Paramixogaster indica ( Doleschall, 1857 )

Reemer, Menno & Sankararaman, Hariharakrishnan, 2024, Revision of the Oriental species of the hoverfly genus Paramixogaster Brunetti, 1923 (Diptera, Syrphidae, Microdontinae), ZooKeys 1208, pp. 1-48 : 1-48

publication ID

https://doi.org/ 10.3897/zookeys.1208.122829

publication LSID

lsid:zoobank.org:pub:5F3E1286-D578-4F4B-AD83-F5BC46D651A4

DOI

https://doi.org/10.5281/zenodo.12821490

persistent identifier

https://treatment.plazi.org/id/AFACC0EC-E77C-5875-84F6-88E125CBD196

treatment provided by

ZooKeys by Pensoft

scientific name

Paramixogaster indica ( Doleschall, 1857 )
status

 

Paramixogaster indica ( Doleschall, 1857)

Figs 20 View Figures 19, 20 , 22 View Figures 21, 22 , 123–124 View Figures 123, 124 , 125–129 View Figures 125–129 , 136 View Figures 130–137

Ceratophya indica Doleschall, 1857: 404. Holotype: Indonesia, Ambon ( HNHM, lost) [not examined].

Microdon indicus ( Doleschall, 1857) – Thompson and Vockeroth 1989: 438. View in CoL

Paramixogaster indicus ( Doleschall, 1857) – Reemer and Ståhls 2013 a: 145.

Paramixogaster wegneri Keiser, 1964: 84. Syn. nov. Holotype ♂: Indonesia, Maluku, Ambon ( NMB) [examined]; Knutson et al. 1975: 374; Thompson and Vockeroth 1989: 439; Reemer and Ståhls 2013 a: 145. View in CoL

Studied type specimens.

Holotype of Paramixogaster wegneri Keiser. Indonesia • 1 ♂; label 1 (red): “ TYPUS ”; label 2 (pale green): “ INDONESIA // AMBON // 6. I. 61 // A. M. R. WEGNER ”; NMB.

Paratype of of Paramixogaster wegneri Keiser. Indonesia 1 ♀; Ambon; 1 Jan. 1961; A. M. R. Wegner leg.; NMB .

Paratypes of of Paramixogaster wegneri Keiser. Indonesia • 5 ♂; Ambon; 5 different collection dates: 29 Oct. 1960, 23 Nov. 1960, 8 Dec. 1960, 12 Dec. 1960, 11 Jan. 1961; A. M. R. Wegner leg.; NMB .

Additional specimens.

Indonesia • 2 ♂ 2 ♀; Buru ; 7 Dec. 1921; L. J. Toxopeus leg.; RMNH ; 1 ♀; Buru ; 8 Dec. 1921; L. J. Toxopeus leg.; RMNH 1 ♀; Ambon [no further data]; NHMUK 1 ♀; West Papua, Fak-Fak ; A. E. Pratt leg.; NHMUK [ 013933418 ] .

Diagnosis.

Body length: males 7.5–9.5 mm (n = 8), females 9–11 mm (n = 6). This belongs to the group of species without lateral bulges on the frons. From P. luxor it differs by the postpedicel being longer than the scape (shorter in P. luxor ). From P. contracta and P. conveniens it differs by the incomplete transverse suture (complete in P. contracta and P. conveniens ). From P. sacki it differs by tergites 3 and 4 being black with yellow posterior margin (yellow with pattern of black vittae in P. sacki ). It differs from P. jubata Reemer , sp. nov. by the shorter tergite 2, of which the posterior margin is wider than the median length (longer in P. jubata Reemer , sp. nov.), the dark anterior margin of the scutellum (entirely yellow in P. jubata Reemer , sp. nov.) and the shorter setulae on the vertex.

Paramixogaster indica is most similar to P. vespiformis , from which it differs by the continuous yellow vitta between postpronotum and posterior callus (interrupted in P. vespiformis ), and the longer postpedicel in the male, which is 4.4–5.6 × as long as the scape (3.3–3.7 × as long in P. vespiformis ). Male: postpedicel 4.4–5.6 × as long as scape (n = 6). Female: postpedicel 2.4–2.9 × as long as scape (n = 5). The degree of infuscation of wing apex is very variable. Male genitalia as in Fig. 136 View Figures 130–137 .

Notes.

No type specimen of Ceratophya indica Doleschall is known. However, the description and illustration of this species from Ambon by Doleschall (1857) correspond well to the studied type specimens of Paramixogaster wegneri by Keiser (1964), which was also described from Ambon. Keiser (1964) does not mention P. indica , so probably he was unaware of it. Based on the descriptions and illustrations, these taxa share the following characters: postpedicel 4–6 × longer than scape, face, and vertex partly yellow, mesoscutum black, wing with infuscate apex, tergite 2 narrowest at base and with two apically diverging yellow vittae, tergites 3 and 4 black with yellow hind margins. Based on these similarities and the shared type locality ( Ambon), P. wegneri Keiser syn. nov. is here considered to be a junior synonym of Ceratophya indica Doleschall.

This species is very closely related to P. vespiformis (de Meijere) . The differences between these taxa are small but consistent.

Distribution.

Known from eastern parts of Indonesia, east of the Wallace Line: the Maluku islands of Ambon and Buru, and West Papua. Specimens were collected between October and January.

HNHM

Hungarian Natural History Museum (Termeszettudomanyi Muzeum)

NMB

Naturhistorishes Museum

RMNH

National Museum of Natural History, Naturalis

NHMUK

Natural History Museum, London

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Syrphidae

Genus

Paramixogaster

Loc

Paramixogaster indica ( Doleschall, 1857 )

Reemer, Menno & Sankararaman, Hariharakrishnan 2024
2024
Loc

Paramixogaster indicus ( Doleschall, 1857 ) – Reemer and Ståhls 2013 a : 145 .

Reemer M & Ståhls G 2013: 145
Paramixogaster indicus ( Doleschall, 1857 ) – Reemer and Ståhls 2013 a : 145 .
2013
Loc

Microdon indicus ( Doleschall, 1857 ) – Thompson and Vockeroth 1989: 438 .

Thompson FC & Vockeroth JR 1989: 438
Microdon indicus ( Doleschall, 1857 ) – Thompson and Vockeroth 1989: 438 .
1989
Loc

Paramixogaster wegneri

Reemer M & Ståhls G 2013: 145
Thompson FC & Vockeroth JR 1989: 439
Knutson LV & Thompson FC & Vockeroth JR 1975: 374
Keiser F 1964: 84
1964
Loc

Ceratophya indica

Doleschall CL 1857: 404
1857