A revision of dragon millipedes III: the new genus Gigaxytes gen. nov., with the description of three new species (Diplopoda, Polydesmida, Paradoxosomatidae)
Author
Srisonchai, Ruttapon
4C9CB546-0A3E-4F0B-A9AB-618A6E9C2D6B
Biological Sciences Program, Faculty of Science, Chulalongkorn University, Phaya Thai Road, Patumwan, Bangkok 10330, Thailand. & Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand.
ruttapon60104@yahoo.com
Author
Enghoff, Henrik
9B9D901F-D6C8-4BCA-B11B-CF6EE85B16DC
Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK- 2100 København Ø, Denmark.
somsak.pan@chula.ac.th
Author
Likhitrakarn, Natdanai
46C52EE1-A383-4C86-BF97-39E07C195075
Division of Plant Protection, Faculty of Agricultural Production, Maejo University, San Sai, Chiang Mai 50290, Thailand. & Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand.
kongerrrr@hotmail.com
Author
Panha, Somsak
AC935098-D901-4F35-A414-4B0D4FE44E79
Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand.
henghoff@snm.ku.dk&somsak.pan@chula.ac.th
text
European Journal of Taxonomy
2018
2018-09-27
463
1
43
journal article
10.5852/ejt.2018.463
6c71c062-4867-4d9d-a267-871140b8dd35
2118-9773
1467258
0A1234C2-BE04-4EFE-9EB7-8F91E8485327
Key to species of
Gigaxytes
gen. nov.
(based mainly on males)
1. Male femora 5, 6, 7 without modification (
Fig. 10
E–F) ..................................................................... .................................................................
G. gigas
(
Golovatch & Enghoff, 1994
)
gen. et comb. nov.
– Male femora 5, 6 or 5, 6, 7 with an apophysis (e.g.,
Fig. 15
E–G) ................................................... 2
2. Body brown. Only male femora 5 and 6 with apophyses (
Fig. 5
E–F); solenophore narrow laterally (e.g.,
Figs 7
C–D, 8C, E) ...............................
G. fusca
Srisonchai, Enghoff & Panha
gen. et sp. nov.
– Body pinkish brown or brownish pink. Male femora 5, 6 and 7 with apophyses (
Figs 15
E–G, 20E–G); solenophore (sph) broad laterally (e.g.,
Figs 17C
,
18C
,
22C
,
23C
) ........................................... 3
Fig. 5.
Gigaxytes fusca
Srisonchai, Enghoff & Panha
gen. et sp. nov.
, ³ paratype.
A
. Anterior body part.
B
. Body rings 8–10.
C
. Posteriormost body rings and telson.
D
. Head and antenna.
E
.
♂
leg 5 (right).
F
.
♂
leg 6 (right).
G
.
♂
leg 13 (right).
H
. Midbody ring.
3. Paraterga short (
Fig. 16
A–B); collum usually with 3+3 cones/spines (intermediate row) (
Fig. 15A
); metaterga 2–8 usually with 4+4 cones/spines (anterior row), 3+3 cones/ spines (intermediate row) and 3+3 cones/spines (posterior row); metaterga 9–19 usually with 5+5 cones/spines (anterior row), 5+5 cones/spines (intermediate row) and 5+5 cones/spines (posterior row) (
Fig. 15
A–C) .........................................................
G. parvoterga
Srisonchai, Enghoff & Panha
gen. et sp. nov.
– Paraterga long (
Fig. 21
A–B); collum usually with 4+4 cones/spines (intermediate row) (
Fig. 20A
); metaterga 2–8 usually with 4+4 cones/spines (anterior row), 4+4 cones/ spines (intermediate row) and 4+4 cones/spines (posterior row); metaterga 9–12 usually with 5+5 cones/spines (anterior row), 5+5 cones/spines (intermediate row) and 5+5 cones/spines (posterior row); metaterga 13–19 usually with 6+6 cones/spines (anterior row), 6+6 cones/ spines (intermediate row) and 6+6 cones/spines (posterior row) (
Fig. 20
A–C) ................
G. suratensis
Srisonchai, Enghoff & Panha
gen. et sp. nov.