Banca de QUALIFICAÇÃO: ISABELLE DA ROCHA SILVA CORDEIRO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : ISABELLE DA ROCHA SILVA CORDEIRO
DATE: 24/06/2021
TIME: 10:00
LOCAL: on-line
TITLE:

Phylogenetic analysis of Hydrometridae Billberg, 1820 (Insecta: Hemiptera: Heteroptera)

KEY WORDS:

Semiaquatics bugs, Phylogeny, Gerromorpha, Neotropical

PAGES: 118
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Zoologia Aplicada
SUMMARY:

Representatives of the Hydrometridae family are semi-aquatic insects easily
distinguished because they have an elongated head and body, with eyes distant from the
anterior margin of the prothorax. It currently includes three subfamilies (Hydrometrinae,
Heterocleptinae and Limnobatodinae), with 10 genera and about 130 living species
distributed worldwide, except for Antarctica, in addition to 11 fossil genera. The
knowledge about the phylogenetic relationships between the subfamilies, genera and
species of Hydrometridae is extremely incipient, being based mainly on a small set of
morphological characters raised originally by ANDERSEN (1977). With an
examination of the literature and 574 specimens distributed in 10 genera: Bacillometra
(2 spp. Nov.), Hydrometra (45 spp. And 5 spp. Nov.), Limnobatodes (1 sp.),
Spelaeometra (2 spp. Nov. ) and Veliometra (1 sp. and 1 sp. nov.) as an internal group
and Mesovelia (1 sp.) Mesoveloidea (1sp.), Hebrus (1 sp.), Merragata (1 sp.) and
Lipogomphus (1 sp.) as an external group, 170 morphological characters were surveyed
and encoded, of which 133 were binary and 37 were multistate. The analysis was
performed with a heuristic search in the TNT 1.5 program in the taxon limit, which
resulted in 1,313 more parsimonious trees with 511 steps. Hydrometridae monophyllism
was not recovered, since Veliometra, currently allocated to the subfamily
Heterocleptinae and her only representative in the present analysis, was recovered as a
sister group of Hebridae. The subfamily Hydrometrinae (represented by Hydrometra,
Bacillometra and Spelaeometra) was also not recovered as monophyletic in the present
analysis, due to the position of Limnobatodes. Spelaeometra's position as a sister group
of the Limnobatodinae + other Hydrometrinae clade, in the present work, suggests that
this genus may represent a separate subfamily. Hydrometra, in the present preliminary
analysis showed almost no resolution in the relationships between species. The
polytomy found points to a non-exhaustion in the survey of characters.

BANKING MEMBERS:
Externo à Instituição - CRISTIANO FELDENS SCHWERTNER - UNESP
Interno - 106.487.357-02 - FELIPE FERRAZ FIGUEIREDO MOREIRA - UFRJ
Presidente - 387200 - FRANCISCO GERSON ARAUJO
Externa à Instituição - JULIANNA FREIRES BARBOSA - UFRJ