Strumigenys subedentata Mayr, 1887

Silva, Thiago Sanches Ranzani Da, Chaul, Júlio Cezar Mário & Feitosa, Rodrigo Machado, 2022, Lectotype designation and redescription of four commonly collected Neotropical species of Strumigenys (Hymenoptera: Formicidae), European Journal of Taxonomy 798 (1), pp. 103-126 : 119-123

publication ID

https://doi.org/10.5852/ejt.2022.798.1673

publication LSID

lsid:zoobank.org:pub:C10C629A-8BD4-46EE-BA5B-CBC396890031

DOI

https://doi.org/10.5281/zenodo.6344137

persistent identifier

https://treatment.plazi.org/id/E53F8786-5748-F255-FDA7-AE6E4362CC70

treatment provided by

Felipe

scientific name

Strumigenys subedentata Mayr, 1887
status

 

Strumigenys subedentata Mayr, 1887

Figs 7–8 View Fig View Fig

Strumigenys subedentata Mayr, 1887: 575 .

Strumigenys tristani Menozzi 1931: 273 , fig. 8 (synonymyzed by Brown 1960).

Strumigenys (Strumigenys) clavata Weber 1934: 32 , fig. 8 (synonymyzed by Brown 1960).

Pyramica kiranae Makhan 2007: 4 figs 7–8 (synonymyzed by Bolton et al. 2008). View Cited Treatment

Pyramica subedentata – Bolton 1999: 1673.

Strumigenys subedentata – Baroni Urbani & De Andrade 2007: 128.

Diagnosis

Strumigenys subedentata can be distinguished from other Neotropical species by the combination of five pairs of remiform setae on promesonotum ( Fig. 8B View Fig ), anterior area of fourth abdominal tergite reticulatepunctate ( Fig. 8C View Fig ), and anterior area of fourth abdominal sternite reticulate-punctate.

Type material

Lectotype (designated herein) (label information) ( Fig. 7 View Fig ) BRAZIL • “ St. Catharina Coll. G. Mayr ” [printed]; “Brit. Mus. 1922–501” [printed]; “ edentata ” [handwritten] “G. Mayr, Type” [printed]; “ BMNH ( E) 1013552 ” [printed]; “ ANTWEB CASENT 0900181 ” [printed]. “Syntype” [printed]. “ Strumigenys subedentata Mayr, 1887 LECTOTYPE” [printed]; NHMUK .

Paralectotypes (label information) BRAZIL • 1 worker; “ St. Catharina Coll. G. Mayr ” [printed; Syntype [printed]; “ Strumigenys subedentata Mayr, 1887 ” PARALECTOTYPE [printed]; NHMW-HYM4957 1 worker; same label information as for preceding; “ Strumigenys subedentata Mayr, 1887 PARALECTOTYPE ” [printed]; NHMW-HYM4958 1 worker; same label information as for preceding; NHMW-HYM4961 1 worker; same label information as for preceding; NHMW-HYM4962 1 worker; same label information as for preceding; NHMW-HYM4963 1 worker; same label information as for preceding; NHMW-HYM4964 1 worker; same label information as for preceding; NHMW-HYM4965 1 worker; “ St. Cath. Hetschko ” [printed]; “Syntype” [printed]; “ Strumigenys subedentata Mayr, 1887 ” PARALECTOTYPE [printed]; NHMW-HYM4959 1 worker; same label information as for preceding; NHMW-HYM4960 1 worker; “ St. Catharina Coll. G. Mayr ” [printed]; “126 Hetschko 1/984” [handwritten]; “ edentata ” [handwritten] “G. Mayr, Type” [printed]; “ Pyramica subedentata ” [handwritten] “det. B. Bolton 1999 ” [printed] “ ANTWEB CASENT 0915703 ” [printed]; “Syntype” [printed]. “ Strumigenys subedentata Mayr, 1887 PARALECTOTYPE ” [printed]. NHMW-HYM4956 1 worker; same label information as for lectotype; “ Strumigenys subedentata Mayr, 1887 PARALECTOTYPE ” [printed]; MCZT_28507 .

Additional material examined

BRAZIL – Amazonas • 1 worker; Manaus, Colosso Camp ; 12–21 Aug. 2016; B. Boudinot, L. Fernandes and J. Chaul leg.; CELC, ANTWEB1038944 . – Bahia • 1 worker; Itacaré ; 14°17′38.0″ S, 38°59′08.6″ W; 23 Aug. 2015; J. Chaul leg.; CELC, UFV-LABECOL-001969 . – GoogleMaps Espírito Santo • 1 worker; Santa Teresa, Estação Biológica Santa Lúcia ; 19°57′58.4″ S, 40°32′21.2″ W; 30 Jan. 2015; T. Vargas leg.; CELC, UFV-LABECOL GoogleMaps 1 worker, 1 queen; near Reserva Biológica Córrego Grande; 18°14′11.3″ S, 39°49′12.1″ W; 21 Apr.–10 May 2017; N. Safar, C. Aquila and C. Guimarães leg.; Winkler; CELC, UFV-LABECOL-008544 . – GoogleMaps Minas Gerais • 1 worker; Viçosa, Floresta Secundária ; Feb. 1994; Sperber, Louzada and Lopes leg.; CELC, UFV-LABECOL-001792 GoogleMaps 1 worker; same collection data as for preceding; CELC, UFV-LABECOL-001780 GoogleMaps 1 worker; Viçosa ; 13 Jan. 1998; S.M. Soares leg.; CELC, UFV-LABECOL-001771 1 worker; Viçosa, Mata da Biologia ; 20°45′26.67″ S, 42°51′39.07″ W; 706 m a.s.l.; Feb. 2013; J. Chaul leg.; CELC, UFV-LABECOL-001797 GoogleMaps 1 worker; Viçosa, Mata da Biologia ; 20°45′30.44″ S, 42°51′49.65″ W; 731 m a.s.l.; 5 May 2013; J. Chaul and N. Safar leg.; epigaeic Winkler; CELC, UFV-LABECOL-001802 GoogleMaps 1 worker, 1 queen; Viçosa, Mata do Paraíso ; 20°48′20.5″ S, 42°51′12.4″ W; 781 m a.s.l.; 2013; J. Chaul and R. Jesus leg.; Winkler; CELC, UFV-LABECOL-008225 GoogleMaps 1 worker; Viçosa, Mata do Seu Nico ; 20°47′43.8″ S, 42°50′51.8″ W; 750 m a.s.l.; 8 May 2013; J. Chaul and R. Jesus leg.; Winkler; CELC, UFV-LABECOL-008225 GoogleMaps 2 workers; Viçosa, Mata da Biologia ; 20°45′30″ S, 42°51′50.3″ W; 17 Aug. 2014; J. Chaul leg.; Winkler; CELC, UFV-LABECOL-001765 GoogleMaps 3 workers; Viçosa ; 20°46′07″ S, 42°52′02″ W; 17 Jul. 2015; J. Chaul, R. Jesus, F. Rezende and A. Orsetti leg.; Winkler; CELC, UFV-LABECOL-008593 GoogleMaps 1 worker; Santana de Patos, Fazenda Lagoa Formosa ; 18°51′45″ S, 46°34′17″ W; Feb. 2014; L-N- Paolucci leg.; CELC, UFV-LABECOL-001779 GoogleMaps 1 worker; São Tiago ; 20°57′09.69″ S, 44°26′32.09″ W; Feb. 2012; M. Padilha leg.; CELC, UFV- LABECOL-010751 GoogleMaps 1 worker; Ipaba, Reserva Particular do Patrimônio Natural Fazenda Macedônia , CENIBRA; Nov. 2005; T. Marques leg.; CELC, UFV-LABECOL-001798 1 worker; Conceição do Mato Dentro, Serra da Serpentina ; 19.03394°S, 43.33687°W; 1–7 Sep. 2010; R.R. Silva leg.; Winkler; CELC, UFV-LABECOL-010461 GoogleMaps Pará • 1 worker; Paragominas ; Jan.–Jul. 2011; R. Solar leg.; CELC, UFV-LABECOL-001804 GoogleMaps 1 worker, 1 queen; Primavera ; 01°00′36″ S, 47°07′04″ W; 5–6 Nov. 2018; L.P. Prado and K.L.S. Sampaio leg.; Winkler; CELC, UFV-LABECOL-010487 . – GoogleMaps Paraná • 4 workers; Floresta Estadual do Palmito   GoogleMaps , km 28; 25°59′10.62″ S, 48°55′68.09″ W; 20 m a.s.l.; 28 Apr. 2016; J. Lattke leg.; DZUP. – Rio de Janeiro • 1 worker; Santa Maria Madalena, Horto Florestal ; 21°57′01.5″ S, 42°00′46.5″ W; 561 m a.s.l.; 30 Oct. 2016; S. Epifânio leg.; Winkler; CELC, UFV-LABECOL-007298 . – GoogleMaps Santa Catarina • 1 worker, 1 queen; Florianópolis, Canto da Lagoa ; 27°32′01.2″ S, 48°27′30.3″ W; 15 Feb. 2016; J. Chaul leg.; CELC, UFV-LABECOL-002490 GoogleMaps 1 worker; same collection data as for preceding; CELC, UFV-LABECOL-008232 GoogleMaps 1 worker; same collection data as for preceding; CELC, UFV-LABECOL-008231 GoogleMaps 1 worker; Florianópolis, Lagoinha do Leste ; 27°46′31.0″ S, 48°29′06.0″ W; 18 Feb. 2016; J. Chaul leg.; CELC, UFV-LABECOL-008222 GoogleMaps 1 queen; same collection data as for preceding; CELC, UFV-LABECOL-008221 GoogleMaps .

PERU – Madre de Dios • 1 worker; Puerto Maldonado, Reserva Nacional Tambopata ; 12°51′21″ S, 69°21′43″ W; 210 m a.s.l.; 19–31 Jul. 2012; R. Feitosa leg.; CELC, UFV-LABECOL-001789 GoogleMaps .

Lectotype measurements

ABD4L 0.455; DPW 0.101; EL 0.054; HL 0.534; HT 0.324; HW 0.475; ML 0.306; PH 0.138; PL 0.283; PPL 0.141; PW 0.291; SL 0.267; WL 0.545; TL 2.264; CI 88.9; DPI 35.7; LPI 48.7; MI 57.3; OI 11.3; SI 56.2.

Paralectotype measurements

ABD4L 0.424; DPW 0.104; EL 0.054; HL 0.500; HT 0.300; HW 0.434; ML 0.282; PH 0.119; PL 0.243; PPL 0.146; PW 0.251; SL 0.242; WL 0.481; TL 2.076; CI 86.8; DPI 42.8; LPI 49.0; MI 56.4; OI 12.4; SI 55.8 (n = 1; CASENT 0915703).

Non-type measurements

ABD4L 0.410 –0.520; DPW 0.105 –0.290; EL 0.055 –0.075; HL 0.490 –0.575; HT 0.300 –0.350; HW 0.430 –0.520; ML 0.270 –0.310; PH 0.130 –0.160; PL 0.240 –0.290; PPL 0.100 –0.135; PW 0.185 – 0.310; SL 0.260 –0.300; WL 0.510 –0.610; TL 2.050 –2.440; CI 85.3–90.4; DPI 40.4–103.6; LPI 50.0– 58.5; MI 52.9–60.8; OI 12.8–15.1; SI 55.8–63.6 (n = 10).

Description

SCULPTURE. Head entirely reticulate-punctate, including antennal scrobe. Mesosoma entirely reticulatepunctate (see Comments). Fourth abdominal tergite reticulate-punctate near base ( Fig. 8C View Fig ). Length of basigastral costulae, in dorsal view, almost half length of postpetiole.

SETAE. Cephalic ground-setae remiform ( Fig. 8A View Fig ). Two pairs of remiform erect setae on cephalic dorsum; both pairs located on posterior third of cephalic dorsum, one pair nearer to occipital margin. Apicoscrobal setae remiform ( Fig. 8A View Fig ). Anterior margin of scape with one or more remiform setae curved towards antennal insertion. Humeral setae remiform ( Fig. 8B View Fig ). Four pairs of erect remiform setae (excluding humeral pair) on promesonotum ( Fig. 8B View Fig ). Setae on petiole, postpetiole and fourth abdominal tergite remiform.

HEAD. Masticatory margin of mandible with five preapical denticles ( Fig. 8A View Fig ; see Comments). Apex of mandible with two minute intercalary denticles ( Fig. 8A View Fig ). Anterior clypeal margin, in dorsal view, angular medially. Eye, in lateral view, with five to seven ommatidia along longest row. Eye located on

anterior half of head. In dorsal view, scape dorsoventrally flattened, expanded throughout its length. Third flagellomere smaller than fourth flagellomere; length of former almost half length of latter.

MESOSOMA. Humerus with small angular projection. Dorsum of mesonotum, in lateral view, convex, confluent with dorsum of pronotum. Metanotal groove relatively well impressed. Propodeal spine long and triangular, translucent, and linked to propodeal lobe by narrow lamella that extends throughout propodeal declivity. Femoral bulla small, ovate and located distally on dorsal margin of sclerite.

METASOMA. Petiolar node, in dorsal view, as long as wide; in lateral view, anterior margin almost as long as dorsal margin. Anterior margin of postpetiole, in dorsal view, slightly concave, almost straight. Lateral and ventral spongiform processes of petiole absent. Ventral spongiform lobe of postpetiole small. Lateral spongiform lobe of postpetiole small. Ventral basigastral spongiform pad reduced to curved (U-shaped in anterior view) carina.

Comments

Bolton (2000) considered S. subedentata as a member of the gundlachi complex (see Comments in S. denticulata ). The lectotype and the additional examined specimens did not show major morphological variation. Most specimens have an entirely reticulate-punctate katepisternum; however, some of them have a small but distinct smooth patch on the ventral-most area of the katepisternum. Although it is not possible to clearly determine if the katepisternum of the lectotype has a smooth patch based solely on images, direct observation of the physical specimen showed that this anatomical region is entirely sculptured (G. Broad pers. comm.).

In the lectotype specimen both mandibles possess five preapical teeth each (G. Broad pers. comm.), while in almost every non-type specimen observed in this study this number varied, in a symmetrical manner, from four to seven in each mandible. However, in a few specimens, we observed asymmetric variation in dentition count, which, despite not being a prevalent condition, it is a noteworthy variation.

Despite the wide range of occurrence of the species, the observed morphological traits did not presented a high variability degree, agreeing with Bolton’s (2000) own observations. Nonetheless, examination of specimens sampled in other ecosystems within the Neotropical region will provide a clearer understanding of morphological variation along the distribution range of S. subedentata , allowing for a better delimitation of the species’ boundaries in future revisionary endeavors.

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

DZUP

Brazil, Parana, Curitiba, Universidade Federal do Parana, Museu de Entomologia Pe. Jesus Santiago Moure

NHMUK

Natural History Museum, London

DZUP

Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure

ML

Musee de Lectoure

PL

Západoceské muzeum v Plzni

PW

Paleontological Collections

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae

Genus

Strumigenys

Loc

Strumigenys subedentata Mayr, 1887

Silva, Thiago Sanches Ranzani Da, Chaul, Júlio Cezar Mário & Feitosa, Rodrigo Machado 2022
2022
Loc

Pyramica kiranae

Makhan 2007: 4
2007
Loc

Strumigenys subedentata

Baroni Urbani C. & De Andrade M. L. 2007: 128
2007
Loc

Pyramica subedentata

Bolton B. 1999: 1673
1999
Loc

Strumigenys tristani

Menozzi 1931: 273
1931
Loc

Strumigenys subedentata

Mayr G. 1887: 575
1887
Loc

Strumigenys (Strumigenys) clavata