Opsonyssus pseudoindicus Bochkov, 2008

Bochkov, Andre V., Zabludovskaya, Svetlana & Oconnor, Barry M., 2008, Phylogeny and systematics of the endoparasitic astigmatid mites (Acari: Sarcoptiformes) of mammals: families Gastronyssidae, Lemurnyssidae, and Pneumocoptidae, Zootaxa 1951 (1), pp. 1-152 : 71-73

3. Opsonyssus pseudoindicus Bochkov et OConnor sp. nov.

( Fig. 32 )

Opsonyssus brutsaerti indica Fain 1959a: 8 (in part, misidentification).

Opsonyssus indicus, Fain 1967: 30 (in part, misidentification).

Description. FEMALE (holotype). Body, including gnathosoma, 330 long (328–345 in 10 paratypes), 165 wide (160–170). Ventral projections of subcapitulum about 25 long, slightly curved, situated ventro-laterally. Posterior margin of propodonotal shield with median projection. Length of propodonotal shield, including median projection, about 55, maximum width about 50. Setae se 5 long (4–6). Idiosoma dorsally finely and irregularly striated. Alveoli of setae 4b and ps3 present or ps3 absent; setae c3 absent. Setae g and h3 represented by alveoli. Setae h2 50 long (50–55). Sternum about 35 long. Lateral projections of sternal branches widely rounded and distinctly developed, about 10 long, 25 wide. Foramen between sternum and fusion of apodemes II present. Posterior projections of coxal fields I widely rounded, distinctly developed, about 13 long, 30 wide. Posterior apodemes of coxal fields II about 25 long, with free distal ends. Apodemes of coxal fields III with free distal ends, about 40 long. Epigynum very small, about 7 long, 4 wide. Inseminatory canal about 25 long. Apodemes of coxal fields IV with free distal ends, 30 long. Setae g situated above to these apodemes. Small sclerotized areas between setae h2 and h3 present. Distance ps3–h3 about 25, 1.4 times greater than h3–h2, about 18. Femora I–II with small dorsal lobe at level of seta vF bases; setae vF I–II about 7 long. Trochanters III–IV ventrally with distinctly developed, widely rounded lobes. Setae kT III situated in median part of tibiae.

MALE (5 paratypes). Body, including gnathosoma, 275–290 long, 125–130 wide. Ventral projections of subcapitulum 20–22 long, slightly curved, situated ventro-laterally. Propodonotum as in female. Propodonotal shield length 50–55, including median projection, maximum width 60–65. Setae se 5–6 long. Idiosoma dorsally finely and irregularly striated. Alveoli 4b, ps2 and microspines ps3 present; setae c3 absent. Setae g and h3 represented by microspines. Setae h2 50–55 long. Sternum about 45 long. Lateral projections of sternal branches widely rounded and distinctly developed, about 8 long, 22 wide. Posterior projections of coxal fields I widely rounded, distinctly developed, about 13 long, 30 wide. Foramen between sternum and fusion of apodemes II present. Posterior apodemes of coxal fields II about 30 long, with free distal ends. Apodemes of coxal fields III with free distal ends, about 35 long. Pregenital sclerite about 5-6 long, 5 wide. Aedeagus about 70 long, crimped in posterior half. Apodemes of coxal fields IV about 25 long. Adanal shields fused to each other, bearing setae h3, ps2, ps3, and pair of non sclerotized patches situated medially near to setae ps3. Femora I–II with small dorsal lobe at level of seta vF bases; setae vF I–II about 7 long. Trochanters III–IV ventrally with distinctly developed, widely rounded lobes. Setae kT III situated in median part of tibiae.

TRITONYMPH. Unknown.

ANOMALIES. One male specimen with long, asymmetrically situated setae ps2 ( Fig. 32E ).

Type material examined. Female holotype, 1 female paratype (HK 87-0406-002) from Ptenochirus jagori ( USNM 459186 ) [eyes], PHILIPPINES: Leyte Prov., Leyte Is., 8.5 km N, 2.5 km E Baybay, 10°46'N ,

124°49'E, 500m, 6 April 1987, L.R. Heaney ( LRH 3132 ); 2 female paratypes ( HK 87-0406 - 001 ) , same data ( NMP), ( LRH 3131 ); 10 female, 5 male, and 2 protonymph paratypes ( HK 87-0404 - 002 ); 1 male paratype ( HK 87-0411 - 001 ) , same host ( USNM 458339 ) , PHILIPPINES: Leyte Prov., Leyte Is., 7kmN Baybay, near Visca , 11 April 1987, coll. E.A. Rickart ( EAR 1437 ) .

Type deposition. Holotype is deposited in USNM, paratypes in NMP, UMMZ.

Non-type material examined. One female and 1 male ( HK 87-0404-003) from Ptenochirus minor Yoshiyuki (Pteropodidae) [eyes], PHILIPPINES: Leyte Prov., Leyte Is., 8.5 km N, 2.5 km E Baybay, 10°46'N, 124°49'E, 500m, 4 April 1987, coll. R.B. Ulzurum ( RBU 177); 1 female and 1 male ( IRSNB) from Macroglossus minimus [eyes], INDONESIA: other data unknown.

Host range and distribution. This species parasitizes megachiropterans in Southeast Asia, Ptenochirus jagori (type host) and Ptenochirus minor from the Philippines (our data) and Macroglossus minimus from Indonesia ( Fain 1959a, as O. indicus ).

Etymology. The species name is derived from the similarities with O. indicus and is a noun in apposition.

Remarks. This new species is closest to O. brutsaerti and O. b. indicus and differs from them by the following characters. In females of O. pseudoindicus sp. nov., the ventral projections of the subcapitulum are about 25 long, situated ventro-laterally; in males the adanal shields are fused to each other and bear a pair of distinct non-sclerotized patches situated medially near setae ps3. In O. brutsaerti and O. b. indicus the ventral projections of the subcapitulum are 35–40 long, situated laterally; in males of O. brutsaerti the adanal shields are not fused to each other and are evenly sclerotized.

Figures

FIGURE 32. Opsonyssus pseudoindicus Bochkov et OConnor sp. nov., female (A–D). A, ventral view; B, propodonotal shield; C, lateral projection of sternum; D, tarsus III in lateral view. Male (E, F). E, opisthosoma in ventral view; F, aedeagus. Scale bars: 100 µm (A, E), 50 µm (B–D, F).