Orthocladius (Euorthocladius) annellae Saether, 2005, sp. n.

• Main Author: Saether, Ole A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2005
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Orthocladius; Orthocladius annellae; Canada; Northwest Territories
• Online Access: https://zenodo.org/record/6266208; https://doi.org/10.5281/zenodo.6266208

Orthocladius (Euorthocladius) annellae sp. n. (Figs. 47 –55, 66, 67) Orthocladius (Euorthocladius) rivicola Soponis, 1990: 26, pro parte not Kieffer, 1911. Type material Holotype mature ɗ pupa, CANADA: Northwest Territories, FWI Pipeline Project,?Oscar Creek, 25 v 1972, det. A. Soponis as O. rivicola (ZMBN Type No. 408). Paratypes: 5 ɗ, 1 Ψ, 1 ɗ reared from pupa, 2 mature ɗ pupae, 15 pupal exuviae; as holotype (ZMBN) Etymology Named in honour of Annelle R. Soponis who has revised both the subgenus Euorthocladius, and the nominal subgenus, and has additional publications on this important genus. Diagnostic characters The male imago is separable from those of the other species of the subgenus Euorthocladius, except O. (E.) rivicola, by having uniserial scutellar setae, robust crista dorsalis, sensilla chaetica on ta 1 of p 2, low antennal ratio (1.0– 1.2), virga present, and inferior volsella with ventral part extended relatively prominently below dorsal part (see Remarks). The female imago differs from those of O. (E.) rivicola and O. (E.) ashei by having smaller seminal capsules and completely straight spermathecal ducts. The pupa differs from those of other members of the subgenus by lacking posterior spines or hooklets on tergites II and III, no pedes spurii A on sternite VI, precorneals and dorsocentrals not spine­like and less than 30 spines on tergite VI. The larva is unknown. Male imago (n = 9 except when otherwise stated) Total length 2.66–3.13, 2.95 mm (7). Wing length 1.75–2.24, 1.95 mm (5). Total length/wing length 1.39–1.69, 1.53 (5). Wing length/length of profemur 3.02–3.08, 3.05 (5). Coloration light brown with vittae, lower part of preepisternum and postnotum blackish brown. Head (Fig. 47). AR 1.02–1.23, 1.09. Ultimate flagellomere 394–529, 442 µm long. Temporal setae 13 –18, 15; including 3 –8, 6 inner verticals; 3 –9, 6 outer verticals; and 1 –6, 3 postorbitals. Clypeus with 7 –12, 10 setae. Tentorium 131–173, 167 µm (6) long; 38 –41, 39 µm (6) wide. Stipes 105–169, 131 µm (6) long; 23 –49, 36 µm ...