Sternoppia, Balogh & Mahunka, 1968

Ermilov, Sergey G., Subías, Luis S., Shtanchaeva, Umukusum Ya. & Friedrich, Stefan, 2022, A new subgenus and three new species of Sternoppia (Acari, Oribatida, Sternoppiidae) from Peru, Zootaxa 5195 (4), pp. 373-384 : 381-382

Key to known species of the genus Sternoppia

1. Bothridial seta bacilliform, with slightly developed, not ciliated head; interbothridial region with two pairs of tubercles; adanal setae not ciliated; body length: 660–720............................. Sternoppia (Andoppia) tetratuberculata sp. nov.

- Bothridial seta setiform or slightly fusiform, unilaterally ciliated; interbothridial region without or with one pair of tubercles; adanal setae ciliated................................................................................. (2)

2. Cilia of bothridial seta simple......................................................................... (3)

- Cilia of bothridial seta furcate....................................................................... … (5)

3. Bothridial seta without clearly developed head; notogastral seta c represented by alveolus; notogastral seta lm not reaching insertion of lp; body length: 775–850 …........................... Sternoppia (Sternoppia) pocsiana Mahunka, 2006 .

- Bothridial seta with clearly developed head; notogastral seta c represented by seta; notogastral seta lm reaching insertion of lp …............................................................................................... (4)

4. Notogastral seta lp distinctly shorter than lm; interlamellar seta distinctly shorter than lm; insertions of epimeral setae 3a distant from each; body length: 300–360…................................. Sternoppia (Sternoppia) chinchaoensis sp. nov.

- Notogastral seta lp similar to lm in length; interlamellar seta slightly differs from lm in length; insertions of epimeral setae 3a located close to each other; body length: 347....................................................................................… Sternoppia (Sternoppia) quadriseta (Balogh & Mahunka, 1969) (see Balogh & Mahunka 1969b).

5. Notogastral seta lm located clearly posteromedially to la .................................................. … (6)

- Notogastral setae la and lm located on the same transverse level or lm located clearly anteromedially to la ….......... (7)

6. Bothridial seta with six or seven cilia; interlamellar seta shorter than bothridial seta; dorsal notogastral setae (e.g., la, lm, lp) about 4/5 of distance lm–lp; body length: 273–322 …........ Sternoppia (Sternoppia) mirabilis Balogh & Mahunka, 1968 .

- Bothridial seta with two or three cilia; interlamellar seta longer than bothridial seta; dorsal notogastral setae (e.g., la, lm, lp) about 1/2 of distance lm–lp; body length: 365–415 …........................................................................................ Sternoppia (Sternoppia) paramirabilis Ermilov, Sandmann, Marian & Maraun, 2013 .

7. Notogastral setae la and lm located on the same transverse level …............................................ (8)

- Notogastral setae lm located clearly anteromedially to la ….................................................. (9)

8. Bothridial seta without head; rostrum pointed; notogastral seta c distinctly longer than other notogastral setae; 10 pairs of notogastral setae (p 3 present); body length: 426–450 …................................................................................ Sternoppia (Sternoppia) boliviana Balogh & Mahunka, 1969 (see Balogh & Mahunka 1969b).

- Bothridial seta with head; rostrum with one pair of lateral tubercles; notogastral seta c similar to other notogastral setae in length; nine pairs of notogastral setae (p 3 absent); body length: 209–237 …........................................................................... Sternoppia (Sternoppia) fissurata Ermilov, Sandmann, Marian & Maraun, 2013 .

9. Dorsal notogastral setae (e.g., la, lm, lp) about 1/2–1/4 of distance lm–lp .................................... … (10)

- Dorsal notogastral setae (e.g., la, lm, lp) about 3/4 of distance lm–lp or as distance lm–lp …....................... (12)

10. Notogastral seta c represented by alveolus; body length: 331–357.................................................................................................. … Sternoppia (Sternoppia) incisa Balogh & Mahunka, 1977 .

- Notogastral seta c represented by seta …................................................................ (11)

11. Rostrum with one pair of lateral tubercles; bothridial seta without head; notogastral lyrifissure ia located anteromedially to insertion of c; anterior part of notogaster not striate; body length: 262–295........................................................................ … Sternoppia (Sternoppia) paraincisa Ermilov, Sandmann, Marian & Maraun, 2013 .

- Rostrum without tubercles; bothridial seta with large clavate head; notogastral lyrifissure ia located posterolaterally to insertion of c; anterior part of notogaster longitudinally striate; body length: 252–267.................................................................................................. … Sternoppia (Sternoppia) striata Mahunka, 1983 .

12. Epimere I without heavy striate or reticulate pattern ….................................................... (13)

- Epimere I with heavy striate or/and reticulate pattern ….................................................... (14)

13. Notogastral seta c represented by seta; notogastral setae la, lm, lp longer than other notogastral setae; epimeres I, II with sparse tubercles; body length: 465–525.................................. … Sternoppia (Sternoppia) americaensis sp. nov.

- Notogastral seta c represented by alveolus; notogastral setae la, lm, lp similar to other remaining notogastral setae in length; epimeres I, II without tubercles; body length: 290 …......... Sternoppia (Sternoppia) brasiliensis Franklin & Woas, 1992 .

14. Epimere I with reticulate and striate pattern simultaneously; body length: 267–317.................................... Sternoppia (Sternoppia) reticulata Balogh & Mahunka, 1969 (see Balogh & Mahunka 1969a; see also Balogh & Mahunka 1978).

- Epimere I with only striate pattern (reticulate pattern absent) …............................................. (15)

15. Bothridial seta thickened, without clear head; body length: 365–405 …................................................................................................ Sternoppia (Sternoppia) vicina Balogh & Mahunka, 1980 .

- Bothridial seta with large clavate head …............................................................... (16)

16. Epimere I with one pair of holes; six pairs of genital setae; body length: 196–208 …...................................................................................... Sternoppia (Sternoppia) minor Balogh & Mahunka, 1980 .

- Epimere I without holes; five pairs of genital setae; body length: 534–615.................................................................................... … Sternoppia (Sternoppia) sphaerodendron Balogh & Mahunka, 1979 .