Parachaetocladius abnobaeus ( Wülker, 1959 )

William, R., Namayandeh, Armin & Hudson, Patrick L., 2024, Parachaetocladius lenferringtoni (Diptera: Chironomidae), a new orthoclad from North America, with keys to adult males and pupae of the Nearctic Parachaetocladius (Wülker, 1959), Zootaxa 5419 (2), pp. 245-264 : 255-256

Parachaetocladius abnobaeus ( Wülker, 1959)

Figs. 6B, D–F, H–J, L–M ; 7G–L ; 8C–E; 9B, D, G

Chaetocladius (Parachaetocladius) abnobaeus Wülker, 1959

Habrobaenus hudsoni Saether, 1977

Parachaetocladius hudsoni Saether & Sublette, 1983

Description. As described by Wülker (1959), Saether (1977 a, 1980b), and Saether & Sublette (1983), with the following additions and corrections: Larva with 5–6 segments, 6 th segment hair-like an only visible at ≥ 100 × magnification ( Fig. 9B ), antennal blade 1.2–1.7 × the combined length of flagellum; blade 43–63 µm long; base of the blade with annulation ( Fig. 9B ). Postmentum 102–165 µm long. Two short and thin anal setae, 50–71 μm long; one very long and robust apical setae on the procercus; one short and thin lateral seta present on the procercus ( Fig. 9G ). Anal tubules with constriction ( Fig. 9G ).

Material examined. Vouchers, 2 larvae; Mountains of Hesse, in the Black Forest and the Berchtesgadener Land in the German Alps ; leg. T. Bendt, det. T. Bendt; deposited at TB .

Additional material examined. 1 male; CANADA, Nova Scotia, Cape Breton Highlands National Park , PG789882, 31.v.1984; leg. M.E. Dillon Rempel, det. PSC, deposited at CNC, CH9422.3 . 1 male; CANADA, Ontario, Algonquin Park , Canisby Creek, 11.vi.1982; leg. R. Rempel, det. DRO, deposited at CNC, CH5458 . 1 male; same data as previous specimen except 5.v.1981, CH5457. 1 pharate female pupa; FINLAND, Mantta-Vilppulan , Mantta-Vilppulan Iahde, 24.iv.2015; leg. L. Paasivirta, deposited at ZMUO. 1 pupa; FRANCE, Gorg Estelat , Nohèdes Reserve Naturelle Pyrénées, 1240m asl, 30.v.1995; leg. P.H. Langton, deposited at PHL. 1 male; USA, Alabama, Lauderdale County, Bush Creek , Co. Highway 133, 34.926º, -87.979º, 1.v.1985; leg. P.L. Hudson, deposited at PLH . 1 male; USA, Michigan, Lake Michigan, Hog Island State Forest, 46.074º, -85.286º, 30.iv.1990; leg. P.L. Hudson, deposited at PLH. 1 male; USA, Michigan, Mackinac County, Lake Huron , among hemlocks, 45.981, -84.216, 12.v.2001; leg. P.L. Hudson, deposited at PLH. 2 males; USA, Pennsylvania, Crawford County, Kiowa County , Linesville Creek, 41.67º, -80.43º, 01.iv.1979; leg. P.L. Hudson, deposited at PLH. 1 male; Habrobaenus hudsoni Holotype, O.A. Saether, USA, South Carolina, Oconee County, Walhalla National Fish Hatchery , Chattooga River , 15.ii.1976; leg. P.L. Hudson, deposited at CNC, No. 15277. 1 male; USA, South Carolina, Aiken County , Savannah River Plant , upper Three Runs Creek Co. Highway 133, 33.3519º, -81.6311º, 19.xi.1976; leg. P.L. Hudson, det. J.E. Sublette, deposited at PLH. 1 male, same data as previous specimen except 33.3519º, -81.6311º and 14.ix.1976. 1 male, same data as previous specimen except 33.3711º, -81.629º and 11.ii.1976. 1 larva; USA, South Carolina, Aiken County , Savannah River Plant , upper Three Runs Creek , Site D, 33.371º, -81.611º, no date; leg. Pritchard, deposited at PLH. 1 male; USA, South Carolina, Aiken County , Savannah River Plant , Tinker Creek , 33.3378º, -81.6042º, 19.xi.1976; leg. P.L. Hudson, deposited at PLH. 1 larva; USA, South Carolina, Orangeburg County , Santee State Park , 33.561º, -80.501º, 25.ii.1983; leg. P.L. Hudson, deposited at PLH. 1 male; USA, South Carolina, Pickens County , Issaqueena Forest , Indian Creek , 34.742º, -82.859º, 20.i.1980; leg. P.L. Hudson, deposited at PLH. 1 pupa, same data as previous specimen except collection date is 20.vi.1980. 1 pupa; USA, South Carolina, Pickens County , Six Mile Creek , 34.77948º, -82.84855º, 4.ii.1976; leg. P.L. Hudson, deposited at PLH. 1 pupa; USA, South Carolina, Clemson County , spring, Booker Springs Road , 34.6639º, -82.8018º, 28.xi.1982; leg. P.L. Hudson, deposited at PLH. 1 pupa; USA, South Carolina, York County , Wildcat Creek , 34.9112º, -81.0652º, 1.v.1976; leg. P.L. Hudson, deposited at PLH. 1 pupa; USA, South Carolina, Pickens County , Issaqueena Forest , Clemson University , Spring A, 34.742º, -82.854º, 15.iv.1982; leg. P.L. Hudson, deposited at PLH. 2 larvae; USA, South Carolina, Pickens County , Issaqueena Forest , Clemson University , Spring B, 34.741º, -82.854º, 10.iv.1982; leg. P.L. Hudson, deposited at PLH. 1 pupa, same data as previous specimen except collection date is 15.iv.1982. 1 male; USA, South Carolina, Barnwell County , Mill Creek site E, 33.317º, -81.584º, 19.ix.1976; leg. P.L. Hudson, deposited at PLH. 1 male; USA, South Carolina, Barnwell County , lower Three Runs Creek , 33.20º, -81.49º, 3.iii.1977; leg. P.L. Hudson, deposited at PLH. 1 male; USA, Tennessee, Sevier Spring , 12 Miles southeast of Gatlinburg of Route 441, 35.62º, -83.43º, 29.iv.2018; leg. P.L. Hudson, deposited at PLH.

Figures

FIGURE 6. Comparison of some characteristics of Parachaetocladius lenferringtoni sp. nov. and Parachaetocladius abnobaeus (Wülker, 1959) adult males. P. lenferringtoni sp. nov., (A, C, G, K); P. abnobaeus voucher, Alabama (B); P. abnobaeus paratype (D, H); P. abnobaeus voucher, Michigan (E, M); P. abnobaeus holotype of H. abnobaeus (F, I); P. abnobaeus voucher, Nova Scotia (J); P. abnobaeus voucher, Pennsylvania (L). A–B. antenna. C–F. sternapodeme; G–J. inferior volsella (blue arrows); K–M. clypeus. Scale bars are 50 µm. Images D and H courtesy of Mr. M. Spies and Dr. M. Kotrba of ZSM.

FIGURE 7. Comparison of pupal tergite I (A, C, E, G, I, K) and sternite III (B, D, F, H, J, L). Parachaetocladius lenferringtoni sp. nov., USA: Minnesota(A–B); USA: Wisconsin (C–D, blue arrow indicates weak spine row on tergite I). Parachaetocladius hirtipectus Saether, 1969, Holotype, CANADA: British Columbia (E–F, blue arrow indicates large L seta in segment I). Parachaetocladius abnobaeus (Wülker, 1959), USA: South Carolina (G–J, blue arrow indicates weak spine row on tergite I); FRANCE: West Pyrenees (K–L). Scale bars are 100 µm.

FIGURE 9. Comparison of some larval characteristics of Parachaetocladius lenferringtoni sp. nov. USA, Kansas (A), USA, Minnesota (C), USA, Wisconsin (E, F), and Parachaetocladius abnobaeus (Wülker, 1959), GERMANY: German Alps (B, D, G). A–B. antenna (blue arrow indicates the 6th antennal segment); C–D. procercus; E. procercus showing comb of setae (blue arrow indicates comb); F–G. posterior portion of the larva, posterior parapods, and anal tubules. Scale bars are 50 µm for A, B, E, and F and 25 µm for C and D. Images of larval P. abnobaeus are courtesy of Mr. Thomas Bendt.