Research Items (63)
The species of the genus Copelatus Erichson, 1832 occurring in the Dominican Republic are reviewed. Five species are recorded, with recent collecting data provided for four of them. Copelatus martini sp. nov., a member of the consors species group, is described and illustrated. It is compared to the apparently similar species C. guadelupensis Legros, 1948 based on morphological characters and on partial sequences of the CO1 gene. Interesting cases of intraspecific variability in the number of elytral dorsal striae in C. martini sp. nov. and C. vitraci are discussed in the light of the traditional taxo-nomic importance of this character for species group delimitation in Copelatus. Copelatus caelatipennis Aubé, 1838 and C. vitraci Legros, 1948 are recorded for the first time from the Dominican Republic (and therefore also from Hispaniola Island). The remaining species are C. posticatus (Fabricius, 1801), and C. insolitus Chevrolat, 1863 (for the latter, presence in Hispaniola is doubtful and requires confirmation). Finally, C. guadelupensis is recorded from Puerto Rico for the first time, and a checklist of the Copelatus species of the Antilles is appended.
The systematics and the phylogenetic position of the Caribbean representatives of Phaenonotum Sharp (Coleoptera: Hydrophilidae) are investigated to understand the composition of the Caribbean fauna and its origin. Phylogenetic analysis based on mitochondrial and nuclear genes has revealed the Caribbean species to be situated in three deeply nested clades, inferring multiple colonization of Caribbean islands from the continent. Time-tree analysis and BioGeoBEARS analyses of ancestral ranges estimated the oldest clade, consisting of wingless single-island endemics of Cuba (P. delgadoi), Jamaica (P. ondreji sp. nov.) and Hispaniola (P. laterale sp. nov.), to have diverged c. 46.6 Mya from the South American ancestor and subsequently colonizing the Caribbean most likely via the GAARlandia land bridge connecting South America with the Greater Antilles. The remaining three Caribbean species, including the Puerto Rican endemic, P. borinquenum sp. nov., are of more recent (Miocene to Pliocene) origin and colon
The representatives of the genus Cercyon Leach occurring in the Greater Antilles are reviewed. Ten species are recorded, of which five are described here as new: C. gimmeli sp. n. (Dominican Republic), C. armatipenis sp. n. (Dominican Republic), C. taino sp. n. (Dominican Republic), C. sklodowskae sp. n. (Jamaica) and C. spiniventris sp. n. (Dominican Republic). Diagnoses and detailed distributional data are also provided for C. floridanus Horn, 1890 (distributed in southeastern United States of America and Cayman Islands), C. insularis Chevrolat, 1863 (endemic to the Antilles), C. praetextatus (Say, 1825) (widely distributed in the New World incl. Greater Antilles), C. quisquilius (Linnaeus, 1761) (an adventive species of Paleartic origin) and C. nigriceps (Marshall, 1802) (an adventive species probably of Oriental origin). Cercyon armatipenis, C. gimmeli, C. taino form a group of closely related species only distinguishable by male genitalia and DNA sequences. A key to the Great Antillean Cercyon is provided and important diagnostic characters are illustrated. The larvae of C. insularis and C. taino were associated with adults using COI barcode sequences, illustrated and diagnosed. Full occurrence data, additional images and COI barcode sequences were submitted to open access on-line depositories in an effort to provide access to complete data.
Two new species of the genus Hydraena Kugelann, 1794 collected from hygropetric habitats in eastern Cuba are described: Hydraena (Hydraenopsis) blancae sp. nov. from the Nipe-Sagua-Baracoa mountain range, and Hydraena (Hydraenopsis) matthiasi sp. nov. from the Sierra Maestra mountain range. Both species, especially the latter, are closely related to Hydraena (Hydraenopsis) franklyni Deler-Hernández & Delgado, 2012. Diagnostic characters for both new species are provided and illustrated; habitat information and distributional data are also included. An updated key to Cuban species of Hydraena is provided. With this study, the number of species of Hydraena known from Cuba raises to six.
Preimaginal stages of the six species of Hydraenidae presently known from Cuba were obtained by rearing adults in the laboratory. Eggs of Hydraena perkinsi Spangler, 1980, H. decui Spangler, 1980 and H. franklyni Deler-Hernández & Delgado, 2012 are described and illustrated for the first time. The first instar larva of Gymnochthebius fossatus (LeConte, 1855) is redescribed, adding some new remarkable morphological characters including what could be the first abdominal egg-burster reported for this family. All larval instars of H. perkinsi, H. guadelupensis Orchymont, 1923 and Ochthebius attritus LeConte, 1878 are described and illustrated for the first time, with a special emphasis on their chaetotaxy. The second instar larva of G. fossatus along with first and third instar larvae of H. decui and H. franklyni are also studied for the first time. The pupal morphology and vestiture of a species belonging to the genus Hydraena are described for the first time, based on the pupa of H. perkinsi. Biological notes for several preimaginal stages of the studied species are also given.
- May 2016
The morphology and head chaetotaxy of third instar larva of the endemic Cuban B. chevrolati Zaitzev, 1908 are described. We provided the diagnosis of third instar larvae of B. exiguus (Say, 1825) and B. cf. undatus (Fabricius, 1792). This study is based on specimens collected in Cuba and identified by associations with adults. Larvae of B. exiguus and B. cf. undatus agree well with previously described larvae of Berosus. In contrast, B. chevrolati represents an unusual morphotype, characterised by narrow and strongly projecting nasale and well-developed right epistomal lobe. We also revise the adult diagnosis of B. undatus, which was incorrectly provided by Deler-Hern�andez, Fik�a�cek, and Cala- Riquelme (2013), and provide additional characters to distinguish this species from B. interstitialis Knisch, 1924 and B. infuscatus LeConte, 1855.
In order to understand the identity of the Central American species of the genus Phaenonotum Sharp, 1882, the type specimens of the species described by Sharp (1882) deposited in the David Sharp collection in the Natural History Museum in London have been re-examined. The following species are redescribed: Phaenonotum apicale Sharp, 1882, P. collare Sharp, 1882, P. dubium Sharp, 1882 (confirmed as junior synonym of P. exstriatum (Say, 1835)), P. laevicolle Sharp, 1882, P. rotundulum Sharp, 1882 and P. tarsale Sharp, 1882. Lectotypes are designated for P. apicale, P. collare, P. rotundulum and P. tarsale. External diagnostic characters and morphology of male genitalia are illustrated. A table summarizing diagnostic characters allowing the identification of the species is provided.
A study of the fauna of aquatic beetles from municipality Jesús Menéndez, province Las Tunas is presently being carried out. It was reported 30 species by first time for the area, which distributed in 22 genera and six families. Tropisternus chalybeus Castelnau, 1840 is a new record for Oriental region from Cuba.
The representatives of the genus Oosternum Sharp, 1882 occurring in the West Indies are revised. Ten species are recorded, of which seven are here described as new: Oosternum andersoni sp. n. (Cuba), O. bacharenge sp. n. (Dominican Republic), O. cercyonoides sp. n. (Jamaica), O. insulare sp. n. (Jamaica), O. luciae sp. n. (Saint Lucia), O. megnai sp. n. (Cuba) and O. pecki sp. n. (Dominican Republic). Diagnoses and detailed distributional data are also provided for O. sharpi Hansen, 1999 (widespread throughout both Greater and Lesser Antilles), O. latum Fikáček, Hebauer & Hansen, 2009 (endemic to St. Vincent) and an undescribed species from the Bahamas. A key to the West Indian Oosternum is provided and important diagnostic characters are illustrated. The West Indian fauna of Oosternum contains representatives of five different species groups and likely originated by multiple independent colonizations from the American continent. Within the study region, the highest diversity is known from the Greater Antilles, where two endemic species each in Cuba, Jamaica, and Hispaniola. The populations of O. sharpi were found to consist exclusively of females on all islands with the exception Puerto Rico.
- Sep 2013
- Taxonomía y desarrollo larval de la familia Hydraenidae (Coleoptera: Polyphaga) en el oriente cubano
- Sep 2013
- Transferencia de tres especies de Agobardus a Antillatus (Araneae: Salticidae) y una nueva especie para Cuba
The Cuban fauna of the genus Berosus Leach, 1817 is reviewed based on newly collected material as well as historical and type specimens. Nine species are recognized, including three recorded from Cuba for the first time: Berosus infuscatus LeConte, 1855, Berosus interstitialis Knisch, 1924 (= Berosus stribalus Orchymont, 1946 syn. n.) and Berosus metalliceps Sharp, 1882. Only one of the nine Cuban species, Berosus chevrolati, remains endemic to Cuba, as two other species previously considered as endemic to Cuba are recorded from elsewhere: Berosus quadridens from Mexico and Central America and Berosus trilobus from the Dominican Republic. Notes on biology and Cuban distribution are provided for all nine species. Berosus quadridens Chevrolat, 1863, stat. restit. is removed from synonym with Berosus truncatipennis and considered a valid species.
A new species of the genus Phaenonotum Sharp, 1882, P. delgadoi sp. nov., is described from the Nipe-Sagua-Baracoa mountain range in eastern Cuba. The new species is diagnosed from other species of the genus, and compared in detail with P. exstriatum (Say, 1835) and P. minor Smetana, 1978. All specimens of the new species were collected by sifting forest leaf litter far from any known water source and the species is therefore likely terrestrial.
Beginning in eastern Cuba, a systematic survey on the aquatic beetle fauna of that country is presently being carried out. We present a comprehensive account of the six species of the family Hydraenidae (Insecta: Coleoptera) so far collected in this region. A new species, Hydraena franklyni is described. Detailed data on the new record of H. guadelupensis and the four previously known Cuban species are also included. Remarks on their external morphology, descriptions of some morphological features not previously described, distributional maps, and notes on their ecology are given for all six species. In order to facilitate their identification, a simple key to adults of the six species is provided. Although the fauna of Hydraenidae in eastern Cuba may not include further species, the total Cuban fauna of this family is not yet completely known. Resumen Un programa de muestreo exhaustivo está siendo realizado con el fin de estudiar la composición faunística de los coleópteros acuáticos de Cuba. La primera fase de este proyecto se ha realizado en el oriente de Cuba. En este trabajo ofrecemos un amplio estudio de las seis especies de la familia Hydraenidae (Insecta: Coleoptera) recolectadas hasta la fe-cha en esta región. Se describe la nueva especie Hydraena franklyni. Igualmente se dan datos precisos sobre la reciente cita en la isla de Cuba de H. guadelupensis, así como de las otras cuatro especies previamente citadas. Se incluyen mapas de distribución, datos sobre su morfología externa (algunos previamente no estudiados) y sobre hábitats preferentes de las seis especies. También se ofrece una clave sencilla, a fin de facilitar la identificación de las especies cubanas a personas no familiarizadas con este grupo. Aunque en términos generales la fauna de Hydraenidae en el oriente de Cuba puede con-siderarse como bien conocida, cabe esperar la captura de nuevas especies en el resto del país que aún queda por explorar.
736 their more setose, less fl attened and shorter body, head defl ected (protracted and prognathous in the mature larvae), and abdominal segment VIII narrower and slightly longer than the combined lengths of segments VI-VII. Some considerations must be made on the habitats of these Eurypinae species: Eurypus muelleri, Physiomorphus angustus, P. melanurus and P. subcostulatus have dorso-ventrally compressed bodies, probably related to their life in the axils of palm leaves and under the bark of dead trees, where the larvae feed. The body of the adults is slightly compressed and does not seem morphologically adapted to live in the same habitat as the larvae. Stilpno-notus postsignatus has an almost cylindrical larva adapted to burrows in hard wood and is probably fungivorous. This kind of pre-pupa is very probably an autapomorphic character of the Eurypinae (Mycteridae), being possibly related to the diversifi ed habitats occupied by larvae and adults. Although the presence of this kind of pre-pupa (resulting from an extra molt) is consistent in the three mentioned genera, we fi nd its concept is still poorly understood. Bearing this in mind, we regard it as important that it be presented for discussion again.
This work deals with the taxonomic composition, distribution, and bionomics of the genus Laccophilus Leach in Cuba. One new species, Laccuphilus alariei Megna, Deler—Hernández, and Challet, is described. Diagnostic characters, including genitalia, are described and illustrated. A key to the Cuban species of Laccophilus is provided.
Three species of Parandrinae are recognized from Cuba, all belong to Birandra (Yvesandra) Santos-Silva & Shute, 2009: B. (Y.) cubaecola (Chevrolat, 1862); B. (Y.) cribrata (Thomson, 1861); and B. (Y.) latreillei Santos-Silva & Shute, 2009. The latter, confused with the former by Zayas (1957, 1975) is confirmed as a common species on the island. Birandra (Y.) cubaecola is excluded from the fauna of Puerto Rico; B. (Y.) cribrata is also excluded from Puerto Rico as well as Hispaniola.
Enochrus (Lumetus) hamiltoni (Coleoptera, Hydrophilidae) is recorded for the first time from the island of Cuba. This aquatic beetle has been collected in two coastal localities from the southeast of the island in two brackish systems of temporal ponds, non eutrophic, with muddy bottoms and permanent exposure to the sun. Some specimens were collected associated with the vegetation, both emergent and submergent, at the margins of these ponds.
A study of Coleoptera Aquatic Fauna in the protected area “Monte Barranca” was carried. A total 264 specimens, 5 families, 17 species and 1 subspecie are reported for this protected area.
Through the revision of the 459 specimens of 36 species of beetles belonging to Hydrophiloidea and Histeroidea deposited in the entomological collection of the Ecology and Sistematis Institute, information is offered about localities and months of capture, where the specimens were found. In some cases, data on habitat, methods of capture, and altitude are also given
With the aim of to know which species of superfamilies Hydrophiloidea and Histeroidea are deposited in the entomological collection “Juan C. Gundlach” of the Institute Ecology and Systematics it was accomplished an inventory of the specimens there. It was obtained that in such collection are deposited 109 specimens belonging to 42 species of beetles included in both superfamilies. There are 21 species and 40 specimens of Hydrophiloidea with 21 species and 26 specimens of Histeroidea. Alist for them with the data obtained from Gundlach´s manuscript is given
The present work deals with the taxonomic composition, distribution and bionomics of the dytiscid genus Thermonectus DEJEAN in Cuba. Thermonectus are represented by four species (T. basillaris (HARRIS, 1829), T. circumscriptus (LATREILLE, 1809), T. margineguttatus (AUBÉ, 1838), and T. succinctus (AUBÉ, 1838). The Aciliini species Thermonectus succinctus is recorded for the first time from the Antilles. A key of identification of the species of Thermonectus from Cuba is provided
Aquatic insects and priority areas for conservation in the Cauto River high basin (Santiago de Cuba province, Cuba) Abstract: A study of the aquatic insects was carried out in the Cauto river high basin, Santiago de Cuba. We analyzed a variety of bionomic data, which were processed with the Qualitative Biological Similarity and Species Richness Index. A total of 830 specimens of aquatic insects have been collected, belonging to 6 orders, 30 families and 59 species, of which 15 are endemic, 42 are new records for the area and 1 for the eastern region of Cuba. Moreover, we have identified the priority areas for con- servation in the river basins of La Cubana and Palenque, the sources of the river Cauto and La Candelaria-La Guadalupe, based on the presence of 93.3% of the endemic species found in the area, among them the east-Cuban endemics Hageneulus hespera sierramaestrae Kluge, H. pacoi Kluge, Tricorythodes montanus Kruge & Naranjo and Desmopachria tarda Spangler. Also, D. tarda Spangler and L. bifasciatus Chevrolat, present in these areas, show a preference for mountain habitats with clean waters and abundant cover vegetation, aspects linked with the health of mountain ecosystems.
ÑÑÑÑÑ ABSTRACT. The present work deals with the taxonomic composition, distribution, and bionomics of noterids from Cuba. Our research is based both on local and regional references on this family found in the literature, and on the identification of specimens collected from several localities of the country. We present a taxonomical list and a key to identify the species occurring in Cuba, along with their distribution regarding phytogeographic districts, and bionomical information. In Cuba, the family Noteridae is composed of five genera (Hydrocanthus Say, Mesonoterus Sharp, Suphis Aubé, Suphisellus Crotch, and Notomicrus Sharp) and 10 species, of which Suphisellus tenuicornis (Chevrolat) is endemic, and Hydrocanthus advena Sharp needs confirmation. According to the present study, noterids are recorded from 11 (28,2%) of an overall of 39 phytogeographic districts established. The Planicie Centro-Occidental district (Nº 15) shows the highest richness, with 8 species recorded so far. The most widely distributed species is Notomicrus sharpi J. Balfour-Browne, which has been reported for 6 (15,4%) districts. Bionomical data show that noterids have preferences for freshwater habitats, mostly permanent and lentic ones, located in lowlands with a high exposure to sun, turbid waters, and abundant aquatic vegetation.
A study of Hydradephaga fauna was carried out in the area of Baracoa in the National park of Alejandro de Humboldt. Where a total of 456 specimens was registered, distributed in 2 families, 6 subfamilies and 12 species, with a new total report of 9 for the area and 2 for the region Oriental de Cuba (Laccodytes pumilio (LeConte) and Gyrinus elevatus LeConte).