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Nymphs of H. vicinus. (A) First instar. (B) Second instar. (C) Third instar. (D) Fourth instar. (E) Fifth instar. (Online Þgure in color.)
Source publication
A new genus of Naucoridae inhabiting a waterfall in Tamil Nadu state in southern India is described. Pogonocaudina Sites and Zettel NEW GENUS is diagnosed by a dense fringe of long hairs around the perimeter of the posterior abdominal segments, and by both males and females with a single segmented front tarsus with two pretarsal claws. Despite the...
Contexts in source publication
Context 1
... vicinus Montandon: in Montandon 1910: 655Ð 656. (Fig. 2A). Length, 2.88 0.04 mm; width, 1.72 0.02 mm (n 2). Body elongate-oval, general appearance dorsoventrally ßattened, greatest width at meso-and metanota; overall convex dorsally, concave ventrally; immaculate yellowish dorsally and ventrally; dorsally with pale ...
Context 2
... Instar (Fig. 2B). Length, 3.90 mm; width, 2.32 mm (n 1). Greatest body width at metanotum. General body coloration yellowish brown, no longer immaculate. Head, nota, and abdominal terga with scattered brown punctures; brown coloration associated with punctation becoming conßuent in areas on vertex and near middle of each notum. Nota with punctation ...
Context 3
... Instar (Fig. 2C). Length, 4.80 0.12 mm; width, 2.91 0.05 mm (n 3). Metanotum longest of nota at midline; pro-and mesonota subequal, each 0.8 times the length of metanotum. Lateral margin of mesonotum, including wing pad, 1.1 times the length of exposed part of lateral margin of metanotum. Posterolateral margins of abdominal segments IIIÐVII with group ...
Context 4
... Instar (Fig. 2D). Length, 6.00 0.08 mm; width, 3.71 0.03 mm (n 5). Metanotum longest of nota at midline, 1.2 times the length of pronotum, 1.1 times the length of mesonotum. Lateral margin of mesonotum, including wing pad, twice the length of exposed part of lateral margin of ...
Context 5
... Instar (Fig. 2E). Length, 7.79 0.12 mm; width, 5.12 0.08 mm (n 3). Mesonotum longest of nota at midline, 1.1 length each of pro-and metanota. Lateral margin of mesonotum, including wing pad, completely overlapping lateral margins of metanotum and often abdominal terga I, II, and 20Ð30% of ...
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Citations
... Este último género no ha sido registrado en Costa Rica. El género Interocoris La Rivers (1974) pertenece a la subfamilia Laccocorinae, con diez géneros alrededor del mundo, de los cuales tres tienen representantes en el continente americano (Sites et al., 2011). Decarloa La Rivers se encuentra en Haití y República Dominicana (Ludwick & Sites, 2015), Ctenipocoris en Sudamérica y Costa Rica (Herrera, 2013b) y el monotípico Herrera, F., Solano-Ulate, D., & Springer, M. (2020). ...
Introducción:
La familia Naucoridae, de distribución mundial, se encuentra dividida en cinco subfamilias, de las cuales cuatro de ellas y seis géneros han sido reportados hasta la fecha en Centroamérica. El género Interocoris (Laccocorinae) es monotípico y anteriormente sólo se había registrado en México.
Objetivo:
Reportar el primer registro confirmado de I. mexicanus para Costa Rica y Centroamérica, así como proporcionar descripciones complementarias de los adultos, ninfa V y microhábitat asociado.
Métodos:
Se realizó una comparación de la morfología externa (medidas y proporciones) de los ejemplares recolectados en dos localidades de Costa Rica con la información y el material tipo de I. mexicanus, recolectado en México.
Resultados:
A partir de la comparación morfológica se obtuvo una identificación positiva de la especie, por lo que se reporta por primera vez a I. mexicanus de Costa Rica y Centroamérica. Los especímenes recolectados coincidieron en general con las mediciones y relaciones del material tipo de I. mexicanus, con ligeras diferencias, algunas de ellas incluso reportadas para los ejemplares de la serie tipo en la descripción original. Se presentan descripciones complementarias de adultos y se describe por primera vez la morfología de la ninfa V.
Conclusiones:
Con este nuevo registro se expande significativamente el rango del género Interocoris, así como de la especie I. mexicanus desde México a Costa Rica. Además, se aumentan a seis los géneros de Naucoridae en Costa Rica y a siete en Centroamérica.
... Although most members of the family are known to be inhabitants of standing water or streams, recent studies have revealed new genera associated with waterfalls and other atypical habitats (Sites & Vitheepradit 2007, Sites et al. 2011. Hygropetric habitats are typical situations for many beetles and several "semiaquatic" Heteroptera, including many species of Hebridae and Mesoveliidae. ...
... Specifically, in Indochina, Namtokocoris can be found completely immersed beneath sheeting water of waterfalls but also on wet rock surfaces that only are sprayed with mist from the waterfall (Sites & Vitheepradit 2007). In India, Diaphorocoris and Pogonocaudina were collected out of water on wet rock surfaces during the dry season (Sites et al. 2011), although they might also occur in the film of water of waterfalls at times of the year when more water is available. All of the known Old World genera that have adapted to waterfall or hygropetric habitats are in the subfamily Laccocorinae. ...
A new genus and species of Naucoridae are described from two male specimens that inhabited an algae-covered granite rock seep in Guyana. Hygropetrocoris Sites NEW GENUS is diagnosed by a nearly vertical and apparently freely movable head, bulbous eyes, hair lines and hair patches on the hemelytra, profemur with anterior excavation that can receive a prominent tooth on the opposable protibia, and stout marginal tufts of setae on the pronotum, embolium, and connexiva. H. guyana Sites NEW SPECIES is further diagnosed by pseudoparameres that are wide, black, directed posterolaterally, and bluntly produced laterally. Character states of this genus are compared with those of the other genera of Cryphocric- inae. Two new species of Ambrysus Stål from the region also are described. Ambrysus brunneus Sites NEW SPECIES is described from a single female specimen and diagnosed by a digitate lobe on laterosternite VI, shape of the subgenital plate, and concolorous dark brown dorsal coloration; Ambrysus shorti Sites NEW SPECIES is described from a single male specimen and diagnosed by its small size, narrow body form, and tentacular setae of the parameres.
... The Indian subcontinent is host to a diversity of species of creeping water bugs in the subfamily Laccocorinae. Recently, in a treatment of two Indian genera that occur in waterfalls, a new genus was described and another revised (Sites et al. 2011). More speciÞcally, Diaphorocoris is represented by three species in India and a fourth in Sri Lanka; the monotypic Pogonocaudina indica Sites & Zettel is known only from southern India (Sites et al. 2011). ...
... Recently, in a treatment of two Indian genera that occur in waterfalls, a new genus was described and another revised (Sites et al. 2011). More speciÞcally, Diaphorocoris is represented by three species in India and a fourth in Sri Lanka; the monotypic Pogonocaudina indica Sites & Zettel is known only from southern India (Sites et al. 2011). The most speciose genus of Laccocorinae in India is Heleocoris, with 11 of the 28 described species recorded from that country (Thirumalai 2007). ...
... Spe-ciÞcally, the left sixth ventral laterotergite is completely ßat in H. vicinus and partially recessed in H. indicus. Diagonostic information for adults of Pogonocaudina and a key to the species of Naucoridae occurring in waterfalls in southern India were presented by Sites et al. (2011); however, nymphal stages are unknown. Presented here are descriptions of all Þve nymphal instars of three species of Laccocorinae: H. indicus, H. vicinus, and P. indica. ...
Adults and first through fifth instars of three species of Naucoridae in the subfamily Laccocorinae were collected from localities in Tamil Nadu and Karnataka states in southern India. Specifically, Heleocoris indicus (Montandon) and Heleocoris vicinus (Montandon) were collected from the vegetated margins of streams that contained no congeners. Pogonocaudina indica Sites & Zettel was collected from vertical rock surfaces at the type locality. All instars of these three species are described here. First instars of both species of Heleocoris are immaculate, whereas subsequent instars are densely punctate. The first instar of P. indica has pronounced dorsal tubercles with stout spines, whereas subsequent instars lack these structures. All instars of P. indica have a deep terminal cleft and dense fringe of hairs on the perimeter of the posterior abdominal segments. Second through fifth instars of these three species can be distinguished based on relative length of the mesonotal wing pad compared with the exposed part of the metanotal lateral margin.
... Leur comportement migratoire favorise la dissémination de M. ulcerans, ainsi que sa transmission, hors de l'environnement aquatique (Gamboa et al, 2012 ;Ebong et al, 2012). La famille des Naucoridae est représentée par environ 36 genres connus, avec environ 370 espèces décrites (Sites et al, 2011). Parmi les représentants camerounais de cette famille, le genre Ilyocoris regroupe les Naucoridae qui ont les bords latéraux de leur pronotum lisses et nettement rebordés (Tachet et al, 2002). ...
Objectifs : Une étude conduite au laboratoire de Zoologie et de Biologie Générale de l’Université de Yaoundé I a porté sur l’écologie de la punaise aquatique Ilyocoris cimicoïdes Linné 1758 (Heteroptera : Naucoridae) prélevée dans le lac d’Obili (Yaoundé, Cameroun). Méthodologie et résultats : L’analyse physico-chimique montre que ce lac est dans un état eutrophe à hypereutrophe et ses eaux sont fortement chargées en matière organique. Les observations morphologiques et l’illustration des stades de développement ainsi que l’étude de leurs fluctuations numériques montrent que I. cimicoïdes à six stades post-embryonnaires parmi lesquels cinq sont larvaires. La taille des individus augmente de la larve de 1er stade jusqu’au stade adulte. Les stades larvaires d’I. cimicoïdes se distinguent les uns des autres par la présence ou l’absence du ptérothèque, la forme de la marge postérieure du mésotergum et la taille relative du ptérothèque par rapport à la base du mésotergum. Conclusions : L’abondance des stades de développement d’I.cimicoïdes est influencée par la saisonnalité et l’évolution de certaines variables physico-chimiques. Les larves pullulent pendant la saison sèche et les oeufs et adultes pendant la saison des pluies.Mots clés : Pollution aquatique, morphologie, développement, Ilyocoris cimicoïdes. Objectives : A study conducted at the Laboratory of Zoology and General Biology, University of Yaoundé I focused on the ecology of aquatic bug Ilyocoris cimicoides Linnaeus 1758 (Heteroptera : Naucoridae) taken from Lake Obili (Yaoundé, Cameroon). Methodology and Results: The physico-chemical analysis showed that this lake is in a eutrophic state and its waters are heavily loaded with organic matter. Morphological observations and illustration stages of development and the study of their digital fluctuations show that I. cimicoides, has six post-embryonic stages of which five are breeding. The sizes of individuals increase the first stage larva to adult. Larval stages of I.cimicoides are distinguished from each other by the presence or absence of pterotheque, the shape of the posterior margin and mesotergum pterotheque relative size with respect to the base of mesotergum. Conclusions : Abundance stages of development I. cimicoides is influenced by seasonality and the evolution of certain physico-chemical variables. Larvae swim in the dry season and eggs and adults during the rainy season.
... Although currently unknown south of the Isthmus of Kra, Namtokocoris does occur in the southern peninsula of Thailand, therefore one or more species of could conceivably occur in the mountains of the northern Peninsular Malaysia, where they should be searched for on vertical or sloping wet bedrock faces. Previous records of the Indian and Ceylonese genus Diaphorocoris from Indochina, based on a single female unidentifi ed as to species (Chen et al., 2005), are in fact referable to Namtokocoris (Sites & Zettel, 2011 Polhemus, 2008b). Of the 14 Southeast Asian taxa, four are known from continental Southeast Asia, nine from the Sunda Islands, and one from the Philippines. ...
This is the eleventh part in a series of papers constituting a Guide to the Aquatic Heteroptera of Singapore and Peninsular Malaysia, and treats the families Naucoridae and Aphelocheirdae in the infraorder Nepomorpha. Keys are provided to the subfamilies and genera of Naucoridae occurring in the region, and to the regional species in the genera Naucoris, Ctenipocoris, Heleocoris, and Aphelocheirus; new distributional records are also provided for many of these species. In the naucorid subfamily Naucorinae, the new species Naucoris minutus is described from Singapore, and Naucoris rhizomatus J. Polhemus is placed in synonymy under Naucoris scutellaris Stål. In the naucorid subfamily Laccocorinae, new distributional records are provided for Ctenipocoris asiaticus; the new species Heleocoris malayensis is described from Peninsular Malaysia; and Laccocoris nervicus and Heleocoris ovatus are found to have been incorrectly recorded from Peninsular Malaysia in previous publications. Colour habitus photos are provided for the two new species described, and line drawings of male and female genitalic structures are provided for all species in these two families known to occur in Singapore and Peninsular Malaysia.
The true bug infraorder Nepomorpha contains 11 families with classifications mostly using morphological features and not based on phylogenetic analyses. Presented here is the first molecular-based phylogeny for a family of Nepomorpha including more than half of the constituent taxa. Two nuclear (18S rRNA and 28S rRNA) and two mitochondrial (COI and COII) genes were used to reconstruct phylogenetic relationships with both Bayesian inference and maximum likelihood analyses. Ingroup taxa included all six subfamilies, 41 of the 43 genera, and 221 species and subspecies. Results of the analyses were mostly congruent and revealed Naucoridae to be monophyletic, but two of the subfamilies (Cheirochelinae and Naucorinae) and three genera (Heleocoris, Laccocoris and Naucoris) as polyphyletic. Two clades formerly in Naucorinae were recovered as distinct subfamily-level clades: Macrocorinae subfam. nov. contains the African Macrocoris and Neomacrocoris, and Ilyocorinae stat. nov. contains the Palaearctic Ilyocoris and Neotropical Placomerus. Laccocorinae is unchanged in its constituent membership, but its organization now includes four tribe-level groups. Limnocorinae and the recently revised Cryphocricinae and Ambrysinae are unchanged. An annotated list of all subfamily-, tribe- and genus-group taxa is presented, including new taxa descriptions, synonymies and new combinations.
The genus Heleocoris in Indochina has languished for more than a century with no substantial history of taxonomic, bio- logical, or ecological research since the original descriptions of the species, despite its abundance and ubiquity in streams throughout the region. This is largely because of the inability to assign specific identities to these insects and the need for taxonomic revision. Presented here is a comprehensive treatment on the taxonomy and faunistics of the four species now known to occur in Thailand, including the description of Heleocoris mcphersoni, n. sp. Diagnostic information, records from Thailand and other Southeast Asian countries, ecological notes, habitus photographs, and a taxonomic key to identify the four species are presented.
