Three new species and the first known males of the Andean spider genus Orinomana Strand (Araneae, Uloboridae)
Author
Grismado, Cristian J.
Author
Rubio, Gonzalo D.
text
Zootaxa
2015
4052
2
201
214
journal article
10.11646/zootaxa.4052.2.4
95feb367-11b8-4698-9700-f0a071124f00
1175-5326
234504
EC8F2B37-CD37-41C9-9845-DB06C6BC6DC7
Orinomana
Strand, 1934
Orinomus
[preoccupied] Chamberlin 1916: 206.
Type
species by original designation and monotypy
O. lamprus
Chamberlin, 1916
, op. cit.
Orinomana
Strand 1934: 273
. New name for
Orinomus
Chamberlin 1916
, preoccupied.
Opell 1979
: 498
.
Note.
The
type
species,
Orinomus lamprus
was synonymized by
Opell (1979)
with
Uloborus bituberculatus
Keyserling, 1882
.
Diagnosis.
Orinomana
species share with those of
Waitkera
Opell, 1979
,
Sybota
,
Miagrammopes
and
Hyptiotes
, the PLE on prominent tubercles; differ from
Miagrammopes
in having anterior eyes, from
Hyptiotes
in lacking the anterior cephalic narrowness (
Opell 1979, fig. 55
), and from the remaining two genera by having a peaked, humped abdomen (
Figs. 2
B;
Opell 1979
, fig. 122; Grismado 2000, figs. 2, 7) rather than oval or projecting (
Opell 1979
, figs. 24, 102, 110, 116;
Grismado 2001
, fig. 3).
Orinomana
females have entelegyne genitalia, while
Waitkera
is haplogyne, and
Sybota
is intermediate between the two conditions (
Grismado 2001
). Males are easily recognized by the complex, branched embolus (Figs. 1, 3, 7).
Description.
For female see
Opell (1979)
. Male: carapace oval,>1.1 times longer than wide, ocular area not elevated from carapace. Both eye rows recurved, MOQ near 1.6 times longer than wide, ocular area occupying almost 80% of cephalic width. Eyes subequal, except the ALE, the smallest; PME separated by about three times their diameter; clypeus height>1.6 times the AME eyes diameter. Legs: femora I around 1.5 times the carapace length; macrosetae of legs I: femora: 2 prolateral, 4 ventral prolateral; tibiae: 2 retrolateral, 2 prolateral, 3–4 dorsal prolateral, 2 dorsal; metatarsi: 3 prolateral, 3–4 retrolateral. Abdomen with two conspicuous anterodorsal humps. For coloration, see species descriptions.
Palp: tibiae unmodified, cymbium distally notched. Bulb: subtegulum discoidal, tegulum as an apparently incomplete ring, leaving a ventral area less sclerotized; its retrolateral side with a differently wrinkled texture. On the prolateral side articulates the small median apophysis, conductor distally articulated, larger than the MA. Embolus highly modified, with 3–4 branches to different directions. For specific details, see under species descriptions.
Composition and distribution.
Seven known species from western South
America
, mostly in Andean regions (Fig. 9):
O. florezi
n. sp.
from
Colombia
,
O. penelope
n. sp.
from
Ecuador
,
O. bituberculata
(Keyserling 1881)
from
Peru
and
Ecuador
,
O. viracocha
n. sp.
from
Peru
,
O. mana
Opell 1979
from northern
Chile
, and
O. galianoae
Grismado 2000
, and
O. ascha
Grismado 2000
from northwestern
Argentina
.