Austroascia segersi Thompson & Marnef, 1977,

Barahona-Segovia, Rodrigo M., Riera, Pamela, Pañinao-Monsálvez, Laura, Guzmán, Vicente Valdés & Henríquez-Piskulich, Patricia, 2021, Updating the knowledge of the flower flies (Diptera: Syrphidae) from Chile: Illustrated catalog, extinction risk and biological notes, Zootaxa 4959 (1), pp. 1-178: 22-23

publication ID

https://doi.org/10.11646/zootaxa.4959.1.1

publication LSID

lsid:zoobank.org:pub:3BAB6920-30AC-410A-995B-BBDA9E2A105D

DOI

http://doi.org/10.5281/zenodo.4705373

persistent identifier

http://treatment.plazi.org/id/03FD4340-FFAF-184E-FF27-0B93FC0CFAB4

treatment provided by

Plazi

scientific name

Austroascia segersi Thompson & Marnef, 1977
status

 

Austroascia segersi Thompson & Marnef, 1977 

Figs 16–19View FIGURES 16–19

Austroascia segersi Thompson & Marnef, 1977: 4 

Type locality and data. “ Quintero , Bosque Relicto, Chile ” (HT, ♂, USNM)  .

Material examined. Coquimbo: 2♂, 3♀, El Naranjo, Tilama , no data, Leg. L.E. Peña ( MEUC)  ; Valparaíso: Bosque relicto, Quintero ( Thompson & Marnef 1977); El  Salto, I.1959, Leg. H. Toro ( Thompson & Marnef 1977)  ; Biobío: 1♂, Concepción, 7.XI.1973, Leg. E. Krahmer ( MZUC)  ; La   Araucanía: 1♂, Termas de Palguín , 14–22.II.1966, Leg. Etcheverry ( MNHNCL)  ; Los Ríos: 1♂, 1♀, Santo Domingo , 6.XII.1987, Leg. E. Krahmer ( UACH)  ; 2♂, same locality, 20.I.1974, 30.XII.1979, Leg. E. Krahmer ( UACH)  ; 2♀, Valdivia , 21.XII.1980, Leg. E. Krahmer ( UACH)  ; Los Lagos: 3♂, 6♀, Senda Darwin Biological station , 14.I.2015, Leg. L. Vieli & C. Smith-Ramírez ( CSD)  ; 1♂, 2♀, Caulín, Chacao , II.2016, Leg. C. Smith-Ramírez ( CSD)  .

References. Thompson & Marnef, 1977: 4 (desc.); Thompson, 1999a: 330 (key).

World distribution. Chile.

Chilean distribution. From Coquimbo to Los Lagos region ( Fig. 28View FIGURE 28).

Altitudinal range. From coastal to inland valley ecosystems (5– 450 m.a.s.l.).

Biology and notes. Austroascia segersi  is associated with native trees such as Drimys winteri J.R. Forst. & G. Forst.  , Eucryphia cordifolia Cav.  and Myrceugenia planipes (Hook. & Arn.) O. Berg  (Thomspon & Marnef 1977; C. Smith-Ramírez pers. obs.). Throughout its distribution range, many ecosystems have been negatively affected by plantation forestry, croplands and urbanization ( Alaniz et al. 2016; Miranda et al. 2017). Both males and females are dichoptic ( Figs 16–19View FIGURES 16–19) and sexual dimorphism is generated by the maculae pattern and color of the abdomen. Males present enlarged and yellowish maculae located near the abdominal margin. Females do not present maculae and the abdominal color is reddish.

Conservation status. VU under B2ab (iii) using AOO = 28 km 2 and seven localities (or subpopulations); EOO = 41,336 km 2.

Genus Chamaesphegina Shannon & Aubertin, 1933 

Chamaesphegina Shannon & Aubertin, 1933: 145  . Type-species, argentifacies Shannon & Aubertin (orig. des.).

Desmetrum Enderlein, 1938: 194  . Type-species, macrum Enderlein  (orig. des.).

USNM

Smithsonian Institution, National Museum of Natural History

MEUC

Universidad de Chile

MZUC

Museo de Zoologia, Universidad de Concepcion

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Austroascia

Loc

Austroascia segersi Thompson & Marnef, 1977

Barahona-Segovia, Rodrigo M., Riera, Pamela, Pañinao-Monsálvez, Laura, Guzmán, Vicente Valdés & Henríquez-Piskulich, Patricia 2021
2021
Loc

Austroascia segersi

Thompson, F. C. & Marnef, L. 1977: 4
1977
Loc

Desmetrum

Enderlein, G. 1938: 194
1938
Loc

Chamaesphegina

Shannon, R. C. & Aubertin, D. 1933: 145
1933