Halacaridae (Acari) from Punta Allen (Quintana Roo, Mexico): description of one new and one known species of the genus Copidognathus (original) (raw)
Related papers
Hydrobiologia, 2003
Three new and two known Halacaridae species belonging to the genus Copidognathus collected among seagrass plants in Pujada Bay (Mindanao, the Philippines) are described. Copidognathus ivanomorsellii sp.n. belongs to the `Copidognathus gibbus' group and shows the main characteristics of the group but differs from known species as the two triangular porose areolae on AD are joined together, the typical shape of the lateral line of the costae of PD, the distance between the anterior gland pore on PD and the lateral margin of PD, tarsi III and IV with 4:4 dorsal setae, ventral seta on trochanter III almost as long as ventral seta of basifemur III, anterior end of AD with rosette pores, AE and GA only laterally fused but separated in the middle portion and elongated frontal spine (projection) on AD, lateral claws with very fine pecten ventrally. A zoogeographical distribution of the `C. gibbus' group is reported. Copidognathus pujadus sp.n. belongs to the `Copidognathus bairdi' group and is loosely related to C. sideus Bartsch, 1982, C. sidellus Bartsch, 1985 and C. euryalus Bartsch, 1997b. Differences were observed and are discussed. Copidognathus philippinensis sp.n. belongs to the `Copidognathus curassaviensis' group but differs from the four known species within the group by the elevated ridge below the middle two areolae on AD area which connects the two areolae. In addition, two known species i.e. Copidognathus uniscutatus Bartsch, 1984, C. faubeli Bartsch, 1986 were collected. The Halacaridae fauna recorded so far from the Philippines is summarised and discussed.
A new species of the genus Copidognathus (Halacaridae: Acari) from India
2003
Copidognathus bengalensis n. sp. is described from Visakhapatnam coast, Bay of Bengal, India. The present species is characterized by posterodorsal plate (PD) with four costae made up of porose panels, subdivided posterior cornea of ocular plate (OC), and two pairs of basirostral setae in female. This species is related to C. pulcher group, but the nature of porose panels on anterior areolae of anterior dorsal plate (AD) and the setal ornamentation of legs were different between the members of C. pulcher group and the present new species.
2000
Three new and two known halacarid species are described from benthic and epiphytic meiofauna samples nearby five seagrass species from the east coast of Kenya (Gazi Bay). Three species belong to the genus Copidognathus (subfamily Copidognathinae). The present record of C. magnipalpus (Police, 1909) is the first one for the Kenyan coast, but also for the Western Indian Ocean. C. kenyae sp.n. is new to science because of its combination of characteristics: very stout and long rostrum going upto a quarter of palpal tibiotarsus, dorsal seta 2 on ocular plate, epimeral process absent, posterior portion of anterior dorsal plate with a few rosette pores, posterodorsal plate with two costae 2-3 pores wide, few rosette pores present on lateral side of posterodorsal plate giving indication of paracostae, tibia I with two stout, thick and short setae and one slender seta ventrally. Telofemur I with a thick ventral spine like seta. Telofemora III and IV devoid of any ventral seta, tarsi III/IV with four dorsal setae. The resemblance of this species to C. curassaviensis is discussed. C. gazii sp.n. is characterised by an anterior dorsal plate with a small frontal projection, an anterior and a big posterior areolae joined together; gland pores at the lateral margin; ocular plate with an elongated posterior tail; a crescent-shaped elevated ridge at the middle. Posterodorsal plate devoid of costae and with porose panel. Telofemora III and IV devoid of ventral seta. Porose area on telofemora I/II and tibiae I/II. Tarsi III/IV with four dorsal setae. Rhombognathus scutulatus Bartsch 1983 (subfamily Rhombognathinae) is widely distributed in the Indo-Pacific region but this is the first record from the Kenyan coast. One new species of the subfamily Simognathinae was found in the Kenyan samples. Simognathus tropicalis sp.n. differs from S. uniscutatus as the posterior epimeral plate is divided into two halves, which is not the case in the latter species. A pointed apical membrane in the second palpal segment could not be distinguished. An elongated ventro-distal portion of tibia I was observed. In addition to the description of the species found in Gazi Bay, an overview of the species known from the East African coast is reported.
2002
Three halacarid species belonging to the genus Copidognathus are recorded from the shallow subtidal sands at Ko Taenae Is let (sand dune) off Ko Pha‐Ngan Island. Thailand: Copidognathus thailandicus n. sp., C. euryalus Bartsch, 1997 and C. orarius Otto, 2001. Copidognathus thailandicus n. sp. comes close with C. cribrosoma (Police, 1909) and C. cribellus Bartsch, 1993 due to dorsal plates completely covered with rosette pores. Dissimilarities among them are discussed. Copidognathus euiyalus and C. orarius are recorded here for the first time from Thailand and away from its type locality. The present paper is also the first contribution on the taxonomy of Halacaridae (Acari) from Thailand.
Journal of Phycology, 2000
Generic and species concepts within the red algal assemblages Halymeniales and Rhodymeniales are discussed for taxa inhabiting the western Gulf of Mexico. Two principal biogeographic assemblages occur: an off‐shore deep‐water group (including Coelarthrum cliftonii, Halymenia spp., Botryocladia spp., Gloiocladia) representing remnants of a Tethyan distribution, and a near‐shore intertidal flora (comprising Rhodymenia, Grateloupia and Prionitis) which instead reveals biogeographic affinities with the Carolinian Province. These two distinct marine floras will be contrasted phylogenetically based on DNA sequence analysis inferred from chloroplast‐encoded rbcL. The generic descriptions of Grateloupia and Prionitis are in need of taxonomic revision based on a survey of species from Caribbean and Pacific Mexico.