Six mygalomorphs of the family Idiopidae and Theraphosidae are dealt with. The taxa, Heligmomerus Simon, H. barkudensis (Gravely, 1921), H. garoensis (Tikader, 1977) comb. nov. and Chilobrachys khasiensis (Tikader, 1977) are reported for the first time from the state of West Bengal and Chilobrachys stridulans (Wood Mason, 1877) from Arunachal Pradesh. All these rare and poorly known mygalomorphs are diagnosed and illustrated in the interest of Indian Arachnology.
The genus Oligoxystre
was originally established in 1924 for O. auratum
Vellard 1924 from southern state of Goia´s, Central Brazil. Today, the genus includes seven species: O. auratum
, O. caatinga
Guadanucci 2007, O. bolivianum
(Vol 2001), O. tucuruiense
Guadanucci 2007, O. rufoniger
Guadanucci 2007, O. dominguense
Guadanucci 2007, and O. diamantinensis
Bertani et al. 2009. Oligoxystre mineirum
new species, from the Atlantic forest domain is described here. The cladistic analysis resulted in a single tree: (O.caatinga
))))). According to the area cladogram obtained, it is possible to draw the following conclusions: the origin of the Cerrado fauna is monophyletic; the occurrence of two sympatric species in Caatinga is due to different events; and the diversity of
Oligoxystre in Serra do Espinhac¸o (O. rufoniger
, O. diamantinensis
and O. mineirum
) is probably the result of the contact of the typical fauna of each bioma (Cerrado, Caatinga and Atlantic Forest).
We revalidate the theraphosid genus Pterinopelma Pocock 1901, describe the female of P. vitiosum for first time and Pterinopelma
sazimai sp. nov. from Brazil. These two species were included in a matrix with 35 characters and 32 taxa and
were analyzed both with all characters having same weight and with implied weights. Searches considering all characters
non-additive or some additive were also carried out. The preferred tree, obtained with implied weights, concavity 6 and
all characters non-additive shows that Pterinopelma is a monophyletic genus sister to the clade Lasiodora (Vitalius +
Nhandu). The presence of denticles on the prolateral inferior male palpal bulb keel is a synapomorphy of the genus.
A new species of Hapalopus Ausserer, 1875 is described from Guyana. This species represents the first record of the genus from Guyana and brings the total number of theraphosid spider species recorded from Guyana to eleven.
A new species of the genus Bonnetina Vol, 2000, based on differences bulb palpate male is described spermathecae female, number of teeth and the ratio quelíceros the legs in the male. Further proposed taxonomic guide for the four known species of far.
We describe and ﬁgure a new species of the genus
Schismatothele Karsch, 1879 from Brazil, Amazonas state,to the north of Manaus. This species comprises the ﬁrstmale known for the genus and the ﬁrst report of the genus
Schismatothele for Brazil. The new species diﬀers from theonly known species,
Schismatothele lineata Karsch, 1879 inthe morphology of the spermathecae in which the dorsalreceptacles have internal tubular digitiform lobules.
The taxonomic status of four species of Avicularia Lamarck 1818 described from Uruguay: Avicularia anthracina (C.L. Koch 1842), Avicularia alticeps (Keyserling 1878), Avicularia parva (Keyserling 1878) and Avicularia tigrina (Pocock 1903) is discussed. The holotypes and/or original descriptions of these species were examined, and two taxonomic synonymies are needed, which are presented herein. Avicularia anthracina is transferred to Grammostola, resulting in Grammostola anthracina (C.L. Koch 1842) new combination and is considered a senior synonym of
Grammostola mollicoma Ausserer 1875 new synonymy. Likewise, Avicularia parva is transferred to Catumiri Guadanucci 2004, where it is placed in the synonymy of Catumiri uruguayense Guadanucci 2004 new synonymy. Avicularia tigrina and Avicularia alticeps, originally described in the genera Ischnocolus Ausserer 1875 and Pterinopelma Pocock 1901, respectively, are herein considered nomina dubia since their types are presumed lost.
Thrixopelma lagunas sp. n. is the
fourth species of the genus distributed
in Peru. It is characterized by
a prolonged embolus in the male
(fig.4-5) and very simple receptacula
seminis in the female (fig.
9). The scopula of metatarsus III
extends over a third of the segment
only. In T. pruriens Schmidt,
1998 it covers 2/3, in T. cyaneolum
Schmidt, Friebolin & Friebolin,
2005 and in T. ockerti Schmidt,
1994, 1/2 of the metatarsus III. It
differs by its dark brown colour
from T. cyaneolum which shows
a cyan brightness of carapace and
extremities and from T. ockerti by
its spermathecae which are pointed-
caplike. The new species is
closely related to T. pruriens also
distri-buted in Peru.
Chilocosmia barenst9ineraels a new species of the genus and the first species
of this genus from Kalimantan. hi adult female could be c:cllected In the
South of Kalimantan, the Indonesian part of Borneo. It moulted on 20"
August 2009. The male of this species is unknown.
The exuvia has been studied by SCHMIDT who dissected the stridulation
bristles and the sperrnathecae. The new species differs from all other spa...
des of the genus by two additional rows of paddle and peglike strXluialing
setae on the maxillae, one medium-sized and one very small. The differ·
ences to C. p6erbooml SCHMIDT. 1999 from the island of Negros (Philippines)
are besides two additional rows of paddle and peglike setae on maxillae,
scopula of metatarsus IV the base of the segment not reaching, Tibia IV
not thickened, distance ALE-PLE considerably larger, unpaired third claw
absent, three pairs of sternal slgillae. hair red brown . Colour after moulting
deep black. The biotope Is the tropical rain forest. whictt is very humid during
the monsoon time. Ch//ocosmia SCHMIDT & VON WIRTH, 1992, in 2000
synonymized with Sel9nocosmia by RAVEN is a genus of its own and quite
different from Selenocosmia AUSSERER,1871 .
-Selenocosmia bom908nsis- nomen nudum (non vidimus) is probably an
The tarantula genus Lyrognathus Pocock 1895 is revised with three new species described: L. achilles sp. nov. from Gunung Nibung, Borneo; L. fuscus sp. nov. from Simpang Kubur, Borneo and L. lessunda sp. nov. from Lombok Island, Indonesia. The male of L. robustus Smith 1988 is described for the first time, the female is redescribed. L. crotalus
Pocock 1895 is considered a senior synonym of L. pugnax Pocock 1900. Several new characters are discussed, with Lyrognathus keyed to species. The diagnosis of the Selenocosmiinae is amended. Zoogeographic distribution, natural
history and subfamilial relationships with proposed sister genera Selenocosmia Ausserer 1871 and Coremiocnemis Simon 1892 are discussed. Lyrognathus saltator is redescribed. Selenocosmia lyra Strand 1913 is considered a nomen dubium.
Cyriocosmus venezuelensis sp. nov. from Venezuela, State of Lara and Carabobo,
is described, diagnosed and keyed. The new species can be distinguished from
all other congeners by its uniformly coloured carapace, dark ventral band on the
abdomen and by the paraembolic apophysis in male palpal bulb being half the
length of the embolus. Cyriocosmus rogerioi Pérez-Miles & Weinmann, 2009 is
placed in the synonymy of Cyriocosmus pribiki Pérez-Miles & Weinmann, 2009, from which
it does not differ in any characters of specific significance.
The selenocosmiine genus Coremiocnemis
Simon 1892 is revised for the first time with six new species included. Five new species are from West Malaysia: C. brachyramosa
sp. nov. from Gunung Ledang, Johor; C. gnathospina
sp. nov. and C. hoggi
sp. nov. from Fraser’s Hill, Selangor; C. jeremyhuffi
sp. nov. from Tapah, Perak, Fraser’s Hill, Selangor to Pahang and C. obscura
sp. nov. from Taiping, Perak to Cameron Highlands, Pahang. C. kotacana
sp. nov. is described from Aceh Teneggara, Sumatra, being the first record of this genus outside Malaysia or Australia. A lectotype and paralectotype
are designated for C. cunicularia
(Simon 1892). All but two of Abraham’s non-type C. valida
Pocock 1895 (Abraham 1924) specimens held in both the NHM and RMBR are newly transferred to C. cunicularia
. Abraham’s two remaining specimens are removed from Coremiocnemis
. C. valida
is redescribed, its former dubious locality is resolved. Zoogeographic considerations of all species are discussed and resolved. Ontogenetic variation within Coremiocnemis
is discussed. Several new characters are introduced. Subfamilial relationships with proposed sister genera Selenocosmia
Ausserer 1871 and Lyrognathus
Pocock 1895 are discussed. A key to species is provided.
In this study Hemirrhagus perezmilesi sp. nov., is described. The males of this species differ from other of the genus in the absence of tibial spurs. This is the first record of Hemirrhagus in Chiapas Mexico apart from fossil records found in amber.
Acanthoscurria turumban sp. nov. (Araneae: Theraphosidae) is described based on a male from State Bolivar, Venezuela.
The new species resembles Acanthoscurria antillensis Pocock, 1903 and A. maga Simon, 1892 but can be distinguished
by morphology of the male palpal organ and tibia I apophysis. The genus is recorded for the first time for Venezuela.
The new genus Agnostopelma Pe´rez-Miles & Weinmann is proposed for the type species A. tota n. sp. and A.
gardel n. sp. from Boyaca´, Colombia. Agnostopelma build shelters under stones at high elevation. The new genus is unusual
in lacking tarsal scopulae on its posterior legs and in having few labial cuspules and short leg tarsi in females.
A new species of Hapalopus Ausserer, 1875 (Araneae, Theraphosidae, Theraphosinae) from Bolivia is described and illustrated, based in males and females
Two new species of Cyriocosmus (Theraphosinae) from Perú are described
and illustrated. Both differ from most other species of Cyriocosmus in the absence
of a stripped pattern on the abdomen and males with the retrolateral
branch of tibial apophysis distally incrassate and flattened. The cladistic relationships within the genus are reanalyzed including these new taxa. Specimens
of the new species were collected at altitudes of between 2200 and 3000 m,
these records constituting the highest altitudinal record for the genus.
Avicularia diversipes (C.L. Koch 1842) known previously only from its original description is redescribed along with Avicularia sooretama sp. nov. and Avicularia gamba sp. nov. The three species are endemic to Brazilian Atlantic rainforest. With other Avicularia species, they share a procurved anterior eye row, slender embolus and medially folded spermathecae, whereas they have unusual characters, such as a very long and spiraled embolus (A. diversipes) and spermathecae with multilobular apex (A. sooretama sp. nov.). Furthermore, the three species lack a tibial apophysis in
males and share a distinctive color pattern ontogeny that is not known in any other Avicularia species. The conservation status of the three species is discussed, especially with respect to endemism, illegal trafficking and habitat destruction.
The creation of protected areas in southern State of Bahia, Brazil, is recommended, as well as the inclusion of these species in IUCN and CITES lists. Appendices with figures and species information are presented to facilitate correct specimen identification by custom officers, in order to limit illegal traffic.
A new species of Oligoxystre, Oligoxystre diamantinensis n. sp., is described from Brazil. Male can be distinguished from all other Oligoxystre species by the male palpal bulb lacking a small subapical keel on the embolus in conjunction with the embolus length (less than 2.5 times the tegulum length) and by the tibial spur being inserted in a perpendicular angle in relation to the tibia axis. Female can be distinguished by the spermathecae being much more longer than wide, lacking lateral lobes anda large terminal lobe with five smaller lobes around it. Additionally, males and females can be distinguished by the general blue metallic color pattern contrasting with the reddish setae on the abdomen. A key for all described Oligoxystre species is presented. The cladistic relationship of O. diamantinensis sp. n. with the other Oligoxystre species is discussed and data on its habitat is provided.
The two Indian Ischnolocus species, I. decoratus and I. khasiensis are transferred to the genus Chilobrachys Karsch, 1891 based on presence and pattern of stridulatory setae on maxillae and chelicerae. Further, Ischnocolus decoratus is synonymised with Chilobrachys fimbriatus Pocock, 1899.
The original description of this species was based on a single female and no illustrations of reproductive organs were presented. After we collected several specimens identified as I. seladonium, we decided to redescribe this species and discovered that the male, previously described as belonging to this species, was misidentified by MELLO LEITÃO (1923). Thus, in this paper the male of I. seladonium is newly described and the reproductive organs of male and female are described and illustrated in detail. Notes on the behavior and natural history of I. seladonium are presented based on the observation of live specimens in the field and in captivity. An immature of I. seladonium was observed constructing a hinged retreat with silk and little pieces of bark, a behavior not previously seen for other Aviculariinae. Two courtship events were observed and photographed, leg tapping and palpal drumming of the male on female's body and dorsum-ventral movements of the female's abdomen while the male was inserting the embolus were documented to Aviculariinae for the first time. The courtships and mating lasted almost two minutes.