Taxonomic revision of the Neotropical ant genus Hylomyrma Forel, 1912 (Hymenoptera: Formicidae: Myrmicinae), with the description of fourteen new species
Author
Ulysséa, Mônica Antunes
text
Zootaxa
2021
2021-10-19
5055
1
1
137
journal article
3884
10.11646/zootaxa.5055.1.1
5994a538-4735-4a87-817e-5e3e7d6213ca
1175-5326
5577660
C00259C2-CB84-42EA-AB16-38DD47153DC6
Hylomyrma villemantae
Neves & Lacau, 2018
Figures 76
,
86
(map)
Hylomyrma villemantae
Neves & Lacau, 2018: 203
(W).
Holotype
:
BRAZIL
:
Bahia
:
Ibicuí
, Serra das Piabas,
14°51′57.93″S
,
40° 2′34.54″W
, elev.
1070 m
,
12.v.2017
,
Lacau S.
,
Neves M.S.
,
Rocha I.N.
,
Oliveira M.L.
,
Silveira B.A.
,
Rodrigues F.S.
cols., LBSA_SA_14015869 (1W) [CPDC] [examined by image].
Paratypes
: same data as holotype, LBSA_SA_14016086, LBSA_SA_14016087, LBSA_SA_14016088, LBSA_SA_14016089, LBSA_SA_14016093, LBSA_SA_14016094, LBSA_SA_14016095, LBSA_SA_14016096, LBSA_SA_14016097 (9W) [
CPDC
] [not examined]
,
LBSA_SA_14016091 (1W) [
CPDC
] [examined by image]
;
same locality as holotype,
02.v.2017
, LBSA_SA_14016100, LBSA_SA_14016101, LBSA_SA_14016102 (3W) [according
Neves & Lacau (2018)
this material should be at MZSP, but it has not deposited there] [not examined]
;
LBSA_SA_14016092, LBSA_SA_14016099, LBSA_SA_14016103 (3W) [
MPEG
] [not examined]
;
same locality as holotype,
29.vi.2008
,
Silva Jr M.R.
,
Godinho L.B.
,
Lacau S.
,
Prado J.V.
,
Ramos Lacau L.S.
cols., LBSA_SA_14016104, LBSA_SA_14016105, LBSA_SA_14016109, LBSA_SA_14016110, LBSA_SA_14016111, LBSA_SA_14016115, LBSA_SA_14016116, LBSA_SA_14016117, LBSA_SA_14016118, LBSA_SA_14016119, LBSA_SA_14016120, LBSA_SA_14016123, LBSA_SA_14016124, LBSA_SA_14016125, LBSA_SA_14016126, LBSA_SA_14016128, LBSA_SA_14016129, LBSA_SA_14016162, LBSA_SA_14014791 (19W) [
CPDC
] [not examined]
,
LBSA_SA_14011273 (1W) [
CPDC
] [examined by image]
;
LBSA_SA_14016106, LBSA_SA_14016107, LBSA_ SA_14016108 (3W) [
MZSP
] [according
Neves & Lacau (2018)
this material should be at MZSP, but it was not deposited there] [not examined]
;
LBSA_SA_14016112, LBSA_SA_14016113, LBSA_SA_14016114 (3W) [
MPEG
] [not examined]
;
14°54′50.06′′S
,
40°2′9.49″W
,
951 m
alt.,
19.xi.2004
,
Jahyny B.J.
,
Lacau S.
,
Ramos Lacau L.S.
cols, LBSA_SA_14011396, LBSA_SA_14011397 (2W) [
CPDC
] [not examined].
Worker (
Fig. 76A–C
)
Diagnosis.
Regular and longitudinal striae on head dorsum diverge towards posterior margin, interspaces between striae smooth, striae crest smooth; mesosoma covered with concentric and elliptical, regular and thick striae; longitudinal striae on lateral of pronotum and mesepisternum in part continuing transversely on propodeum and in part continuing on propodeal spine; transverse carina inconspicuous; propodeal spine midsized; dorsal margin of petiole continuous, strongly convex, mesoventral surface unarmed; petiole, postpetiole, subpostpetiolar process, profemur posterior surface, protibia extensor surface and tergum of first gastral segment smooth; subpostpetiolar process weak, convex.
QUEEN Unknown.
MALE Unknown.
FIGURE 76.
Worker of
Hylomyrma villemantae
(MZHY199 [MZSP]). A) frontal view; B) dorsal view; C) lateral view. Photos by M.A. Ulysséa.
Etymology.
This species was named in honor of Dr. Claire Villemant, a French entomologist, curator of the
Hymenoptera
Collection at Muséum National d’Histoire Naturelle de Paris.
Comments.
The diagnostic characters of this species are sufficient to easily distinguish it from most of its congeners. Still,
Hylomyrma villemantae
is very similar to
H. peetersi
and
H. margaridae
. All three species have a strongly convex petiole, with indistinguishable petiolar peduncle and node, and the body mainly covered with regular and longitudinal striae. Even so,
H. villemantae
can be easily distinguished from both (characteristic in parenthesis) in the striae on the head dorsum with smooth crests (vs. with punctuated crests), the mesosoma with few elliptical and concentric striae (vs. longitudinally striate), the longer propodeal spine (vs. shorter), the unarmed mesoventral surface of petiole (vs. armed), and the smooth dorsum of postpetiole and gaster (vs. with longitudinal striae). All three species are allopatric;
H. villemantae
is recorded from
Brazil
(BA) (
Fig. 86
), whereas
H. peetersi
and
H. margaridae
occur in relatively close areas in northern South America (French Guiana,
Guyana
, and
Venezuela
) (
Fig. 89
).
Distribution.
This species occurs in Ibicuí and Itororó,
Bahia
,
Brazil
(
Fig. 86
).
Natural history.
The biology of this species remains unknown.
Type
specimens were collected in leaf-litter with winkler extractors, at elevations between 951 and
1070 m
in the region known as “
Serra
das Piabas”, a fragment of Atlantic forest in the Brazilian state of
Bahia
.
Additional material examined
(
1 worker
):
BRAZIL
: BA[
Bahia
]:
Itororó, [área] C, 08.08.00, 14.57.31S, 40.02.33W,
Santos J.R.M.
dos (1W) (MZHY199) [
MZSP
]
.