Opsonyssus pteropodi, Bochkov & Zabludovskaya & Oconnor, 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 : 81

Key to the genus Opsonyssus Fain, 1959

Females

1. Setae c3 absent. Lateral lobes of sternal branches present. Propodonotal shield with posterior median projection. Foramen present between sternum and fusion of apodemes II. Apodemes III not fused to each other. Setae g situated anterior to apodemes IV. Setae vF I–II less than 15 long. Setae kT III situated in median part of tibiae ..................... 2

– Setae c3 present. Lateral lobes of sternal branches absent. Propodonotal shield without posterior projection, widely convex. Foramen between sternum and fusion of apodemes II absent. Apodemes III fused to each other. Setae g situated on apodemes IV. Setae vF I–II more than 20 long. Setae kT III situated in basal part of tibiae ......................... 5

2. Setae 4b present. Lateral lobes of sternal branches distinctly developed, 8 or more long ..........................................3

– Setae 4b absent. Lateral lobes of sternal branches very short, 3 long .................. O. pteropodi sp. nov. ( Fig. 33A, B )

3. Ventral projections of subcapitulum situated laterally, 35–70 long ............................................................................. 5

– Ventral projections of subcapitulum situated ventro-laterally, about 25 long ................................................................ ......................................................................................................................... O. pseudoindicus sp. nov. ( Fig. 32A–D )

4. Ventral projections of subcapitulum 35–40 long, not angled basally. Sternal lobes widely rounded, semi-oval .......... ........................................................................................................................... O. brutsaerti Fain, 1956 ( Fig. 30A–D )

– Ventral projections of subcapitulum 60–70 long, angled basally. Sternal lobes shovel-like, with almost parallel lateral margins ......................................................................................................... O. eidoloni Fain, 1959 ( Fig. 31B–E )

5. Posterior projections of coxal fields I absent or weakly developed, setae ps3 present ................................................ 6

– Posterior projections of coxal fields I present, tongue-like, distinctly developed, setae ps3 absent ............................. ............................................................................................................................ O. asiaticus Fain, 1959 ( Fig. 34A–D )

6. Weakly developed posterior lobes of coxal fields I present. Ventral projections of subcapitulum situated laterally .... ........................................................................................................................... O. macroglossus sp. nov. ( Fig. 38A–I )

– Posterior projections of coxal fields I absent. Ventral projections of subcapitulum situated ventro-laterally ............... ................................................................................................................................ O. klompeni sp. nov. ( Figs. 35 , 36 )

Males

(The male of O. macroglossus Bochkov et OConnor sp. nov. is unknown)

1. Setae c3 absent. Lateral lobes of sternal branches present. Propodonotal shield with posterior median projection. Foramen present between sternum and fusion of apodemes II. Apodemes IV not fused to each other. Setae 4b situated off apodemes IV. Setae vF I–II less than 15 long. Setae kT III situated in median part of tibiae ......................... 2

– Setae c3 present. Lateral lobes of sternal branches absent. Propodonotal shield without posterior projection, widely convex. Foramen between sternum and fusion of apodemes II absent. Apodemes IV fused to each other. Setae 4b situated on apodemes IV. Setae vF I–II more than 20 long. Setae kT III situated in basal part of tibiae ......................... 5

2. Setae 4b present. Lateral lobes of sternal branches distinctly developed .................................................................... 3

– Setae 4b absent. Lateral lobes of sternal branches very short .............................. O. pteropodi sp. nov. ( Fig. 33C, D )

3. Ventral projections of subcapitulum situated laterally, 35–70 long. Adanal shields fused, bearing pair of distinct unsclerotized patches situated near setae ps3 ............................................................................................................. 4

– Ventral projections of subcapitulum situated ventro-laterally, about 25 long. Adanal shields separated, without unnon-sclerotized patches .............................................................................. O. pseudoindicus sp. nov. ( Fig. 32E, F )

4. Ventral projections of subcapitulum 35–40 long, not angled basally. Sternal lobes widely rounded, semi-oval .......... ............................................................................................................................ O. brutsaerti Fain, 1956 ( Fig. 30E–K )

– Ventral projections of subcapitulum 60–70 long, angled basally. Sternal lobes shovel-like, with almost parallel lateral margins ........................................................................................................ O. eidoloni Fain, 1959 ( Fig. 31E–K )

5. Posterior projections of coxal fields I absent ........................................................ O. klompeni sp. nov. ( Fig. 35D, E )

– Posterior projections of coxal fields I present, tongue-like, distinctly developed ......................................................... ............................................................................................................................. O. asiaticus Fain, 1959 ( Fig. 34E, F )

Figures

FIGURE 30. Opsonyssus brutsaerti (Fain, 1956), female (A–D). A, ventral view; B, chelicera in lateral view; C, palp in ventral view; D, posterior margin of propodonotal shield. Male (E–K); E, leg I in ventral view; F, leg II in ventral view; G, leg III in ventral view; H, leg IV in ventral view; I, opisthosoma in ventral view; J, aedeagus; K, adanal shield. Scale bars: 100 µm (A, I), 50 µm (B–H, J, K).

FIGURE 31. Opsonyssus spp. O. brutsaerti indicus Fain, 1959, female, A, ventral view. O. eidoloni Fain, 1959 (B–G), female (B–E). B, ventral view; C, propodonotal shield; D, posterior projection of coxal field I; E, foramen between sternum and fusion of apodemes II. Male (F, G). F, aedeagus; G, adanal shields. Scale bars: 100 µm (A, B, C, G), 50 µm (D, F).

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).

FIGURE 33. Opsonyssus pteropodi Bochkov et OConnor sp. nov., female (A, B). A, ventral view; B, propodonotum. Male (C, D). C, opisthosoma in ventral view; D, aedeagus. Scale bars: 100 µm (A–C), 50 µm (D).

FIGURE 34. Opsonyssus asiaticus Fain, 1959, female (A–D). A, ventral view; B, propodonotal shield; C, apodemes I fused with propodonotal shield; D, bursa copulatrix. Male (E, F). E, opisthosoma in ventral view; F, aedeagus. Scale bars: 100 µm (A, E), 50 µm (B–D, F).

FIGURE 35. Opsonyssus klompeni Bochkov et OConnor sp. nov., female (A–D). A, ventral view; B, oviporus; C, tibia and tarsus III in ventral view; D, bursa copulatrix. Male (E, F). E, aedeagus; F, opisthosoma in ventral view. Scale bars: 100 µm (A, F), 50 µm (B–E).

FIGURE 36. Opsonyssus klompeni Bochkov et OConnor sp. nov., female legs I–IV in ventral view (A–D). A, leg I; B, leg II; C, leg III; D, leg IV.

FIGURE 38. Opsonyssus macroglossus Bochkov et OConnor sp. nov., female (A–I). A, subcapitulum in ventral view; B, bursa copulatrix; C, posterior projection of coxal field I; D, coxal apodeme III; E, tibia and tarsus I in ventral view; F, tarsus II in ventral view; H, tarsus III in ventral view.