Allogalumna paranovazealandica, Ermilov, Sergey G., Sandmann, Dorothee, Klarner, Bernhard, Widyastuti, Rahaju & Scheu, Stefan, 2015

Ermilov, Sergey G., Sandmann, Dorothee, Klarner, Bernhard, Widyastuti, Rahaju & Scheu, Stefan, 2015, Contributions to the knowledge of oribatid mites of Indonesia. 1. The genus Allogalumna (Galumnidae) with descriptions of two new species (Acari, Oribatida), ZooKeys 529, pp. 71-86 : 73-77

Taxon classification Animalia Oribatida Galumnidae

Allogalumna paranovazealandica sp. n. Figs 10, 11, 12-13, 14-18

Diagnosis.

Body size: 282-298 × 199-215. Rostral, lamellar and interlamellar setae minute. Bothridial setae with unilaterally slightly dilated, elongated, barbed in medio-distal part head. Anterior notogastral margin not developed. Four pairs of porose areas rounded. Median pore present. Postanal porose area elongate oval.

Description.

Measurements. Body length: 282 (holotype: female), 282-298 (seven paratypes: two females and five males); notogaster width: 215 (holotype), 199-215 (seven paratypes). Without sexual dimorphism.

Integument. Body color brown. Body surface, pteromorphs, subcapitular mentum, genital and anal plates, and legs smooth.

Prodorsum (Figs 10, 12, 14). Rostrum broadly rounded. Sublamellar lines distinct, curving backwards. Rostral, lamellar and interlamellar setae minute (all 4), thin, smooth. Bothridial setae long (77-86), with unilaterally slightly dilated, elongated, barbed in medio-distal part head, directed postero-laterad. Exobothridial setae and their alveoli absent. Porose areas Ad elongate oval, transversally oriented (12-16 × 6-8).

Notogaster (Figs 10, 12, 13). Anterior notogastral margin not developed. Dorsophragmata of medium size, elongated longitudinally. Notogastral setae represented by 10 pairs of alveoli. Four pairs of porose areas rounded, with distinct margins: Aa (14-16) larger than A1, A2 and A3 (all 6-10). Setal alveoli la inserted posteriorly to Aa. Median pore present in males and females, located between A2. All lyrifissures distinct, im located between setal alveoli lm and lp. Opisthonotal gland openings located laterally to A1.

Gnathosoma (Fig. 15). Morphology of subcapitulum, palps and chelicerae typical for most Galumnidae (for example, see Engelbrecht 1969, 1972; Ermilov and Anichkin 2010, 2011; Ermilov et al. 2011, 2013b; Bayartogtokh and Akrami 2014). Subcapitulum size: 73 × 61-65. Subcapitular setae setiform, smooth, a (12) longer than m (8) and h (4), a thickest, h thinnest. Two pairs of adoral setae (6-8) thin, indistinctly barbed. Palps (61) with typical setation: 0 –2–1–3– 9(+ω). Axillary sacculi (sac) distinct. Chelicerae (82) with two setiform, barbed setae; cha (28) longer than chb (16). Trägårdh’s organ long, tapered.

Epimeral and lateral podosomal regions (Fig. 11). Anterior tectum of epimere I smooth. Apodemes 1, 2, sejugal and 3 well visible. Four pairs of short (all 4), thin setae, setal formula: 1 –0–1– 2. Pedotecta II scale-like in lateral view, rounded distally in ventral view. Discidia sharply triangular. Circumpedal carinae indistinctly developed, directed to setae 3b.

Anogenital region (Figs 11, 13, 16, 17). Six pairs of genital (g1, 10; g2-g6, 4), one pair of aggenital (4), two pairs of anal (4) and three pairs of adanal (4) setae thin, smooth. Two genital setae on anterior edge of each genital plate. Adanal setae ad3 inserted laterally to adanal lyrifissures. Postanal porose area elongate oval, transversally oriented (20 × 6-8).

Legs (Fig. 18). Morphology of leg segments, setae and solenidia typical for most Galumnidae (for example, see Engelbrecht 1969, 1972; Ermilov and Anichkin 2010, 2011; Ermilov et al. 2011; Bayartogtokh and Akrami 2014). Tridactylous; claws smooth. Formulas of leg setation and solenidia: I (1 –4–3–4– 20) [1 –2– 2], II (1 –4–3–4– 15) [1 –1– 2], III (1 –2–1–3– 15) [1 –1– 0], IV (1 –2–2–3– 12) [0 –1– 0]; homology of setae and solenidia indicated in c Solenidion φ of tibiae IV inserted dorsally at about 2/3 length of segment.

Material examined.

Holotype (female): Indonesia, Sumatra, Bukit Duabelas landscape, Jungle rubber agroforest, research site BJ5, 02°08'35.6"S, E 102°51'04.7"E, 51 m a.s.l., from upper soil layer (0-5 cm). Four paratypes (female and three males): Indonesia, Sumatra, Harapan landscape, Rubber plantation, research site HR2, 01°52'44.5"S, 103°16'28.4"E, 59 m a.s.l., from upper soil layer (0-5 cm). Three paratypes (female and two males): Indonesia, Sumatra, Harapan landscape, secondary rainforest, research site HF4, S 02°11'15.2"S, 103°20'33.4"E, from upper soil layer (0-5 cm). All specimens were collected by Bernhard Klarner (15.XI.2013) and determined and collected to morphospecies level by Dorothee Sandmann.

Type deposition.

The holotype is deposited in LIPI (Indonesian Institute of Science) Cibinong, Indonesia; three paratypes are deposited in the collection of the Senckenberg Museum, Görlitz, Germany; four paratypes are deposited in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.

Etymology.

The specific name paranovazealandica refers to the morphological similarity of the new species to Allogalumna novazealandica Hammer, 1968.

Remarks.

Allogalumna paranovazealandica sp. n. is most similar to Allogalumna novazealandica Hammer, 1968 from New Zealand in having minute prodorsal setae, long bothridial setae with slightly dilated head, four pairs of rounded notogastral porose areas, median pore and elongated postanal porose area. However, the new species differs from the latter by the shorter body length (282-298 versus 400-410 in Allogalumna novazealandica ) and barbed in medio-distal part and curving postero-laterad bothridial setae (versus smooth and straight, directed upwards-laterally in Allogalumna novazealandica ).