Natalia von Ellenrieder

California Department of Food and Agriculture | cdfa · Plant Pest Diagnostic Center

Monograph The genus Tetralicia Harrison (Hemiptera: Sternorrhyncha: Aleyrodidae) in California, U.S.A., with the description of five new species and a redescription of

Based on the examination of an extensive series of specimens and available type material, three out of the six species of Aleyrodes Latreille (Hemiptera: Sternorrhyncha: Aleyrodidae) described from California, A. diasemus Bemis, 1904, A. essigi Penny, 1922, and A. osmaroniae Sampson, 1945, are newly synonymized under A. spiraeoides Quaintance, 1900...

Aim Insects are one of the least studied taxa, with most species lacking basic ecological and biogeographical information. This problem is particularly acute in the tropics, where low sampling effort hampers accurate estimates of species richness at scale and potentially confounds efforts to identify the drivers of biogeographical gradients. Here,...

We provide updated synonymies for various genera and species of Neotropical Zygoptera based on examination of specimens and literature accompanied by justifications and supported by illustrations. The following generic synonyms are proposed: Austrotepuibasis Machado & Lencioni, 2011 and Pseudotepuibasis Stand-Pérez & Pérez-Gutiérrez, 2020 are junio...

Nipaecoccus viridis (Newstead) is an exotic pest currently limited to Florida and Texas in the continental USA. In a previous study, we tested 57 mealybug species in Florida and showed only N. viridis turned green in a potassium hydroxide solution (10% KOH), providing a rapid species confirmation test for all life stages. The unanswered question wa...

A total of 73 species of Argia Rambur, 1842 are reported as present from Mexico, Central America and the Lesser Antilles, of which five are new to science and are described here: Argia annae n. sp. (holotype ♂: MEXICO, Veracruz, Puente Texolo, roadside seepages near bridge, 19.4028°N, 96.9867°W, 1065 m, 17 June 2009, Rosser W. Garrison & Natalia vo...

Metaleptobasis daiglei sp. nov. (Holotype ♂: PANAMA, Colón Province, Portobelo District, palmetto/ banana swamp, west side of Río Piedras near town of María Chiquita, 10 am (9°27'4''N, 79°44'18''W, 10 m), 2 June 2022, Jerrell J. Daigle leg., in FSCA) is described, figured, and distinguished from other species. Both male and female can be recognized...

A new species of Aleurocybotus Quaintance & Baker, 1914 found on grasses in the Mojave Desert in California, U.S.A., is described, figured, and diagnosed from its congeners. It can be easily recognized from A. occiduus Russell, 1964, the only other species of this genus present in California, by the copious white woolly wax secretions of its pupari...

In this study, molecular and morphological analysis of Palmicultor Williams, 1963 (Hemiptera: Coccomorpha: Pseudococcidae) mealybugs, intercepted on plant material entering California and collected in Florida, provides evidence for the existence of a cryptic species under the taxon currently known as P. palmarum (Ehrhorn, 1916). A characterization...

The specific name Pseudococcus variabilis von Ellenrieder & Watson, 2016 is preoccupied by Pseudococcus variabilis Hall, 1924, currently considered a junior synonym of Planococcus lindingeri (Bodenheimer, 1924) (Hemiptera: Coccomorpha: Pseudococcidae). Thus, Pseudococcus variabilis von Ellenrieder & Watson, 2016 is invalid under the law of homonymy...

The name Lestes dryas Kirby, 1890, is potentially threatened by its senior objective synonym, Agrion forcipula Charpentier, 1825. The purpose of this publication is to reverse their order of precedence preserving the current widespread usage of the junior name in accordance with Article 23.9.1 of the International Code of Zoological Nomenclature.

Phenacoccus peruvianus Granara de Willink, in Granara de Willink & Szumik, 2007, the bougainvillea mealybug (Hemiptera: Coccomorpha: Pseudococcidae), is recorded from California and North America for the first time. Comparison of the morphology of the adult females from California with those described from South America, found a closer match with s...

A ten day collecting trip to Napo province was conducted between January 13 and 23, 2020, visiting localities where W. C. Macintyre originally collected Argia schneideri Garrison & von Ellenrieder, 2017 between 1935 and 1942, with the intention of documenting its life habits and obtaining photographs in life. A total of 65 odonate species in 36 gen...

The Odonata collection deposited at the Museum of Comparative Zoology (MCZ) includes specimens of 634 taxa labeled as types. Fifteen of these have been incorrectly labeled as types (pseudotypes) and eight are apparently lost, leaving a total of 611 types currently deposited at MCZ. From these, 489 represent primary namebearing types (syntype/s, hol...

The adult female and male of Scaptococcus occultans sp. n. (Hemiptera: Coccomorpha: Pseudococcidae), a new mealy-bug species from the southwestern United States, are described and illustrated, as well as the male of S. milleri cKenzie. Females of the new species can be recognized by their unmodified prothoracic legs, anal ring with two rows of cell...

Treinta y una especies de Argia son registradas de Ecuador, de las cuales dos, A. huanacina Förster y A. jocosa Hagen, constituyen nuevos registros para el país, y cinco son nuevas para la ciencia y son descriptas aquí: Argia acridens n. sp. (Holotipo ♂: ECUADOR, Prov. Manabí, 79 km al oeste de Santo Domingo de los Colorados, 0°20' S, 79°46' O, 260...

Odonata species from the Upper Berbice watershed in south-central Guyana were surveyed along various forested blackwater creeks, associated flooded forest, side pools, and the Berbice River, for three days at the Berbice River camp and surroundings and for four days at the Berbice White Sands camp and surroundings. A total of 72 odonate species wer...

The adult female and male of Nipaecoccus bromelicola sp. n. are described, based on specimens on bromeliads in Cali-fornian nurseries and intercepted from Mexico and Guatemala, countries believed to be within the native range of this species. The male of N. floridensis Beardsley is also described, illustrated, and diagnosed from known congeners. An...

Neosimmondsia esakii Takahashi, 1939 is redescribed based on adult female syntypes and additional adult females from the Federated States of Micronesia. One of the examined syntypes is designated as lectotype. A complete illustration of the adult female is provided for the first time, and its diagnosis is amended. The first-instar nymph is illustra...

A synopsis of the Neotropical genus Protoneura is presented, including an identification key to its 22 species accompanied by illustrations of diagnostic characters, and characterizations, diagnoses, and distribution maps for all species. A lectotype is designated for P. peramans Calvert in Skinner, 1902.

The Madeira mealybug, Phenacoccus madeirensis Green, 1923 (Hemiptera: Coccomorpha: Pseudococcidae) is a highly polyphagous, invasive pest species that is actively extending its geographical range. There has been some uncertainty as to how to separate it reliably from a less invasive species, P. gossypii Townsend & Cockerell, 1898, due to the occurr...

Dragonflies and damselflies were studied during a Biodiversity Assessment Team (BAT) expedition to the Kaieteur Plateau and Upper Potaro area in western central Guyana. Eighty species, representing over 40% of the species currently known from Guyana, were registered at forest rivers, creeks, swamps, pools, and trails. In particular, 58 species were...

The first checklist of the odonates from Guyana is presented, including 46 new species records. Literature sources are provided for all species and for the new records full locality data, color scans or field photographs, taxonomic and biological notes, and maps for those species whose distribution range is increased considerably.

Seven new species of Argia are described, five of which occur in Costa Rica: Argia calverti n. sp. (Holotype ♂, Costa Rica, Cartago Prov., Tapantí Reserve, 1,310 m, 6 vii 1963, F. G. Thompson leg., in FSCA); Argia carolus n. sp. (Holotype ♂, Costa Rica, San José Prov., El Rodeo Biological Reserve, 7 km W of Villa Colón, 9°54' N, 84°16' W, 561 m, 10...

A mealybug species that feeds on Agave spp., Pseudococcus variabilis sp. n. (Hemiptera: Coccomorpha: Pseudococcidae), is described from North America. Its entry into the United States was likely via the horticultural trade on its host plants in the genus Agave (Liliales: Agavaceae). Descriptions and illustrations of the adult female and male, diagn...

Two mealybug species (Hemiptera: Coccomorpha: Pseudococcidae) feeding on Proteaceae in U.S.A. (California), Portugal and Australia were studied: Paracoccus leucadendri Mazzeo & Franco in Mazzeo, Franco & Russo, 2009, described from Portugal, and Phenacoccus hakeae Williams, 1985, described from Australia. A comparative morphological analysis was ma...

A morphological, molecular, and behavioural characterization of Rhionaeschna galapagoensis is presented, based on a series of specimens and observations from San Cristóbal Island, Galápagos, including both adults and larvae. Several of the characters proposed earlier to distinguish between the adults of this species and its closest relative, R. els...

During a biodiversity survey in the forest of central Guyana, an adult male of the damselfly Hetaerina caja dominula Hagen in Selys was found parasitized by a tachinid larva. This constitutes the first record of a parasitoid on an adult odonate, and of an odonate as host of a tachinid larva. CO1 DNA sequencing of the larva placed it closest to the...

This revision of all 21 species of Argia known to occur within the Guiana Shield includes descriptions of new species, synonymies, keys to both sexes based primarily on morphology of caudal appendages and genital ligula in males and of the mesostigmal plates in females, diagnoses accompanied by illustrations and distribution maps for all species. T...

In the course of two field trips to Northern Vietnam during March 2012 and June 2014 the dragonflies and damselflies of three National Parks (Cuc Phuong, Tam Dao, and Ba Be) and one Biodiversity Station (Melinh) were sampled. A total of 90 species of odonates in 60 genera and 15 families was recorded, including two new records for Vietnam: Macromia...

A probably adventive mealybug species, Paracoccus gillianae sp. n. is described from North America. Its entry into the United States was likely to have been via the horticultural trade of Agave spp. (Liliales: Agavaceae) and other host plants in the family Agavaceae. Illustrations of the adult female and male, and diagnosis from congeners in the Ne...

Nephepeltia flavipennis (Holotype: Brazil, Rondônia, Governador Jorge Teixeira Municipality, Fazenda Rancho Grande, 10°31'48''S, 62°48'0''W, 165 m, J. Wiseman leg., in MNRJ) is described from the Amazon region of W Brazil, Ecuador, and N Peru. A lectotype is designated for N. aequisetis Calvert, 1909. Nephepeltia chalconota is considered to be a ju...

Examination of over 1,400 specimens of the neotropical genus Metaleptobasis Calvert, 1907, including primary types or paratypes of 18 of the 20 currently available species names and large series of specimens including pairs in tandem and copula, allowed me to unequivocally associate older names with species, distinguish between specific and intrasp...

A two week trip to Costa Rica was conducted between 26 May and 8 June 2013, sampling odonates in several provinces along the center to the pacific southern portion of the country. A total of 86 species in 34 genera were found, including 16 species of the genus Argia. Lists of all species by locality, photographs of live specimens, and illustrations...

An updated classification and numbers of described genera and species (until 2010) are provided up to family level. We argue for conserving the family-group names Chlorocyphidae, Euphaeidae and Dicteriadidae, as well as retaining Epiophlebiidae in the suborder Anisozygoptera. Pseudostigmatidae and New World Protoneuridae are sunk in Coenagrionidae...

Cycad aulacaspis scale (Aulacaspis yasumatsui Takagi (Hemiptera: Diaspididae)) is native to Thailand and Vietnam. Since the early 1990s it has been spreading around the world due to the trade in cycad plants for ornamental use. Infestation by this scale can kill cycads in only a few months. Its accidental introduction to Florida endangered the orna...

The levis and ferruginea groups of Orthemis are redefined. Six new species of Orthemis are described: O. aciculata sp. nov. (♂ holotype: Surinam, Para Dist., road near forest, Zanderij I (5°32′ N, 55°10′ W), 17 January 1957, leg. J. Belle [RMNH]), O. celata sp. nov. (♂ holotype: Brazil, Pará State, Rio Gurupí, Canindé (0°30′57′ ′ S, 51°14′00′ ′ W),...

This synopsis of adult Triacanthagyna includes the revalidation of two species thought to be synonyms (T. nympha and T. obscuripennis), the description of a new species (T. williamsoni; type locality: Peru, Tingo María), keys to both sexes, illustrations of diagnostic characters, and distribution maps of all species. A phylogenetic assessment of th...

The placement of Leptagrion flammeum in Aeolagrion is confirmed to be incorrect; comparison with all other described genera of New World Coenagrionidae shows that this species does not belong in any of them. A new genus, Phoenicagrion (type species L. flammeum), is here described to include L. flammeum and a new species, P. paulsoni (holotype ♂: Pe...

This synopsis of adult Phyllopetalia includes the synonymy of four genera (Phyllopetalia senior subjective synonym of Rheopetalia, Odontopetalia, Eurypetalia and Ophiopetalia), four species and one subspecies (P. apicalis senior subjective synonym of Rheopetalia rex and R. apicalis decorata, and P. pudu senior subjective synonym of Ophiopetalia ara...

This study includes the description of a new species of the genus Andinagrion, A. garrisoni (holotype: Argentina, Río Caldera, Salta prov., 11 xi 2005, deposited at MLP), both from its adult and larval stages, a diagnosis of all known species, including a key to adults, synonymic lists, illustrations of diagnostic characters, and distribution maps.

Gomphomacromia mexicana is shown to be a junior synonym of G. chilensis based on a comparison of the holotype male with the original description of G. chilensis and specimens identified as that species from Chile. Examination of a large series of specimens from central and southern Chile and Argentina identified both as G. paradoxa and G. etcheverr...

Odonata were studied during a Rapid Assessment Program (RAP) survey of the Kwamalasa-mutu area in SW Suriname. Ninety-four species, representing one-third of the species known from Suriname, were registered at forest rivers, streams, and swamps; in particular 57 species were found at the Kutari River Site (Camp 1), 52 at the Sipaliwini River Site (...

Chrysobasis is synonymized with Leptobasis. The latter is diagnosed by the combination of rounded frons, CuP reaching hind margin of wing, CuA relatively short, and supplementary pretarsal claw reduced to vestigial, and by the presence on the distal segment of the genital ligula of a pair of chitinized, flap-like, movable processes directed posteri...

Odonates of small temporary pools, marshes, large permanent ponds, oxbow lakes, dams, and perennial rivers were sampled in the semiarid Chaco biome of NW Argentina between September 2007 and December 2008. Information from 35 localities yielded 60 species; presence/absence information of species was recorded in a spatial-relational database. Alpha,...

A short description of the entomological collection of the Natural History Museum of Salta, Argentina, is provided, with a listing of the type specimens held here (34 holotypes, 6 syntypes, 9 allotypes, and 55 paratypes).Se proporciona una breve descripción de la colección entomológica del Museo de Ciencias Naturales de Salta, Argentina, y se inclu...

Five new species of the levis-group of Orthemis, O. cinnamomea (holotype ♂ in USNM: Peru, Madre de Dios Department, Explorer's Inn on Río Tambopata, 12°50′S, 69°17′W, 300 m, 23 vii 2002, leg. D. Paulson & N. Smith), O. coracina (holotype ♂ in USNM: Ecuador, Sucumbios Province, Limoncocha, 00°24′S, 76°36′W, 300 m, 23 vii 1977, leg. D. Paulson), O. h...

The status and trends of global biodiversity are often measured with a bias towards datasets limited to terrestrial vertebrates. The first global assessment of an insect order (Odonata) provides new context to the ongoing discussion of current biodiversity loss. A randomly selected sample of 1500 (26.4%) of the 5680 described dragonflies and damsel...

Metaleptobasis cyanolineata is transferred to Mesoleptobasis and a new species, Mesoleptobasis elongata, is described. The genus is diagnosed by the combination of rounded frons, highly modified pronotum with long processes at least in males, pterothoracic color pattern lacking dark mid-dorsal stripe, pretarsus with supplementary tooth vestigial or...

A list of 70 species known to occur in Uruguay is given. Fourteen species are new country records: Mnesarete pruinosa (Hagen in Selys) (Calopterygidae), Acanthagrion lancea Selys, A. peruvianum Leonard, Argia serva Hagen in Selys, and Oxyagrion chapadense Costa (Coenagrionidae), Neoneura ethela Williamson (Protoneuridae), Progomphus costalis Hagen...

The family Amphipterygidae comprises a group of moderately large, robust species of pan-tropical damselflies. It was first recognized by Selys (1853) as his "6me legion" based on the description of a unique female which he named "Amphipteryx agrioïdes." Its provenance ("Colombie. [Collect. Selys.]") has remained a mystery as no specimens of this ge...

Odon. of streams, small rivers and ponds were sampled in the Yungas cloud forest of NW Argentina, and presence / absence information of spp. from samples and from examination of collections was recorded in a spatial-relational data base. Alpha, beta, and gamma diversity and total species richness expected for the area were estimated. Similarity in...

Se halla que las especies incluídas actualmente en Telagrion Selys pertenecen a tres géneros distintos; Telagrion sensu stricto, monotÍpico, incluyendo solo la especie tipo T. longum Selys, Schistolobos gen. nov., también monotípico, incluyendo a Telagrion boliviense Daigle, y Aceratobasis Kennedy, revivido para incluir a Metaleptobasis cornicauda...

A short description of the entomological collection of the Natural History Museum of Salta, Argentina, is provided, with a listing of the type specimens held here (34 holotypes, 6 syntypes, 9 allotypes, and 55 paratypes).

FIGURE 3. Pronotum, lateral view. (a) Mesoleptobasis acuminata, male Peru, Explorama Lodge; (b) M. cantralli, male paratype, Brazil, Porto Velho; (c) M. cyanolineata, male paratype, Surinam, Mungatapoe; (d) M. cyanolineata, female paratype, Surinam, Mungatapoe; (e) M. elongata, holotype; (f) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 10. Male wings. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho.

FIGURE 11. Male wings. (a) Mesoleptobasis cyanolineata, paratype, Surinam, Mungatapoe; (b) M. elongata, paratype, Brazil, Rio Curari; (c) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 20. Male habitus, lateral view (to scale). (a) Mesoleptobasis elongata, holotype; (c) M. incus, Brazil, Porto Velho.

FIGURE 12. Female wings. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho.

FIGURE 2. Pronotum, dorsal view. (a) Metaleptobasis bicornis female holotype, Amazonas; (b) M. diceras, female syntype, Brazil, Pará; (c) M. manicaria, male Trinidad, SE of Valencia; (d) M. mauffrayi, male Peru, Explorama Lodge.

FIGURE 6. Female anterior portion of mesanepisterum, medio-dorsal view. (a) M. cantralli, paratype, Brazil, Porto Velho; (b) Metaleptobasis bicornis, holotype, Amazonas; (c) M. diceras, syntype, Brazil, Pará; (d) M. quadricornis, holotype, Brazil, Pará.

FIGURE 9. Metapretarsus, lateral view. (a) Mesoleptobasis acuminata, male Peru, Explorama Lodge; (b) Metaleptobasis bicornis, female holotype, Amazonas.

FIGURE 13. Female wings. (a) Mesoleptobasis cyanolineata, paratype, Surinam, Mungatapoe; (b) M. elongata, allotype; (c) M. incus, paralectotype, Brazil, Rio Autaz.

FIGURE 14. Genital ligula, ectal view. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho; (c) M. cyanolineata, paratype, Surinam, Mungatapoe; (d) M. elongata, holotype; (e) M. incus, lectotype, Brazil, Rio Autaz.

FIGURE 19. Male S 10, dorsal view. (a) Mesoleptobasis cantralli, paratype, Brazil, Porto Velho; (b) M. elongata, Brazil, Rio Curari; (c) M. incus, lectotype, Brazil, Rio Autaz; (d) detail right cercus, M. elongata, Brazil, Rio Curari; (e) detail right cercus, M. incus, Brazil, Porto Velho.

FIGURE 16. Female S 8 – 10, lateral view. (a) Mesoleptobasis acuminata, Peru, Explorama Lodge; (b) M. cantralli, paratype, Brazil, Porto Velho; (c) M. cyanolineata, paratype, Surinam, Mungatapoe; (d) M. elongata, holotype; (e) M. incus, paralectotype, Brazil, Rio Autaz.

FIGURE 21. Distribution of Mesoleptobasis.

A new species (holotype ♂ in MLP: Argentina, Formosa province, Parque Nacional Río Pilcomayo, Laguna Blanca, marshes next to pond, 25°10′29″S, 58°07′44″W, 74 m a.s.l., 16/17 ii 2008, leg. NvE, RWG) is described, diagnosed and illustrated, and a key, diagnostic illustrations, and distribution maps are provided for the three species of the genus occu...

Based on examination of the syntype female of Telagrion fulvellum which we designate as lectotype, and its comparison with additional male and female specimens from Peru, this species is assigned to a new genus, Dolonagrion, and both sexes are redescribed, diagnosed, and illustrated.

A new genus, Drepanoneura (type species Drepanoneura loutoni sp. nov.), is described to include Epipleoneura letitia Donnelly, Protoneura peruviensis Fraser, and six new congeneric species from South America: D. donnellyi, D. flinti, D. janirae, D. loutoni, D. muzoni, and D. tennesseni. Drepanoneura is similar to Epipleoneura and Epipotoneura in ve...

In this paper we re-evaluate Cyanallagma Kennedy 1920, which currently includes 15 species, and we address another five species that share diagnostic characters with some of them but are currently placed within Leptagrion Selys 1876, Mesamphiagrion Kennedy 1920, and Telagrion Selys 1876. A new genus, Oreiallagma, is described to include five specie...

In this paper we re-evaluate Cyanallagma Kennedy 1920, which currently includes 15 species, and we address another five species that share diagnostic characters with some of them but are currently placed within Leptagrion Selys 1876, Mesamphiagrion Kennedy 1920, and Telagrion Selys 1876. A new genus, Oreiallagma, is described to include five specie...

Odonata de los Esteros del Iberá (Corrientes, Argentina): inventario preliminar y biodiversidad RESUMEN. Se presenta un inventario preliminar de los Odonata de los Esteros del Iberá, así como su área de influencia (Corrientes, Argentina). Distintos tipos de ambientes fueron muestreados en siete localidades. Se registraron setenta y cinco especies a...

Examination of diagnostic features for all known species of Acanthagrion and Oxyagrion shows color pattern alone not to be a reliable diagnostic character. Both genera are redefined based on morphological characters, and some color pattern characters which further aid in their diagnoses. A preliminary phylogenetic analysis indicates both genera are...

An updated check! ist of the Odonata spp. known to occur in Argentinais presented along with distributional information by province. 27 spp. are removed from previous listings, and 32 new records are added, bringing the total number of spp. to 27 1. Of the new records, 14 correspond to new spp. currently under description. The distribution of the 1...

The species currently included in Telagrion Selys are found to belong to three different genera: Telagrion sensu stricto, monotypic, including only the type species T. longum Selys, Schistolobos gen. nov., also monotypic, including Telagrion boliviense Daigle, and Aceratobasis Kennedy, resurrected to include Metaleptobasis cornicauda Calvert (type...

Se revalida Argentagrion Fraser, considerado actualmente como un sinónimo de Homeoura Kennedy; ambos géneros son rediagnosticados y se proporcionan ilustraciones, claves y mapas para sus especies. Se considera que Ischnura sobrina Schmidt pertenece a Homeoura y una nueva especie, H. obrieni , es descripta, resultando un total de cinco especies incl...

Se presenta un inventario preliminar de los Odonata de los Esteros del Iberá, así como su área de influencia (Corrientes, Argentina). Distintos tipos de ambientes fueron muestreados en siete localidades. Se registraron setenta y cinco especies agrupadas en 33 géneros y siete familias, de las cuales tres géneros y 10 especies son nuevos registros pa...

FIGURE 1. Head, posterior view. (a) Cyanallagma interruptum, male, Argentina, Queñi; (b) Mesamphiagrion laterale, male, Colombia, La Pica.

FIGURE 3. Head and thorax, dorsal and lateral view respectively (a – e), detail metepimeron, lateral view (f). (a) Cyanallagma nigrinuchale, male, Brazil, Lagoa dos Cordois; (b) C. ferenigrum, male holotype, Brazil, Utiariti; (c) Mesamphiagrion ecuatoriale, male holotype, Ecuador, Archidona-Baeza; (d) M. dunklei, male paratype, Ecuador, Coyuja; (e)...

FIGURE 5. Color pattern of head, dorsal view, and body, lateral view, Oreiallagma thelkterion, male paratype, Venezuela, Monte Zerpa.

FIGURES 25 – 29. Posterior lobe of prothorax. (25) Oreiallagma prothoracicum, male paratype, Ecuador, Intaj, (a) dorsal view, (b) medio-dorsal view; (26), O. oreas, male holotype, Colombia, Monte Socorro, dorsal view; (27) O. acutum, male lectotype, Bolivia, Río Zongo, dorsal view; (28) O. quadricolor, Peru, (a – b) posterior lobe of prothorax, mal...

FIGURES 60 – 69. Male caudal appendages, lateral view, (61 a; 65 a) lateral view, (61 b; 65 b) latero-posterior view with cercus rotated dorso-externally. (60) Mesamphiagrion occultum, Colombia, Chingaza; (61) M. ovigerum, Colombia (a) Arcabuco, (b), holotype, Bogotá; (62) M. ecuatoriale, holotype, Ecuador, Archidona-Baeza; (63) M. risi, holotype,...

FIGURES 85 – 89. Male caudal appendages, medio-dorsal view, (86 b) medial view of cercus, (88 b) medio-ventral view, (88 c) dorsal view. (85) Oreiallagma acutum, lectotype, Bolivia, Río Zongo; (86) O. thelkterion, paratype, Venezuela, Monte Zerpa; (87) O. prothoracicum, holotype, Ecuador, Intaj; (88) O. quadricolor, holotype, Peru, Santa Ana; (89)...