Cryptotendipes emorsus Townes

• Main Author: Epler, J. H.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Cryptotendipes; Cryptotendipes emorsus; Alabama; Caldwell; Canada; Sakhalin
• Online Access: https://zenodo.org/record/5998219; https://doi.org/10.5281/zenodo.5998219

Cryptotendipes emorsus (Townes) Harnischia (Harnischia) emorsa Townes, 1945: 161. Original description. Cryptotendipes emorsus (Townes), Saether 1977: 97, fig. 34A; Yan et al. 2005: 2, figs 1A–C; Zorina 2006: 343, Figs. 1–2, Saether 2010: 8, figs. 4A–E. Townes (1945) described the species from Iowa, New Jersey, New York, Ohio and Washington, D.C., material. Saether (1977) keyed the adult of this species and illustrated the hypopygium (Saether 1977: fig. 34A); Saether (2010) keyed, described and illustrated the female, pupa and larva based on material from Manitoba, Canada. Caldwell et al. (1997) listed it from Florida, North Carolina and South Carolina. The species has a Holarctic distribution; Makarchenko et al. (2005) list it from Moneron Island (a small island off the southwest coast of Sakhalin Island, Russia, north of Hokkaido, Japan), and Zorina (2006) included it in her key for Cryptotendipes of the Russian Far East. Saether (1977) stated in his key that the superior volsella of C. emorsus was “without microtrichia”; Yan et al. (2005) made a similar statement in their key. However, examination of numerous specimens, including the holotype’s hypopygium, indicates that the appendage does bear microtrichia near the base (Figs. 5, 6, 7). This condition was also noted in Zorina’s (2006) key to Far Eastern Russian Cryptotendipes species. Most pupae bear a row, interrupted medially, of clear, thin spines anteriorly on S I and II; Saether (2010) noted them only on S I. Saether (2010: 9) gave postmentum lengths of 120–130, mean 125 µm for C. emorsus larvae. In a sample of ten larvae from Florida, postmentum lengths ran from 118–143, mean 127 µm. This is the most common species of Cryptotendipes in Florida. Material examined: ALABAMA: Elmore Co., Channahatchee Creek 1.7 miles NE of Kent, 31-v-1988 [APC- 5], leg. W.E. Garrett, 1 male [JHE]. Macon Co., Euphapee Creek 1.2 miles NNE of Franklin at Hwy 49 [APC-27], 10–28-iii-1989, leg. W.E. Garrett, 1 male [JHE]. FLORIDA: Alachua Co., Santa Fe River @ Worthington ...