New records of Tardigrada from Bulgaria with the description of Macrobiotus binieki sp. nov. (Eutardigrada: Macrobiotidae) and a key to the species of the harmsworthi group
Author
Kaczmarek, Łukasz
Author
Gołdyn, Bartłomiej
Author
Prokop, Zofia M.
Author
Michalczyk, Łukasz
text
Zootaxa
2011
2781
29
39
journal article
47870
10.5281/zenodo.206999
f488c32f-c9a5-4c9c-9326-75a0ec9e287b
1175-5326
206999
Key to the species of the
harmsworthi
group
1. Cuticle either with pores, or granulation, or stripes of pigmentation............................................. 2
-. Cuticle smooth....................................................................................... 9
2(1). Pores in cuticle present, granulation and stripes of pigmentation absent........................................... 3
-. Pores in cuticle absent, granulation or stripes of pigmentation present............................................ 4
3(2). Egg shell smooth, processes in the shape of low cones (mammillate-like) without finger-like structures at the process base, bubble-like structures at the top of processes present, 16–21 processes on the egg circumference........................
.......................................................................
M. krynauwi
Dastych & Harris, 1995
-. Egg shell covered with dots, processes in the shape of high cones with finger-like structures at the process base, bubble-like structures at the top of processes absent, 6–8 processes on the egg circumference..............
M. liviae
Ramazzotti, 1962
4(2). Nine bands of brown pigmentation on cuticle present*...................................
M. baltatus
McInnes, 1991
-. Cuticle without bands of pigmentation..................................................................... 5
5(4). Granulation on cuticle in the shape of large tubercles (1.5–2.0), present only on the caudal end of the body........................................................................................
M. arguei
Pilato & Sperlinga, 1975
-. Granulation present on the entire dorsal side of the body....................................................... 6
6(5). Granulation on cuticle in the shape of small tubercles, eyes present.............................................. 7
-. Granulation on cuticle in the shape of fine dots; eyes absent................................................... 8
7(6). First band of teeth in the oral cavity armature and granulation on legs I–III absent, lunules IV smooth..............................................................................................
M. perfidus
Pilato and Lisi, 2009
-. First band of teeth in the oral cavity armature and granulation on legs I–III present, lunules IV dentate.........................................................................................
M. pseudocoronatus
Pilato
et al.,
2006
8(6). Areolae around the bases of egg processes absent, egg processes smooth, in the shape of spines with a wide base and a sharp apex, processes smooth, 22–23 processes on the egg circumference.......................
M. contii
Pilato & Lisi, 2006
-. Areolae around the bases of egg processes present, egg processes in the shape of cones with a blunt apex, processes reticulated, 10–12 processes on the egg circumference....................................
M. pseudonuragicus
Pilato
et al.,
2004
9(1). Spurs on claws present.......................................................
M. armatus
Pilato & Binda, 1996
-. Spurs on claws absent................................................................................. 10
10(9). Egg processes situated very close (in contact) one to another.................
Macrobiotus neuquensis
Rossi
et al.,
2009
-. Spaces between egg processes present.................................................................... 11
11(10). Areolation on eggs present............................................................................. 12
-. Areolation on eggs absent.............................................................................. 19
12(11). Each process inside a single areola......................................................
M. mauccii
Pilato, 1974
-. A number of areolae present around each process........................................................... 13
13(12). Egg areolation poorly visible (areolae with thin walls), sometimes not fully developed, processes with a blunt apex...... 14
-. Egg areolation fully developed and well visible, processes with a sharp or indented apex............................ 15
14(13). Eyes present, bubble-like structures at the top of processes absent, egg processes in the shape of cones, egg shell covered by delicate stripes........................................................
M. harmsworthi obscurus
Dastych, 1985
-. Eyes absent, bubble-like structures at the top of processes present, egg processes in the shape of a bells (domes), egg shell cov- ered by delicate dots..............................................................
M. peterseni
Maucci, 1991
15(13). Body red, the oral cavity armature of the
echinogenitus
-
type
, lunules IV not thickened and without indentations, a crown of dots around the bases of processes present....................................
M. ovostriatus
Pilato & Patanè, 1998
-. Body transparent, the oral cavity armature of the
harmsworthi
-
type
, lunules IV thickened or with indentations, a crown of dots around the bases of processes absent..................................................................... 16
16(15). Sixteen areolae around the base of each egg process.............................
M. pseudoliviae
Pilato & Binda, 1996
-. Six areolae around the base of each egg process........................................................... 17
17(16). Process top divided into a number of points, more than 13 processes on the egg circumference...............................................................................................
M. nuragicus
Pilato & Sperlinga, 1975
-. Process top with 1–2 points, less than 13 processes on the egg circumference..................................... 18
18(17). Eyes and granulation on legs I present, lunules IV thickened,
pt
of stylet supports less than
76%
, egg processes without a flex- ible upper portion........................................................
M. hieronimi
Pilato & Claxton, 1988
-. Eyes and granulation on legs I absent, lunules IV with indentations,
pt
of stylet supports more than
77%
, egg processes with a flexible upper portion......................................................
M. barbarae
Kaczmarek
et al.,
2007
19(11). Egg processes hemispherical............................................................................ 20
-. Egg processes conical................................................................................. 21
20(19). Egg shell with reticular sculpture....................................................
M. montanus
Murray, 1910
-. Egg shell without reticular sculpture...............................................
M. mottai
Binda & Pilato, 1994
21(19). A well visible crown of swellings, dots or stripes around the bases of egg processes present......................... 22
-. A crown of swellings, dots or stripes around the bases of egg processes absent.................................... 28
22(21). Egg processes smooth.......................................................
M. australis
Pilato & D'Urso, 1976
-. Egg processes reticulated or with small round bubbles....................................................... 23
23(22). A crown around the bases of egg processes composed of rectangular swellings, processes in the shape of spines with a wide base, more than 25 processes on the egg circumference..........................................
M. binieki
sp. nov.
-. A crown around the bases of egg processes composed of dots or stripes, processes in the shape of low cones, less than 20 pro- cesses on the egg circumference........................................................................ 24
24(23). A crown around the bases of egg processes composed of radiate stripes forming a larger radiate crown, processes with a blunt, indented apex..................................................................
M. radiatus
Pilato
et al.,
1991
-. A crown around the bases of egg processes composed of dots, processes with a sharp apex.......................... 25
25(24). Weakly visible granulation present only on legs IV, terminal portion of egg processes not flexible...................................................................................................
M. rigidus
Pilato & Lisi, 2006
-. Evident granulation present on legs I–IV, terminal portion of egg processes flexible................................ 26
26(25). Eyes absent...................................................................
M. patiens
Pilato
et al.,
2000