New species and records of Galumnidae (Acari, Oribatida) from the PhilippinesAuthorErmilov, Sergey G.AuthorCorpuz-Raros, LeonilatextZootaxa20164171177100journal article10.11646/zootaxa.4171.1.3bade423e-c460-431c-a294-c50ab9ec25f61175-53262548426EBA3628-33FC-4756-9EAB-24DFD7BB56C1Pergalumna
(
Pergalumna
)
capualensissp. nov.
(
Figs 1–12
)
Diagnosis.
Body size: 863–929 × 664–697. Body surface microgranulate. Rostrum rounded. Rostral and lamellar setae long, barbed,
le
inserted on strong triangular teeth. Interlamellar setae minute. Bothridial setae setiform, indistinctly barbed. Sejugal and postanal porose areas and median pore present. Anterior notogastral margin not developed medially. Three pairs of porose areas rounded,
Aa
located between setal alveoli
la
and
lm
, nearer to the latter. Subcapitular setae
a
longer and thicker than
m
and
h
. Epimeral formula: 2–0–3–3. Circumpedal carinae directed to pedotecta I.
Description.Measurements
. Species with very large body size. No clear differences between females and males, but females usually larger. Body length: 863 (
holotype
: female), 863–929 (
10 paratypes
:
7 females
and
3 males
); notogaster width: 680 (
holotype
), 664–697 (
10 paratypes
).
Integument
(
Figs 1–4
,
9, 10
). Body color light brown to black. Surface densely microgranulate (diameter of granules up to 1). Centro-basal part of prodorsum and lateral parts of pteromorphs with indistinct, sparse, small foveoles (diameter of foveoles up to 4). Ventral side with two lateral, transverse striate bands between genital and anal plates.
Prodorsum
(
Figs 1–4
,
7–9
). Rostrum slightly protruding, rounded. Lamellar (
L
) and sublamellar (
S
) lines welldeveloped, thin, parallel, curving backwards. Rostral (
ro
, 73–77) and lamellar (
le
, 69–73) setae setiform, barbed, directed antero-medially;
le
inserted on strong triangular teeth (
t
). Interlamellar setae (
in
, 6–8) thin, smooth. Bothridial setae (
bs
, 118–127) setiform, thickened, indistinctly barbed, directed postero-laterad. Exobothridial setae and their alveoli absent. Sejugal porose areas (
Ad
) oval (10–12 × 6–8), transversely oriented.
Notogaster
(
Figs 1
,
3, 5
,
9, 10
). Anterior notogastral margin not developed medially. Dorsophragmata (
D
) elongated longitudinally. Notogastral setae represented by 10 pairs of alveoli. Three pairs of porose areas rounded, with clear borders:
A1
(16–20) larger than
Aa
and
A3
(both pairs 10–12). Porose areas
Aa
located between setal alveoli
la
and
lm
, nearer to the latter. Median pore (
mp
) present in males and females, large (similar to
Aa
and
A
3
in size), inserted posterior to the virtual line connected porose areas
A1
. All lyrifissures (
ia
,
im
,
ip
,
ih
,
ips
) distinct,
im
located anterior to
A1
and slightly distanced from them. Opisthonotal gland openings (
gla
) located laterally to
A1
.
Gnathosoma
(
Fig. 6
). Morphology of subcapitulum, palps and chelicerae as described in
GalumnaHeyden, 1826
and
PergalumnaGrandjean, 1936
(e.g.
Engelbrecht 1969
;
Ermilov & Anichkin 2011
; Ermilov
et al
. 2011, 2014
c
;
Bayartogtokh & Akrami 2014
). Subcapitulum size: 205–221 × 180–188. Subcapitular setae setiform, slightly barbed,
a
(28–36) longer and thicker than
m
(24–32) and
h
(16–20). Two pairs of adoral setae (
or
1,
or
2, 20– 28) setiform, heavily barbed. Palp length: 159–164. Palp formula is typical (0–2–1–3–9+1ω). Axillary saccules distinct, elongated. Chelicera length: 261–270. Cheliceral setae setiform, barbed,
cha
(69–73) longer than
chb
(53– 57). Trägårdh’s organ elongate triangular, rounded distally.
Epimeral and lateral podosomal regions
(
Figs 2
,
3
,
11
). Anterior margin of epimere I smooth. Setal formula: 2–0–3–3. Setae
3c
and
4c
(41–53) longer than
1b
(36–45),
3b
(22–24) and
4a
and
4b
(12), all slightly barbed, setae
1a
and
3a
minute (2), smooth, poorly visible. Pedotecta II (Pd II) trapezoid distally in ventral view. Discidia (
dis
) sharply triangular. Circumpedal carinae (
cp
) directed to pedotecta I.
Anogenital region
(
Figs 2
,
11
). Six pairs of genital (
g
1, 28–36;
g
2, 24–32;
g
3, 16–24;
g
4–
g
6, 10–14), one pair of aggenital (
ag
, 8), two pairs of anal (
an
1,
an
2, 8) and three pairs of adanal (
ad
1–
ad
3, 8) setae setiform, thin, slightly barbed. Genital plates with three genital setae on anterior edges,
g
1 and
g
2 inserted close to each other and distanced from
g
3. Aggenital setae inserted between genital and anal apertures, clearly nearer to the former. Adanal lyrifissures (
iad
) located close and parallel to anal plates. Setae
ad
3 inserted laterally or antero-laterally to
iad
. Distance
ad
1–
ad
2 shorter than
ad
2–
ad
3. Postanal porose area (
Ap
) present, oval (16–18 × 6–8), transversely oriented.
FIGURE 2
.
Pergalumna
(
Pergalumna
)
capualensissp. nov.
, adult: ventral view (subcapitulum and legs not shown). Scale bar 200 µm.
FIGURES 3–6
.
Pergalumna
(
Pergalumna
)
capualensissp. nov.
, adult: 3—anterior part of body, lateral view (subcapitulum and legs not shown); 4—rostrum, frontal view; 5—posterior view (pteromorphs not shown); 6—anterior part of subcapitulum, ventral view. Scale bars 200 µm (3–5), 50 µm (6).
Legs
(
Fig. 12
). Morphology of leg segments, setae and solenidia as described in
GalumnaHeyden, 1826
and
PergalumnaGrandjean, 1936
(e.g.
Engelbrecht 1969
;
Ermilov & Anichkin 2011
; Ermilov
et al
. 2011, 2014
c
;
Bayartogtokh & Akrami 2014
). Claws strong, serrate on dorsal sides, median claw (cl m) slightly thicker than laterals (antiaxial (cl a) and paraxial (cl p) claws). Formulas of leg setation and solenidia: I (
1–4–3–4–20
) [1–2–2], II (
1–4–3–4–15
) [1–1–2], III (
1–2–1–3–15
) [1–1–0], IV (
1–2–2–3–12
) [0–1–0]; homology of setae and solenidia indicated in
Table 1
. Solenidia φ of tibiae IV inserted dorsally in distal part of segments.
Material examined.Holotype
(female) and
8 paratypes
(
5 females
and
3 males
):
Luuk
municipality in Capual
Island
,
Sulu Province
,
Philippines
,
13 December 2003
, collected by
C. Espanola
, sample of litter in mangrove forest.
Other
material
:
1 female
:
Sibulan watershed
,
Polillo
municipality, Polillo
Island
,
Quezon Province
,
Philippines
,
27 September 2003
, collected by
Ireneo L.
Lit, Jr. and
Orlando L.
Eusebio, sample of decaying log
;
1 female
:
Mt. Malindang
,
Barangay
Lake
Duminagat
,
Don Victoriano
municipality,
Misamis
Occidental Province
, Mindanao
Island
,
Philippines
,
16 August 2001
, collected by
William Sm. Gruezo
, sample of leaf litter from secondary forest.
Type deposition.
The holotype (alcohol) and two paratypes (alcohol) are deposited in the collection of the Senckenberg Institute, Görlitz, Germany; 6 paratypes (alcohol) and other material (2 specimens) (alcohol) are in the collection of the Tyumen State University Museum of Zoology, Tyumen, Russia.
Etymology.
The specific name
capualensis
refers to the Philippine
Island
, Capual, where the
holotype
and the majority of
paratypes
were collected.
FIGURES 7–12
.
Pergalumna
(
Pergalumna
)
capualensissp. nov.
, adult, microscope images: 7—part of prodorsum, lateral view; 8—bothridial seta; 9—part of sejugal region, right half; 10—part of pteromorph; 11—part of podosomal region, ventral view; 12—leg claws on tarsus III, left, antiaxial view. Scale bars 50 µm.
Remarks.Pergalumna
(
Pergalumna
)
capualensissp. nov.
is morphologically most similar to
P.
(
Pergalumna
)
bimaculataHammer, 1973
from
Tonga
Islands and the
Philippines
and
P.
(
Pergalumna
)
remota
(
Hammer, 1968
)
from
New Zealand
and
India
in having setiform bothridial setae, three pairs of notogastral porose areas, localization of porose areas
Aa
(near setal alveoli
lm
), very large median pore and the absence of anterior margin of notogaster. However, the new species differs from both by the larger body length (863–929
vs
.
720 inP.
(
P.
)
bimaculata
and
670 inP.
(
P.
)
remota
) and the presence of strong teeth on prodorsum (
vs
. absent).
TABLE 1
. Leg setation and solenidia of adult
Pergalumna
(
Pergalumna
)
capualensissp. nov.
,
Setogalumna minisetosasp. nov.
,
Trichogalumna interlamellarissp. nov.
and
Pergalumna
(
Pergalumna
)
crassipora
Mahunka, 1995
.
Note: Roman letters refer to normal setae, Greek letters to solenidia (except ɛ = famulus). Single prime (
'
) marks setae on the anterior and double prime (
"
) setae on the posterior side of a given leg segment. Parentheses refer to a pair of setae. Tr—trochanter, Fe—femur, Ge—genu, Ti—Tibia, Ta—tarsus.