Dasyhelea macfiei Díaz and Spinelli, 2014

Díaz, Florentina, Spinelli, Gustavo R., Donato, Mariano & Ronderos, María M., 2014, A taxonomic revision of the Patagonian species of the Dasyhelea mutabilis species group with a phylogenetic analysis of New World species (Diptera: Ceratopogonidae), Journal of Natural History (J. Nat. Hist.) 48 (35 - 36), pp. 2117-2175 : 2140-2142

publication ID	https://doi.org/ 10.1080/00222933.2014.909062
publication LSID	lsid:zoobank.org:pub:39D6AE31-36D1-4CBF-8C43-40050801ECAD
persistent identifier	https://treatment.plazi.org/id/1812973C-2E0E-4ABF-B1F2-B63617CFBE3A
taxon LSID	lsid:zoobank.org:act:1812973C-2E0E-4ABF-B1F2-B63617CFBE3A
treatment provided by	Felipe
scientific name	Dasyhelea macfiei Díaz and Spinelli
status	sp. nov.

Treatment

Dasyhelea macfiei Díaz and Spinelli sp. nov.

( Figures 6 View Figure 6 , 18I,J View Figure 18 , 22 View Figure 22 )

Diagnosis

Only species of Dasyhelea in Patagonia with the following combination of characters: male with posterolateral arm of aedeagus divided and posteromedian projection rectangular with truncate tip; paramere and gonocoxal apodemes forming a symmetrical structure, paramere short with blunt pointed tip; and W/L ratio 2.11–2.29. Female with subgenital plate ovoid; legs including tarsi pale brown and hind tibial comb with 8 spines.

Description of male. Similar to female with usual sexual differences. Antennal flagellum as in Figure 6A View Figure 6 . Palpus ( Figure 6B View Figure 6 ) pale; segment 3 bearing scattered capitate sensilla on basomesal surface; PR 4.00–5.00 (4.55, n = 10). Scutellum with 6–7 large 2–3 thinner setae. Wing ( Figure 18J View Figure 18 ) length 0.75–0.84 (0.80, n = 10) mm, width 0.24–0.30 (0.27, n = 10) mm; CR 0.40–0.44 (0.42, n = 10); haltere pale brown. Genitalia ( Figure 6C View Figure 6 ): tergite 9 rounded distally, extending just below apex of gonocoxites, apicolateral process slender, straight, with apical seta; cercus small with 2 setae; sternite 9 ( Figure 6D View Figure 6 ) 0.4 length of greatest width, posteromedian projection rounded. Gonocoxite stout, 1.7 X longer than greatest width; gonostylus 0.8 length of gonocoxite, base wide, nearly straight, apex slightly hooked, tip pointed. Paramere and gonocoxal apodemes ( Figure 6E View Figure 6 ) forming a symmetrical structure; gonocoxal apodemes stout, slightly curved, both fused to base of paramere; paramere short, slender with blunt pointed tip. Aedeagus 1.2 × longer than greatest width, W/L ratio 2.11–2.42 (2.29, n = 10); anterior margin slightly curved, heavily sclerotized; basal arms stout, posteriorly directed; posterolateral arms divided, heavily sclerotized, inner portion elongate, slender with slightly recurved tip; posteromedian projection wide, rectangular with truncate tip.

Description of female. Head dark brown. Eyes contiguous for a distance of the width of 3–4 ommatidia. Antennal flagellum ( Figure 6F View Figure 6 ) pale; AR 0.84. Clypeus ( Figure 6G View Figure 6 ) with 7 pairs of setae. Palpus ( Figure 6H View Figure 6 ) pale; segment 3 with 1–2 subbasal capitate sensilla; PR 4.20 (n = 2).

Thorax. Scutum dark brown; scutellum paler with 5–6 large, 2–3 thinner setae. Legs pale brown; apex of hind tibia with 8 spines; foreleg TR 1.92–2.03 (1.97, n = 2), midleg TR 2.23, hind leg TR 2.02 (n = 2). Wing ( Figure 18I View Figure 18 ) length 0.90 (n = 2) mm, width 0.42 (n = 2) mm; CR 0.40 (n = 2); membrane slightly infuscated, densely covered with macrotrichia; radial cells obliterated; cubital fork at level of anterior portion of second radial cell. Haltere missing in the two available specimens.

Abdomen. Pale brown. Subgenital plate ( Figure 6I View Figure 6 ) semicircular with broad lumen, posterior margin nearly straight, posteromedian projection short, triangular; posterolateral arms short, apices slightly recurved. Spermatheca ( Figure 6J View Figure 6 ) spherical, heavily sclerotized, diameter 36 µm, neck short, straight, measuring 12 µm.

Distribution ( Figure 22 View Figure 22 )

Argentina (Salta, San Luis, Río Negro, Chubut)

Type material

Holotype male, allotype female, Argentina, Chubut Prov., meseta de Sierra Cuadrada, estancia Don Eduardo , 1/ 2 December 1996, G. Spinelli, Malaise trap ( MLPA).

Paratypes, 20 males, 1 female, as follows: same data as holotype , 1 male, 1 female ( MLPA) . Salta prov., ciudad de Salta, 28 February 2005, G. Spinelli , 2 males, at light ( MLPA) . San Luis prov., ruta Prov. 5, bajo de Veliz , 32°18′43.2″ S, 65°24′43.3″ W, 583 m, 16 November 2007, G. Spinelli GoogleMaps , 1 male, sweep net ( MLPA) . Río Negro prov., Chipauquil ( Pueblo ), 40°57′41.1″ S, 66°38′20.8″ W, 481 m, 3 December 2006, G. Spinelli GoogleMaps , 7 males ( MLPA) , 1 male ( BMNH) , 1 male ( USNM) , 1 male, ( CNCI) , sweep net; same data except ( Puesto Policial ), 4 December 2006 , 4 males ( MLPA) ; meseta de Somuncurá, estancia El Rincón , 40°59′24.1″ S, 66°40′35.7″ W, 620 m, 4 December 2006, M. Donato GoogleMaps , 2 males, sweep net ( MLPA) .

Etymology

This species is named after the late British entomologist John William Scott Macfie, in recognition of his pioneer work dealing with the Ceratopogonidae from Patagonia, that he co-authored with Alexander Ingram.

Phylogenetic relationships

The phylogenetic relationships of this species are discussed in the description of the D. andensis .