Ischnopsidea coloradensis Revision of Nearctic Heterischnus Wesmael, 1859 (Hymenoptera, Ichneumonidae, Ichneumoninae, Phaeogenini) Claridge, Brandon Journal of Hymenoptera Research 2021 2021-08-31 85 57 79 3L7LP 3B8007E9-3E33-5E32-A230-55EA28C01352 (Cushman) Cushman 1920 Insecta Ichneumonidae Heterischnus CoL Animalia Heterischnus coloradensis Hymenoptera 0 57 Arthropoda species coloradensis   Figs 4 , 5 , 6   Ischnopsidea coloradensisCushman, 1920: 253. Holotype: ♀ [USNM]. Not examined.  Diagnosis.   Heterischnus coloradensis(Cushman) is chromatically and morphologically similar to  H. huardibut can be distinguished from the latter and other Nearctic species by a combination of the following: 1) male clypeus dark reddish-brown to black; 2) flagellomeres 10/11-12/13 dorsally white in female; 3) supra-antennal area rugulose-punctate; and 4) first lateral area of propodeum rugulose-punctate.  Description.  Female(Fig. 4). Body length: 6.8-8.7 mm. Fore wing length: 4.2-5.1 mm.   Figure 4.  Heterischnus coloradensis(Cushman) female Ahabitus Bmesosoma, lateral view Chead, frontal view Dhead, dorsal view Epropodeum, dorsolateral view. Scale bars: 5.0 mm ( A); 1.0 mm ( B-E).  Color.Head black. Mandible yellowish-white with brown apex. Antenna dark brown with flagellomeres 10/11-12/13 dorsally white. Mesosoma black with following areas white: occasionally anterior margin of pronotum (25% of specimens), posterior 0.2 of dorsal margin of pronotum, usually subalar prominence (60% of specimens), and tegula. Fore and middle legs light brownish-red except for tarsomere 5 brown. Hind leg brownish-red except for basal 0.1 of tibia white, apical 0.2 of tibia brown, tarsomeres brown. Metasoma black to dark brown. Wing membrane clear; basal 0.1-0.2 of wing with veins white, remaining sections brown.  Head.Clypeus smooth, basally with fine punctures separated by 0.5-1.0 xtheir diameter becoming less dense apically; ventral margin with sublateral apical projections subobsolete to obsolete. Malar space 1.5-2.0 xbasal mandibular width. Supraclypeal area rugulose-punctate. Gena smooth, coarsely punctate with punctures separated by 0.2-1.5 xtheir diameter. Supra-antennal area rugulose-punctate. Vertex smooth, finely punctate with punctures separated by 0.5-2.0 xtheir diameter. Antenna with 32-34 flagellomeres.  Mesosoma.Mesonotum smooth, with punctures separated by 0.5-2.0 xtheir diameter. Scutellum smooth, finely punctate with punctures separated by 1.0-2.0 xtheir diameter. Mesopleuron densely, coarsely punctate with punctures confluent to separated by about 0.5 xtheir diameter becoming more sparse dorsally; tendency in some specimens to form lateral rugulae. Speculum coarsely punctate dorsally, smooth ventrally. Ventral division of metapleuron rugulose-punctate. Dorsal division of metapleuron with a few scattered punctures. Propodeum overall rugulose-punctate with areola and posterodorsal face rugulose; carination complete. Tarsal claws simple.  Metasoma.Postpetiole rugulose-punctate. T2 length 1.0-1.2 xposterior width. T2-7 granulate with dense, shallow punctures; punctation becoming sparser and indistinct posteriorly. Gastrocoelus rugulose-granulate. Thyridium distant from T2 anterior margin by 0.5-2.0 xthyridial length.  Male(Fig. 5). Body length 6.8-9.1 mm. Fore wing length: 4.3-5.6 mm. As in female except for: yellowish-white markings on mesosoma more extensive.   Figure 5.  Heterischnus coloradensis(Cushman) male Ahabitus Bhead, frontal view. Scale bars: 5.0 mm ( A); 1.0 mm ( B).  Material examined.    Paratype: USA• 1♀; Colorado, Larimer Co.,  Forrester's; 19.vii.1895; C. F. & N. E. Baker; USNM paratype22850.  Non-type material:  USA• 1♀; California, Modoc Co.  1 mileN of Stough Reservoir; [ 41.5767, -120.2538], 15.vi.1963; UCDC•  1♀; California, Modoc Co., Cedar Pass; [ 41.5623, -120.2688]; 29.vi.1955; D. L. Dahlsten; UCDC•  1♀; California, Nevada Co., Sagehen Cr.near Hobart Mills; [ 39.4342, -120.2048]; 15.vii.1964; M. E. Irwin; UCRCENT529785•  1♀; Colorado, Grand Co., Phantom Valley, Rocky Mountain National Park;  9400 ft; [ 40.2833, -105.8505]; 16.vi.1948; H., M., G.,D. & J. Townes; EMUSENT00000417•  1♀, 3♂♂; Colorado, Routt Co., Steamboat Springs; [ 40.4857, -106.8309]; 6.viii.1948; H., M., G.,D. & J. Townes; EMUSENT00000722, EMUSENT00000132, EMUSENT00000207, EMUSENT00000073•  1♂; same collection data as preceding; 5.viii.1948; EMUSENT00000345•  1♂; Idaho, Oneida Co.,  3 mi.S of Roy Summit; [ 42.2635, -112.7653]; 6.vii.1972; G. F. Knowlton; EMUSENT00000137•  1♂; Idaho, Blaine Co.,  9 mi.SW Bellevue; [ 43.3353, -114.2901]; 28.viii.1965; J. S. Buckett; UCDC•  1♀; Idaho, Boise Co., Idaho City; [ 43.82813, -115.8341]; 9.vi.1978; H. & M. Townes; EMUSENT00000777•  3♀♀; same collection data as preceding; 13.vi.1978; EMUSENT00000258, EMUSENT00000317, EMUSENT00000225•  1♀♀; same collection data as preceding; 14.vi.1978; EMUSENT00000192•  2♂♂; Idaho, Custer Co., nr. Stanley; [ 44.2161, -114.9353]; 2.viii.1978; H. & M. Townes; EMUSENT00000253, EMUSENT00000206•  1♂; same collection data as preceding; 7.viii.1978; EMUSENT00000288•  2♂♂; same collection data a preceding; 8.viii.1978; EMUSENT00000719, EMUSENT00000297•  1♀; Idaho, Oneida Co., Rock Creek; [ 42.4320, -114.3054]; 17.vii.1972; G. F. Knowlton; EMUSENT00000138•  1♂; same collection data as preceding; 6.vii.1972; EMUSENT00000224•  1♂; Montana, Madison Co., 16 milesS. of Cameron; [ 45.0604, -111.6656]; 18.vii.1971; UCDC•  3♀♀; Montana, Gallatin Co., Bozeman; [ 45.6771, -111.0428]; 30.vi.1978; R., B. & C. Dasch; EMUSENT00000629, EMUSENT00000056, EMUSENT00000194•  4♀♀; same collection data as preceding; 7.vii.1978; EMUSENT00000193, EMUSENT00000077, EMUSENT00000566, EMUSENT00000357•  1♂; Nevada, Elko Co., Elko; [ 40.8385, -115.7628]; 21.viii.1964; F. S. Buckett; UCDC•  1♀; Nevada, Elko Co., Tuscarora; [ 41.3146 -116.2233]; 5.vi.1978; H. & M. Townes; EMUSENT00000393•  1♀; Nevada, Storey Co., Virginia City; [ 39.3093, -119.6499]; 14.vi.1951; W. J. Wall; UCDC•  1♀; Oregon, Union Co., Mt. Emily; [ 45.4379, -118.0913]; 03-11.vi.1987; T. R. Torgersen, EMUSENT00000420•  1♀; Utah, Box Elder Co.Willard Peak.;  9000 ft; [ 41.4210, -112.0561]; 25.vii.1960; G. E. Bohart; EMUSENT00000347•  2♀♀; Utah, Cache Co., Black Smith Fork Canyon; [ 41.6278, -111.8040]; 1-6.vii.1964; W. J. Hanson; EMUSENT00000391, EMUSENT00000108•  1♀; Utah, Cache Co., North Logan; [ 41.7706, -111.8045]; 25-31.v.1983; C. R. Nelson; EMUSENT00000030•  1♂; Utah, Cache Co., Tony Grove;  2290 m; 41.8884, -111.6571; 18.v.-1.vi.2019; B. Claridge; Malaise trap; EMUSENT00000547•  1♀; Utah, Cache Co., Tony Grove Canyon; [ 41.8902, -111.6371]; 25.viii.-2.ix.1976; W. J. Hanson; EMUSENT00000026•  1♂; Wyoming, Albany Co., Pole Mountain; 41.22, -105.45; 13-20.vii.2013; Malaise trap, ungrazed short grass prairie; L. Haimowitz, H, Aguirre; EMUSENT00004739.  Distribution and biology. Collecting dates span mid-May to early September, although the greatest number of records are from July and August.  Heterischnus coloradensisoccurs from the Rocky Mountains west to the eastern slopes of the Sierra Nevada Range (Fig. 6). Throughout its range,  H. coloradensisis sympatric with  H. huardi. No host information is known.   Figure 6.Distribution of  Heterischnus coloradensis(Cushman).  Comments. In addition to the examined paratype, a specimen that was compared with the holotype by Henry Townes was examined. 1895-07-19 Forrester's, C. F. & N. E. Baker USA Larimer Co. Larimer Co. 1 1 Colorado Paratype 1963-06-15 USA Modoc Co. 41.5767 1 mile N of Stough Reservoir 6 -120.2538 1 1 California 1955-06-29 D. L. Dahlsten United States of America Modoc Co. 41.5623 Cedar Pass 6 -120.2688 1 1 California 1964-07-15 M. E. Irwin United States of America Co. 39.4342 Hobart Mills 6 -120.2048 Sagehen Cr. 1 1 California 1948-06-16 H., M., G., D. & J. Townes United States of America Grand Co. 2865 40.2833 Rocky Mountain National Park 6 -105.8505 Phantom Valley 1 1 Colorado 1948-08-06 H., M., G., D. & J. Townes United States of America Routt Co. 40.4857 Steamboat Springs 6 -106.8309 4 1 3 Colorado 1948-08-05 H., M., G., D. & J. Townes United States of America Routt Co. 40.4857 Steamboat Springs 6 -106.8309 1 1 Colorado 1972-07-06 G. F. Knowlton United States of America Oneida Co. 42.2635 3 mi. S of Roy Summit 6 -112.7653 1 1 Idaho 1965-08-28 J. S. Buckett United States of America Blaine Co. 43.3353 9 mi. SW Bellevue 6 -114.2901 1 1 Idaho 1978-06-09 H. & M. Townes United States of America Boise Co. 43.82813 City 4 -115.8341 1 1 Idaho 1978-06-13 H. & M. Townes United States of America Boise Co. 43.82813 City 4 -115.8341 3 3 Idaho 1978-06-14 H. & M. Townes United States of America Boise Co. 43.82813 City 4 -115.8341 1 1 Idaho 1978-08-02 H. & M. Townes United States of America Custer Co. 44.2161 Stanley 6 -114.9353 2 2 Idaho 1978-08-07 H. & M. Townes United States of America Custer Co. 44.2161 Stanley 6 -114.9353 1 1 Idaho 1978-08-08 H. & M. Townes United States of America Custer Co. 44.2161 Stanley 6 -114.9353 2 2 Idaho 1972-07-17 G. F. Knowlton United States of America Oneida Co. 42.432 Rock Creek 6 -114.3054 1 1 Idaho 1972-07-06 G. F. Knowlton United States of America Oneida Co. 42.432 Rock Creek 6 -114.3054 1 1 Idaho 1971-07-18 United States of America Madison Co. 45.0604 Cameron 6 -111.6656 1 1 Montana 1978-06-30 R., B. & C. Dasch United States of America Gallatin Co. 45.6771 Bozeman 6 -111.0428 3 3 Montana 1978-07-07 R., B. & C. Dasch United States of America Gallatin Co. 45.6771 Bozeman 6 -111.0428 4 4 Montana 1964-08-21 F. S. Buckett United States of America Elko Co. 40.8385 Elko 6 -115.7628 1 1 Nevada 1978-06-05 H. & M. Townes United States of America Elko Co. 41.3146 Tuscarora 6 -116.2233 1 1 Nevada 1951-06-14 W. J. Wall United States of America Storey Co. 39.3093 City 6 -119.6499 1 1 Nevada 1987-06-03 1987-06-11 1987-06-03 T. R. Torgersen United States of America Union Co. 45.4379 Mt. Emily 6 -118.0913 1 1 Oregon 1960-07-25 G. E. Bohart United States of America Box Elder Co. 2743 41.421 Box Elder Co. 6 -112.0561 1 1 Utah 1964-07-01 1964-07-06 1964-07-01 W. J. Hanson United States of America Cache Co. 41.6278 Black Smith Fork Canyon 6 -111.804 2 2 Utah 1983-05-25 1983-05-31 1983-05-25 C. R. Nelson United States of America Cache Co. 41.7706 North Logan 6 -111.8045 1 1 Utah 2019-05-18 2019-06-01 2019-05-18 Malaise trap B. Claridge United States of America Cache Co. 2290 41.8884 Tony Grove 6 -111.6571 1 1 Utah 1976-08-25 1976-09-02 1976-08-25 W. J. Hanson United States of America Cache Co. 41.8902 Tony Grove Canyon 6 -111.6371 1 1 Utah 2013-07-13 2013-07-20 2013-07-13 Malaise trap L. Haimowitz, Aguirre United States of America Albany Co. Pole Mountain 1 1 Wyoming