Stenomicrinae Papp

Mathis, Wayne N., Rung, Alessandra & Kotrba, Marion, 2012, A revision of the genus Planinasus Cresson (Diptera, Periscelididae), ZooKeys 225, pp. 1-83 : 5-6

Subfamily Stenomicrinae Papp

Stenomicridae Papp 1984: 61 [as the family Stenomicridae ]. Type genus: Stenomicra Coquillett, 1900. Mathis and Rung 2011: 359-369 [world catalog].

Diagnosis.

Head: Frons with 2 fronto-orbital setae, 1 reclinate, usually 1 proclinate; at least 1 vertical seta (apparently the lateral) present; postvertical setae usually lacking (present in some Stenomicra , where they are slightly divergent); ocellar setae lacking (a synapomorphy, although present in fossil Procyamops ). Pedicel bearing 1 or more dorsoapical setae.

Thorax: Postpronotum frequently polished, lacking a well-developed seta (a synapomorphy). Wing: No costal breaks, although with weak areas; C extended to vein M; cell cup present, CuA2 usually well developed (weakly developed or lacking in Stenomicra ).

Discussion.

McAlpine (1978, 1983) transferred the genera of this subfamily ( Planinasus , Cyamops , and Stenomicra ) to Periscelididae from Aulacigastridae , leaving only Aulacigaster Macquart ( Schizochroa Hennig is considered a junior synonym of Aulacigaster ) in the subfamily Aulacigastrinae ( Rung and Mathis 2011).

The subfamily Stenomicrinae was first proposed as a monogeneric family with Stenomicra Coquillett as its type genus ( Papp 1984). As we accept McAlpine’s proposal that Stenomicra is related to Planinasus and Cyamops and that this assemblage of genera and those of the subfamily Periscelidinae are likewise related, we prefer recognition of an expanded concept of Periscelididae , with Periscelidinae and Stenomicrinae as included subfamilies.

Although Stenomicrinae are recognized as a subfamily, evidence confirming the monophyly of this subfamily is not compelling nor is its relationship to Periscelidinae ( Winkler et al. 2010). Thus, the genera here included in Stenomicrinae may eventually be placed elsewhere in the suprafamily Asteioinea (superfamily Opomyzoidea ), which is likewise not well characterized, and these genera may not be as closely related to each other as the classification adopted here would infer.

Key to genera of the subfamily Stenomicrinae