A revision of the Thyropygus allevatus group. Part 1: the T. opinatus subgroup (Diplopoda: Spirostreptida: Harpagophoridae)
Author
Pimvichai, Piyatida
Author
Enghoff, Henrik
Author
Panha, Somsak
text
Zootaxa
2009
2016
17
50
journal article
10.5281/zenodo.185971
1db39382-b4f0-46fa-ae08-dd5e57e0e26b
1175-5326
185971
Key to species of the
T
.
opinatus
subgroup
1 Spatulate lobe (
sl
) distally drawn out into one (rarely two) sharp dark brown spine(s).............................................. 2
1* Spatulate lobe (
sl
) distally expanded and/or rounded, spoonlike, without a spine ...................................................... 6
2 Spatulate lobe (
sl
) terminating in two sharp brown spines, the outer spine slightly smaller and shorter than the inner one; lateral process of anterior coxal fold (
alp
) slender, slightly curving mesad; mesal process of anterior coxal fold (
amp
) almost as long as
alp
, flattened
........................................................................
Thyropygus bispinispatula
n. sp.
2* Spatulate lobe (
sl
) terminating in a single sharp dark brown spine .............................................................................. 3
3 Telopodite distally to
fe
with a large, round lobe (
lo
) projecting distolaterally............................................................ 4
3* Telopodite without a lobe distal to
fe
; lateral process of anterior coxal fold (
alp
) long, slender, regularly curved, tip
close to tip of opposite
alp
, the two together forming a circle; mesal process of anterior coxal fold (
amp
) straight, shorter than
alp
; femoral spine (
fe
) directed distad, pointed
..................................................
Thyropygus erectus
n. sp.
4 Lateral process of anterior coxal fold (
alp
) very slender, regularly curved, simple, tip close to tip of the opposite side, the two together forming a circle; mesal process of posterior coxal fold (
pmp
): strongly developed along anterior-posterior axis
................................................................................
Thyropygus floweri
(
Demange, 1961
)
n. comb.
4* Lateral process of anterior coxal fold (
alp
) different, broader and/or with several apical denticles ........................... 5
5 Lateral process of anterior coxal fold (
alp
) broad, apically gradually narrowed; mesal process of anterior coxal fold (
amp
) almost as long as lateral process (
alp
), slender, straight, terminally slightly curved, pointed .............................
..............................................................................................................
Thyropygus opinatus
(
Karsch, 1881
)
n. comb.
5* Lateral process of anterior coxal fold (
alp
) apically bent abruptly mesad, tip with serrate margins; mesal process of anterior coxal fold (
amp
) much shorter than lateral process (
alp
), directed meso-distad, simple, pointed; mesal process of posterior coxal fold (
pmp
): strongly developed along anterior-posterior axis....................................................
.......................................................................................................
Thyropygus implicatus
(
Demange, 1961
)
n. comb.
6 Lateral process of anterior coxal fold (
alp
) broad, mesal margin concave, tip with serrate margins, cockscomb-like; mesal process of anterior coxal fold (
amp
) much shorter than lateral process (
alp
), directed meso-distad, simple, pointed; an additional spine-like process (
aip
) between
alp
and
amp .............................
Thyropygus cristagalli
n. sp.
6* Lateral process of anterior coxal fold (
alp
) slender, regularly curved, no additional process between lateral (
alp
) and mesal (
amp
) ones ......................................................................................................................................................... 7
7 Lateral process of anterior coxal fold (
alp
) apically abruptly truncate
....................................
Thyropygus bearti
n. sp.
7* Lateral process of anterior coxal fold (
alp
) apically pointed........................................................................................ 8
8 Mesal process of anterior coxal fold (
amp
) very small, telopodite distally to
fe
with a small round lobe (
lo
) projecting distolaterally
........................................................................................................................
Thyropygus loxia
n. sp.
8* Mesal process of anterior coxal fold (
amp
) relatively long.......................................................................................... 9
9 Mesal process of anterior coxal fold (
amp
) much shorter than lateral process (
alp
), directed obliquely disto-mesad, slender, straight.
...................................................................................................................
Thyropygus chelatus
n. sp.
9* Mesal process of anterior coxal fold (
amp
) directed distad, thicker, straight or slightly sigmoid ............................. 10
10 Mesal process of anterior coxal fold (
amp
) almost as long as lateral process (
alp
), slightly sigmoid, pointed; mesal process of posterior coxal fold (
pmp
) directed distolaterad
.....................................
Thyropygus brachyacanthus
n. sp.
10* Mesal process of anterior coxal fold (
amp
) longer than lateral process (
alp
), directed distad, parallel with opposite process......................................................................................................................................................................... 11
11 Lateral process of anterior coxal fold (
alp
) apically with a crest extending caudad and ending in a small spine; mesal process of anterior coxal fold (
amp
) apically irregularly tuberculate; telopodite distally without a rounded lobe (
lo
); femoral spine (
fe
) short; spatulate lobe (
sl
) distally rounded, with smooth edges..........................................................
...........................................................................................................
Thyropygus inflexus
(
Demange, 1989
)
n. comb.
11* Lateral process of anterior coxal fold (
alp
) apically without a crest; mesal process of anterior coxal fold (
amp
) apically sharp; telopodite distally with a rounded lobe (
lo
); femoral spine (
fe
) long; margins of spatulate lobe (
sl
) terminally meeting in a distinct angle
..........................................................................................
Thyropygus bispinus
n. sp.