Dicranomyia (Dicranomyia) luteipennis Goetghebuer

Starý, Jaroslav, 2009, The identity of Dicranomyia (Dicranomyia) luteipennis Goetghebuer (Diptera, Limoniidae), Zootaxa 2155, pp. 55-68 : 57-59

Dicranomyia (Dicranomyia) luteipennis Goetghebuer in Goetghebuer & Tonnoir, 1920

Figures 1, 7 , 8

Dicranomyia luteipennis Goetghebuer in Goetghebuer & Tonnoir 1920: 108 (description), Figs 1 (wing), 4 (male terminalia).

Dicranomyia luteipennis: Pierre 1924: 73 (key), 78 (diagnosis), Fig. 263 (wing).

Dicranomyia luteipennis: Lackschewitz & Pagast 1941: 19 (key), 28 (redescription), Pl. 6, Fig. 51 (male terminalia).

Limonia (Dicranomyia) luteipennis: Theowald 1977: 177 (redescription, lectotype designation), Figs 8 (male terminalia), 9 (wing).

Dicranomyia (Dicranomyia) luteipennis: Savchenko et al. 1992: 337 (Palaearctic catalogue).

Diagnosis. Large species, on average largest of those treated here. Body colouration yellowish brown to ochreous. Wing pattern dark brown, with proximal three anterior spots reduced. Male terminalia with ventral gonostylus large; rostral spines moderate in length, slightly curved. Wing length 6.8–9.6 mm.

Description. Male. Head. Antenna brown, short, not extending to anterior margin of prescutum. Flagellomeres mostly short-ovoid, with longest verticils subequal in length to their respective segments.

Thorax generally yellowish brown to ochreous, with whitish pruinosity. Pronotum yellowish brown, considerably darkened medially. Prescutum with median area darkened, brown. Pleuron somewhat paler than dorsal parts of thorax. Wing ( Fig. 8 ) tinged with yellow. Wing pattern dark brown; proximal three anterior spots reduced: spot 1 indiscernible, spot 2 restricted to dot at Sc2 not reaching anteriorly beyond Sc, spot 3 considerably reduced, sometimes falling into two dots, one at base of Rs, other at tip of Sc1. Spot 4 (pterostigma) distinct and of normal extent. Distinct, moderately broad seam along outer cord, including distal section of Cu. Another seam along distal margin of discal cell. No seam along proximal section of Cu (proximal to m-cu). Apex of wing slightly infuscated. Sc1 without macrotrichia. In contrast to other species, veins intensively darkened on sections covered with wing pattern. Wing venation with discal cell rather long, proximal section of M1+2 (anterior margin of discal cell) mostly longer than distal section. Tip of A2 beyond Sc2. Legs with tips of femora dark brown, sometimes almost black. Halter with knob moderately infuscated. Tarsi with tarsal claws slightly longer than half length of tarsomeres 5 ( Fig. 7 ).

Abdomen yellowish brown, distal segments darker. Male terminalia ( Fig. 1 ): Tergite 9 with shallow median emargination at posterior margin. Gonocoxite comparatively short, about half length of ventral gonostylus. The latter ovoid, comparatively large, about 1.3 times as long as broad, only slightly enlarged medially in proximal part, with rostral prolongation short, directed more or less medially. Rostral spines short to moderate in length, slightly curved and slightly darkened, distinctly longer than rostrum from base of more distal spine to apex.

Female resembling male in general appearance.

Type material examined. Lectotype 3 (designation by Theowald 1977): Belgium, Gedinne, viii.1920 (A. Tonnoir leg.) ( ISNB), labelled ”3”, ”Gedinne / Août 1920 / A. Tonnoir“, ”M. Goetghebuer det.: / Dicranomyia / luteipennis Goetgh. “, ” TYPE ” (violet), ”cf. Bull. Soc. Ent. / Belg. T. II, 108“, ”R. Mus. Hist. Nat. / Belg. I. G. 10.638“, ” Lectotype / des. Theowald, 1974“. The specimen pinned, with antennae broken off except for basal segments; only left fore and right hind legs attached; terminalia in a glass tube. Paralectotype: Belgium: Hockay, 11. vii.1919, 1 Ƥ (collector not given, possibly M. Goetghebuer) ( ISNB). In 1974, Br. Theowald kindly sent to me the two specimens above, when the type series of D. (D.) luteipennis was on loan with him from ISNB. At that time, I made a drawing of the male terminalia from the holotype. Insufficient material and insufficient experience, however, prevented me from recognizing D. (D.) fuscinota sp. n. as a separate species.

Other material examined (23 3, 8 Ƥ). Czech Republic: Moravia: Jeseníky Mts, Kouty nad Desnou, Divoká Desná valley, “Zámčisko“ (970 m), 21.vii. 2003, 1 3 (at light), 30.viii. 2005, 6 3, 3 Ƥ (at light), 14. ix.2006, 1 Ƥ (at light), 19.viii. 2008, 5 3, 1 Ƥ, 26.viii. 2008, 10 3, 3 Ƥ (J. Starý leg.) ( JSO). Slovakia: Stankovany env., 16.ix. 1985, 1 3 (J. Starý leg.) ( JSO).

Nomenclatural note. There are two different original spellings of D. (D.) luteipennis : luteipennis on p. 108 in the species heading and on p. 109 in the legend for Fig. 1 , and lutripennis on p. 109 in the legend for Fig. 4 ( Goetghebuer & Tonnoir 1920). Although lutripennis may be implicitly considered an inadvertent error, there is no explicit evidence of this in the original publication ( ICZN, Article 32.5.1.), and, hence, luteipennis is fixed here as the correct original spelling ( ICZN, Article 32.2.1.).

Discussion. The wing pattern in D. (D.) luteipennis is rather peculiar, as regards both its restricted extent and considerable intensity. On a distinctly yellow wing membrane, a dark brown seam along the outer cord is the most conspicuous mark ( Fig. 8 ). This full-coloured condition is however not the case for most of the specimens, many of which are more or less teneral. In the structure of the male terminalia, D. (D.) luteipennis most resembles D. (D.) magninota sp. n. and D. (D.) pallidinota sp. n. in having a large and broad ventral gonostylus (cf. Figs 1 and 3–4 ), differing from them in the details specified in the discussions of the respective species.

Distribution. Dicranomyia (Dicranomyia) luteipennis was recorded from the following countries: Belgium, Bulgaria, Czech Republic, France (incl. Corsica), Germany, Italy, Macedonia, Poland, Romania, Slovakia, Switzerland; Lebanon, Syria ( Oosterbroek 2009). The respective specimens from Bulgaria, Czech Republic and Slovakia ( Starý 1974, 1979, Krzemiński & Starý 1989) all were identified by me and belong to D. (D.) fuscinota sp. n., as does the material from Switzerland ( Geiger 1985, 1986b, Podenas et al. 2006) (see Material examined of fuscinota sp. n.). The single specimen from Poland ( Krzemiński 1991) proved to be D. (D.) chorea (see Appendix). The record from Corsica ( Podenas et al. 1997) is based on specimens of D. (D.) pallidinota sp. n., as are the records from Lebanon and Syria ( Starý & Freidberg 2007) (see Material examined of pallidinota sp. n.). The record from Germany by Mendl (1972) is represented by D. (D.) chorea (see Appendix), as apparently is that by Mendl (1977) (the specimens not examined but with collection date 14.–24.v.1976 not probable for luteipennis , nor fuscinota sp. n.). Another record from Germany ( Reusch & Bellstedt 2001, based on Rapp 1942) could not be checked, as could not be the records from France (Thomas 1977), that from Italy by Hartig (1971) [other Italian material recorded by Starý & Oosterbroek (1996) pertains to fuscinota sp. n.; see Material examined of fuscinota sp. n.], from Macedonia ( Simova 1959) and Romania ( Erhan-Dincă 1984). Thus, at present, D. (D.) luteipennis is reliably only known from Belgium, Czech Republic and Slovakia, with questionable records from Germany, Italy, Macedonia and Romania.

Figures

FIGURES 1 – 7. 1 – 6, Male terminalia, general view, dorsal. 1. Dicranomyia (Dicranomyia) luteipennis (Czech Republic: Jeseníky Mts). 2. D. (D.) fuscinota sp. n. (paratype; Czech Republic: Jeseníky Mts). 3. D. (D.) magninota sp. n. (paratype). 4. D. (D.) pallidinota sp. n. (holotype). 5. D. (D.) lorettae (Italy: Piemonte). 6. D. (D.) mattheyi (Switzerland: Graubünden). 7, D. (D.) luteipennis, distal part of male hind tarsus. Scale bars 0.25 mm.

FIGURES 8 – 12. Wing. 8. Dicranomyia (Dicranomyia) luteipennis. 9. D. (D.) fuscinota sp. n. 10. D. (D.) magninota sp. n. 11. D. (D.) pallidinota sp. n. 12. D. (D.) mattheyi.