Corresponding author: Sergey G. Ermilov (
Academic editor: V. Pesic
Two new species of oribatid mites,
In the course of taxonomic identification of Nepalese oribatid mites
The identification keys to the known species of
Specimens of
All specimens were studied in lactic acid, mounted in temporary cavity slides for the duration of the study, and then stored in 70% ethanol in vials. Body measurements are presented in micrometers. The body length was measured in lateral view, from the tip of the rostrum to the posterior edge of the ventral plate. Notogastral width refers to the maximum width in dorsal aspect. Lengths of body setae were measured in lateral aspect. Formulae for leg setation are given in parentheses according to the sequence of trochanter–femur–genu–tibia–tarsus (famulus included). Formulae for leg solenidia are given in square brackets according to the sequence of genu–tibia–tarsus. Terminology used in this paper mostly follows that of
Body size 647–697 × 431–481. Body surface microfoveolate. Rostrum pointed. Anterior margin of lamellae concave medially. Interlamellar setae longer than rostral and lamellar setae. Sensilli with lanceolate head. Tutoria with one strong tooth. Notogastral setae of medium size, weakly thickened, barbed. Pedotecta I pointed anteriorly. Adanal setae
Leg setation and solenidia of adult
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I | ( |
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II | ( |
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III | ( |
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IV |
Roman letters refer to normal setae (
The holotype and one paratype are deposited in the collection of the Senckenberg Institution, Frankfurt, Germany; two paratypes are deposited in the collection of the Siberian Zoological Museum, Novosibirsk, Russia; three paratypes are deposited in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.
The specific name “
1 | Sensilli clavate, with head rounded distally; interlamellar setae clearly shorter than sensilli | 2 |
– | Sensilli lanceolate, with head pointed distally or disk-like; interlamellar setae clearly longer than sensilli | 3 |
2 | Lamellae rounded anteriorly; leg tarsi with three claws; larger body size: 373–442 × 248–391 | |
– | Lamellae concave anteriorly; leg tarsi with one claw; smaller body size: 300 × 229 | |
3 | Lamellae rounded anteriorly; sensilli with disk-like head; body size: 400 × 300 | |
– | Lamellae concave anteriorly; sensilli with lanceolate head | 4 |
4 | Rostrum pointed; larger body size: 647–697 × 431–481 | |
– | Rostrum rounded; smaller body size: 500–568 × 348–424 |
Body size 415–448 × 265–273. Rostrum broadly rounded. Lamellae not covering rostrum and lateral sides of prodorsum. Anterior margin of lamellae weakly concave medially. Interlamellar setae longer than rostral and lamellar setae. Sensilli clavate. Tutoria triangular distally, with two to five small teeth anteriorly. Anterior margins of pteromorphs triangular. Notogastral setae of medium size, weakly thickened, barbed. Genal teeth broadly triangular. Adanal setae
The holotype and one paratype are deposited in the collection of the Senckenberg Institution, Frankfurt, Germany; two paratypes are deposited in the collection of the Siberian Zoological Museum, Novosibirsk, Russia; two paratypes are deposited in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.
The specific name “
1 | Sensilli lanceolate, with head pointed distally; anterior margins of pteromorphs slightly projecting forward; body size: 437–484 × 320–390 | |
– | Sensilli clavate, with head rounded distally; anterior margins of pteromorphs strongly projecting forward, triangular-form | 2 |
2 | Lamellae large, covering lateral side of prodorsum, broadly rounded anteriorly; interlamellar setae reach the insertions of lamellar setae; body length: 420 | |
– | Lamellae of medium size, not covering lateral side of prodorsum, concave anteriorly; interlamellar setae do not reach the insertions of lamellar setae; body size: 415–448 × 265–273 |
We cordially thank Prof. Dr. Badamdorj Bayartogtokh (National University of Mongolia, Ulaanbaatar, Mongolia) for valuable comments, Dr. Umukusum Shtanchaeva and Prof. Dr. Luis Subías (Universidad Complutense de Madrid, Madrid, Spain) for consultations, and Dr. JenőKontschán (Hungarian National History Museum, Hungary) for help with studying the paratype of
1 Results of the Himalaya Expeditions of Dr. Jochen Martens.
2