Leonila Corpuz-Raros

Twelve new species and one new record of cheyletidae (Acari) from the Philippines

Abstract Twelve new species are described from the Philippines, namely, Allieaprasadi, Chelacheles robustus, Cheletomimus daltoniensis, Eutogenes bakeri, E. cornutus, E. makilingiensis, Hemicheyletia lanceolata, Ker mercedesae, K. pintoriensis, Neoeucheyla dua, N. maysa and Pavlovskicheyla philippicana. Hemicheyletia congoensis (Cunliffe) is also reported and the males of Acaropsella filipina Corpuz-Raros, Hemicheyletia leytensis Corpuz-Raros and Hypopicheyla mirabilis (Volgin) are described for the first time. Eucheyletia nindota Corpuz-Raros which was doubtfully combined with this genus in original description, is redescribed and transferred to Columbicheyla Thewke and Enns. A key to the 27 genera and 49 species of cheyletids known from the Philippines is given, as well as keys to known world species of Alliea, Chelacheles, Cheletomimus, Columbicheyla, Eutogenes, Ker and Pavlovskicheyla

The oribatid mite subgenus Galumna (Galumna) (Acari, Oribatida, Galumnidae) in the Philippines

Abstract Five species of the subgenus Galumna (Galumna) (Acari, Oribatida, Galumnidae) are registered in the Philippine oribatid mite fauna. A new species, Galumna (Galumna) makilingensis sp. n., is described; it is most similar morphologically to Galumna (Galumna) tokyoensis Aoki, 1966, but differs from the latter by the morphology of porose areas Aa and Ap, rostral setae, and length of interlamellar setae. Three species, Galumna (Galumna) crenata Deb & Raychaudhuri, 1975, Galumna (Galumna) cf. exigua Sellnick, 1925 and Galumna (Galumna) khoii Mahunka, 1989, are recorded in the Philippines for the first time. The species Galumna (Galumna) crenata is redescribed. An identification key to the Philippine species of Galumna (Galumna) is given.

Tuckerella filipina, a new species of Tuckerellidae (Acari) from the Philippines

Abstract The female, male larva, protonymph, deutonymph and tritonymph of Tuckerella filipina n. sp. are described based on material collected from fruits of Hydnocarpus anthelmintica Pierre ex Laness. from Luzon Is., Philippines.

A new subgenus and two new species of oribatid mites of the genus Neoribates (Acari, Oribatida, Parakalummidae) from the Philippines

The oribatid mite family Parakalummidae (Oribatida, Oripodoidea) is recorded for the first time from the Philippines. A new subgenus of the genus Neoribates, N. (Pseudoneoribates) subgen. nov., is proposed and two new species, N. (Ps.) negrosensis sp. nov. and N. (Ps.) kontschani sp. nov., are described. The new subgenus differs from the other subgenera and genera of Parakalummidae by the morphology and structure of prolamellae, which are smoothly fused to lamellae basally and curving backwards in medio-anterior parts. An identification key to all known subgenera of Neoribates is given. Neoribates (N.) corticis (Ewing, 1913) combined in the subgenus Neoribates (Parakalumma): N. (Par.) corticis comb. nov..

New species of galumnid oribatid mites of the genera Mirogalumna and Pergalumna from the Philippines (Acari, Oribatida, Galumnidae)

Abstract Two new species of the family Galumnidae (Acari, Oribatida) are described from the Philippines. Mirogalumna leytensis sp. nov. differs from the type species, M. xena Mahunka, 1993, by the body size, morphology of rostrum, bothridial setae and notogastral porose areas, absence of anterior notogastral margin and number of leg claws. Pergalumna panayensis sp. nov. is most similar morphologically to P. corolevuensis Hammer, 1971; however it differs from the latter by the body length and surface, localization of notogastral alveoli la, length of adanal setae ad3, and the presence of median pore. The genus Pergalumna is recorded for the first time in the Philippines, Mirogalumna and Pergalumna hastata Aoki, 1987 are registered for the first time in the Oriental region.

Two new species and a new record of Bak from the Philippines (Acari: Cheyletidae)

Abstract Two new species of Bak, B. faini and B. gersoni, are described and B. furcatus Gerson and Fain 1991 is reported as a new record for the Philippine fauna. The male of B. furcatus is described for the first time. A key to the known species of Bak is given.

An interesting sexually dimorphic species, Neoribates isabelaensis sp. nov. (Acari, Oribatida, Parakalummidae) with remarks on sexual dimorphism in Oripodoidea

A new species Neoribates isabelaensis sp. nov. showing an interesting sexual dimorphism is described from bamboo litter on Luzon Island in the Philippines. This species is unique among other species of Neoribates in the structure of the posterior part of notogaster in males, which has a large round concavity bearing a pair of large sacculi S3. The specific function of this structure is not yet known, but the found sexual dimorphism is presumably involved in pheromonal communication allowing rapid sperm transfer. This is the fourth Neoribates species displaying sexually dimorphic characters. Additionally, Neoribates isabelaensis sp. nov. differs from the morphologically most similar species, Neoribates barbatus Hammer, 1968, by its smaller body size, pointed rostrum, long and setiform bothridial setae and the localization of notogastral setae h1 and h2, which insert close to each other. Further, we discussed all cases of sexual dimorphism in the family Parakalummidae as well as other related groups of Oripodoidea, and the possible function of these modifications.

First record of the genus Sacculogalumna (Acari: Oribatida: Galumnidae) from the Philippines, with description of a new species

The oribatid mite genus Sacculogalumna (Oribatida: Galumnidae) is recorded in the Philippines for the first time. A new species, S. samarensis n. sp., is described from secondary forest litter in the Western and Eastern Samar Provinces in Samar Island. It differs from S. saccularis and S. suiyangensis in having pointed rostrum, setiform bothridial setae, reticulate pteromorphs, long and thickened adanal setae ad1 and ad2 and one seta on anterior edges of genital plates, by the location of lamellar setae between lamellar lines, and the absence of postanal porose area, and by the medially interrupted dorsosejugal furrow. The inclusion of the new species in Sacculogalumna is proved, and an identification key to known species of the genus is given. http://zoobank.org/urn:lsid:zoobank.org:pub:4D40D41A-EF5C-423D-AAB3-857C16B10BE8

New Trizetoidea (Acari, Oribatida) from the Philippines

Abstract Two new species of oribatid mites of the superfamily Trizetoidea (Acari, Oribatida) are described from the Philippines. Eurhynchoribates (Eurhynchoribates) nuevavizcayaensis sp. nov. (Rhynchoribatidae) is similar to E. (E.) pocsi (Mahunka, 1986) in having the interlamellar setae the longest of the setae on the prodorsum, setiform, thickened; mostly long notogastral setae; setiform, thickened aggenital and adanal setae; and localization of ad3 in paraanal and adanal lyrifissures in inverse apoanal positions. It differs by the pointed rostrum, h1 longest of the setae on the notogaster, and the absence of lateral teeth on the rostrum. Suctobelbila trifasciata sp. nov. (Suctobelbidae) is similar to S. baderi Mahunka, 1988 in having two lateral longitudinally oriented ridges on the notogaster, but differs by its larger body size, in having two or three pairs of rostral teeth, three longitudinal notogastral ridges, six pairs of genital setae and the absence of humeral tubercles.

New ameroid mites (Acari, Oribatida) from the Philippines

Abstract Two new species of oribatid mites of the superfamily Ameroidea (Acari, Oribatida) are described from the Philippines. Heterobelba quezonica sp. nov. (Heterobelbidae) is most similar to H. stellifera stellifera Okayama, 1980 and H. stellifera formosana Aoki, 1990, but differs by the pointed median tooth of the rostrum and exuvial setae Elp, Elm, Ep2 being clearly longer than the other setae. Oxyamerus isabelaensis sp. nov. (Oxyameridae) is most similar to O. hauserorum Mahunka, 1987, but differs by having bifurcate notogastral setae and adanal setae ad2, short lamellar setae and phylliform aggenital setae. Revised generic diagnoses of Heterobelba and Oxyamerus are presented.