Amboroppia

ErmilovK, Sergey G., 2024, Two new species of Amboroppia (Quintanoppia) (Acari, Oribatida, Oppiidae) from Guatemala, Acarologia 64 (2), pp. 315-322 : 319-321

Amboroppia ( Quintanoppia) zacapaensis n. sp.

Zoobank: C08A48CB-47BB-4C0C-BB08-674524F25E33

( Figure 3 )

Type material — Holotype (male) and three paratypes ( three 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 ; three 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: 810–900. Interbothridial region of prodorsum tuberculate. Median tooth of rostrum rounded. Five 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, h 1, p 1, p 2, p 3 short, others medium-sized; all barbed.

Description — Measurements – Body length: 870 ( holotype), 810–900 ( paratypes); notogaster width: 570 ( holotype), 525–585 ( 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 rounded. Lateral side of prodorsum with five to seven strong teeth. Costular-transcostular complex absent. Rostral (82–86), lamellar (71–79) and interlamellar (139–150) setae setiform, barbed; exobothridial

seta (41–49) setiform, slightly barbed; ex thinner than others; bothridial seta (202–221) of

typical morphology: spindle-form, with narrowly elongate dilated mediodistal part, barbed. Three or four pairs of interbothridial muscle sigillae. Basal part of prodorsum with one pair of distinct tubercles and several tuberculate thickenings.

Notogaster – Seta c (36–45) setiform, slightly barbed; others h ( 1, p 1, p 2, p 3: 56–64; la, lm,

lp, h 2, h 3: 135–172) setiform, barbed. Opisthonotal gland opening and lyrifissures ia, im, ip distinct; ih and ips not observed.

Gnathosoma – Similar to Amboroppia ( Quintanoppia) guatemalaensis n. sp. except sizes: subcapitulum size: 195–210 × 123–135; a: 45–52; m: 56–60; h: 64–71; adoral setae: 19; chelicera length: 187–195; cha: 49–52; chb: 30–34; palp length: 94–105; postpalpal seta: 9.

Epimeral and lateral podosomal regions – Epimeral border IV well visible, oblique. All epimeral setae ( 1a, 2a, 3a, 4b: 49–64; 3c: 101–109; others: 75–86) setiform, barbed. Discidium triangular.

Anogenital region – All genital setae (34–37) setiform, slightly barbed; aggenital (82–86), anal (37–41) and adanal (82–86) setae setiform, barbed. Adanal lyrifissure distinct.

Legs – Similar to Amboroppia ( Quintanoppia) guatemalaensis n. sp.

Remarks — Amboroppia ( Quintanoppia) zacapaensis n. sp. differs from A. ( Q.) defectofossulata Ermilov and Kontschán, 2023 and A. ( Q.) guatemalaensis n. sp. by the length of dorsal notogastral setae (medium sized versus long in A. ( Q.) defectofossulata and A. ( Q.) guatemalaensis).

Etymology — The species name zacapaensis refers to the department of origin, Zacapa.

General remarks

Two of the generic morphological traits of Amboroppia are: the presence of prodorsal costulae and transcostula ( Ermilov and Kontschán 2023), and body length 400–700. However, the costular-transcostular complex absent in A. ( Q.) guatemalaensis n. sp. and A. ( Q.) zacapaensis n. sp., and their body length 810–945. Hence, we propose to correct these characteristics in the generic diagnosis of Amboroppia : costular-transcostular complex present or absent, and body length in the interval 400–1000.

Figures

Figure 3 Amboroppia(Quintanoppia) zacapaensisn. sp., adult: A – dorsal view (legs omitted); B – ventral view (gnathosoma and legs omitted); C – lateral view (legs omitted). Scale bar 200 μm.