Pulchroppia marianae, ErmilovK & SandmannK & ScheuK, 2023

ErmilovK, Sergey G., SandmannK, Dorothee & ScheuK, Stefan, 2023, New species of Pulchroppia (Acari, Oribatida, Oppiidae) from Indonesia, Acarologia 63 (3), pp. 725-734 : 730-732

Pulchroppia marianae n. sp.

Zoobank: AF6911A0-4AFF-43BB-84F7-1E5CA7E30A02

( Figure 3 )

Additional pictures are available in the online repositoryhttps://www.ecotaxonomy.org: ECOTAX_ID: 405881

Type material — Holotype (male) and four paratypes (two males and two females): Indonesia, Sumatra, Bukit Duabelas , secondary rainforest, 01°58′55.1″S, 102°45′02.7″E,

litter. Specimens were collected by Bernhard Klarner (November 2013) and identified to morphospecies level by Dorothee Sandmann.

The holotype is deposited in the collection of the BRIN (National Research and Innovation Agency), Cibinong, Indonesia ; four 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: 450–555. Interbothridial region tuberculate; notogaster and anogenital region foveolate. Rostrum narrowly rounded, with two small lateral incisions. Rostral and lamellar setae medium-sized, setiform, slightly barbed; interlamellar seta setiform, erect, slightly barbed; exobothridial seta longer than lamellar seta; bothridial seta with four branches. Notogastral seta c represented by microseta, others long, setiform, with flagellate tip, shortly ciliate. Ventrosejugal tubercles present. Discidium developed. Adanal setae setiform, with flagellate tip, shortly ciliate. Adanal lyrifissure slightly inverse oblique. Leg trochanter IV with anterodorsal tooth.

Description — Measurements – Body length: 510 (holotype: male), 450, 495 (two male paratypes); 540, 555 (two female paratypes); body width: 270 (holotype), 263, 270 (two male paratypes); 300, 330 (two female paratypes). Males smaller than females in body size.

Integument – Body color light brown to brown. Notogaster and anogenital region foveolate (diameter of foveola up to 7); interbothridial region with some large tubercles (diameter up to 13); lateral part of body between bothridium and acetabula I–III densely microtuberculate (diameter of tubercle up to 4).

Prodorsum – Rostrum protruding, narrowly rounded, with two small lateral incisions. Costulae present but poorly visible; transcostula not observed. Rostral (30–37) and lamellar (22–24) setae setiform, slightly barbed; interlamellar (56–64) and exobothridial (34–41) setae setiform, erect, slightly barbed; ex located on tubercle; bothridial seta (105–116) with four branches; of them, distal branch the shortest, proximal branch the longest. Interbothridial region without muscle sigillae. Postbothridial tubercle present.

Notogaster – Anterior border convex medially. Notogastral seta c (1–2) represented by microseta, others (p 1: 41–45; la, lm, lp, h 1 – h 3, p 2, p 3: 82–86) setiform, with flagellate tip, shortly ciliate; lm and lp reaching or almost reaching the insertions of lp and h 2, respectively.

All notogastral lyrifissures and opisthonotal gland opening distinct.

Gnathosoma – Mostly similar to P. richterae n. sp. except sizes. Subcapitulum size: 124–131 × 82–86; subcapitular setae (a: 20–22; m, h: 34–37) setiform, slightly barbed; both adoral setae (13–15) dilated and truncate distally, smooth. Palp length: 82–86; postpalpal seta (4) spiniform, smooth. Chelicera length: 124–131; setae (cha: 28–30; chb: 20–22) setiform, barbed.

Epimeral and lateral podosomal regions – Epimeral setae 3c (49–52), 3b, 4c (41–45) setiform, slightly barbed, others 1b (: 15–19; 4a, 4b: 13–15; 1a, 1c, 2a, 3a: 11–15) setiform, roughened or slightly roughened; 3a located at the base of well-developed ventrosejugal tubercle. Discidium elongate triangular.

Anogenital region – Genital (g 1: 15; others: 11) and aggenital (13–15) setae setiform, slightly roughened; adanal setae (45–52) setiform, with flagellate tip, shortly ciliate; anal seta (22–30) setiform, slightly barbed. Adanal lyrifissure slightly inverse oblique, close to anal aperture.

Legs – Similar to P. richterae n. sp. ; homology of setae and solenidia indicated in Table 1.

Remarks — Pulchroppia marianae n. sp. differs from all representatives of the genus by the presence (versus absence) of foveolate notogaster and anogenital region.

Etymology — The species name is dedicated to Dr. Franca Marian for her contributions to the ecological and taxonomic knowledge of the oribatid mites of Ecuador. She was instrumental in establishing the morphospecies collection of oribatid mites of Podocarpus National Park and surrounding areas in southern Ecuador and in digitally recording this collection.

Figures

Figure 3 Pulchroppia marianaen. sp., adult: A – dorsal view (legs omitted); B – ventral view (legs omitted); C – lateral view (gnathosoma and legs omitted). Scale bar 100 μm.