Lappodiamesa Serra-Tosio, 1968

Namayandeh, Armin, Hudson, Patrick L., Bogan, Daniel L. & Hudson, John P., 2024, Chironomidae (Diptera: Insecta) of Alaska, USA, with descriptions of new species and a checklist, Zootaxa 5511 (1), pp. 1-95 : 49

Lappodiamesa Serra-Tosio, 1968

A larva of Lappodiamesa vidua (Kieffer, 1922) was collected from a tributary to the Mulchatna River in Southwest Alaska. This tributary was a medium-sized stream with a flow of 0.44 m 3 /s, a very cold temperature of 2.8 ⁰C at the time of sampling in mid-June, and the dominant substrate was coarse gravel ( Fig. 10A–C ). The area was forested canopy in the riparian zone with some large woody debris. Other investigators have found males of this genus near a small stream and immature stages from rivers ( Saether & Willassen 1988). This is a new faunistic record for the Nearctic .

Figures

FIGURE 10. The new Nearctic faunistic records of Alaskan Chironomidae I. Lappodiamesa vidua (Kieffer, 1922) larva (A– C); Acamptocladius submontanus (Edwards, 1932) male (D); Cricotopus (Paratrichocladius) scaturigineus (Makarchenko & Makarchenko, 2014) male, pupa, larva (E–F); Eukiefferiella clypeata Kieffer, 1922 male, pupa (H–J); Eukiefferiella gracei (Edwards, 1929) male, pupa (K–M); Heleniella ornaticollis (Edwards, 1929) male (N); Metriocnemus shoulcarus Sasa, 1989 male (O–P). Paracladius omolonus Makarchenko & Makarchenko, 2006 (Q). Parakiefferiella rara Makarchenko & Makarchenko, 2007 male, pupa (R–S). A. Mentum. B. premandible. C. procercus. D. hypopygium. E. hypopygium. F. tergites II–V. G. mandibles, mentum, labrum. H. hypopygium. I. tergites II–V. J. thoracic horn. K. hypopygium. L. tergites II–V. M. thoracic horn. N. hypopygium. O. antenna. P. hypopygium. Q. hypopygium. R. hypopygium. S. tergites VI–IX. Scale bars are 50 µm.