L |
|
Chalepini | Sumitrosis instabilis (Baly) | Unknown | |||
Chalepini | Sumitrosis pallescens (Baly) | Chamaecrista fasciculata (Michx.) Greene, Chamaecrista nictitans (L.) Moench. | Caesalpiniaceae | U |
|
Chalepini | Sumitrosis terminatus (Baly) | Unidentified | Fabaceae | L |
|
Chalepini | Uroplata fusca Chapuis | Pithecactenium echinatum, Arrabidaea mollisima Bureau & K. Schm. | Bignoniaceae | L |
|
Malpighia glabra | Malpighiaceae | U | |||
Chalepini | Uroplata sculptilis Chapuis | Clibadium aspersum DC, Synedrella nodiflora Gaertn. | Asteraceae | L |
|
Inga edalis Mart. | Fabaceae | L | |||
Gouania adenophora Pilg. | Rhamnaceae | L | |||
Chalepini | Uroplata sp. 1 | Unknown | |||
Chalepini | Uroplata sp. 2 | Unknown | |||
Chalepini | Xenochalepus amplipennis (Baly) | Unidentified | Fabaceae | L |
|
Chalepini | Xenochalepus erythroderus (Chapuis) | Coussapoa nymphaeifolia Standl., Coussapoa villosa Poepp. & Endl., Cecropia insignis Liebm, Pourouma bicolor (Standl.) C.C. Berg & E.C. van Heusden | Cecropiaceae | L |
|
Chalepini | Xenochalepus rufithorax (Baly) | Unknown | |||
Prosopodontini | Prosopodonta distincta (Baly) | Unknown | |||
Prosopodontini | Prosopodonta dorsata (Baly) | Costus sp. | Costaceae | U |
|
Chamaedorea wendlandiana, Cryosophila warscewiczii Bartl., Oenocarpus panamanus Bailey | Arecaceae | L | |||
Sceloenoplini | Acentroptera strandi Uhmann | Pentaclethra macroloba Kuntze | Fabaceae | U | New observation |
Sceloenoplini | Ocnosispa humerosa Staines | Conceveiba pleiostemona Donn. Smith | Euphorbiaceae | A |
|
Sceloenoplini | Pseudispa fulvolimbata (Baly) | Unknown | |||
Sceloenoplini | Sceloenopla antennata (Baly) | Unknown | |||
Sceloenoplini | Sceloenopla bicolorata Staines | Sterculia recordiana papyracea E. Taylor | Sterculiaceae | A |
|
Sceloenoplini | Sceloenopla bidentata Staines | Unknown | |||
Sceloenoplini | Sceloenopla erudita (Baly) | Anthurium sp. | Araceae | L |
|
Cupania sp. | Sapindaceae | L | |||
Sceloenoplini | Sceloenopla godmani (Baly) | Clusia flava Planch. & Triana | Clusiaceae | L |
|
Sceloenoplini | Sceloenopla gracilenta (Baly) | Unknown | |||
Sceloenoplini | Sceloenopla lampyridiformis Staines | Unidentified | Viscaceae | L |
|
Sceloenoplini | Sceloenopla longula (Baly) | Unidentified | Araceae | L |
|
Sceloenoplini | Sceloenopla lutena Staines | Virola koschnyi Warb. | Myristicaceae | A |
|
Sceloenoplini | Sceloenopla minuta Staines | Unknown | |||
Sceloenoplini | Sceloenopla multistriata Uhmann | Virola koschnyi | Myristicaceae | U |
|
Phoradendron sp. | Loranthaceae | U | |||
Persea americana P. Mill. | Lauraceae | U | |||
Sceloenoplini | Sceloenopla nevermanni Uhmann | Anthurium sp. | Araceae | L |
|
Cupania sp. | Sapindaceae | L | |||
Sceloenoplini | Sceloenopla nigropicta Staines | Virola koschnyi | Myristicaceae | A |
|
Sceloenoplini | Sceloenopla obscurovittata (Baly) | Philodendron radiatum radiatum Schott, Monstera tenuis K. Koch | Araceae | L |
|
Sceloenoplini | Sceloenopla proxima (Baly) | Unknown | |||
Sceloenoplini | Sceloenopla scherzeri (Baly) | Davilla nitida (Vahl) Kubitzki | Dilleniaceae | L |
|
Persea gratissima Gaertn. | Lauraceae | L | |||
Sceloenoplini | Sceloenopla subparallela (Baly) | Unknown |
The most recent classification of hispines is by
Over 40% of the 139 hispine species and 25% of the genera are in the tribe Cephaloleiini. The Cephaloleiini is a New World tribe of 16 genera and 382 species (
At La Selva Cephaloleia is the most speciose genus with 44 species from La Selva. The biology of various Cephaloleia species has been studied by
Cephaloleia eggs are flat, with a thin chorion; hence they are subject to desiccation. Eggs are laid on host surfaces. Oviposition sites vary among beetle species and host plant. The most common oviposition sites are leaf surfaces, petioles of immature leaves or inflorescence bracts. Eggs hatch in 10 to 20 days. Larvae begin feeding immediately upon the part of the plant on which the egg was laid. Cephaloleia larvae have a water penny-like appearance. They are flat and well adapted to moving between the wet surfaces of Zingiberales leaves, stems, and flowers. Larvae grow very slowly and go through up to eight molts depending on the size of the species and the part of the plant fed on. During their development, larvae of leaf and stem-feeding species utilize several leaves or even leaves on adjacent plants. Inflorescence-feeding larvae are restricted to a single inflorescence. Larvae of Cephaloleia species feed on the plant by dragging their mandibles across the plant surface while they crawl forward. This results in an irregularly shaped feeding scar and a trail of frass. Pupation occurs above ground, usually on the stalk of the host plant and lasts about 20 days. Adult Cephaloleia are found in the same habitat as larvae and cause similar feeding damage. Several different Cephaloleia species as well as other genera may utilize the same leaf, so larval associations require rearing (
Seven other genera of Cephaloleiini containing 14 species are known from La Selva. Most of these species are poorly known and not associated with their host plant.
The tribe Arescini consists of four genera and 17 species from the Neotropics (
Chelobasis perplexa is known to feed on Calathea insignis Hort. & Bull. (Marantaceae) and Heliconia imbricata (Kuntze) Baker in Costa Rica (
The tribe Alurnini consists of six genera and 29 species (
The New World tribe Prosopodontini contains the genus Prosopodonta Baly with 26 species found from Nicaragua to Ecuador (
Two species, Prosopodonta distincta (Baly) and Prosopodonta dorsata (Baly), have been collected at La Selva.
The tribe Sceloenoplini contains five genera and 299 species, with 154 species in the genus Sceloenopla Chevrolat (
The tribe Chalepini consists of 55 genera and nearly 1000 species in the New World (
Hispines can be found in most non-aquatic habitats at La Selva. There are 46 species which feed on rolled leaves and inflorences of Zingiberales. This one feeding guild accounts for 33% of the hispine species known from La Selva.
Most hispines species seem to be restricted to understory to mid-canopy level plants. Work on hispines has shown many species to be monophagous or narrowly oligophagous. These species are found mostly in relation to their host plants. Other hispines are broadly oligophagous or polyphagous and can be found in many habitats. A continuing problem in inventory work is determining if the specimen collected was actually on its host plant or was a transient. Much of the earlier literature on host associations does not specify whether the insect was feeding as an adult, was breeding on the plant, or merely resting on it.
Relatively few species have only been collected from canopy fogging but these have been almost always undescribed species. Some of these species may actually be breeding in epiphytes rather than the fogged tree. Calliaspis rubra (Olivier) and Acentroptera pulchella Guérin-Méneville have been associated with bromeliads (Bromeliaceae) in South America (
Most of the La Selva hispine fauna is closely related to South American species. Some species have distributions throughout the Neotropics such as Aslamidium impurum (Boheman), Charistena ruficollis (Fabricius), and Imatidium thoracicum Fabricius. However, the genera Anisostena Weise and Glyphuroplata Uhmann are most speciose in the Nearctic and the La Selva specimens are part of the southern extension of the genera (
Many species appear to be Central American Atlantic lowland wet forest endemics but with congeners in South America. Ocnosispa humerosa Staines, Sceloenopla bicolorata Staines, Sceloenopla bidentata Staines, Sceloenopla lutena Staines, and Sceloenopla nigropicta Staines appear to fall into this category.
Specimen identificationOf the 139 hispine species known from La Selva, 125 (89.9%) are described species with published names, one is a morphospecies which is known to be new, and 14 (11.2%) are morphospecies in groups whose taxonomy is too poorly known to determine whether they are new or not.
La Selva hispine species can be identified using the key to the genera in
What do hispines eat? A little more than half (63.3%) of La Selva hispines have any host plant association. Many of these have only been noted as being collected on a plant rather than actually feeding on it (listed as adult on Table 1). Since hispines are intimately tied to their host plant, determining the food plant will give a much better picture of their distribution and abundance. Additional leaf-miner rearing work such as that of
What is the biology and ecology of hispines? Very little work has been done on the biology and ecology of La Selva hispines.
What are the hispine host plant interactions?
How do pathogens, predators, and parasitoids influence hispine populations? Hispines are parasitized by various wasps and flies (
How do hispine populations and distributions change over time?
I thank Jack Longino, Evergreen State College, and Henry Hespenheide, University of California at Los Angeles, for inviting me to participate in the ALAS project, Danilo Brenes, Ronald Vargas, Maylin Paniagua, and Nelci Oconotrillo, the ALAS parataxonomists, for their work in specimen collecting and processing. Funding for field work as provided by NSF grants BSR-9025024, DEB 9401069, and DEB 9706976.