Taxonomic revision and cladistic analysis of the tarantula genera Tapinauchenius Ausserer, 1871, Psalmopoeus Pocock, 1985, and Amazonius n. gen. (Theraphosidae, Psalmopoeinae)
Author
Cifuentes, Yeimy
Author
Bertani, Rogerio
text
Zootaxa
2022
2022-02-23
5101
1
1
123
http://dx.doi.org/10.11646/zootaxa.5101.1.1
journal article
94309
10.11646/zootaxa.5101.1.1
4a42eedd-7b6a-4c9e-8889-90bb8c8bd032
11755334
6253223
0FD7126B-77A7-4B99-A0E7-04298368C3C4
Psalmopoeus reduncus
(
Karsch, 1880
)
(
Figs 19
,
145
,
183–216
)
Tapinauchenius reduncus
Karsch, 1880: 387
.
Psalmopoeus reduncus
:
Simon, 1903: 960
, fig. 1109;
Petrunkevitch 1911: 86
;
1939: 290
;
Roewer 1942: 256
;
Bonnet 1958: 3798
;
Valerio, 1979: 302
, figs 1–5;
Schmidt, Bullmer & Thierer-Lutz, 2006: 8
, fig. 12;
Gabriel, 2008: 8
;
Mendoza, 2014: 734
, figs 14–15, 21–23, 28;
World Spider Catalog 2021
.
Diagnosis.
Females of
P. reduncus
resemble those of
P. victori
by spermathecae lacking lobes (
Fig. 191
). They can be distinguished by the short spermathecae, distal area medially sclerotized and brownish setae over the hind legs (
Fig. 216
). Males resemble those of
P. victori
by the embolus less than 2.5 times tegulum length (
Fig. 183
). They can be distinguished from
P. victori
by lacking a constriction in proximal part of embolus (Mendonza 2014, figs 18–20).
Type material.
Lectotype
male and
paralectotype
female of
Tapinauchenius reduncus
Karsch, 1880
, from
Costa Rica
, deposited at
Museum
für
Naturkunde
,
Berlin
, not examined
.
Holotype
female of
Psalmopoeus intermedius
Chamberlin, 1940
, from
Panama
,
C. A. Lawrence
col.,
19 July 1937
, deposited at San Diego Natural History Museum, San Diego (
SDMC 65
), not examined
.
Other material examined.
CENTRAL AMERICA: San Miguel, Casto [not readable] leg.,
1 male
, 1932 (
SMF
63323);
NICARAGUA
:
Musawas
,
Waspuc river
[
14°40’N
,
84°19’W
],
1 male
,
B. Malkin
col.,
31 October 1955
(AMNH-5)
;
COSTA RICA
:
Heredia
,
Finca La Selva
, 4
Km SE
Puerto Viejo de Sarapiqui
(
10°27’14.67”N
,
84°01’9.74”W
),
100 m
.
a.s.l, nest on tree trunks,
1 male
,
1 female
and
1 immature
,
October 1981
(CASENT-9071244);
1 male
and
1 female
, same locality and data,
E. Griswold
col. (CASENT- 9071243);
Monte Verde
,
Puntarenas
[
10°16’N
,
84°49’W
],
1 male
,
C. W. Palmer
col.,
22 December 1960
(AMNH-44)
;
PANAMA
:
Barro Colorado island
[
9°09’N
,
79°50’W
],
Canal
zone,
1 female
,
Lundy
col.,
1 September 1955
(AMNH-26)
.
Redescription.
Male
(
CASENT 9071244). Total length, not including chelicerae or spinnerets 25.69. Carapace 13.44 long, 11.17 wide, 6.75 high. Chelicera: 6.94 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 15.58, 7.38, 13.04, 10.94, 6.36, 53.30; II: 13.55, 6.90, 11.13, 10.15, 5.85, 47.58; III: 11.49, 5.87, 9.42, 10.56, 5.48, 42.82; IV: 14.11, 6.16, 12.48, 13.73, 5.20, 52.04; Palp: 9.13, 4.95, 7.77, -, 2.84, 24.69. Midwidths: femora I–IV= 2.58, 1.92, 1.74, 2.03, palp= 1.99; patellae I–IV= 2.50, 2.26, 2.16, 2.21; palp= 1.73; tibiae I–IV= 1.90, 1.81, 1.64, 1.69, palp= 1.74; metatarsi I–IV= 1.46, 1.37, 1.20, 1.08; tarsi I–IV= 1.48, 1.35, 1.27, 1.09, palp= 1.80. Abdomen: 11.69 long, 7.81 wide. Spinnerets: PMS, 1.41 long, 0.60 wide, 0.58 apart; PLS, 2.63 basal, 1.35 middle, 2.55 distal; midwidths 1.04, 0.84, 0.71, respectively. Carapace: 1.20 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 1.68 wide. Eyes: eye tubercle 1.14 high, 1.85 long, 3.00 wide. Clypeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.68, ALE 0.67, PME 0.47, PLE 0.69, AME–AME 0.43, AME–ALE 0.23, AME–PME 0.23, ALE–ALE 2.07, ALE–PME 0.45, PME–PME 1.60, PME–PLE 0.20, PLE–PLE 2.08, ALE–PLE 0.28. Maxilla: length to width 1.69. Cuspules: ca. 154 spread over inner heel. Labium: 2.19 long, 1.89 wide, with ca. 124 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 11 teeth in row. Short and ordered coverage setae densely grouped on the retrolateral side of the chelicera. Strikers: lines of 6–7 spaced filiform setae, disposed on a ventral-basal portion of chelicerae before the teeth row (
Fig. 193
). Sternum: 6.80 long, 5.42 wide.
Legs: Formula: I = IV II III. Length leg IV to leg I: 0.98. Scopula: Tarsi I–IV fully scopulate; IV with a few sparse setae. Metatarsi I–II fully scopulate; III 2/3 distal; IV 1/3 distal. IV divided by setae. Spination: Palp and legs (ventral apical: tibia/metatarsi): Palp 0; I: 1 behind retrolateral process; II: 2/0; III 0/2; IV 1/2. Maxilla stridulatory organ: composed of 10–12 thick setae forming a straight crescent line, setae increase in size from the internal to external side of maxillae; longest ones flattened laterally, tips of setae with rugous texture, 7 slender setae after thickest ones (
Fig. 192
). Short and ordered coverage setae densely grouped on the retrolateral side of the maxillae/coxae, trochanter, proximal part of palp femur and prolateral side of the same articles of leg I. Tibial apophysis (
Figs 187–189
): two processes, retrolateral longer than prolateral, one spine at side of prolateral, one at apical part of retrolateral process. A small rounded protuberance behind retrolateral process. Metatarsus I folds on retrolateral side of tibial apophysis.
Palp (
Figs 183–186
): tegulum length 1.50, width 1.99, embolus proximal width 0.71, embolus length 3.40. Embolus proximal portion straight. Embolus distal third curves gently to retrolateral side. Embolus tapers to its tip ending in a curved tip. Embolus length to tegulum width: 2.27.
Color pattern (preserved in alcohol): Carapace, legs, palpal femora, and tibiae light brown, abdomen brown.
Redescription.
Female (CASENT 971243). Total length, not including chelicerae or spinnerets 37.26. Carapace 17.21 long, 15.19 wide, 9.71 high. Chelicera: 8.51 long. Legs (femur, patella, tibia, metatarsus, tarsus, total): I: 12.91, 8.57, 10.53, 9.73, 5.93, 47.67; II: 11.73, 7.98, 9.92, 9.53, 5.57, 44.73; III: 10.34, 6.64, 8.41, 9.10, 5.19, 39.68; IV: 13.17, 7.48, 11.36, 11.86, 5.23, 49.1; Palp: 9.19, 5.79, 6.78, -, 7.60, 29.36. Midwidths: femora I–IV= 3.42, 3.18, 3.26, 2.70, palp= 2.63; patellae I–IV= 3.58, 3.12, 3.17, 2.94, palp= 2.63; tibiae I–IV= 3.10, 2.75, 2.63, 2.58, palp= 2.65; metatarsi I–IV= 2.63, 2.29, 1.77, 1.84; tarsi I–IV= 2.15, 2.05, 1.97, 1.96, palp= 2.40. Abdomen: 19.18 long, 11.61 wide. Spinnerets: PMS, 1.99 long, 0.80 wide, 1.11 apart; PLS, 2.67 basal, 1.92 middle, 3.37 distal; midwidths 1.41, 1.43, 1.02, respectively. Carapace: 1.13 times longer than wide; cephalic region slightly raised, thoracic striae conspicuous. Fovea: deep, straight, 2.97 wide. Eyes: eye tubercle 0.81 high, 2.44 long, 3.74 wide. Clypeus: absent. Anterior eye row straight, posterior slightly recurved. Eye size and interdistances: AME 0.85, ALE 0.94, PME 0.64, PLE 0.65, AME–AME 0.60, AME–ALE 0.30, AME–PME 0.19, ALE–ALE 2.57, ALE–PME 0.52, PME–PME 2.11, PME–PLE 0.24, PLE–PLE 2.90, ALE–PLE 0.36. Maxilla: length to width 1.45. Cuspules: ca. 159 spread over ventral inner heel. Labium: 2.39 long, 3.11 wide, with ca. 137 cuspules spaced by one diameter from each other on anterior third. Chelicera: basal segment with 8 teeth in row. Short and ordered coverage setae densely grouped on retrolateral side of chelicera. Strikers: line of 5–6 spaced long filiform setae, disposed on a ventral-basal portion of chelicera before the teeth row (
Fig. 195
). Sternum: 8.80 long, 7.52 wide.
FIGURES 183–191.
Psalmopoeus reduncus
.
(183–190)
male (CASENT 9071244).
(183–186)
left bulb (mirrored).
183,
retrolateral.
184,
prolateral.
185,
frontal.
186,
dorsal.
(187–189)
left leg I tibial apophysis.
187,
ventral.
188,
prolateral.
189,
retrolateral.
190,
female (CASENT 9071243), spermathecae.
191,
female (CASENT 9071244), spermathecae. Scale bars = 1 mm.
Legs: Formula: I = IV II III. Length leg IV to leg I: 1.03. Scopula: Tarsi I–IV fully scopulate; IV with a few sparse setae. Metatarsi I–II fully scopulate; III 1/2 distal; IV 1/3 distal. IV divided by rows of setae. Spination: Palps and legs (ventral apical: tibia/metatarsi): Palp 0; I: 0/0; II 0/0; III 1/2; IV 0/1. Maxilla stridulatory organ: composed of 15 thick setae forming a straight crescent line, setae increase in size from the internal to external side of maxillae; longest ones flattened laterally, tips of setae with rugous texture, 13 slender setae after thickest ones (
Fig. 194
). Short and ordered coverage setae densely grouped on the retrolateral side of the maxillae/coxae, trochanter, proximal part of palp femur and prolateral side of the same articles of leg I.
Spermathecae: Two spermathecae completely separated, roughly straight, ending in a single terminal lobe (
Fig. 191
).
Color pattern (preserved in alcohol): Carapace and abdomen light brown with some golden setae, leg and palpal femora and tibiae brown.
Distribution.
Costa Rica
,
Nicaragua
,
Panama
(
Fig. 145
).
Remarks.
Psalmopoeus intermedius
Chamberlin, 1940
was described from an uncertain locality in
Panama
. The type specimen was not available to this study as it is on loan since 2011, and there is no prevision of return. However,
Gabriel and Sherwood (2020)
published a photo of the
holotype
spermathecae, short with a slight constriction on its distal portion. They considered the species valid, but did not compare it with
P. reduncus
, the most common
Psalmopoeus
species
in Central America, especially in
Costa Rica
, the neighboring country. They stated
P. reduncus
needs redescription and that
P. intermedius
can be tentatively distinguished from other species by biogeography. Among the studied material, we examined a female from
Panama
, Barro Colorado Island (AMH- 26) having similar spermathecae, short and with a slight constriction near its tip (
Fig. 215
).
Valerio (1979)
showed considerable variation in
P. reduncus
spermathecae shape in
Costa Rica
, and the spermathecae of the
P. intermedius
holotype
is among the variation found in the species. Thus, we consider
P. intermedius
a junior synonym of
P. reduncus
.