A new subgenus and two new species of oribatid mites (Acari, Oribatida) from MadagascarAuthorErmilov K, Sergey G.Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, Tyumen, Russia.AuthorFrolov K, Andrey V.Zoological Institute of Russian Academy of Sciences, Saint Petersburg, Russia.textAcarologia20222022-08-29623798810https://www1.montpellier.inrae.fr/CBGP/acarologia/article.php?id=4517journal article10.24349/eyzw-dpwh2107-7207Lucoppia ankaratraensisn. sp.
Zoobank:
AE6B6891-F377-44BB-BA3B-45861BA3DB81
(
Figures 4–6
)
Diagnosis
— Body length: 415–481.
Notogaster
and anogenital region with small foveolae. Rostrum pointed. Rostral, lamellar and interlamellar setae long, setiform, erect, barbed;
ro
shortest and thinnest,
in
longest and thickest; bothridial seta short, globular, roughened. Notogastral setae long, stiff, erect
c
(,
p1
–
p3
shorter than others). Epimeral, genital and aggenital setae short, setiform, thin, slightly barbed; four pairs of genital setae. Anal and adanal setae short, stiff, thin, slightly barbed. Leg tarsus I with 19 setae
l″
(absent).
Description of adult
— Measurements – Body length: 415 (
holotype
, male), 415 (
one maleparatype
); 448–481 (
six paratype females
); body width: 249 (
holotype
), 249 (
one maleparatype
); 282–298 (
six paratype females
).
Table 1
Leg setation and solenidia of adult
Afreremella
(
Arboreremella
)
madagascarensisn. sp.
Note: Roman letters refer to normal setae (except ɛ = famulus); Greek letters refer to solenidia. Single quotation mark (
'
) designates seta on the anterior and double quotation mark (
"
) seta on the posterior side of a given leg segment; parentheses refer to a pair of setae.
Figure 4Lucoppia ankaratraensisn. sp.
, adult: a – dorsal view (legs omitted); b – ventral view (gnathosoma and legs omitted); c – lateral view (gnathosoma and legs omitted). Scale bar 120 μm.
Figure 5Lucoppia ankaratraensisn. sp.
, adult: a – posterior view; b – subcapitulum, ventral view; c – palp, left, paraxial view; d – chelicera, left, paraxial view. Scale bars 120 μm (a), 25 μm (b–d).
Integument – Body light brown to brown. Surface covered by layer of dense microgranulate cerotegument.
Notogaster
and anogenital region sparsely foveolate (diameter of foveola up to 4). Region between costulae with indistinct transverse ridges. Antiaxial side of tarsi I–IV and paraxial side of tarsi I–IV, tibiae I–IV and femora I–IV partially with transverse rugosities.
Prodorsum – Rostrum with triangular projection, pointed. Lamella about 1/4 length of prodorsum, connected by thin, straight or slightly convex medially translamella. Tutorium well developed. Rostral seta (73–82) setiform, barbed, inserted on tubercle; lamellar (98–106) and interlamellar (123–131) setae setiform, erect, barbed, inserted on tubercles;
in
slightly thicker than
le
,
le
slightly thicker than
ro
; exobothridial seta (28–36) setiform, thin, slightly barbed; bothridial seta (28–32) globular, roughened. Dorsosejugal porose area oval (12 × 4), located posterior to
in
.
Notogaster
– Anterior margin distinctly convex medially. Fourteen pairs of stiff, erect notogastral setae (
c
: 41–49;
p1
: 49–65;
p2
: 45–49;
p3
: 41–45; others: 69–77). Porose area
Aa
elongate oval (24–26 × 8–10);
Aa
oval (14–16 × 8–10);
A1
and
A2
rounded (10–16). Opisthonotal gland opening and all lyrifissures well visible.
Gnathosoma
– Subcapitulum size: 123–131 × 98–102. Subcapitular (
a
: 20;
m
,
h
: 28–32)
and adoral (10) setae setiform, thin, slightly barbed. Palp (length: 77–86) with typical setation: 0–2–1–3–9(+ω). Postpalpal seta (8) spiniform, roughened. Chelicera (length: 123–131) with two setiform, barbed setae (
cha
: 36–38;
chb
: 24–26).
Epimeral and lateral podosomal regions – Epimeral setae
1
(
a
,
2a
,
3a
: 16–20; others: 28–32) setiform, thin, slightly barbed;
1c
,
3c
and
4c
slightly thicker than others. Discidium triangular, tubercle-like distally. Circumpedal carina distinct.
Figure 6Lucoppia ankaratraensisn. sp.
, adult: a – leg I, right, antiaxial view; b – leg II, right, antiaxial view; c – leg III, left, antiaxial view; d – leg IV, left, antiaxial view. Scale bar 60 μm.
Anogenital region – Four pairs of genital setae. Genital (16–20) and aggenital (28–32)setae setiform, thin, slightly barbed; anal (16–20) and adanal (16–24) setae stiff, thin, slightly barbed. Adanal lyrifissure diagonal. Postanal porose area distinct.Legs – Median claw clearly thicker than lateral claws; all slightly barbed on dorsal side; lateral claw with tubercle distoventrally. Proximoventral porose area on tarsi I–IV, distoventral porose area on tibiae I–IV and dorsoparaxial porose area on femora I–IV and on trochantersIII, IV distinct. Formulas of leg setation and solenidia: I (1–4–3–4–19) [1–2–2], II (1–5–2–
4–15) [1–1–2], III (2–3–1–3–15) [1–1–0], IV (1–2–2–3–12) [0–1–0]; homology of setae and solenidia indicated in
Table 2
. Solenidia
1
φof tibia I and φ of tibiae II–IV very long, setiform;
φ of tibia IV swollen distally; σ of genu III short, bacilliform, slightly bent mediodistally; others medium-sized, rod-like. Famulus short, erect, slightly swollen distally, inserted between solenidion ω
2
and seta
ft″
.
Material examined
—
Holotype
(male) and
seven paratypes
(
one male
and
six females
):
Madagascar
,
Ankaratra Mt.
,
19°20′32″S
,
47°18′03″E
,
1980 m
a.s.l.
, from bushes (swiping),
24.02.2022
(leg. A.
V
. Frolov).
Type deposition
— The
holotype
is deposited in the collection of the Zoological Institute, Russian Academy of Sciences,
Saint-Petersburg
,
Russia
;
seven paratypes
are deposited 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.
Etymology
— The name
ankaratraensis
refers to the place of origin, Ankaratra Mt.
Remarks
— Distinctive characters of the new species from the other
Lucoppia
species
can be found in the identification key below.