Oropuella sp. F

Fasbender, Andrew, 2020, OROPUELLA, A NEW GENUS OF ORTHOCLADIINAE FROM THE WESTERN NEARCTIC Abstract, CHIRONOMUS Journal of Chironomidae Research 33, pp. 17-30 : 24

Oropuella sp. F 1

Material examined: USA. CALIFORNIA: Lassen Volcanic National Park, King’s Creek , 40.4664°N, 121.4142°W 16.viii.2017, NPS17LAS007 (1 female pupa (slide) ANSP-ENT-124825 ; 1 larva with pharate pupal features (slide); ANSP-ENT-124827 [ ANSP]) .

Diagnostic characters: Adult female. Tergite IX triangular, with ~14 setae. Gonapophysis VIII dorsomedial lobes broadly separated.

Description: Adult female (pharate). Figs 1c , 3a, d, g . Measurements (n = 1): flagellomeres (μm): 65, 44, 44, 41, 50; AR 0.25; spermathecae 169– 200 x 106–118. Tergite IX triangular. Gonapophysis VIII dorsomedial lobe weakly convergent at apex, coming to distinct point; ventrolateral lobes fused medially with U shaped notch.

Pupa. Fig. 4e . Measurements (n=1): length 2.5 mm. Sternites VI–VII with posterior spinule band.

Figures

Figure 1. Adult antennae. Male antennae: a) Oropuella eidolon n. sp.; b) Oropuella pallida n. sp. Female antennae: c) Oropuella sp. F1; d) Oropuella sp. F2; e) Oropuella sp. F3. a), b) and d) exhibit some foreshortening due to the position of the antenna on the specimen; setae omitted; scale bar = 100 μm.

Figure 3. Female genitalia. a–c overall dorsal view: a) Oropuella sp. F1; b) Oropuella sp. F2; Oropuella sp. F3. d–f overall ventral view: d) Oropuella sp. F1; e) Oropuella sp. F2; f) Oropuella sp. F3. g–i spermathecae: g) Oropuella sp. F1; h) Oropuella sp. F2; i) Oropuella sp. F3. Scale bar = 100 μm.

Figure 4. Pupae. a) Oropuella eidolon n. sp. complete abdomen, dorsal view; b) Oropuella sp. F2 thoracic horn; c) Oropuella eidolon n. sp. apical abdominal segments, ventral view; d) Oropuella pallida n. sp. apical abdominal segments, ventral view; e) Oropuella sp. F1 apical abdominal segments, ventral view; f) Oropuella sp. F2 apical abdominal segments, ventral view; g) Oropuella sp. F3 apical abdominal segments, ventral view. Setae omitted except in 4a, setae D2–5 illustrated only on tergite V; scale bars = 100 μm.