Amboroppia

ErmilovK, Sergey G., 2024, Two new species of Amboroppia (Quintanoppia) (Acari, Oribatida, Oppiidae) from Guatemala, Acarologia 64 (2), pp. 315-322 : 316-319

Amboroppia (Quintanoppia) guatemalaensis n. sp.

Zoobank: AD2F17D5-1001-4B23-9E9E-D1F022EA18BB

( Figures 1 , 2 )

Type material — Holotype (male) and six paratypes (six males): eastern Guatemala,

Zacapa Department, Sierra de Las Minas, 9 km N. San Lorenzo, 2100 m a.s.l., damp litter in

cloud forest, 17.XI.1986 (E. Lindquist).

The holotype is deposited in the Canadian National Collection, Ottawa, Canada ; six paratypes are in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia. All specimens are preserved in 70% solution of ethanol with a drop of glycerol.

Diagnosis — Body length: 870–945. Interbothridial region of prodorsum tuberculate. Median tooth of rostrum pointed. Six to seven teeth on lateral side of prodorsum. Costular-transcostular complex absent. Relative length of prodorsal setae: in ˃ ro ˃ le ˃ ex ; all setae

setiform, barbed; bothridial seta long, spindle-form, with narrowly elongate dilated mediodistal part, barbed. Notogastral seta c short; p 1, p 2, p 3 medium-sized; others long; all barbed.

Description — Measurements – Body length: 945 (holotype), 870–945 (paratypes); notogaster width: 600 (holotype), 540–600 (paratypes).

Integument – Body color light brown to brown. Body surface microporose (visible only under high magnification in dissected specimen, × 1000); interbothridial region and lateral part of prodorsum (between bothridium and acetabula I–IV) densely tuberculate.

Prodorsum – Rostrum of typical form, tripartite; median tooth pointed. Lateral side of prodorsum with six to seven strong teeth. Costular-transcostular complex absent. Rostral (101– 123), lamellar (94–120) and interlamellar (187–195) setae setiform, barbed; exobothridial seta (45–49) setiform, slightly barbed; ex thinner than others; bothridial seta (315–345) of typical morphology: spindle-form, with narrowly elongate dilated mediodistal part, barbed. Three pairs of interbothridial muscle sigillae. Basal part of prodorsum with one pair of distinct tubercles and several tuberculate thickenings.

Notogaster – Seta c (56–60) setiform, slightly barbed; others p 1 (, p 2: 142–154; p 3: 116–120;

h 1: 202–225; la, lm, lp, h 2, h 3: 255–300) setiform, barbed. Opisthonotal gland opening and lyrifissures ia, im, ip distinct; ih and ips not observed.

Gnathosoma – Subcapitulum size: 210–229 × 135–150; subcapitular setae (a: 45–52; m: 60–71; h: 71–75) setiform, slightly barbed; both adoral setae (19) setiform, barbed. Chelicera length: 202–206; setae (cha: 56–64; chb: 37–41) setiform, barbed. Palp length: 112–120; postpalpal seta (9) spiniform, roughened.

Epimeral and lateral podosomal regions – Epimeral border IV well visible, oblique.

All epimeral setae (1a, 2a, 3a, 4b: 67–75; 3c: 131–142; others: 94–101) setiform, barbed. Discidium triangular.

Anogenital region – All genital setae (37–41) setiform, slightly barbed; aggenital (101–105), anal (45–49) and adanal (101–105) setae setiform, barbed. Adanal lyrifissure distinct.

Legs – Claw of all legs slightly barbed on dorsal side. Trochanter III with two posterior teeth. Femora I–IV with large ventral porose area. Formulas of leg setation and solenidia: I (1–5–2–4–20) [1–2–2], II (1–5–2–4–16) [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.

Remarks — Amboroppia (Quintanoppia) guatemalaensis n. sp. is similar to A. (Q.) defectofossulata Ermilov and Kontschán, 2023 in having long dorsal notogastral setae la (

clearly beyond the insertion of h 3), but differs from the latter by the larger body length (870–

945 versus 600–660 in A. (Q.) defectofossulata), the morphology of the median tooth of the rostrum (pointed versus rounded in A. (Q.) defectofossulata), and the absence (versus presence

in A. (Q.) defectofossulata) of the costular-transcostular complex and granules in the region between lamellar and interlamellar setae.

Etymology — The species name guatemalaensis refers to the country of origin, Guatemala.

Figures

Figure 1 Amboroppia(Quintanoppia) guatemalaensisn. sp., adult: A – dorsal view (legs omitted); B – ventral view (gnathosoma and legs omitted); C – lateral view (gnathosoma and legs omitted). Scale bar 200 μm.

Figure 2 Amboroppia(Quintanoppia) guatemalaensisn. sp., adult: A – subcapitulum, ventral view; B – palp, right, antiaxial view; C – chelicera, right, antiaxial view; D – leg I, right, antiaxial view; E – leg II (tarsus and trochanter omitted), right, antiaxial view; F – leg III (trochanter omitted), left, antiaxial view; G – leg IV, left, antiaxial view. Scale bar 50 μm (A, C), 20 μm (B), 100 μm (D–G).