Corresponding author: Sergey G. Ermilov (
Academic editor: V. Pesic
Five species of the subgenus
Ermilov SG, Corpuz-Raros L, Tolstikov AV (2014) The oribatid mite subgenus
The primary goal of the present paper is to describe and illustrate a new species. The secondary goal is to make a supplementary description of
In addition, we present an identification key to the Philippine species of
The species of
Specimens were mounted in lactic acid on temporary cavity slides for measurement and illustration. The body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the ventral fig. The notogastral width refers to the maximum width in dorsal aspect. Lengths of body setae were measured in lateral aspect. All body measurements are presented in micrometers. Formulae for leg setation are given in parentheses according to the sequence trochanter–femur–genu–tibia–tarsus (famulus included). Formulae for leg solenidia are given in square brackets according to the sequence genu–tibia–tarsus. General terminology used in this paper follows that of Grandjean (summarized by
With generic characters of
Leg setation and solenidia of
Leg | Trochanter | Femur | Genu | Tibia | Tarsus |
---|---|---|---|---|---|
I | |||||
II | |||||
III | |||||
IV |
Roman letters refer to normal setae (ε to famulus), Greek letters to solenidia. Single prime (‘) marks setae on anterior and double prime (“) setae on posterior side of the given leg segment. Parentheses refer to a pair of setae.
Holotype (female) and one paratype (female): L-45.
The holotype is deposited in the collection of the Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia; one paratype (dissected) is deposited in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.
The specific name “
In having large body size, pointed rostrum, spindle-form bothridial setae, long prodorsal setae, anterior notogastral margin, four pairs of notogastral porose areas,
Also, in having large body size, bothridial setae with dilated head, long prodorsal setae, anterior notogastral margin, four pairs of notogastral porose areas,
Four specimens (two females and two males): L-1.
Body longer (348–390 versus 319–325 in Indian specimens). We believe these differences represent intraspecific (perhaps geographical) variability.
Anterior notogastral margin is well visible (versus completely absent in Indian specimens); also, the text of other paper (
Rostral, lamellar and interlamellar setae developed (versus absent in Indian specimens). We believe these differences can be erroneous. The reason is that
1 | Rostrum pointed; porose areas |
|
– | Rostrum rounded; porose areas |
|
2 | Lamellar and interlamellar setae well developed, long; bothridial setae lanceolate; body size: 425–482 × 305–344 | |
– | Lamellar and interlamellar setae minute or absent; bothridial setae clavate |
|
3 | Porose areas |
|
– | Porose areas |
|
4 | Bothridial heads densely ciliale; anterior notogastral margin developed; body size: 303–348 × 204–220 | |
– | Bothridial head smooth; anterior notogastral margin not developed; body size: 330 × 264 |
We cordially thank Prof. Dr. Badamdorj Bayartogtokh (National University of Mongolia, Ulaanbaatar, Mongolia) and one anonymous reviewer for the valuable comments, Mr. Orlando Eusebio and Jeremy Naredo (Museum of Natural History, University of the Philippines Los Baños, College, Laguna, Philippines) for facilitating dispatchment of the specimens, together with other oribatids, to Russia.
It is possible that