Revision of type specimens of Astaena (Coleoptera: Scarabaeidae: Melolonthinae: Sericini) described by L. W. Saylor
Author
Pacheco, Thaynara L.
146CF81B-1394-456C-A768-BFFDE3E213D0
Laboratório de Coleoptera, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. & Centre of Taxonomy and Evolutionary Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany.
thay.lpacheco@gmail.com
Author
Monné, Marcela L.
86B186B4-4297-4380-A98D-FC813B5D53A6&2FF2B7D6-1A6B-43C1-9966-A1A949FB2B05
Laboratório de Coleoptera, Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. & Laboratório de Scarabaeoidologia, Departamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Brazil.
mlmonne2@gmail.com&vazdemello@gmail.com
Author
Vaz-De, Fernando Z.
2FF2B7D6-1A6B-43C1-9966-A1A949FB2B05
Laboratório de Scarabaeoidologia, Departamento de Biologia e Zoologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Brazil.
vazdemello@gmail.com
Author
Ahrens, Dirk
DEDCE5CF-AA11-4BBF-A2C6-D7C815019714
Centre of Taxonomy and Evolutionary Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany.
ahrens.dirk_col@gmx.de
text
European Journal of Taxonomy
2021
2021-05-19
750
750
94
123
http://dx.doi.org/10.5852/ejt.2021.750.1365
journal article
4031
10.5852/ejt.2021.750.1365
818d0bc4-31a6-4319-86a3-6e6b16ab72df
2118-9773
5451747
CE5D8517-AC04-4AF9-BD78-A2D6E21D33A8
Astaena excisipes
Saylor, 1947
Figs 2A–D
,
7A
Astaena excisipes
Saylor, 1947b: 433
.
Astaena excisipes
–
Frey 1973: 347
(identification key). —
Evans 2003: 22
(checklist). — Evans &
Smith 2005: 7
(checklist); 2007: 7 (checklist); 2009: 7 (checklist).
Type material examined
Holotype
ECUADOR
•
♀
; “Ecuador Baron /
Coll. Kraatz
/ L.W. Saylor Collection / California Academy of Sciences Type nº 7910 /
Astaena producta
Bates
? / Moser det. / Holotype
Astaena excisipes
L.W. Saylor
”;
CAS
.
Holotype
redescription
MEASUREMENTS. Length:
9.5 mm
. Width:
4.7 mm
.
HEAD. Reddish-brown. Labroclypeus, shape of anterior margin weakly sinuated medially. Ocular canthus with terminal setae, ratio to eye: 1/4. Ratio third vs fourth antennomere: 1/4. Fourth antennomere, lateral projection absent. Ratio fifth vs fourth antennomere: 1/5.
PRONOTUM AND ELYTRA. Surface of pronotum and elytra without setae. Pronotum unicolored, reddishbrown, widest at middle, anterior marginal line present, posterior marginal line absent, lateral margin straight and not serrated, two angles on postero-lateral margin present, antero-lateral angle dorsoventrally not flattened, postero-lateral angle dorso-ventrally not flattened, punctation on disc dense, median longitudinal excavation absent. Scutellum, punctures absent medially. Elytra unicolored, reddishbrown, surface opaque, microsculpture absent, punctation on intervals present and dense, diameter of strial and interval punctation equal.
ABDOMEN. Lateral carina present. Second visible ventrite without row of setae in medial region. Apical visible ventrite without suture to apical tergite.
LEGS. Metacoxa without longer lateral bristles, a laterally extended longitudinal shelf present. Metatibia, widest at apex, dorsal margin not carinated, ventral margin serrated, distal spines groups disposed at two thirds of metatibial length. First metatarsomere, ratio to dorsal metatibial spur: 1/2. Dorsal surface of tarsi glabrous, without punctures. Metatarsi, length of first protarsomere smaller than second and third combined, ventral margin serrated and setose. Protibia with three teeth. Protarsi, length of first protarsomere subequal to second and third combined, second protarsomere narrow, claws symmetrical, inner protarsal claw bifid.
Male
Unknown.
Remarks
The
holotype
specimen is a female;
Saylor (1946)
incorrectly stated that the
holotype
as a male.