Colorado Entomological Institute

New York City, CO, United States

Colorado Entomological Institute

New York City, CO, United States

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Polhemus J.T.,Colorado Entomological Institute | Tran A.D.,Hanoi University of Science
Zootaxa | Year: 2012

Amemboa ripiaria Polhemus & Andersen, 1984 was recognised as junior synonym of Amemboa lyra (Paiva, 1918) by Zettel & Chen (1996). After examination of a series of Amemboa specimens from Myanmar, we now determine that these two names are not synonymous and thus re-establish Amemboa riparia. These species can be separated from each other by the structures of the male's fore leg, and the apical part of the pygophore. Copyright © 2012 · Magnolia Press.


Tran A.D.,Hanoi University of Science | Polhemus J.T.,Colorado Entomological Institute
Zootaxa | Year: 2012

The water skater genus Gerris of Vietnam is reviewed, with a key to species provided. Gerris (s.str.) curvus sp. n. from southern Vietnam is described. The discovery of this species greatly extends the southernmost distributional range of the genus. Two other species, Gerris (s.str.) latiabdominis and Gerris (Macrogerris) gracilicornis, are first records for Vietnam. Copyright © 2012 · Magnolia Press.


Polhemus D.A.,Bishop Museum | Polhemus J.T.,Colorado Entomological Institute
Raffles Bulletin of Zoology | Year: 2012

This is the ninth part in a series of papers constituting a Guide to the Aquatic Heteroptera of Singapore and Peninsular Malaysia, and treats the families Ochteridae and Gelasotocoridae, constituting the superfamily Ochteroidea in the infraorder Nepomorpha. Species treatments and keys are provided for the multiple species of Ochterus and Nerthra occurring in the region under study, and for several widespread extralimital species. The following new species are described: Ochterus pseudomarginatus new species from Singapore and Peninsular Malaysia, Ochterus signatus new species from Peninsular Malaysia and Vietnam, and Ochterus singaporensis new species from Singapore. New distributional records for Singapore and Peninsular Malaysia are also provided for Ochterus marginatus and Nerthra macrothorax. Colour habitus photos and line drawings of male genitalic structures are provided for all Ochterus species treated; a colour habitus photo is also provided for Nerthra macrothorax, accompanied by line drawings of key characters for Nerthra species found in Singapore and Peninsular Malaysia. An updated checklist is provided for species of Ochterus occurring in Southeast Asia and the Malay Archipelago. © National University of Singapore.


Polhemus D.A.,Bishop Museum | Polhemus J.T.,Colorado Entomological Institute
Raffles Bulletin of Zoology | Year: 2013

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. © National University of Singapore.


Polhemus J.T.,Colorado Entomological Institute | Polhemus D.A.,Bishop Museum
Raffles Bulletin of Zoology | Year: 2012

This is the eighth part in a series of papers constituting a Guide to the Aquatic Heteroptera of Singapore and Peninsular Malaysia, and treats the families Leptopodidae, Omaniidae and Saldidae in the infraorder Leptopodomorpha. Keys are provided to the regional families and genera of Leptopodomorpha, and new distributional records are provided for many of the constituent species occurring in the region. Rupisalda thailandana (Cobben, 1986), new combination, is proposed for Saldula thailandana Cobben, 1986. © National University of Singapore.


Polhemus D.A.,Bishop Museum | Polhemus J.T.,Colorado Entomological Institute
Aquatic Insects | Year: 2011

Seven new species of Rhagovelia are described from the Raja Ampat Islands, lying immediately west of New Guinea. The new taxa are as follows: Rhagovelia batantana n. sp. and Rhagovelia rajana n. sp. from Batanta; Rhagovelia misoolana n. sp. from Misool; Rhagovelia calcarea n. sp. from Gam and Waigeo; Rhagovelia styx n. sp. from Waigeo; Rhagovelia salawati n. sp. from Salawati, and Rhagovelia transbintuni n. sp. from Batanta, Salawati, the western Vogelkop Peninsula and the Bomberai Peninsula. A key is provided to all Rhagovelia species currently recorded from the Raja Ampat Islands, accompanied by figures of the male parameres, other key characters, and distribution maps for all species. © 2011 Taylor & Francis.


Polhemus D.A.,Bishop Museum | Polhemus J.T.,Colorado Entomological Institute
Entomologica Americana | Year: 2012

A new species of water scorpion, Ranatra schuhi, is described from the Shan Plateau of upper Burma. This new species is member of the Ranatra gracilis species group, but can be easily separated from previously described members of that group by the distinctive structure of the male paramere. Illustrations are provided of key characters diagnostic for R. schuhi, including the structures of the head, respiratory siphon, male forelegs and genitalia. A revised key to the species of the Ranatra gracilis group is provided, as well as additional Burmese records for Ranatra lansburyi Chen, Nieser and Ho, Ranatra libera Zettel, and Ranatra varipes Stål. The previously undescribed male of Ranatra distanti Montandon is described based on material from the Andaman Islands, and the structure of the male paramere illustrated. © 2012 New York Entomological Society.


Polhemus D.A.,Bishop Museum | Polhemus J.T.,Colorado Entomological Institute
Raffles Bulletin of Zoology | Year: 2013

This is the tenth part in a series of papers constituting a Guide to the Aquatic Heteroptera of Singapore and Peninsular Malaysia, and treats the families Belostomatidae and Nepidae in the infraorder Nepomorpha. Species treatments are provided for all species in these groups occurring in the region under study, with keys provided for the multiple genera of Belostomatidae and Nepidae occurring in the region, and for the regional species in the nepid genera Ranatra, Cercotmetus, and Laccotrephes. New distributional records for Singapore and Peninsular Malaysia are also provided for many of the species treated. © National University of Singapore.


Polhemus J.T.,Colorado Entomological Institute | Polhemus D.A.,Bishop Museum
Entomologica Americana | Year: 2012

The genus Hermatobates is revised and considered to contain 12 valid species, including two new species described herein: H. schuhi from the Ryukyu and Tokara Islands, and H. palmyra from the Line Islands. A morphological redescription is provided for H. djiboutensis from the Indian Ocean, and a neotype is designated for H. singaporensis from Singapore. All previous records of H. marchei from Australia are considered to instead represent H. weddi. A revised key is provided to all known species of Hermatobates, and scanning electron micrographs are provided for certain key characters of the legs, thoracic venter, and male genitalia in H. schuhi, H. palmyra, H. djiboutensis, H. weddi, H. marchei, and H. kula. Additional photographic illustrations are provided for key characters in H. haddoni, H. bredini, H. hawaiiensis, H. tiarae, H. palmyra, H. djiboutensis, H. singaporensis, H. marchei and H. armatus, and line drawing illustrations are provided for endosomal structures in H. weddi, H. haddoni, H. djiboutensis, and H. bredini. Distribution maps are also provided for all species. It is suggested that characters of the male endosomal and metasternal morphology provide an initial basis for delineation of five intraspecific species groupings. It is hypothesized that repeated episodes of vicariance related to alternating high and low Quaternary sea level stands have led to the current segregation of morphologically similar species within the H. weddi group in the region between Australia and Southeast Asia. © 2012 New York Entomological Society.

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