Australian Allograpta Osten Sacken (Diptera, Syrphidae)

Abstract Allograpta terraenovae sp. n. and Allograpta notiale sp. n. are described from Australia. Notes on the Australian species of Allograpta and an identification key to them are also given. The lectotype of Allograpta javana Wiedemann is designated, and the species Syrphus pallidus Bigot is synonymized under Allograpta australensis (Schiner).

Biology. In the ANIC collection, there is a series of males and females collected as larvae on flowers of Eucalyptus.

Diagnosis (modified from
Distribution. India, Sri Lanka, north to Mongolia, China, Korea, Primorye (Primorsky Krai, Russia) and Japan, east to New Guinea, Solomon Islands and Fiji.
Remarks. Allograpta javana (Wiedemann) was confused with A. australensis (Schiner) until Vockeroth (1971) separated the two. All material we have examined is of A. australensis and undescribed species, so the status of the A. javana in Australia is still dubious (Vockeroth also did not know A. javana from Australia). Allograpta javana is similar to A. australiensis in that the katepimeron is yellow, but differs from A. australiensis in the vertical face, not projecting anteriorly (Vockeroth 1971: 1629, figures 1 and 2); abdominal fasciae not narrowed laterally and extending to margins in their fullest widest and the yellow medial annulus on metatibia distinct. Other morphological characters to distinguish these two species are: anepimeron black in A. javana, including dorsomedial portion of anepimeron (dorsomedial anepimeron yellow in A. australensis); male frons yellow pilose in A. javana (mainly black pilose with some yellow pili in A. australensis); male with occiput yellow pilose in A. javana (male with occiput black pilose on dorsal 1/3 and yellow pilose on basal 2/3 in A. australensis); and usually metabasitarsomere pale in A. javana (metabasitarsomere dark in A. australensis).

Allograpta terraenovae
Abdomen. 1 st tergum yellow except narrowly black on apical margin, yellow pilose; 2 nd tergum black except for large yellow medial fascia, which may be narrowly separated medially, shiny along basal and apical margins, black pollinose bordering yellow fascia, yellow pilose on basal 3/4, black pilose apically; 3 rd and 4 th terga black except for large arcuate yellow fascia, shiny along basal and apical margins, black pollinose bordering yellow fascia, black pilose; 5 th tergum black, except for large triangular yellow maculae, black pilose; sterna yellow, white pilose except 4 th sternum black pilose. Male genitalia black, shiny, black pilose.
Female. Similar to male except for normal sexual dimorphism and as follows: frons yellow laterally (about 1/4 of frons width) with a medial, broad, black vitta (about 1/2 of frons width); abdominal fascia narrower than in male, very narrow medially on terga 3 and 4 looking like two joined maculae.
Distribution. Australia (New South Wales, Queensland); Fig. 18. Etymology. The specific epithet is derived from the combination of terra (land, earth) and nova (new), and it refers to Australia. Species epithet to be treated as an adjective.