Haplozetes paraminimicoma, Ermilov, Sergey G., Bayartogtokh, Badamdorj, Sandmann, Dorothee, Marian, Franca & Maraun, Mark, 2013

Ermilov, Sergey G., Bayartogtokh, Badamdorj, Sandmann, Dorothee, Marian, Franca & Maraun, Mark, 2013, New and little known species of oribatid mites of the family Haplozetidae (Acari, Oribatida) from Ecuador, ZooKeys 346, pp. 43-57 : 44-46

Haplozetes paraminimicoma sp. n. Figs 1, 2

Diagnosis.

Body size 332-348 × 215-249. Body surface smooth. Rostral and lamellar setae of medium long, with short cilia. Interlamellar setae short, smooth. Sensilli spindle-form, ciliate. Tutoria almost reaching of rostral margin, extending beyond level of insertions of rostral setae. Notogastral setae short, smooth. Genital plates with five pairs of setae. Epimeral, genital and aggenital setae with short cilia. Anal and adanal setae minute. Leg tarsi monodactylous. Leg tarsi I with 19 setae ( l’’ absent).

Description.

Measurements. Body length: 348 (holotype), 332-348 (four paratypes); notogaster width: 232 (holotype), 215-249 (four paratypes).

Integument. Body color light brownish. Body surface smooth. Anterior part of pteromorphs striate.

Prodorsum. Rostrum rounded. Lamellae (Lam) located dorso-laterally, longer than half of prodorsum, reaching insertions of lamellar setae. Rostral (ro, 28-32) and lamellar (le, 32-36) setae setiform, with several short cilia. Interlamellar setae short (in, 8-12), thin, smooth. A pair of elongate, narrow porose areas Ad present latero-posterior to interlamellar setae (well visible in dissected specimen). Exobothridial setae (ex, 12-16) thin, with one or two cilia. Sensilli longest setae on prodorsum (ss, 94-106), spindle-form, with long stalk, lanceolate head and thin, point tip; distal part of stalk and sensillar head ciliate. Tutoria (tu) thin, almost straight, extending insertions of rostral setae, with small, free tooth (t) distally. Sublamellar lines (Slam) present, short, thin, poorly visible. Sublamellar porose areas (Al) small, rounded (4). Porose areas Am and Ah not observed.

Notogaster. Anterior notogastral margin convex medially. Dorsophragmata (D) and pleurophragmata (P) distinct. Pteromorphs sub-triangular. Ten pairs of notogastral setae short (6), thin, smooth. Four pairs of sacculi (Sa, S1, S2, S3) with small openings; Sa consisting of two adjacent parts, S1 and S2 irregular elongate oval, S3 sub-triangular. Lyrifissures (ia, im, ip, ih, ips) and opisthonotal gland openings (gla) located typically for the genus (see Beck 1964; Bayartogtokh 2000). Postanal porose area not observed.

Gnathosoma. Subcapitulum longer than wide (82 × 61). Subcapitular setae setiform, with short cilia; h (12) shorter than m (28) and a (16). Two pairs of adoral setae (or1, or2, 12) setiform, straight, densely ciliate. Palps (69) with setation 0 –2–1–3– 9(+ω). Solenidion thickened, weakly dilated distally, coupled with eupathidium (acm). Chelicerae (82) with two setiform, ciliate setae; cha (28) longer and thicker than chb (18). Trägårdh’s organ (Tg) conical.

Epimeral and lateral podosomal regions. Apodemes 1, 2, 3 and sejugals well developed. Epimeral setal formula 3 –2(1)–3– 3; setae setiform, with short cilia. Setae 2b present in holotype and two paratypes. Medial setae 1a, 2a, 3a (8-10) shorter than others (16-20). Pedotecta I (Pd I), II (Pd II), discidia (dis) and circumpedal carinae (cp) developed typically for the genus (see Beck 1964; Bayartogtokh 2000).

Anogenital region. Five pairs of genital (g1-g5, 12) and one pair of aggenital (ag, 16) setae setiform, with short cilia. Two pairs of anal (an1, an2, 4) and three pairs of adanal (ad1-ad3, 4) setae minute. Lyrifissures iad in paraanal position.

Legs. All tarsi with one strong, dorsally weakly serrate claw. Morphology of leg segments, setae and solenidia typical for genus (see Beck 1964; Bayartogtokh 2000), hence only tarsus I is illustrated. Formulae of leg setation and solenidia: I (1 –5–3–4– 19) [1 –2– 2], II (1 –5–3–4– 15) [1 –1– 2], III (2 –3–1–3– 15) [1 –1– 0], IV (1 –2–2–3– 12) [0 –1– 0]; homology of setae and solenidia indicated in Table 1.

Material examined.

Holotype (female) and four paratypes (two females and two males): Ec-1.

Type deposition.

The holotype (in ethanol) is deposited in the collection of the Zoological Institute of the Russian Academy of Sciences, St. Petersburg, Russia; two paratypes (in ethanol) are deposited in the collection of the Siberian Zoological Museum, Novosibirsk, Russia; two paratypes (in ethanol) are in the personal collection of the first author.

Etymology.

The prefix para is Latin meaning “near” and refers to the similarity between the new species and the species, Haplozetes minimicoma Beck, 1964.

Remarks.

In having the combination of main morphological characters (sensilli spindle-form, ciliate; interlamellar, notogastral and ano-adanal setae short; leg tarsi with one claw), Haplozetes paraminimicoma sp. n. is most similar to Haplozetes minimicoma Beck, 1964 from the Neotropical region and India (see Beck 1964), however the new species clearly differs from the latter by the presence of five pairs genital setae (versus four), smooth body surface (versus microfoveolate), long tutoria, extending insertions of rostral setae (versus not reaching), longer, ciliate genital and epimeral setae (versus short, smooth), and the absence of setae l’’ on leg tarsi I (versus present).