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A sample of 128 individuals of the slender-toed geckos Nactus spp. from six islands of Papua New Guinea (Bougainville, Fergusson, Misima, New Britain, Rossel, Sudest) was examined for gastrointestinal helminths. Found were one species of Digenea, Mesocoelium brevicaecum; one species of Cestoda, Gekkotaenia novaeguineaensis; one species of Acanthocephala, Sauracanthorhynchus sphenomorphicola; and eight species of Nematoda, Aplectana zweifeli, Bakeria bakeri, Cosmocerca zugi, Meteterakis crombiei, Parapharyngodon maplestoni, Physalopteroides milnensis, Abbreviata sp. (larvae in cysts), Rictulariidae gen. sp. (larvae in cysts). A total of 1,256 helminths was found. Aplectana zweifeli (n = 447), Parapharyngodon maplestoni (n = 238), and Meteterakis crombiei (n = 221) were the most abundant helminths. Ten new host records are reported for Nactus spp. There was a mean of 7.3 ± 3.1 (3–11) helminth species per island. Bougainville Island had the fewest number of helminth species (3) and Misima Island (11) the highest. Nactus spp. are parasitized by generalist helminths that also infect other lizard species.

Three species of Meristogenys frogs (Ranidae) from Borneo, Malaysia were examined for helminths: Meristogenys orphnocnemis (n = 8), M. poecilus (n = 5), and M. whiteheadi (n = 8). We found three species of Nematoda: Cosmocerca ornata, Rhabdias multiproles, and Abbreviata sp. (larvae in cysts). Both C. ornata and R. multiproles are old world in distribution. The most numerous helminths were Abbreviata sp. in M. whiteheadi. The three species of Meristogenys are parasitized by generalist helminths that also infect other species of anurans. Five new host records are reported.

Twenty-one specimens of the scincid lizard Emoia physicae from Papua New Guinea were examined for gastrointestinal helminths. Found were two species of Cestoda, Cylindrotaenia hickmani and Ophiotaenia greeri, and five species of Nematoda: Skrjabinodon derooijae, Skrjabinodon sheai, Abbreviata sp., Porrocaecum sp., and Rictulariidae gen. sp. Rictulariidae had the highest prevalence (29%) and Porrocaecum sp. had the greatest mean intensity (21.5 ± 9.2). Emoia physicae are infected by generalist helminths that also infect other species. Three helminth species are endemic to Papua New Guinea (O. greeri, S. derooijae, S. sheai); one is known from Australia, Papua New Guinea, and Oceania (C. hickmani); and three are paratenic larvae belonging to widely distributed groups (Abbreviata sp., Porrocaecum sp., Rictulariidae). All are new host records for E. physicae.

Five species of dicroglossid frogs (Dicroglossidae) (n = 29) from Southeast Asia were examined for helminths: Limnonectes blythii, L. hascheanus, L. khasianus, L. kohchangae, and L. macrognathus. We found eight species of Nematoda, consisting of gravid individuals of Aplectana macintoshii, Cosmocerca ornata, Foleyellides malayensis, Icosiella innominata, Oswaldocruzia rohdei, Seuratascaris numidica, and larvae of Abbreviata sp. and Physalopteridae gen. sp. Dicroglossid frogs from Southeast Asia are infected by generalist helminths that infect other species of frogs. Twelve new host records are reported.

Five species of toads (Bufonidae) (n = 22) from Peninsular Malaysia were examined for helminths: Duttaphrynus melanostictus, Ingerophrynus parvus, Leptophryne borbonica, Phrynoidis asper, and Rentapia hosii. The helminth community contained 10 species of Nematoda, consisting of mature individuals of Abbreviata bufonis, Aplectana macintoshii, Cosmocerca ornata, Falcaustra pahangi, Meteterakis singaporensis, Oswaldocruzia filiformis, Oswaldocruzia hoepplii, Seuratascaris numidica, and larvae assigned to Ascarididae and Physalopteridae. Nematoda reported in this study are mainly Old World in distribution. Bufonid species from Peninsular Malaysia are infected by generalist nematodes that also infect other anurans. Seven new host records are reported.

Eleven species of ranid frogs (N = 42) from Southeast Asia were examined for gastrointestinal helminths: Amolops torrentis, Chalcorana labialis, Hylarana erythraea, Hylarana taipehensis, Indosylvirana milleti, Pulchrana banjarana, Pulchrana baramica, Pulchrana glandulosa, Pulchrana picturata, Sylvirana cubitalis, Sylvirana mortensi. The helminth community consisted of eight species of Nematoda, represented by Aplectana macintoshii, Cosmocerca ornata, Cosmocercoides pulcher, Icosiella innominata, Meteterakis japonica, Seuratascaris numidica, Abbreviata sp., and a species of Acuariidae. Ranid frogs from Southeast Asia are infected by generalist helminths that also infect other frogs. Twenty new host records are reported.

Ten species of Cyrtodactylus from Southeast Asia were examined for gastrointestinal helminths. Samples consisted of eight species from Malaysia: Cyrtodactylus aurensis, Cyrtodactylus australotitiwangsaensis, Cyrtodactylus batucolus, Cyrtodactylus consobrinus, Cyrtodactylus ingeri, Cyrtodactylus macrotuberculatus, Cyrtodactylus semenanjungensis, and Cyrtodactylus tiomanensis; and two species from Vietnam: Cyrtodactylus condorensis and Cyrtodactylus huynhi. The helminth community consisted of one species of Cestoda, Oochoristica javaensis, and eight species of Nematoda: Bakeria schadi, Cosmocerca ornata, Parapharyngodon maplestoni, Physalopteroides dactyluris, Spauligodon bintangensis, Abbreviata sp. (larvae), Ascarididae gen. sp. (larvae), and Physalopteridae gen. sp. (larvae). Parapharyngodon maplestoni had the largest number of individuals and the greatest prevalence (100% in each of C. aurensis and C. ingeri). Twenty-one new host records are reported.

Five species of Gonocephalus lizards (N = 27) from Peninsular Malaysia were examined for gastrointestinal helminths: Gonocephalus abbotti (n = 6), Gonocephalus bellii (n = 8), Gonocephalus chamaeleontinus (n = 4), Gonocephalus grandis (n = 5), Gonocephalus robinsoni (n = 4). The aggregate helminth community consisted of two species of Cestoda, represented by Oochoristica javaensis and cysticercoid and nine species of Nematoda: Abbreviata borneensis, Cosmocercoides malayensis, Falcaustra malaysiaia, Meteterakis singaporensis, Orneoascaris sandoshami, Strongyluris calotis, Physocephalus sp., Physalopteridae gen. sp., Ascarididae gen. sp. Species of Gonocephalus are infected by generalist helminths that have potential for infecting a variety of lizards. Twenty-one new host records are reported.

In an attempt to add to our knowledge of the biodiversity of helminths infecting Philippine amphibians, three species of dicroglossid frogs (Dicroglossidae) were examined for helminths: Limnonectes macrocephalus (n = 5), L. visayanus (n=5), and L. woodworthi (n=5). Wefound four species of Nematoda (Abbreviata bufonis, Aplectana samarensis, Falcaustra dubia, and Seuratascaris numidica) and one species of Acanthocephala, Peudoacanthocephalus bufonis. Falcaustria dubia in L. macrocephalus had the greatest mean intensity of infection (15.5±2.1 SD). Rather than possessing a unique helminth fauna, dicroglossid frogs from the Philippines are infected by generalist helminths that also infect other species of frogs. Twelve new host records are reported.

Composition of the helminth community of the brown anole, Anolis sagrei, an exotic invasive species in Taiwan, was studied to identify the emigration point of this lizard. A total of 5,757 helminths was found, of which 5,734 (99.6%) were the nematode Cyrtosomum penneri. Also found were the digenean Mesocoelium monas (21, 0.4%) and one each of the nematodes Parapharyngodon sp. (female) and Acuariidae gen. sp. (larva). Cyrtosomum penneri has previously been reported in A. sagrei in Florida, supporting the contention that the Taiwan population of A. sagrei originated from Florida. This report provides a basis upon which future A. sagrei parasite studies in Taiwan can be based, and a helminth list for A. sagrei is included for future reference.

Two hundred three individuals representing 10 species of gekkonid lizards from Papua New Guinea collected from 2002 to 2005 were examined for helminths: Cyrtodactylus epiroticus (n = 2), C. klugei (n = 2), C. loriae (n = 7), C. novaeguineae (n = 3), C sermowaiensis (n = 30), Gehyra mutilata (n = 22), G. oceanica (n = 27), Gekko vittatus (n = 41), Hemidactylus frenatus (n = 29), and Lepidodactylus lugubris (n = 40). One species of Digenea, one species of Cestoda, 18 species of Nematoda, as well as three taxa of nematode larvae (in cysts) were found. Thirty-one new host records and six new locality (= country) records are reported. Prevalence in endemic geckos was significantly higher than in non-endemic geckos.

Two hundred eighty-eight ranid frogs from Papua New Guinea collected from 2002 to 2005 were examined for endoparasites: Platymantis adiastolus, P. boulengeri, P. browni, P. gilliardi, P. papuensis, P. schmidti, Rana daemeli, R. garritor, R. jimiensis, R. milneana, and R. papua. Found were one species of Cestoda (as cysticerci), three species of Digenea (Opisthioglyphe cophixali, Diplodiscus amphichrus, and Mesocoelium monas), 18 species of Nematoda (adults of Abbreviata oligopapillata, Aplectana krausi, Aplectana macintoshii, Aplectana zweifeli, Cosmocerca novaeguineae, C. tyleri, Desmognathinema papuensis, Falcaustra papuensis, Icosiella papuensis, Meteterakis crombiei, Ochoterenella papuensis, Paracapillaria spratti, Pseudorictularia dipsarilis, Rhabdias australiensis, Seuratascaris numidica, larvae of Abbreviata sp., and Ascaridae gen. sp.), two species of Acanthocephala (Acanthocephalus bufonis and cystacanths of a second species), and one species of Pentastomida (nymphs of Kiricephalus sp.). Sixty-seven new host records, one new country record, and several new island records are reported. Nematodes composed 18/24 (75%) of the species present. Thirteen of the 24 endoparasite species found currently appear to be endemic to Papua New Guinea.

The initial gastrointestinal helminth list is established for Lechriodus melanopyga (Doria) from Papua New Guinea. Examination of the digestive tracts of 16 L. melanopyga from April–May (n = 14) and October (n = 2) revealed six helminth species: Digenea: Mesocoelium monas; Nematoda: Aplectana macintoshii, Cosmocerca novaeguineae, Oswaldocruzia bakeri, Abbreviata sp. (larvae in cysts); Acanthocephala: Acanthocephalus bufonis. Cosmocerca novaeguineae was present in the greatest numbers (171) and shared the highest prevalence (88%) with Acanthocephalus bufonis. Lechriodus melanopyga represents a new host record for each of these helminths. New Guinea is a new locality record for Mesocoelium monas and Acanthocephalus bufonis.