Kryptochroma gigas Machado & Viecelli & Guzati & Grismado & Teixeira 2021, gen. et sp. nov.
Creators
- 1. Laboratório de Aracnologia, Escola de Ciências, Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.
- 2. División Aracnología, Museo Argentino de Ciencias Naturales " Bernardino Rivadavia ", Buenos Aires, Argentina.
Description
Kryptochroma gigas Machado & Viecelli gen. et sp. nov.
urn:lsid:zoobank.org:act: 6DC79758-A014-4D6F-960B-4C63ACB17982
Figs 3, 9, 21A
DiagnosisThe female of Kryptochroma gigas gen. et sp. nov. resembles those of K. quadrata sp. nov. and K. pentacantha by its large body size, which is significantly larger than in the other species here described. Kryptochroma gigas gen. et sp. nov. can be distinguished by the elevated and short opisthosoma and by the heart-shaped epigynal plate with a short and stout projection over a wide median septum, which divides the median field in two longitudinal gutters reaching the copulatory openings (Figs 3C–F, 21A).
EtymologyThe epithet is a Latin feminine noun that means giant, referring to the bigger size of this species compared to other species of the genus.
Material examinedHolotype BRAZIL • ♀; Minas Gerais, Simonésia, Estação Biológica da Mata do Sossego; 20°04′25″ S, 42°04′13″ W; 28–30 Nov. 2010; M.T.T. Santos leg.; UFMG 4734.
Additional material
None.
DescriptionFemale (holotype, UFMG 4734)
PROSOMA. Anterior eye row very recurved and posterior slightly procurved; prosoma dark yellow with large lateral black taints, median region and posterior slope yellow, contoured by black lines (Fig. 3A– B). Chelicerae dark yellow with black stains, endites and labium black, sternum black with a median yellow taint.
LEGS. Femora I and II dorsally enlarged and with many setiferous tubercles, femora III and IV bicolor, half black, half yellow.
OPISTHOSOMA. Predominantly dark-yellow, black on the back of the abdominal projections and on the sides, rough surfaced and slightly concave on the anterior border (Fig. 3A–B).
MEASUREMENTS. Eye diameters and eye interdistances:AME 0.09,ALE 0.14, PME 0.12, PLE 0.12, AME– AME 0.08, AME–ALE 0.12, PME–PME 0.24, PME–PLE 0.06, MOQ length 0.43, MOQ width 0.48; leg formula: 1-2-4-3: leg I – femur 4.66/ patella 2.59/ tibiae 3.10/ metatarsus 2.17/ tarsus 1.29/ total 13.81; II – 3.83/ 2.07/ 2.84/ 1.86/ 1.29/ 11.89; III – 2.07/ 1.29/ 1.86/ 1.19/ 0.82/ 7.23; IV – 2.59/ 1.19/ 1.86/ 1.29/ 0.82/ 7.75. Total body length 9.62; prosoma 4.40 length, 4.04 width; opisthosoma
length 4.62; clypeus 0.37 height; sternum 1.45 length, 1.20 width; endites 0.69 length, 0.40 width; labium 0.48 length, 0.53 width.
Male
Unknown.
DistributionCentral Brazil (Minas Gerais) (Fig. 9).
Notes
Files
Files
(3.1 kB)
Name | Size | Download all |
---|---|---|
md5:8d543b80d2bd64e69855fd977034308c
|
3.1 kB | Download |
System files
(20.3 kB)
Name | Size | Download all |
---|---|---|
md5:8cb3d4067cb9c0871a59a5d6e045f580
|
20.3 kB | Download |
Linked records
Additional details
Biodiversity
- Collection code
- UFMG
- Event date
- 2010-11-28
- Family
- Thomisidae
- Genus
- Kryptochroma
- Kingdom
- Animalia
- Material sample ID
- UFMG 4734
- Order
- Araneae
- Phylum
- Arthropoda
- Scientific name authorship
- Machado & Viecelli & Guzati & Grismado & Teixeira
- Species
- gigas
- Taxonomic status
- gen. et sp. nov.
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 2010-11-28/30
- Taxonomic concept label
- Kryptochroma gigas Machado & Viecelli, 2021