Frontipodopsis (Frontipodopsella) cuspidata, Semenchenko, Ksenia A., 2016

Semenchenko, Ksenia A., 2016, New water mites species (Acariformes: Hydrachnidia) from interstitial waters of the Russian Far East, Zootaxa 4097 (4), pp. 545-556: 551

publication ID

http://doi.org/10.11646/zootaxa.4097.4.6

publication LSID

lsid:zoobank.org:pub:FFB7A1C6-3EB4-4722-935D-001A88FDCCC6

persistent identifier

http://treatment.plazi.org/id/03F8701B-951E-5174-FF2C-FECF0A23F926

treatment provided by

Plazi

scientific name

Frontipodopsis (Frontipodopsella) cuspidata
status

sp. n.

Frontipodopsis (Frontipodopsella) cuspidata   sp. n.

( Figs 4 A –D View FIGURE 4 A – D , 5 A –E View FIGURE 5 A – E )

Type series. Holotype: male ( X 44821 View Materials /Ar- 28), Russia, Primory Territory, Partizansky District, Partizanskay River basin, Tigrovaya River, N 43 ° 11.401 ’; E 133 ° 12.660 ’; depth 30 cm below the sediment surface; substrate: cobbles, pebbles, sand; 12.06.2010, leg. K.A. Semenchenko, D.A. Sidorov. Paratypes: 1 male ( X 44855 View Materials /Ar- 33), 2 females ( X 44856 View Materials /Ar- 34), same data as holotype. Additional material examined (not included in the type series; not mounted, in Koenike’s fluid): 5 males and 13 females, same data as holotype.

Diagnosis. Adults. Ventral shield posteriorly with long pointed projection.

Description. Both sexes. Idiosoma laterally compressed ( Fig. 4 A View FIGURE 4 A – D ). Dorsum ( Fig. 4 B View FIGURE 4 A – D ) with medial strip of unsclerotised integument bearing anterior sclerite with Oi and three slender platelets; dorsal furrow with three pairs of slit organs (two anterior of which fused with glandularia platelets). Opening for insertion of fourth legs rounded, located in anterior one-third of idiosoma, without condyles; insertions of other legs at anterior end of body. Anterior part of idiosoma reticulated. Median suture line between Cx-IV absent. Ventral shield posteriorly with a pointed projection. Genital field fused with secondary sclerotization, with three pairs of acetabula and 10–14 pairs of thin setae in males ( Fig. 4 C View FIGURE 4 A – D ) and 7–10 in females ( Fig. 4 D View FIGURE 4 A – D ). Distance between second and third acetabula subequal to length of second acetabula or slightly longer, but may be shorter (in males). Male’s ejaculatory complex as illustrated on Fig. 5 A View FIGURE 5 A – E . Excretory pore free in dorsal furrow. P- 1 ( Fig. 5 B View FIGURE 5 A – E ) with one dorsodistal seta; P- 2 with three dorsoproximal setae and two dorsodistal ones; P- 3 with two dorsodistal setae; P- 4 with two ventral setae and short distoventral spine. II-Leg- 5 and III-Leg- 5 with two swimming setae ( Figs 5 C, D View FIGURE 5 A – E ). Leg IV modified, segments as illustrated in Fig. 5 E View FIGURE 5 A – E .

Male. Measurements (n= 2). Idiosoma L 429–430, H 260–265; ventral shield L 376–390, H 220–231; genital field L 92–100; ejaculatory complex L 90–120; length of genital acetabula (Ac. 1–3): 22–29, 26 – 27, 18 – 20; gnathosoma vL 86–96; pedipalpal segments (P – 1–5) L: 20–24, 48 – 53, 26 – 27, 48–51, 22 – 24; leg segments L: I – Leg – 1–6 — 30–32, 48– 51, 43 – 44, 49–50, 67 – 68, 78–79; II –Leg – 1–6 — 36 –39, 51– 54, 41 – 43, 50–51, 65 – 67, 80–86; III –Leg – 1–6 — 35 –37, 51– 56, 38 – 43, 54–56, 73 – 75, 82–86; IV –Leg – 1–6 — 103–110, 51 –?, 72–73, 79 – 89, 95–99, 72 – 73.

Female. Measurements (n= 2). Idiosoma L 449–482, H 294–306; ventral shield L 396–429, H 264–270; genital field L 125–132; length of genital acetabula (Ac. 1–3): 27–31, 23 – 30, 22 – 23; gnathosoma vL 108 –?; pedipalpal segments (P – 1–5) L: 22–27, 55 – 56, 30 – 32, 49–54, 24 – 25; leg segments L: I –Leg – 1–6 — 34 –35, 55– 56, 42 – 43, 51– 54, 67 – 70, 75–77; II –Leg – 1–6 — 38 –40, 59– 60, 40 – 46, 51–62, 70 – 81, 84–86; III –Leg – 1–6 — 40 –43, 56– 59, 44 – 46, 59–60, 81 – 82, 83–87; IV –Leg – 1–6 — 121–124, 54 – 59, 80–81, 94 – 97, 92 – 94, 75 – 76.

Differential diagnosis. The present species is similar to F. reticulatifrons Szalay, 1945   , with its four subspecies: F. r. reticulatifrons   Szalay, 1945; F. r. okinawaensis Imamura, 1957   ; F. r. i nd i c u s Cook, 1967; F. r. persica Schwoerbel & Sepasgosarian, 1980. The new species is most similar to the first two subspecies due to the proportions of idiosoma (see table with comparison of the subspecies on the base of these parameters in Schwoerbel & Sepasgosarian 1980). Frontipodopsis cuspidata   sp. n. differs from all known species of the genus in having a pointed projection of the posterior part of the ventral shield, while in other species it is absent or slightly visible, as in Frontipodopsis nearctica Cook, 1963   .

Etymology. The species epithet “ cuspidata   ” is derived from the pointed projection of posterior part of the ventral shield.

Distribution. Primory Territory, Far East of Russia.