Dasyhelea mayor (Strobl)

Dominiak, Patrycja & Szadziewski, Ryszard, 2010, Distribution and new synonymy in European biting midges of the genus Dasyhelea Kieffer (Diptera: Ceratopogonidae), Zootaxa 2437, pp. 1-37 : 19-22

Dasyhelea mayor (Strobl)

( Fig. 4 A–G, 5A–G)

Ceratopogon sericatus var. mayor Strobl, 1906: 397 (male, Spain).

Dasyhelea major [sic!]: Kieffer 1919: 60 (combination, unnecessary name emendation).

Dasyhelea aperta Goetghebuer & Timon David, 1937: 415 (male, female; France). Syn. nov. Dasyhelea wuelkeri Mayer, 1959: 96 (larva, pupa, male, female; Spain, breeding sites – saline habitats). Syn. nov.

Type material. Ceratopogon sericatus v. mayor : Lectotype male and paralectotype male, present designation, labeled as follows: C. sericatus, Algeciras , 12/4 3. Strobl, SYNTYPEN, Ceratopogon sericatus v. mayor , coll. Str. 125/2, 302/7-8, 125/2, ( NMBA). Dasyhelea aperta : Lectotype male, present designation, labeled as follows: Dasyhelea aperta n sp Dr. M. Goetghebuer det., Coll. R. I. Sc. N. B. France, R.I.Sc.N.B. 18.073 Coll. et det., M. Goetghebuer, TYPE 3 M. Goetghebuer, Ilot du Planier France 1937, ( ISNB). Paralectotype female: Dasyhelea aperta n sp Ƥ Dr. M. Goetghebuer det., Coll. R. I. Sc. N. B. France, R.I.Sc.N.B. 18.073 Coll. et det., M. Goetghebuer, COTYPE 3 [sic!] M. Goetghebuer, Ilot du Planier France 1937, ( ISNB). 1 male, labeled as follows: Dasyhelea wülkeri, Hypopyg Zeichn, Fühler Zeichn!!, 3, SYNTYPE, KOH, sp 10, Cabo di Gata, 5.4.54, Wülker, Zoologische Staatssammlung München, Coll. Wülker, ( ZSM). 1 male, labeled as follows: Dasyhelea wülkeri, 1 3, 4 Pe, 1 L, SYNTYPES, Cabo di Gata, Spanien, 5.4.54, Wülker, Spanien 10/14, verastelt, Zoologische Staatssammlung München, Coll. Wülker, ( ZSM). 1 male, labeled as follows: Dasyhelea wülkeri, 3, SYNTYPE, Cabo di Gata, Spanien, 5.4.54, Wülker, Spanien 10/14, verastelt, Zoologische Staatssammlung München, Coll. Wülker, ( ZSM). 2 males, labeled as follows: Dasyhelea wülkeri, (gehäusebauend), 2 3, SYNTYPES, Cabo de Gata, SC-Spanien, Zoologische Staatssammlung München, Coll. Wülker, ( ZSM). 1 male, labeled as follows: Dasyhelea, Flugel , Spanien 1954, mat. Wülker, verastelt, Zoologische Staatssammlung München, Coll. Wülker, ( ZSM)

Diagnosis. Male: Flagellomeres 2–5 of slightly flattened. Clypeus elongate in both sexes. Aedeagus triangular with two long lateral projections. Bridge joining aedeagus with sternite 9 readily visible. Parameres asymmetrical. Female: Spermatheca single. Subgenital plate with small lumen.

Male. Body dark. Antennal flagellum as in figure 4B. Flagellomeres 2–5 slightly flattened; flagellomeres 10–12 with two rows of setae. AR 1.21–1.28 (n=4). Frons elongate ( Fig. 4 D), lower edge barely visible. Clypeus long with numerous setae ( Fig. 4 C). Palpi ( Fig. 4 E) with third palpomere long and slender, palpal ratio PR 5.17–8.22 (n=8). Sensilla capitata present only on segment 3. Scutellum dark with over 20 big and some smaller setae. Wing with one radial cell ( Fig. 4 A), 1.23–1.60 mm (n=7) long. Costal ratio CR 0.47–0.50 (n=7). Tarsal ratio of fore, mid and hind legs as follows: TR (I) 2.01–2.63 (n=7), TR (II) 1.95–2.14 (n=5), TR (III) 1.69–2.03 (n=8). Male genitalia as in figure 4F. Tergite 9 with short apicolateral processes, sternit 9 elongate.

Gonostylus stout at base, slender on distal portion. Arch of aedeagus shallow. Aedeagus triangular with two long lateral projections ( Fig. 4 G), which in some position could be almost invisible ( Fig. 4 F). Bridge joining aedeagus with sternite 9 strongly sclerotized. Parameres asymmetrical, heavy sclerotized. Apicomedian projection long, broad at base and tapering to tip, evenly curved.

Female. Body dark. Antennal flagellum ( Fig. 5 B) not reticulate. Flagellomeres 2–4 rather spherical, 5–12 cylindrical, AR 0.76 (n=1). Frons elongate ( Fig. 5 D), lower edge barely visible. Clypeus long with numerous setae ( Fig. 5 C). Third palpal segment elongate ( Fig. 5 E), PR 5.30 (n=1), pit with sensilla capitata. Scutellum pale (in the original description of D. wuelkeri scutellum was described as dark) with over 20 large and several smaller setae. Wing ( Fig. 5 A) length 1.29 mm (n=1). Two radial cells present, but first barely visible. Costal ratio CR 0.46 (n=1). Tarsal ratios: TR (I) 1.91 (n=1), TR (II) 1.84 (n=1), TR (III) 1.72 (n=1). Spermatheca with short neck ( Fig. 5 G), measuring 0.080x 0.056 mm. Subgenital plate as in Fig. 5 F.

Discussion. Strobl (1906) determined small females (1 mm) from Spain as Cer. sericatus Winnertz , but included larger males (2 mm) in the new variety mayor . We consider the specific name major proposed for mayor by Kieffer (1919) an unnecessary emendation. Our examination of the well preserved types of D. wuelkeri and D. aperta indicates that both are new junior synonyms of D. mayor .

Distribution. Spain, France. This is a Mediterranean species that has been reared from saline habitats.

Figures

FIGURE 4. Dasyhelea mayor (Strobl, 1906), male: A—wing, B—antennal flagellum, C—clypeus, D—frontal sclerite, E—palpus, F—genitalia, G—aedeagus.

FIGURE 5. Dasyhelea mayor (Strobl, 1906), female: A—wing, B—antennal flagellum, C—clypeus, D—frontal sclerite, E—palpus, F—subgenital plate, G—spermatheca.