Carabodes paravenezolanus, Ermilov, 2016

Ermilov, S. G., 2016, Contribution to the knowledge of carabodid oribatid mites (Acari, Oribatida, Carabodidae) of Cuba, Acarologia 56 (1), pp. 33-43 : 34-39

Carabodes paravenezolanus n. sp.

( Figures 1-4 )

Diagnosis — Body size: 431 – 547 × 232 – 315. Dorsal side and anogenital part with specific cerotegument consisting from the knob-like base and strong barbs. Lamellae narrowed distally. Rostral and lamellar setae narrowly phylliform, barbed. Interlamellar, notogastral and adanal setae spoon-like, barbed. Bothridial setae long, with short, flattened, barbed head. Tutoria triangular. Epimeral setae setiform, barbed, 1c longest. Genital and aggenital setae setiform, barbed. Adanal lyrifissures in inverse apoanal position.

Description — Measurements. Body length: 481 (holotype, male), 431 – 547 (23 paratypes: 11 females and 12 males); notogaster width: 265 (holotype), 232 – 315 (23 paratypes).

Integument ( Figs 1 A-D; 4A, B, D-F) — Body grey to brown. Dorsal side (except rostrum) and anogenital part covered by dense, specific cerotegumental structures consisting from the knob-like base (diameter up to 6) and one to six strong barbs. Rostrum covered by small cerotegumental tubercles. Lateral sides of prodorsum, subcapitular mentum, epimeral region and legs covered by dense, conical cerotegumental granules. Subcapitular mentum, genital and anal plates with foveolae (diameter up to 6).

Prodorsum ( Figs 1A, C, D ; 4C ) — Rostrum rounded. Lamellae narrowed distally. Translamella not developed. Rostral setae (ro, 24 – 36) hardly narrowly phylliform, barbed, inserted on prodorsum, nearly to distal parts of lamellae. Lamellar setae (le, 32 – 36) well narrowly phylliform, barbed, inserted on lamellae. Interlamellar setae (in, 32 – 41) spoonlike, barbed, inserted on prodorsum. Bothridial setae (bs, 65 – 69) with long, slightly barbed stalk and small, flattened head covered by barbs and ribs, directed laterally. Exobothridial setae and their alveoli absent. Tutoria (tu) long, with triangular tip.

Notogaster ( Figs 1A, B, D ; 4D ) — Prodorsum and notogaster separated by slightly developed, narrow hollow. Anterior notogastral margin slightly convex medially. Humeral shoulders distinctly visible, rounded anteriorly. Ten pairs of notogastral setae similar in length (24 – 28), spoon-like, barbed. Lyrifissures and opisthonotal gland openings not found under the cerotegumental layer.

Gnathosoma ( Figs 2 A-C) — Subcapitulum longer than wide (102 – 118 × 90 – 102). Subcapitular setae a (20) thickened, sparse barbed, with attenuate tip; h (12) setiform, barbed; m (12) thinnest, setiform, barbed. Postpalpal setae e (6) spiniform. Adoral setae absent. Palps (61 – 65) with setation 0-2-1-3-8(+ω). Solenidion of palptarsi thickened, blunt-ended, pressed to their surface. Chelicerae (110 – 118) with two setiform, barbed setae; cha (41) longer than chb (16). Trägårdh’s organ (Tg) tapered, rounded distally.

Ermilov S.G.

Epimeral and lateral podosomal regions ( Fig. 1B ) — Epimeral setal formula 3-1-3-3. Epimeral setae setiform, barbed; 1c (20 – 24) thicker and longer than others (10 – 12). Pedotecta I (Pd I) large, broadly scale-like (in lateral view); pedotecta II slightly developed. Discidia (dis) small, triangular, blunt distally.

Anogenital region ( Figs 1B ; 4E, F ) — Four pairs of genital (g 1 - g 4) and one pair of aggenital (ag) setae similar in length (20), setiform, barbed. Two pairs of anal setae (an 1, an 2, 10 – 12) setiform, smooth. Three pairs of adanal setae (ad 1 - ad 3, 14 – 16) spoon-like, barbed. Adanal lyrifissures (iad) clearly visible, located in inverse apoanal position.

Legs ( Figs 3 A-D; 4G) — Claw of each leg serrate dorsally and with ventral barb. Porose areas of femora and trochanters III, IV present, but visible only in dissected specimens. Formulas of leg setation and solenidia: I (1-4-3-4-15) [1-2-2], II (1-4-3-3- 15) [1-1-2], III (2-3-1-2-15) [1-1-0], IV (1-2-2-2-11) [0- 1-0]; homology of setae and solenidia indicated in Table 1. Famuli short, straight, blunt-ended. Solenidia ’ 1 on tibiae I very long, setiform; ω 1 on tarsi I of medium size, directed forward, ω 1 and ω 2 on tarsi II short, all thickened, blunt-ended; σ on genua III, ’ on tibiae II-IV, short, finger-like, often dilated in median part; other solenidia setiform, blunt-ended.

Material examined — Holotype (male) and 23 paratypes (11 females and 12 males): Cuba, Cayo Santa Maria, 22°66’21”N, 78°96’88”W, leaf litter in forest (unknown date and collector, mites were previously deposited in the Museum of Zoology of Tyumen State University , Russia).

Type deposition — The holotype (alcohol) is deposited in the collection of the Senckenberg Institute , Görlitz, Germany ; 23 paratypes (alcohol) are in the collection of the Tyumen State University Museum of Zoology , Tyumen, Russia .

Etymology — The specific name paravenezolanus refers to the morphological similarity of the new species to Carabodes venezolanus Subías and Arillo, 2004 .

Remarks — Carabodes paravenezolanus n. sp. is similar to Carabodes venezolanus Subías and Arillo, 2004 from Venezuela (see Subías and Arillo 2004) in having spoon-like interlamellar and notogastral setae and long bothridial setae. However, the new species differs from the latter by the convex notogaster (vs. posterior part flattened), bothridial setae with short, clear, flattened head (vs. elongate, slightly developed, barbed unilaterally), notogaster without tubercles (vs. with tubercles) and epimere I with three pairs of setae (vs. with one pair).

Figures

FIGURE 1: Carabodes paravenezolanus n. sp.: A – dorsal view; B – ventral view (gnathosoma and legs except basal parts not illustrated); C – anterior part of body, lateral view (gnathosoma and leg I except basal part not illustrated); D – rostrum, dorso-frontal view. Scale bar (A-C) 100 µm, scale bar (D) 50 µm.

FIGURE 2: Carabodes paravenezolanus n. sp.: A – subcapitulum, ventral view; B – palp, left, antiaxial view; C – chelicera, left, paraxial view. Scale bars (A, B) 20 µm.

FIGURE 3: Carabodes paravenezolanus n. sp.: A – leg I, left, antiaxial view; B – trochanter, femur and genu of leg II, right, antiaxial view; C – trochanter, femur and genu of leg III, left, antiaxial view; D – leg IV, left, antiaxial view. Scale bar 20 µm.

FIGURE 4: Carabodes paravenezolanus n. sp., microscope images in dissected specimen: A – cerotegument in adanal region, dorsal view; B – cerotegument of notogaster, lateral view; C – bothridial seta; D – notogastral setae p1 and p2; E – left genital plate and part of epimeral region; F – left anal plate; G – solenidia on tibia and tarsus of leg II. Scale bars (A, B, G and C-F) 20 µm(A, B, G) 100 µm, scale bar (D) 50 µm.