Apotropina costomaculata (Malloch, 1924)

Ang, Yuchen, Lumbers, James & Riccardi, Paula R., 2023, A conspectus of Australian Apotropina (Diptera, Chloropidae) with the description of two new species, ZooKeys 1187, pp. 261-299 : 261

Apotropina costomaculata (Malloch, 1924)

Fig. 10A-D

Parahippelates costomaculata Malloch, 1924: 329.

Lasiopleura (Lasiopleura) costomaculata : Malloch 1940: 270.

Type locality and distribution.

Australia: New South Wales (Sydney).

Examined material.

Holotype ♂ Label transcription: "Australian Museum, K 50094 ; Sydney, 31.12.22, Health Dept.; (red circle label); K50094 ; Parahippelates costomaculata Type, Det J R Malloch"; 33°52'S, 151°13'E. Deposited in the AMRI.

Taxonomic notes.

This brownish species is similar to A. maculigena sp. nov. in that it has a genal macula and wing with an elongate macula on the costal region within cells r1 and r2+3 (Fig. 10A ) but can be reliably differentiated from the latter by its much smaller genal macula (never close to reaching the ventral margin: Fig. 10A ), bearing both dark and whitish genal setae (all black in A. maculigena sp. nov.), lighter anterior gena and legs, and also a less projected frons (Fig. 10B ). Three male specimens from the type locality are known thus far. Female morphology currently unknown but based on the sexual dimorphism exhibited in A. maculigena sp. nov., it is likely that females in A. costomaculata will also have completely hyaline wings. Chaetotaxy as observed: 3-4 vibrissae; 2 strong decussate interfrontal setae; 2 postpronotal setae; 2 scapular setae; 1+1 notopleural setae; weak biseriate divergent acrostichal row; 1+3 dorsocentral setae; 1+1 supra-alar setae; postalar and intrapostalar setae present; 1 strong prescutellar seta; scutellum with 1 discal setula; katepisternal seta missing/indistinct. Original description in Suppl. material 1.

Figures

Figure 10. Apotropina costomaculata (Malloch) holotype ♂ (K 50094) A habitus, lateral view B habitus, dorsal view C head, anterior view D specimen labels.