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.

 
Download Complete Work

Bibliographic Data

Short Form
McEvey and Barker, 2001, Rec. Aust. Mus. 53(3): 255–262
Author
Shane F. McEvey; J. S. F. Barker
Year
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
/Uploads/Journals/17929/1332.enw
Title Page
/Uploads/Journals/17929/1332.pdf
File size: 13kB
Complete Work
/Uploads/Journals/17929/1332_complete.pdf
File size: 413kB