Drosophila (Sophophora) algonquin Sturtevant and Dobzhansky, 1936

Grimaldi, David A., 2024, The Drosophila (Sophophora) obscura species group in the Americas (Diptera: Drosophilidae): review, revisions, and three new species, American Museum Novitates 2024 (4015), pp. 1-44 : 14

Drosophila (Sophophora) algonquin Sturtevant and Dobzhansky

Figures 9B , 14C

Drosophila (Sophophora) algonquin Sturtevant and Dobzhansky, 1936: 575 .

DIAGNOSIS: Color of thorax varying from light brown to dark black-brown ( Werner and Jaenike, 2017: 79). Like affinis , ♂ ta 1 shorter (0.82×) than ta 2; males easily distinguished from affinis and athabasca by the larger sex comb on ta 1, with generally 7–9 long teeth (ranging 5–10; Sulerud and Miller, 1966); ta 2 with 1 tooth; base of inner ventral epandrial lobe with furrows, no microtrichia.

TYPE: Lectotype, ♂, selected by myself from a series of 8 ♀, 14 ♂, all labeled as “Woods Hole Mass. [printed]/Stock 25 [written]/ A.H. Sturtevant Collection 1970 [printed].” Lectotype labeled by D.G. 12 June 2023. In the USNM. Steyskal did not add a penciled note to any specimen as the type .

SPECIMENS EXAMINED: Besides the type series (above), the following: MASSACHUSETTS: 5 mi. W Ipswich Mass / July 1948 , MR Wheeler (5). NEBRASKA: 1 mi. W Haigler , VIII/24/50, 2070.11 [culture no.], M.R. Wheeler (2) . NEW YORK: Chenango Valley St. Pk. [State Park], N.Y., IV/15-V/6 1982 , D.A. Grimaldi / 1 ♂, ASG 32 ( AMNH); Trumansburg , NY VI/16- 22/1983, D. Grimaldi, coll. (4) . VERMONT: Mad Brook Farm, E. Charleston , Orlean Co., VT VII/15-25/82, D. Grimaldi (3) .

DISTRIBUTION: Eastern North America , except for some southeastern U.S. states (Alabama, Georgia, Florida, South Carolina) .

Figures

FIG. 9. Protarsal male sex combs (tarsomeres ta1 and ta2, and ta3 for D. chibcha from Peru) of species in the affinis subgroup. A. D. affinis (ASG 29); B. D. algonquin (ASG 32); C. D. athabasca (ASG 31); D. D. azteca (ASG 13: San Franciso, CA); E. D. azteca (ASG 06: Leticia, Colombia); F. D. chibcha, n. sp. (ASG 04: Zurqui, Costa Rica); G. D. chibcha, n. sp. (ASG 05: Las Alturas, Costa Rica); H. D. chibcha (ASG 07: Rancho Grande, Venezuela); I. D. chibcha (ASG 08: Wayqecha, Peru); J. D. narragansett (ASG 10); K. D. olmeca (ASG 25); L. D. tolteca (ASG 23). All to the same scale.

FIG. 14. Hypandrium, aedeagus and other appendages of representative species of the affinis subgroup (ventral views). The valves of the aedeagal sheath and the pair of hypandrial lobes are highlighted in color; the postgonites are not. A. D. affinis (ASG 29) (hypandrial lobes hidden); B. D. athabasca (ASG 31); C. D. algonquin (ASG 32); D. D. chibcha, n. sp. (ASG 05), with detail of aedeagal valves of ASG 05 (above), and ASG 08 (below). All to the same scale except details of D. chibcha.