Achilia pandemica, Kurbatov & Cuccodoro & Sabella, 2021

Kurbatov, Sergey A., Cuccodoro, Giulio & Sabella, Giorgio, 2021, A revision of the Chilean Brachyglutini - Part 7. Revision of Achilia Reitter, 1890: A. cosmoptera species group (Coleoptera: Staphylinidae: Pselaphinae), Revue suisse de Zoologie 128 (1), pp. 135-156: 149-153

publication ID

http://doi.org/ 10.35929/RSZ.0041

DOI

http://doi.org/10.5281/zenodo.5645648

persistent identifier

http://treatment.plazi.org/id/5F215668-FFDF-FF82-E6C1-FDA880FB5CFD

treatment provided by

Felipe

scientific name

Achilia pandemica
status

n. sp.

Achilia pandemica   n. sp.

Figs 13 View Figs 7-15 , 20 View Figs 16-22 , 29 View Figs 23-32 , 52 View Figs 51-56 , 54 View Figs 51-56 , 56 View Figs 51-56 , 64 View Fig

Holotype: MHNG (# MHNG-ENTO-85483); 1 ♂; CENTRAL CHILE: Región Bío Bío: Concepción Prov.: Periquillo; 21.IX.1996; site TC-486; T. Cekalovic.  

Paratypes (318 ex.): CENTRAL CHILE: Región Bío Bío: Concepción Prov .: NHMW; 4 ♂ and 18 ♀ (identified as A. bifrons   ); Periquillo ; 24.X.1992.   – NHMW 12 ♀ (identified as A. tumidifrons   ); Periquillo ; 24.IX.1993.   – FMNH; 1 ♀; Periquillo ; 10.V.1997; site TC-549; T. Cekalovic.   – MSNG; 2 ♂ and 44 ♀; Periquillo ; 15.IX.1992; site TC-311; T. Cekalovic.   – MHNG (# MHNG-ENTO-85484 through 85488); 1 ♂ and 4 ♀; same data as previous   . – MSNG; 1 ♂ and 24 ♀; Periquillo ; 30.I.1997; site TC-516; T. Cekalovic.   – MHNG (# MHNG- ENTO-85489 through 85491); 3 ♀; same data   . – MSNG; 2 ♀; Periquillo ; 01.IV.1997; site TC-541b; T. Cekalovic.   – MHNG (# MHNG-ENTO-85492); 1 ♀; same data   . – MSNG; 1 ♂ and 55 ♀; Periquillo ; 16.IX.1996; site TC-485; T. Cekalovic.   – MHNG (# MHNG-ENTO-85493 through 85495); 3 ♀; same data.   – PHPC; 2 ♀; same data   . – MHNS; 2 ♀; same data   . – MSNG; 27 ♂ and 40 ♀; Periquillo ; 21.IX.1996; site TC-486; T. Cekalovic.   – MHNG (# MHNG-ENTO-85496 through 85508); 7 ♂ and 6 ♀; same data   . – MHNS; 2 ♂ and 2 ♀; same data   . – MSNG; 35 ♀; Camino a Hualqui ; 17.X.1992; T. Cekalovic.   – MHNG (# MHNG-ENTO-85509 through 85512); 4 ♀; same data.   – UNHC; 1 ♂; Pinares ; 21.X.1977; Acc.Z# 16-683; H. S. Steeves.   – PHPC; 1 ♂; Chaimavida , Estero Agua de la Gloria ; 14.VIII.1978; site TC-83; T. Cekalovic.   – Región Maule: Curicó Prov.: JEBC; 11 ♂; Cerro HuecaHuecan , 15 km E Curicó; 35° 3.97’S 71° 7.45’W; 300 m; 20.II-07.III.2008; luz mercurio, J. E. Barriga-Tuñón.   – MHNG (# MHNG-ENTO-85513 through 85514); 2 ♂; same data   .

Description: Body 1.45-1.65 mm long, entirely reddish, some specimens with slightly darkened abdomen; palpi yellowish.

Male: Head as in Figs 52, 54 & 56 View Figs 51-56 , wide, with slightly raised occipital region and frons; frons flattened laterally with sharp and subparallel sides, separated from frontal lobe by deep and flatten narrowed transverse sulcus. Antennae ( Fig. 20 View Figs 16-22 ) with scape distinctly longer than wide; pedicel and antennomere III slightly longer than wide; antennomere IV about as long as wide; antennomeres V-VII longer than wide; antennomere VIII slightly wider than long; antennomere IX wider than VIII and wider than long; antennomere X distinctly wider than long and wider than IX; antennomere XI elongate, about as long as VII-X combined. Metaventrite with apical portion crossed on two thirds by deep and wide medial suboval impression, impression with prominent margins. First abdominal sternite slightly raised and flattened at middle; remaining abdominal sternites flattened at middle. Mesotibiae ( Fig. 29 View Figs 23-32 ) with distal half swollen and densely pubescent, with stout subapical mesal spine. Aedeagus ( Fig. 13 View Figs 7-15 ) 0.25-0.26 mm long, with ovoidal dorsal plate narrowed and frayed at apex; dorsal longitudinal struts slightly divergent. Parameres relatively wide with large and long recurved seta on well-developed outer lobe; apical portion of parameres slightly enlarged and prolonged laterally as short spine; apex bearing one ventral median seta. Copulatory pieces consisting of a pair of short subequal lateral sclerites recurved and more robust basally.

Female: similar to male except head not modified; antennae shorter; eyes smaller; metaventrite with shallow and narrow medial sulcus; abdominal sternites, and legs unmodified.

Collecting data: The label data indicate a very long collecting period from August to April.

Distribution: Achilia pandemica   n. sp. occurs in Central Chile (Región Bío Bío and Región Maule) from Concepción to Curicó Provinces ( Fig. 64 View Fig : circles edged in green).

Comments: The males of A. pandemica   n. sp. are easily distinguished from other species of the A. cosmoptera   group by the shape of the head ( Figs 52, 54, 56 View Figs 51-56 ), and antennae ( Fig. 20 View Figs 16-22 ). The aedeagus is very similar to that of A. temporalis   , but the shape of the parameres is distinctive. The females of A. pandemica   n. sp. are similar to those of A. temporalis   , from which they can be distinguished by their narrower head with the frons slightly convex and flattened anteromedially (distinctly convex and not flattened in A. temporalis   ), and mostly by the lateral margins of the frons being subparallel and acute with very prominent antennal tubercles (sides of frons slightly convergent, blunt and with antennal tubercles not prominent in A. temporalis   ).

Etymology: The epithet of this new species refers to the COVID-19 pandemic and the periods of quarantine during which this study was carried out by the authors.

MHNG

Museum d'Histoire Naturelle

NHMW

Naturhistorisches Museum, Wien

FMNH

Field Museum of Natural History

MSNG

Museo Civico di Storia Naturale di Genova 'Giacomo Doria'