Australian Museum Journal Scaptodrosophila aclinata: a new Hibiscus flower-breeding species related to S. hibisci (Diptera: Drosophilidae)

Shortform:
McEvey and Barker, 2001, Rec. Aust. Mus. 53(3): 255–262
Author(s):
McEvey, Shane F.; Barker, J. S. F.
Year published:
2001
Title:
Scaptodrosophila aclinata: a new Hibiscus flower-breeding species related to S. hibisci (Diptera: Drosophilidae)
Serial title:
Records of the Australian Museum
Volume:
53
Issue:
3
Start page:
255
End page:
262
DOI:
10.3853/j.0067-1975.53.2001.1332
Language:
English
Date published:
12 December 2001
Cover date:
12 December 2001
ISSN:
0067-1975
CODEN:
RAUMAJ
Publisher:
The Australian Museum
Place published:
Sydney, Australia
Subjects:
INSECTA: DIPTERA; TAXONOMY; ECOLOGY, TERRESTRIAL
Digitized:
12 September 2001
Available online:
12 September 2001
Reference number:
1332
EndNote package:
EndNote file
Title page:
Title page (13kb PDF)
Complete work:
Complete work (413kb PDF)

Abstract

Physiological, ecological and evolutionary studies of Scaptodrosophila hibisci have led to recognition of a second species in the Northern Territory (Australia) which is described here as Scaptodrosophila aclinata n.sp. The new species is readily distinguishable by reference to the first orbital: it is large and proclinate in S. hibisci and small and reclinate in S. aclinata. Scaptodrosophila hibisci has been collected from the flowers of five Hibiscus species in eastern Australia and S. aclinata uses eleven Hibiscus species in the Northern Territory. Only H. meraukensis is a host for both, and there is no evidence of narrow host-specialization. The distributions are apparently disjunct. The two species can be reared in the laboratory on cultured plants. Hybridization studies showed the two species to be partially interfertile; S. aclinata has delayed sexual maturation and extended copulation latency when compared to S. hibisci. This species pair is already the subject of various eco-physiological and reproductive-biological studies because of so many useful experimental attributes: they are interfertile and can be laboratory-cultured, their hosts and reproductive biology are known, they are abundant and easy to find, and research is underpinned by extensive genetic information already available for Drosophila.