Sexing...tibial hooks not always indicator of males?

[edesign]

I was browsing through some of my bookmarks when i came across this link.

Everything I've read on this forum has said that tibial hooks are indicators that the specimen is male, but according to that article this is not the case. I have practically no experience in this area so was curious what everyone else's takes were on this.

 

[8 leg wonder]

not all species have hooks when mature, but they do all have bulbed pedipalps

 

[David Burns]

I've read it many times and just did again. I did not see anything to indicate that a non-mature T could have tibial hooks. Some mature males don't have or get hooks but if a T has them he is mature.

 

[becca81]

Some species don't have tibial hooks, so they alone can not used to indicate male or female.

However, the presence of tibial hooks does, in fact, guarantee that the tarantula is a mature male. It will also possess the modified palps (which are also another guarantee).

That link is discussing ventral sexing, which can be done before the spider is mature.

Pretty much, modified palps = mature male, regardless of tibial hooks.

 

[M.F.Bagaturov]

You see it is not unnusual for many tarantulas to not have a tibial spurs (hooks). There're a lot of them (genera and species) listed...
You can find the up to date list here http://tarantulas.tropica.ru/english/index2.php?link=internal.html under the "Reproductive system" section...
Hope this helps...

 

[edesign]

thanks everyone

 

[Irma]

Can you guys please tell what species don't get the hooks

 

[SpookySpooder]

Can you guys please tell what species don't get the hooks

Use the search button next time.

Genus Annandaliella:
pectinifera
travencorica
Genus Anoploscelus:
celeripes
lesserti
Genus Augacephalus:
junodi
Genus Chilobrachys:
andersoni
annandalei
assamensis
bicolor
brevipes
dyscolus
femoralis
fimbriatus
flavopilosus
fumosus
hardwicki
huahini
hubei
jingzhao
nitelinus
oculatus
paviei
pococki
sericeus
soricinus
stridulans
thorelli
tschankoensis
Genus Citharischius:
crawshayi
stridulantissimus
Genus Coremiocnemis:
cunicularia
tropix
valida
Genus Encyocratella:
olivacea
Genus Euphrictus:
spinosus
squamosus
Genus Heteroscodra:
crassipes
crassipes latithorax
maculata
pachypoda
Genus Heterothele:
affinis
atropha
caudicula
darcheni
decemnotata
gabonensis
honesta
hullwilliamsi
ogbunikia
spinipes
villosella
Genus Hysterocrates:
affinis
affinis angusticeps
apostolicus
crassipes
didymus
ederi
gigas
greeffi
greshoffi
haasi
hercules
laticeps
maximus
ochraceus
robustus
robustus sulcifer
scepticus
sjostedti
spellenbergi
vosseleri
weileri
Genus schnocolus:
algericus
andalusiacus
decoratus
fasciculatus
fuscostriatus
hancocki
holosericeus
jerusalemensis
jickelii
khasiensis
maroccanus
mogadorensis
numidus
rubropilosus
syriacus
tomentosus
triangulifer
tripolitanus
tunetanus
valentinus
Genus Lyrognathus:
crotalus
pugnax
robustus
saltator
Genus Metriopelma:
breyeri
coloratum
drymusetes
familiare
ledezmae
spinolosum
variegata
velox
zebratum
Genus Nhandu:
carapoensis
Genus Orphnaecus:
pellitus
Genus Pachistopelma (they do possess a shield of spines):
concolor
rufonigrim
Genus Phlogiellus:
aper
atriceps
baeri
bicolor
brevipes
inermis
insularis
nebulosus
ornatus
subarmatus
subinermis
Genus Phoneyusa:
antilope
belandana
bettoni
bidentata
bidentata ituriensis
bouvieri
buettneri
celerierae
chevalieri
cultridens
efuliensis
elephantiasis
gabonica
giltayi
gracilipes
gregori
lesserti
manicata
minima
mutica
nigroventris
principium
rufa
rutilata
westi
Genus Phormingochilus:
everetti
fuchsi
tigrinus
Genus Plesiophrictus:
Some males such as blatteri and madraspatanus have spurs - it is unknown which species do not possess spurs.
Genus Poecilotheria:
fasciata
formosa
hanumavilasumica
metallica
miranda
ornata
pederseni
pococki
regalis
rufilata
smithi
striata
subfusca
uniformis
Genus Selenocosmia:
arndsti
aruana
compta
crassipes
deliana
dichromata
effera
fuliginea
hasselti
hirtipes
honesta
imbellis
insignis
insulana
javanensis
javanensis brachyplectra
javanensis dolichoplectra
javanensis fulva
javanensis sumatrana
kovariki
kulluensis
lanceolata
lanipes
lyra
mittmannae
obscura
orophila
papuana
peerboomi
pritami
raciborskii
samarae
similis
stirlingi
strenua
strubelli
subvulpina
sutherlandi
tahanensis
valida
Genus Selenotholus:
foelschei
Genus Selenotypus:
plumipes
Genus Sericopelma:
commune
dota
fallax
ferrugineum
generala
immensum
melanotarsum
rubronitens
silvicola
striatum
upala
Genus Stromatopelma:
batesi
calceatum
calceatum griseipes
fumigatum
satanus
Genus Theraphosa:
blondi
Genus Thrigmopoeus:
insignis
truculentus

Please Note:
Original Genus List - Journal of the British Tarantula Society – ISSN 0962-449X May 2005, Vol. 20 No. 3 page 81 - A listing of male theraphosids which lack tibial apophyses by L.K. Ross and R.C. West

 

[Arachnophobphile]

Can you guys please tell what species don't get the hooks

Always look for the weiner fingers to know when your male tarantula matures.

 

[Irma]

Use the search button next time.

Genus Annandaliella:
pectinifera
travencorica
Genus Anoploscelus:
celeripes
lesserti
Genus Augacephalus:
junodi
Genus Chilobrachys:
andersoni
annandalei
assamensis
bicolor
brevipes
dyscolus
femoralis
fimbriatus
flavopilosus
fumosus
hardwicki
huahini
hubei
jingzhao
nitelinus
oculatus
paviei
pococki
sericeus
soricinus
stridulans
thorelli
tschankoensis
Genus Citharischius:
crawshayi
stridulantissimus
Genus Coremiocnemis:
cunicularia
tropix
valida
Genus Encyocratella:
olivacea
Genus Euphrictus:
spinosus
squamosus
Genus Heteroscodra:
crassipes
crassipes latithorax
maculata
pachypoda
Genus Heterothele:
affinis
atropha
caudicula
darcheni
decemnotata
gabonensis
honesta
hullwilliamsi
ogbunikia
spinipes
villosella
Genus Hysterocrates:
affinis
affinis angusticeps
apostolicus
crassipes
didymus
ederi
gigas
greeffi
greshoffi
haasi
hercules
laticeps
maximus
ochraceus
robustus
robustus sulcifer
scepticus
sjostedti
spellenbergi
vosseleri
weileri
Genus schnocolus:
algericus
andalusiacus
decoratus
fasciculatus
fuscostriatus
hancocki
holosericeus
jerusalemensis
jickelii
khasiensis
maroccanus
mogadorensis
numidus
rubropilosus
syriacus
tomentosus
triangulifer
tripolitanus
tunetanus
valentinus
Genus Lyrognathus:
crotalus
pugnax
robustus
saltator
Genus Metriopelma:
breyeri
coloratum
drymusetes
familiare
ledezmae
spinolosum
variegata
velox
zebratum
Genus Nhandu:
carapoensis
Genus Orphnaecus:
pellitus
Genus Pachistopelma (they do possess a shield of spines):
concolor
rufonigrim
Genus Phlogiellus:
aper
atriceps
baeri
bicolor
brevipes
inermis
insularis
nebulosus
ornatus
subarmatus
subinermis
Genus Phoneyusa:
antilope
belandana
bettoni
bidentata
bidentata ituriensis
bouvieri
buettneri
celerierae
chevalieri
cultridens
efuliensis
elephantiasis
gabonica
giltayi
gracilipes
gregori
lesserti
manicata
minima
mutica
nigroventris
principium
rufa
rutilata
westi
Genus Phormingochilus:
everetti
fuchsi
tigrinus
Genus Plesiophrictus:
Some males such as blatteri and madraspatanus have spurs - it is unknown which species do not possess spurs.
Genus Poecilotheria:
fasciata
formosa
hanumavilasumica
metallica
miranda
ornata
pederseni
pococki
regalis
rufilata
smithi
striata
subfusca
uniformis
Genus Selenocosmia:
arndsti
aruana
compta
crassipes
deliana
dichromata
effera
fuliginea
hasselti
hirtipes
honesta
imbellis
insignis
insulana
javanensis
javanensis brachyplectra
javanensis dolichoplectra
javanensis fulva
javanensis sumatrana
kovariki
kulluensis
lanceolata
lanipes
lyra
mittmannae
obscura
orophila
papuana
peerboomi
pritami
raciborskii
samarae
similis
stirlingi
strenua
strubelli
subvulpina
sutherlandi
tahanensis
valida
Genus Selenotholus:
foelschei
Genus Selenotypus:
plumipes
Genus Sericopelma:
commune
dota
fallax
ferrugineum
generala
immensum
melanotarsum
rubronitens
silvicola
striatum
upala
Genus Stromatopelma:
batesi
calceatum
calceatum griseipes
fumigatum
satanus
Genus Theraphosa:
blondi
Genus Thrigmopoeus:
insignis
truculentus

Please Note:
Original Genus List - Journal of the British Tarantula Society – ISSN 0962-449X May 2005, Vol. 20 No. 3 page 81 - A listing of male theraphosids which lack tibial apophyses by L.K. Ross and R.C. West

Use the search button next time.

Genus Annandaliella:
pectinifera
travencorica
Genus Anoploscelus:
celeripes
lesserti
Genus Augacephalus:
junodi
Genus Chilobrachys:
andersoni
annandalei
assamensis
bicolor
brevipes
dyscolus
femoralis
fimbriatus
flavopilosus
fumosus
hardwicki
huahini
hubei
jingzhao
nitelinus
oculatus
paviei
pococki
sericeus
soricinus
stridulans
thorelli
tschankoensis
Genus Citharischius:
crawshayi
stridulantissimus
Genus Coremiocnemis:
cunicularia
tropix
valida
Genus Encyocratella:
olivacea
Genus Euphrictus:
spinosus
squamosus
Genus Heteroscodra:
crassipes
crassipes latithorax
maculata
pachypoda
Genus Heterothele:
affinis
atropha
caudicula
darcheni
decemnotata
gabonensis
honesta
hullwilliamsi
ogbunikia
spinipes
villosella
Genus Hysterocrates:
affinis
affinis angusticeps
apostolicus
crassipes
didymus
ederi
gigas
greeffi
greshoffi
haasi
hercules
laticeps
maximus
ochraceus
robustus
robustus sulcifer
scepticus
sjostedti
spellenbergi
vosseleri
weileri
Genus schnocolus:
algericus
andalusiacus
decoratus
fasciculatus
fuscostriatus
hancocki
holosericeus
jerusalemensis
jickelii
khasiensis
maroccanus
mogadorensis
numidus
rubropilosus
syriacus
tomentosus
triangulifer
tripolitanus
tunetanus
valentinus
Genus Lyrognathus:
crotalus
pugnax
robustus
saltator
Genus Metriopelma:
breyeri
coloratum
drymusetes
familiare
ledezmae
spinolosum
variegata
velox
zebratum
Genus Nhandu:
carapoensis
Genus Orphnaecus:
pellitus
Genus Pachistopelma (they do possess a shield of spines):
concolor
rufonigrim
Genus Phlogiellus:
aper
atriceps
baeri
bicolor
brevipes
inermis
insularis
nebulosus
ornatus
subarmatus
subinermis
Genus Phoneyusa:
antilope
belandana
bettoni
bidentata
bidentata ituriensis
bouvieri
buettneri
celerierae
chevalieri
cultridens
efuliensis
elephantiasis
gabonica
giltayi
gracilipes
gregori
lesserti
manicata
minima
mutica
nigroventris
principium
rufa
rutilata
westi
Genus Phormingochilus:
everetti
fuchsi
tigrinus
Genus Plesiophrictus:
Some males such as blatteri and madraspatanus have spurs - it is unknown which species do not possess spurs.
Genus Poecilotheria:
fasciata
formosa
hanumavilasumica
metallica
miranda
ornata
pederseni
pococki
regalis
rufilata
smithi
striata
subfusca
uniformis
Genus Selenocosmia:
arndsti
aruana
compta
crassipes
deliana
dichromata
effera
fuliginea
hasselti
hirtipes
honesta
imbellis
insignis
insulana
javanensis
javanensis brachyplectra
javanensis dolichoplectra
javanensis fulva
javanensis sumatrana
kovariki
kulluensis
lanceolata
lanipes
lyra
mittmannae
obscura
orophila
papuana
peerboomi
pritami
raciborskii
samarae
similis
stirlingi
strenua
strubelli
subvulpina
sutherlandi
tahanensis
valida
Genus Selenotholus:
foelschei
Genus Selenotypus:
plumipes
Genus Sericopelma:
commune
dota
fallax
ferrugineum
generala
immensum
melanotarsum
rubronitens
silvicola
striatum
upala
Genus Stromatopelma:
batesi
calceatum
calceatum griseipes
fumigatum
satanus
Genus Theraphosa:
blondi
Genus Thrigmopoeus:
insignis
truculentus

Please Note:
Original Genus List - Journal of the British Tarantula Society – ISSN 0962-449X May 2005, Vol. 20 No. 3 page 81 - A listing of male theraphosids which lack tibial apophyses by L.K. Ross and R.C. West

I was reffering to Spiders only but thanks

 

[Mike Withrow]

I was reffering to Spiders only but thanks

LMAO!
Er. What do you think they posted a whole entire list of?
And some chiliobracys get nubs, not hooked out,but little nubs.

 

[SpookySpooder]

Tarantulas, I posted a list of Tarantulas.

They wanted spiders... so I'll have to take this list back to the kitchen and hope the boss doesn't whip me for my mistakes

 

[Mike Withrow]

Tarantulas, I posted a list of Tarantulas.

They wanted spiders... so I'll have to take this list back to the kitchen and hope the boss doesn't whip me for my mistakes

Ahh I see. That's a shame because that is an impressive list.

 

[SpookySpooder]

Provided by experts.

Original Genus List - Journal of the British Tarantula Society – ISSN 0962-449X May 2005, Vol. 20 No. 3 page 81 - A listing of male theraphosids which lack tibial apophyses by L.K. Ross and R.C. West

After I embarrassed myself in front of cold blood for not knowing Pokies didn't have tibial hooks I had to do some reading.

 

[Arachnophobphile]

Provided by experts.

Original Genus List - Journal of the British Tarantula Society – ISSN 0962-449X May 2005, Vol. 20 No. 3 page 81 - A listing of male theraphosids which lack tibial apophyses by L.K. Ross and R.C. West

After I embarrassed myself in front of cold blooded for not knowing Pokies didn't have tibial hooks I had to do some reading.

It's always safer to say 'look for the weiner fingers not tibial hooks'

 

[SpookySpooder]

It's always safer to say 'look for the weiner fingers not tibial hooks'

Yeah I got a warning for that one...

 

[Mike Withrow]

I'm totally lost?
And why does this guy have only one set of book lungs that I can see?
Is that a dwarf species?

 

[SpookySpooder]

I'm totally lost?
And why does this guy have only one set of book lungs that I can see?
Is that a dwarf species?

It was a ventral photo where I drew wieners on the pedipalps.

Dude, you really freaked me out for a minute. I think it's just the angle on the photo, I've had this Ornithoctoninae since it was a bitty sling and its always had both sets.

Don't make me dig this sucker up and check right now

 

[Mike Withrow]

LMAO! Shew... Stomach cramps from laughing . OMG. I never caught the drawing LMAO
Omg I'm dieing!!! LMAO!!!!

 

[cold blood]

I was reffering to Spiders only but thanks

Then you are in the wrong section...this section of the forum is ENTIRELY dedicated to tarantulas...therefore the response was accurate, and your question was misplaced....please pay attention to the forums you're posting in.