Kryptochroma hilaris Machado & Teixeira, 2021

Machado, Miguel, Viecelli, Rafaela, Guzati, Catherine, Grismado, Cristian J. & Teixeira, Renato A., 2021, Kryptochroma: a new genus of bark-dwelling crab spiders (Araneae, Thomisidae), European Journal of Taxonomy 778, pp. 26-70 : 34-37

publication ID

https://doi.org/10.5852/ejt.2021.778.1565

publication LSID

lsid:zoobank.org:pub:4AFEC628-D555-44BD-8592-3A338694885F

DOI

https://doi.org/10.5281/zenodo.5686948

persistent identifier

https://treatment.plazi.org/id/803AFFBD-9E9F-41B4-948D-2C427AFBD9B5

taxon LSID

lsid:zoobank.org:act:803AFFBD-9E9F-41B4-948D-2C427AFBD9B5

treatment provided by

Felipe

scientific name

Kryptochroma hilaris Machado & Teixeira
status

gen. et sp. nov.

Kryptochroma hilaris Machado & Teixeira   gen. et sp. nov.

urn:lsid:zoobank.org:act:803AFFBD-9E9F-41B4-948D-2C427AFBD9B5

Figs 4–5 View Fig View Fig , 9 View Fig , 20B, 21B

Diagnosis

The male of K. hilaris   gen. et sp. nov. has a body coloration that resemble that of K. parahybana   . However, it can be distinguished by the stouter, shorter and round embolus, which points retro-ventrally ( Figs 5C, E View Fig , 20B View Fig ). The most striking differences between K. hilaris   gen. et sp. nov. and other species of the genus are the discrete MS on prosoma, that is more like an median elevation on the thoracic area (absent in males), and the number of ventral macrosetae on tibiae I and II: while other species have four pairs on each leg for both sexes, in K. hilaris   sp. nov. the females bear six ventral macrosetae on tibia I ( Fig. 4A View Fig ) while males present only five ( Fig. 5A View Fig ). Females can also be distinguished by the presence of two anterolateral and one median depression on the epigynal plate and by the copulatory openings located in a demilune-shaped concavity delimited by the posterior folds of the tegument ( Figs 4C, E View Fig , 21B).

Etymology

The specific name – a Latin adjective that means cheerful – is a reference to the shape of the posterior fold of the epigynal plate, which resembles a smiling face ( Figs 4C–F View Fig , 21B).

Material examined

Holotype BRAZIL • ♀; Amazonas , Coari , Porto Urucu, Base de Operações Geólogo Pedro de Moura; 04°48′41″ S, 65°02′01″ W; Jul. 2006; S.C. Dias leg.; MPEG 13322 View Materials . GoogleMaps  

Paratypes BRAZIL • 1 ♀; same collection data as for holotype; Sep.–Nov. 2006; N.F. Lo Man Hung leg.; MCTP 42643 View Materials GoogleMaps   1 ♀; same collection data as for holotype; 13 Jul. 2003; D. Guimarães leg.; MCTP 42642 View Materials GoogleMaps   1 ♀; same collection data as for holotype; Sep. 2006; C.A.C. Santos Jr. leg.; MPEG 13311 View Materials GoogleMaps   .

Additional material

BRAZIL – Amazonas State • 1 ♀; Tefé; 03°21′14″ S, 64°42′39″ W; Nov. 1919; H.S. Parrish leg.; MCZ • GoogleMaps   1 ♂; Coari ; 04°51′35″ S, 65°06′17″ W; Sep. 2006; C.A.C. Santos Jr. leg.; MPEG 13302 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°53′45″ S, 65°19′11″ W; Oct. 2006; J.O. Dias leg.; MPEG 13307 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°48′56″ S, 65°01′53″ W; Jul. 2006; C.A.C. Santos Jr. leg.; MPEG 13318 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°50′01″ S, 65°03′53″ W; Sep. 2006; D.F. Candiani leg.; MPEG 13354 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°52′47″ S, 65°20′09″ W; Oct. 2006; N.F. Lo-Man-Hung leg.; MPEG 13363 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°52′07″ S, 65°15′53″ W; 13 Jul. 2003; D. Guimarães leg.; MPEG 22795 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°51′35″ S, 65°06′17″ W; Sep. 2006; S.C. Dias leg.; MPEG 13306 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°52′36″ S, 65°09′05″ W; 14 Jul. 2003; J.O. Dias leg.; MPEG 22819 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°51′54″ S, 65°20′02″ W; Oct. 2006; N.F. Lo-Man-Hung leg.; MPEG 13239 View Materials GoogleMaps   1 ♂; same collection data as for preceding; N.C. Bastos leg.; MPEG 13243 View Materials GoogleMaps   1 ♀; same collection data as for preceding; MPEG 13245 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°52′46″ S, 65°09′50″ W; Nov. 2006; N.F. Lo-Man-Hung leg.; MPEG 13247 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°54′16″ S, 65°19′37″ W; Nov. 2006; C.A.C. Santos Jr. leg.; MPEG 13251 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°48′47″ S, 65°01′57″ W; Jul. 2006; L.T. Miglio leg.; MPEG 13253 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°51′35″ S, 65°06′17″ W; Sep. 2006; N.F. Lo-Man-Hung leg.; MPEG 13263 View Materials GoogleMaps   1 ♂; same locality as for preceding; MPEG 13272 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°48′47″ S, 65°01′57″ W; Jul. 2006; L.T. Miglio leg.; MPEG 13279 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°52′25″ S, 65°09′05″ W; Oct. 2006; N.C. Bastos leg.; MPEG 13280 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°50′30″ S, 65°03′51″ W; Sep. 2006; C.A.C. Santos Jr. leg.; MPEG 13289 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°52′31″ S, 65°10′27″ W; Jul. 2006; L.T. Miglio leg.; MPEG 13290 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°53′30″ S, 65°20′07″ W; Nov. 2006; N.F. Lo- Man-Hung leg.; MPEG 13298 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°48′41″ S, 65°02′01″ W; Jul. 2006; J.O. Dias leg.; MPEG 13299 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°52′06″ S, 65°15′52″ W; Jul. 2006; L.T. Miglio leg.; MPEG 13304 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°48′56″ S, 65°01′53″ W; Jul 2006; J.O. Dias leg.; MPEG 13317 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°51′38″ S, 65°20′04″ W; Oct. 2006; N.F. Lo-Man-Hung leg.; MPEG 13321 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°52′06″ S, 65°15′52″ W; Jul. 2006; C.A.C. Santos Jr. leg.; MPEG 13327 View Materials ) • GoogleMaps   2 ♂♂; same locality as for preceding; 04°48′45″ S, 65°01′58″ W; Jul. 2006; J.O. Dias leg.; MPEG 13329 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°53′14″ S, 65°13′37″ W; Sep. 2006; J.O. Dias leg.; MPEG 13337 View Materials GoogleMaps   1 ♂, 1 juv.; same locality as for preceding; 04°51′54″ S, 65°20′02″ W; Oct. 2006; J.O. Dias leg.; MPEG 13342 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°45′47″ S, 65°02′41″ W; Jul. 2006; C.A.C. Santos Jr. leg.; MPEG 13345 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°50′32″ S, 65°04′08″ W; Sep. 2006; C.A.C. Santos Jr. leg.; MPEG 13348 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°50′30″ S, 65°03′51″ W; Sep. 2006; J.O. Dias leg.; MPEG 13349 View Materials GoogleMaps   2 ♂♂; same locality as for preceding; 04°51′54″ S, 65°20′02″ W; Oct. 2006; N.F. Lo-Man-Hung leg.; MPEG 13352 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°50′32″ S, 65°04′08″ W; Sep. 2006; N.F. Lo-Man- Hung leg.; MPEG 13359 View Materials GoogleMaps   1 ♂; same locality as for preceding; 04°45′47″ S, 65°02′41″ W; Jul. 2006; L.T. Miglio leg.; MPEG 13362 View Materials GoogleMaps   1 ♂;same locality as for preceding; 04°50′50″ S, 65°05′03″W; Sep. 2006; C.A.C. Santos Jr. leg.; MPEG 13368 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°52′36″ S, 65°09′05″ W; 13 Jul. 2003; J.O. Dias leg.; MPEG 22822 View Materials GoogleMaps   1 ♀; same locality as for preceding; 04°51′17″ S, 65°04′14″ W; 17 Jul. 2003; A.B. Bonaldo leg.; MPEG 22830 View Materials GoogleMaps   1 ♂; same locality as for preceding; 19 Jul. 2002; A.B. Bonaldo leg.; MPEG 22835 View Materials GoogleMaps   2 ♀♀; same collection data as for preceding; 21 Jul 2003; J.O. Dias leg.; MPEG 22840 View Materials GoogleMaps   1 ♂; same locality as for preceding; A.B. Bonaldo leg.; MPEG 22846 View Materials GoogleMaps   .

Description

Female (holotype, MPEG 13322)

PROSOMA. Anterior eye row strongly recurved,ALE slightly larger than AME, posterior eye row procurved with subequal eyes; prosoma knobby, light brown with a thin longitudinal yellow line which widens

anteriorly on clypeus ( Fig. 4A–B View Fig ). Chelicerae and sternum light brown with yellow stains, endites and labium truncated and totally light brown.

OPISTHOSOMA. Rough surfaced with a large yellow taint covering the entire dorsal region, except the posterolateral abdominal projections.

LEGS. Anterior coxae and trochanters brown with dorsal yellow stains; other segments of legs I and II light brown with darker taints randomly distributed; legs III entirely yellow, except by metatarsi and tarsi and legs IV with femora half yellow, half light brown ( Fig. 4A View Fig )

MEASUREMENTS. Eye diameters and eye interdistances: AME 0.06, ALE 0.09, PME 0.08, PLE 0.08, AME–AME 0.08, AME–ALE 0.08, PME–PME 0.14, PME–PLE 0.06, MOQ length 0.32, MOQ width 0.32; leg formula: 1-2-4-3: leg I – femur 2.95/ patella 1.55/ tibiae 2.33/ metatarsus 1.45/ tarsus 0.93/ total 9.21; II – 2.33/ 1.24/ 1.55/ 1.29/ 0.77/ 7.18; III – 1.55/ 0.77/ 1.24/ 0.72/ 0.51/ 4.79; IV – 2.07/ 0.77/ 1.29/ 0.88/ 0.67/ 5.68. Total body length 5.94; prosoma 2.84 length, 2.69 width; opisthosoma length 3.10; clypeus 0.16 height; sternum 1.0 length, 0.88 width; endites 0.48 length, 0.29 width; labium 0.32 length, 0.38 width.

Male (MPEG 13239)

PROSOMA. Reddish-brown with a median yellow stripe and dark posterior slope ( Fig. 5A–B View Fig ); MS absent and eye disposition as in females. Sternum scutiform, as long as wide, light brown with a large yellow taint; labium and endites totally light brown and truncated.

LEGS. Legs I and II predominantly light brown with proximal yellow stains on tibiae and distal on metatarsi; posterior legs light brown, except by the bicolor femora ( Fig. 5A View Fig ).

OPISTHOSOMA. Greyish-brown with dark-yellow projections.

MEASUREMENTS. Eye diameters and eyes interdistances: AME 0.06, ALE 0.09, PME 0.06, PLE 0.06, AME–AME 0.06, AME–ALE 0.06, PME–PME 0.11, PME–PLE 0.04, MOQ length 0.24, MOQ width 0.25; leg formula: 1-2-4-3: leg I – femur 1.32/ patella 0.67/ tibiae 1.03/ metatarsus 0.72/ tarsus 0.45/ total 4.19; II – 0.96/ 0.53/ 0.77/ 0.56/ 0.40/ 3.22; III – 0.72/ 0.40/ 0.64/ 0.33/ 0.32/ 2.41; IV – 0.88/ 0.40/ 0.69/ 0.45/ 0.37/ 2.79. Total body length 3.06; prosoma 1.61 length, 1.43 width; opisthosoma length 1.45; clypeus 0.16 height; sternum 0.72 length, 0.62 width; endites 0.32 length, 0.19 width; labium 0.16 length, 0.24 width.

Distribution

Brazil (Amazonas) ( Fig. 9 View Fig ).

MCZ

Museum of Comparative Zoology