A revision of the Dwarf Geckos, genus Lygodactylus (Squamata: Gekkonidae) from Angola, with the description of three new species
Author
Marques, Mariana P.
0000-0002-1712-2632
Research Center in Biodiversity and Genetic Resources (CIBIO), InBIO, University of Porto, Rua Padre Armando Quintas 7, Vairão, 4485 - 661 Porto, Portugal & mpltmarques @ gmail. com; https: // orcid. org / 0000 - 0002 - 1712 - 2632 & Museu Nacional de História Natural e da Ciência, Universidade de Lisboa, Rua da Escola Politécnica, 58, 1269 - 102 Lisboa, Portugal & mpltmarques @ gmail. com; https: // orcid. org / 0000 - 0002 - 1712 - 2632 & lmceriaco @ mhnc. up. pt; https: // orcid. org / 0000 - 0002 - 0591 - 9978 & Museu de História Natural e da Ciência da Universidade do Porto, Praça Gomes Teixeira 4099 - 002 Porto, Portugal & lmceriaco @ mhnc. up. pt; https: // orcid. org / 0000 - 0002 - 0591 - 9978 & mpltmarques @ gmail. com; https: // orcid. org / 0000 - 0002 - 1712 - 2632
mpltmarques@gmail.com
Author
Ceríaco, Luis M. P.
0000-0002-0591-9978
Museu de História Natural e da Ciência da Universidade do Porto, Praça Gomes Teixeira 4099 - 002 Porto, Portugal & lmceriaco @ mhnc. up. pt; https: // orcid. org / 0000 - 0002 - 0591 - 9978 & Museu Nacional de História Natural e da Ciência, Universidade de Lisboa, Rua da Escola Politécnica, 58, 1269 - 102 Lisboa, Portugal & mpltmarques @ gmail. com; https: // orcid. org / 0000 - 0002 - 1712 - 2632 & lmceriaco @ mhnc. up. pt; https: // orcid. org / 0000 - 0002 - 0591 - 9978
lmceriaco@mhnc.up.pt
Author
Buehler, Matthew D.
0000-0001-5460-7770
Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085 - 1699, USA & mbuehle 3 @ gmail. com; https: // orcid. org / 0000 - 0001 - 5460 - 7770 & adez. bandeira @ gmail. com; https: // orcid. org / 0000 - 0002 - 7496 - 9119 & Department of Biological Sciences & Museum of Natural History, Auburn University, Auburn, Alabama, 36849, USA & mbuehle 3 @ gmail. com; https: // orcid. org / 0000 - 0001 - 5460 - 7770
mbuehle3@gmail.com
Author
Bandei- Ra, Suzana A.
0000-0001-5460-7770
Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085 - 1699, USA & mbuehle 3 @ gmail. com; https: // orcid. org / 0000 - 0001 - 5460 - 7770 & adez. bandeira @ gmail. com; https: // orcid. org / 0000 - 0002 - 7496 - 9119 & Instituto Nacional da Biodiversidade e Áreas de Conservação, Ministério do Ambiente de Angola, Centralidade do Kilamba, Rua 26 de Fevereiro, Quarteirão Nimi Ya Lukemi, edifício Q 11, 3 º andar, Luanda, Angola. & adez. bandeira @ gmail. com; https: // orcid. org / 0000 - 0002 - 7496 - 9119
mbuehle3@gmail.com
Author
Janota, Joyce M.
0000-0002-7496-9119
Instituto Nacional da Biodiversidade e Áreas de Conservação, Ministério do Ambiente de Angola, Centralidade do Kilamba, Rua 26 de Fevereiro, Quarteirão Nimi Ya Lukemi, edifício Q 11, 3 º andar, Luanda, Angola. & adez. bandeira @ gmail. com; https: // orcid. org / 0000 - 0002 - 7496 - 9119
adez.bandeira@gmail.com
Author
Bauer, Aaron M.
0000-0001-5460-7770
Department of Biology and Center for Biodiversity and Ecosystem Stewardship, Villanova University, 800 Lancaster Avenue, Villanova, Pennsylvania 19085 - 1699, USA & mbuehle 3 @ gmail. com; https: // orcid. org / 0000 - 0001 - 5460 - 7770 & adez. bandeira @ gmail. com; https: // orcid. org / 0000 - 0002 - 7496 - 9119
mbuehle3@gmail.com
text
Zootaxa
2020
2020-09-23
4853
3
301
352
journal article
8437
10.11646/zootaxa.4853.3.1
9ed37c70-0d85-41bf-809f-58349df9a4a7
1175-5326
4410727
802D1C38-1186-4187-8289-5AC125242802
Lygodactylus angolensis
Bocage, 1896
(
Tables 4
;
Fig. 1–11
)
Lygodactylus angolensis
(
Bocage 1896: 110
,
1897: 193
;
Monard 1937: 52
;
Loveridge 1947: 207
;
1957: 187
;
Hellmich 1957: 35
;
Pasteur 1965
[1964]: 56;
Branch 1998: 245
;
Broadley & Cotterill 2004: 41
;
Ceríaco
et al.
2016a: 57
,
2016b: 56
, 57, 2018b: 413, 421, 422;
Marques
et al.
2018
: 188,189;
Branch
et al.
2019: 315
)
Lygodactylus laurae
(
Schmidt 1933: 4
;
Mertens 1937: 6
;
Barbour & Loveridge 1946: 147
;
Marx 1959: 464
;
McCoy & Richmond 1966: 154
)
Lygodactylus capensis
[part] (
Bocage 1895: 15
)
FIGURE 4.
Comparison of the tail scales arrangement in Angolan individuals of
A.
Lygodactylus angolensis
(MHNC-UP/REP 533);
B.
L. nyaneka
sp. nov.
(CAS 263531);
C
.
L. baptistai
sp. nov
.
(CAS 263557);
D.
L. lawrencei
(CAS 264259);
E.
L. tchokwe
sp. nov.
(MD 5312d).
FIGURE 5.
Dorsal and ventral whole-body views (left) and dorsal. lateral and ventral views of the head (right) of the holotype of
Lygodactylys laureae
(CM 5860).
Despite being a widespread species in
Angola
and surrounding countries, the species was only described at the end of the nineteenth century based on two specimens collected by the Portuguese explorer José d’Anchieta “on the walls of a corral” in Hanha,
Benguela Province
(
Bocage 1896
).
Bocage (1896)
noted that some specimens from Cahata and Galanga, both in
Benguela Province
, that he had previously (
Bocage 1895
) identified as
L. capensis
were in fact the newly described species as well. The main characters used by Bocage to diagnose the newly described species against
L. capensis
were the number of perinasal scales (= scales entering the nostril) (four in
L. angolensis versus
three in
L. capensis
), the number of supralabials (eight to nine
versus
six to eight in
L. capensis
) and infralabials (seven to eight
versus
six to seven in
L. capensis
) and the number of preanal pores in males (nine
versus
four to seven in
L. capensis
). In the
type
catalog of the Lisbon Museum,
Bocage (1897)
mistakenly considered both the specimens from Hanha and those from Cahata and Galanga as
types
of
L. angolensis
.
Monard (1937)
reported a putative specimen of
L. angolensis
from Ebanga, but the number of perinasal scales was, in the opinion of the author, different from the typical
L. angolensis
.
Sternfeld (1911)
described
Lygodactylus fischeri
(non
Boulenger 1890
) from
Mozambique
, a name that was later synonymized with
L. angolensis
by
Loveridge (1947)
, which was the first record of the species out of
Angola
. Other records from
Tanzania
,
Zambia
, and
South Africa
(in error) were later provided by Loveridge (1933) and
Pitman (1934)
, respectively.
Schmidt (1933)
, based on the material collected by the Pulitzer Angolan Expedition in Chitau,
Bié Province
, central
Angola
, described
Lygodactylus laurae
(
Fig. 5
). This species was also synonymized with
L. angolensis
by
Loveridge (1947)
, and recent collection of new specimens very close to Chitau (
MHNC-UP
/REP 495–498;
CAS
266003–266009) revealed that the only species present in the region corresponds to
L. angolensis
.
Loveridge (1947)
provided several additional records for
Angola
and
Hellmich (1957)
reported three specimens from Entre Rios,
Benguela Province
. There are extensive records of the species distribution outside
Angola
(see, for example,
Pasteur 1965
[1964] and
Branch 1998
for estimates of the distribution of the species), but no precise locality records have been published from
Angola
since the late 1950s. The first new records of the species were based on specimens collected in Cangandala National Park,
Malanje Province
, by
Ceríaco
et al.
(2016b
;
2018b
). Other recent records are from other areas of
Malanje
(Laúca) and
Bié
(
14 km
by dirt road from Cassumbi village) provinces (see Specimens examined below).
Marques
et al.
(2018)
considered
Laurent’s (1964)
records of
L. capensis
as
L. angolensis
, but subsequent examination of these specimens, which are currently housed in the Museu do Dundo, do not support this synonymization (see account for
Lygodactylus tchokwe
sp. nov.
below).
Diagnosis.
Lygodactylus angolensis
is small dwarf gecko with a maximum SVL of
34 mm
. It can be distinguished from other members of the genus occurring in
Angola
and the surrounding regions by having 1) three scales surrounding the nostril (one supranasal, 1
st
supralabial, one postnasal); 2) nostrils separated from the rostral and pierced above the suture between rostral and first supralabial; 3) mental followed by three postmentals; 4) first infralabial <25% overlap with postpostmental; 5) 19 to 21 rows of ventral scales; 6) between 7 and 10 precloacal pores in males; 7) median subcaudals arranged in an irregular pattern of one row of scales about ⅓ width of the tail alternating with two rows (sometimes just one) of scales of about ½ the width of the tail (
Fig. 4A
); 8) venter cream; 9) without markings on the gular region. The background coloration is usually light grey or light olive-brown. Some individuals have a dark stripe from the snout, through the eye, ending near the forearm insertion. The upper flank is marked with a series of pale spots forming a pale light line. These spots are usually edged with a dark mark above and below sometimes yielding the appearance of an ocellus (
Figs. 6–7
).