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).