Javalbia discrepans, Smit, 2016

Smit, H., 2016, The water mite family Aturidae Thor, 1900 from Southeast Asia (Acari: Hydrachnidia) with the description of one new genus and 14 new species, Acarologia 56 (3), pp. 341-365 : 349-351

publication ID

https://doi.org/ 10.1051/acarologia/20162248

persistent identifier

https://treatment.plazi.org/id/0389875B-A857-FFFA-5FA5-FDABABE4FE65

treatment provided by

Marcus

scientific name

Javalbia discrepans
status

n. sp.

Javalbia discrepans n. sp.

( Figure 6 View FIGURE )

Material examined — Holotype female, River at km. 13, Doi Inthanon NP, Thailand, 18°31.532N 98°39.091E, alt. 465 m a.s.l., 25-xi-2007 GoogleMaps . Paratypes: four females, Stream W of Bankrang Camp, Kaeng Krachan NP, Thailand, 12°48.106N 99°26.786E, 20- xi-2007 GoogleMaps .

Diagnosis — Dorsal shield with a posterior extension; three platelets in dorsal furrow fused to one elongated platelet, A2 fused with dorsal shield.

Description — Female: Idiosoma pale yellow, dorsally 405 (381 – 405) long and 300 (284 – 292) wide, ventrally 344 (247 – 251) long. Dorsal shield separated with a posterior extension, separated from ventral shield, and appears therefore in dorsal view as incomplete; dorsal shield 251 (247 – 251) wide. A2 fused with dorsal shield. Three pairs of glandularia lying in dorsal furrow on an elongated platelet. Postocularia lying posteromedially of dgl- 1, the latter lying close to margin of dorsal shield. Suture lines of coxae obliterated, only suture lines of Cx-III and Cx-IV present to some extent, other suture lines nearly absent. Cxgl-4 between fourth leg sockets and genital field, lying somewhat closer to genital field. Genital field 126 wide, with thee pairs of acetabula lying in a line, genital plates connected by a small strip of sclerotization. Vgl-4 lying on a small platelet, not fused to coxae. Excretory pore not lying on a small platelet, posterior to the genital field, touching postgenital sclerite but not fused. Length of P1-P5: -, 30, 22, 46, 24. Length of I-leg-4-6: 40, 46, 42 (till tip of segment. Length of IV-leg-4-6: 42, 48, 42 (till tip of segment). Swimming setae absent. Male: Unknown.

Etymology — Named for the very different dorsal shield compared to other Javalbia species.

Remarks — The dorsal shield with a posterior extension is not found in any other Javalbia species. Moreover, the fused glandularia platelets in the dorsal furrow are also unique.

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Trombidiformes

Family

Aturidae

Genus

Javalbia