Oropuella pallida, Inc. & Road & Missoula & E-mail, 2020

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 pallida new species

http://zoobank.org/ 340A973D-1804-46BB-BEFA-1750FF294B23

Type material: Holotype male pupa (slide): USA. WASHINGTON: King Co., Boise Creek at Enumclaw golf course. 47.1951°N, 121.9533°W, 30.viii.2017, KC17 BOC002 ; ANSP-ENT-124824 [ ANSP].

Etymology: The Latin adjective pallida refers to the pale adult male.

Diagnostic characters: Adult male. Gonostylus with crista dorsalis weakly curved, not protruding.

Pupa. Sternites VI–VIII with posterior spinule band.

Description: Adult male (pharate). Figs 1b , 2d–f . Measurements (n = 1): flagellomeres (μm): 34, 22, 23, 29, 38, 34, 40, 35, 34, 44, 39, 42, 80; AR: 0.19; anal point 57 μm; gonocoxite 134 μm; gonostylus 44 μm. Habitus uniformly pale.

Genitalia. ~5 setae on each side of anal point. Lateral margin of gonocoxite bulging anteriorly; crista dorsalis parallel to inner margin of gonostylus, weakly curved; megaseta subapical, with closely associated seta at base, large seta subequal in size to megaseta located ¼ length from apex of gonostylus ventral to crista dorsalis, one smaller seta located between megaseta and the large seta and three small setae proximal to large crista dorsalis seta. Medial portion of sternapodeme quadrate; lateral apex of phallapodeme expanded.

Pupa. Fig. 4d . Measurements (n=1): length 2.1 mm. Sternites VI–VIII 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 2. Male genitalia. a–c Oropuella eidolon n. sp.: a) anal point and gonopods; b) left gonopod in dorsal view, right gonopod in ventral view; c) sternapodeme and phallapodemes. d–f) Oropuella pallida n. sp.: d) anal point and gonopods; e) left gonopod in dorsal view, right gonopod in ventral view; f) sternapodeme and phallapodemes. Only significant setae illustrated; scale bars = 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.