Eurhopalothrix, Brown & Kempf, 1961

Chaul, Júlio Cezar Mário, 2022, Redescription of Eurhopalothrix reichenspergeri (Santschi, 1923) stat. rev. (Hymenoptera: Formicidae), a Brazilian Atlantic Forest endemic species, Zootaxa 5182 (1), pp. 1-20 : 5-8

publication ID

https://doi.org/10.11646/zootaxa.5182.1.1

publication LSID

lsid:zoobank.org:pub:08E62B78-7462-4EB3-8727-7221899886E9

DOI

https://doi.org/10.5281/zenodo.7050179

persistent identifier

https://treatment.plazi.org/id/03FC87FE-6C42-FFB4-3BD5-5E5F1963FEAA

treatment provided by

Plazi

scientific name

Eurhopalothrix
status

 

A list of the southern South American Eurhopalothrix

Eurhopalothrix bruchi Santschi, 1922

Eurhopalothrix clypeata Brown & Kempf, 1960

Eurhopalothrix depressa Ketterl et al., 2004

Eurhopalothrix lenkoi Kempf, 1967

Eurhopalothrix pilulifera Brown & Kempf, 1960

Eurhopalothrix reichenspergeri ( Santschi, 1923) stat. rev.

Eurhopalothrix speciosa Brown & Kempf, 1960

Eurhopalothrix spectabilis Kempf, 1962

Key to the southern South American Eurhopalothrix species

1 Dorsum of head, mesosoma and metasoma entirely covered on appressed squamose setae. Small species (HW 0.38–0.45) ( Fig. 3 View FIGURE 3 )................................................. E. bruchi (ARG; BRA: SC, PR, SP, RJ, MG, ES, BA; PAR)

- Pilosity never as above, species either mostly glabrous having conspicuous standing setae, sparsely distributed, easily countable, forming symmetrical pairs and ground pilosity never squamose. Various sizes, usually larger than above................ 2 2 Transverse arched ridge present on face.................................................................... 3

- Transverse arched ridge absent on face.................................................................... 4

3 Transverse arched ridge on clypeal region ( Fig. 4 View FIGURE 4 , A)...................................... E. clypeata (BRA: BA)

- Transverse arched ridge on frontovertexal region ( Fig. 4 View FIGURE 4 , B).......................... E. depressa (BRA: SP, SC, RS) 4 Dorsum of head, mesosoma and metasoma devoid of standing setae ( Fig. 5 View FIGURE 5 , A)................................................................................................. E. spectabilis (BRA: BA, MG, SP, PR, SC; PAR).

- Dorsum of head, mesosoma and metasoma having standing “pompon-like” setae ( Fig. 5 View FIGURE 5 , B)......................... 5 5 Infradental propodeal lamella expanded at least in its upper portion ( Fig. 6 View FIGURE 6 , A).................................... 6

- Infradental propodeal lamella small and adjunct to the curvature of the propodeal descending surface ( Fig. 6 View FIGURE 6 , B).......... 7

6 Projecting setae on anterior margin of scape considerably different from those on its dorsal surface. Infradental lamella expanded across its entire length. Large species (HW 0.96)..................................... E. lenkoi (BRA: BA, ES, SP)

- Scape without differentiated setae on its anterior margin when compared to those on its dorsal surface. Infradental lamella becomes thin on its lowermost level ( Fig. 6 View FIGURE 6 , A). Small species (HW 0.53–0.58)........ E. pilulifera (BOL; BRA: BA, GO)

7 Dorsum of head with three pairs of standing setae; promesonotum with two pairs (both at the mesonotal level). Eye large, easily larger than diameter of tip of pompon-like seta as seen from above ( Fig. 7 View FIGURE 7 , A)......... E. speciosa (BRA: MG, RJ, SP, SC)

- Dorsum of head with nine pairs of standing setae; promesonotum with four pairs (two at the pronotum level and two at the mesonotum level). Eye small, not much larger than diameter of tip of pompon-like seta as seen from above ( Fig. 7 View FIGURE 7 , B)......................................................................... E. reichenspergeri (BRA; MG, SP, SC)

With the revival of E. reichenspergeri , registers of E. gravis from southern South America which were not studied, such as that of Silva & Brandão (2014), might in fact represent E. reichenspergeri populations. Only two Eurhopalothrix species, E. clypeata and E. pilulifera , remain occurring both in the southern and in the northern portions of South America ( Fig. 8 View FIGURE 8 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Formicidae