Revision of Swedish Homalocephala Zetterstedt (Diptera, Otitidae) HUGO ANDERSSON

Andersson, H.: Revision of Swedish Ilozalocephala Zetterstedt (Diptera, Otitidae). IRevision av de svenska artema av flugsliiktet Homalocephala Zetterstedt (Diptera, Otitidae).1 - Ent. Tidskr. 1 12:27-32. Ume6, Sweden 1991. ISSN 0013-886x.

The Swedish species of Honalocephala Zetterstedt, 1838, are revised. Psairoptera_biumbrata Wahlberg, 1838, is designated as type species of Psairoptera Wahlberg, 1838, a junior synonym of Homalocephala. Lectotypes are designated for Homalocephala albitarsis Zet- t6rstedt, 1838, Psairoptera bimaculata Wahlberg, 1838, Psairoptera biumbrata Wahlberg, 1838, Psairoptera apiialis Wahlberg, 1838, and Psairoptera angustata Wahlberg, 1838. Both H.albitarsis-andH.biumbrataaredistinct,validspecies. PsairopterabipunctataLoew, 1854, is a junior synonym of Homalocephala albitarsis Zetterstedt, 1838 (syn. n.)' The Swedish distributions of and a key to the species are presented.

H. Andersson, Swedish Mus. Nat. Hist., clo Dept. Syst. Zool., Helgonavtigen 3, 5-223 62 Lund, Sweden.

Homalocephala Zetterstedt is currently placed in Homalocephala Zetterstedt subfamily Euxestinae of family Ulidiidae (Zaitzev Homalocephala Zetterstedt, 1837 (nomen nudum); 1984) or preferably in subfamily Ulidiinae of Zetterstedt, 1838 (type species: H. albitarsis Zetterstedt, family Otitidae (Steyskal 1987). 1838, by monotypy). (type The flies of Homalocephala are not common. PsairopteraWahlberg, 1838 species: P. biumbrata Wahlberg, 1838, by present designation). Their distribution is concentrated to Fennoscandia and NW USSR. Two species have a wider Euro- Key to Fennoscandian species pean distribution and three of the six Fennoscan- species are Holarctic. dian 1 . One pair of scutellar bristles (sc) . . f1. biseta (Frey) Psairoptera Wahlberg is currently listed as a - Twopairsofsc...... 2 junior synonym of Homalocephala (Zaitzev 2. Halteres black. Third antennal segment distinctly predominantly black. Wing 1984). Zetterstedt (1847) designated Homaloce- longer than broad. Legs as in Fig. 7 ...... H. apicalis (Wahlb.) type species of phala albitarsis Zetterstedt as - Halteres white. Third antennal segment rounded, Psairoptera. This type designation is invalid as aboutaslongasbroad ...... 3 this species was not included in the original desc- 3. l,egs completely yellowish red. Wing as in Fig. 8 H bimaculln (wahlb) ription of P sairoptera. - rrg, uiu"t. Zetterstedt's Insecta Lapponica was published 4. Face andjowls"*t ^i".rv dark. Frons narrow (Figs 5,6). Abdo- in five fascicles and Homalocephala was descri- men narrow with few short bristles. The apical wing bed in Fascicle IV, published in 1838 (Persson, spot niurow, reaching vein Cu1 (Fig. 9) . in litt.). Wahlberg had, according to the introduc- - Face *i:"*r, i" rroni *rr,"1ef#J'Jff.tE#t, tion of his paper, published as pre-print in 1838, 3). Abdomen broader and with numerous, stouter not seen Fascicle IV of Insecta Lapponica before bristles...... 5 describing Psairoptera. Dr Persson works on the 5. Basal wing spot restricted to wing field between veins problem whether Fascicle IV or the pre-print was Sc and Ry. Apical wing spot small, rounded, not reaching R+*s Gig. l0). Scutellum and ovipositor published first. Until this problem is solved, the sheath (Tz+Sr) pruinose, covered by microchaetae. valid name of the genus is Homalocephala ac- Apical part of surstyli directed outwards (Fig. cording to common use. l2)...... H. albitarsisZ.ett. 28 Hugo Andersson

ヽ彼 Ч

ヽ／ヽク／ヽルｌヽノーＬ４ ′

Figs 1 6.〃 ο″α′οε 力α′α,head,lateral(1,4,5),front(2),and dOrsal(3,6)view -1-3 〃 α′♭′′αrsノ s Zett.-4.〃わルわ″た (Wahlb)-5“`′ 〃 α″gン s″ ′α(Wahlb.). “ Revision of Swedish Homalocephala 29

Basal wing spot usually extended as brownish area covering anteiror transverse vein (t"). Apical wing spot larger and passing vein &*s Gig. 11). Scutellum o:':'and ovipositor sheath shining, without microchaetae. l* :1 ::"11i ^fiiTfi^olXiii*liiir

Homalocephala albitarsis Zetterstedt

Homalocephala albitarsis Zenerstedt, 1838:.7 49. Psairoptera bipunctata l.oew, 1854:.22, syn. n. Homalocephala bipunctata Loew: Ringdahl I93 1-195 1 Zenerstedt 1838: To, N; 1847 p. p.: T. Wahlgren 1919 p. p.: Lpl. Ringdahl 1948: Nb (as bipunctata Loew); 1931, 1951: To. Abisko, Jebrenjok.k (as bipunctata Loew). Both sexes were described from Norway, Dovre, leg. Boheman and from Sweden, Tome lappmark, Jukkasjiirvi. The Swedish specimens were bred from puparia found in rotting bark of Pinus. No syntype from Dovre is present in coll. Zetterstedt or coll. Boheman. The bred material from Jukkas- jiirvi is represented in coll. Zetterstedt in Lund by 3d39 and eight empty puparia. All the imagines are teneral and practically without dark spots on the wings but with pruinosity on the scutells and the seventh female tergites. The top specimen on a pin with two males and one empty puparium and labelled "H. albitarsis ins L. d. Psair. 2 umbrata Wbg. Juckasj" in Zetterstedt's handwriting is here designated as the lectotype of H. albitarsis Zntt. The tip of the abdomen of the lectotype specimen has been detached and the genitalia relaxed. The removed aMominal parts have been mounted on the pin in glycerol in a plastic tubing. The other 2d39 are designated as paralectotypes. All studied type specimens are conspecific. The name is valid in the binomen H omaloc ephala albitar sli Zetterstedt, I 838. In 1854, Loew described the new species Psai- roptera bipunctata ftom Poland giving the restricted dark area at Sc as the only differential character Figs 7-1 l. Homalocephala, wing. -7. H. apicalis from "albitarsis 7.ett." (= the true biumbrata (Wahlb.). -8. H. bimaculara (Wahlb.). -9. H. angustata Wahlb.), i.e. the description of bipunctata l-oew (Wahlb.). - 10. H. albitarsis Zett. - ll. H. biumbrata (wahlb.). agrees with the true albitarsis Zatt. All following authors have applied the name bipunctata Loew in that sense and Ps. bipunctata Loew. 1854, surely is ajunior synonym of H. albitarsisZntt. Vb: SkellefteAtrakten, 17.1956, I d, Ringdahl. Nb: Pi- tel,4.7.1947,29, Ringdahl; LuleA, 14.7.1919. -ld, Ring- datrl. To: Jukkasjiirvi, 3 d 3 9, Zetterstedt (lectotype and Studied material. Sweden. Sm: Hyltebruk, 28.6- paralectotypes).- 8.7.1986, 99, 13-19.7.1986, 19, t6-23.7.1987, t9,7- 15-23.6.1988, 2329.6.1988, 15.6.1988, 1d19, ld, Distribution. Known from GB, DDR, N, P, S, SF 5d19, Malaisetrap, P. & J. Ard6. Og: Gusum, ld, - and the norhwest part of European USSR. Also Wahlberg. - Vg: Tcireboda, Sisjrin, 12.6.1953, 19, S. Gauniz. - Vr: Munkfon, 1.8.1951. 19, Ringdahl. - reported from North America. 30 Hugo Andersson

〆。 ‘ ｏ３・琢 ´ ゞヽ

／

Figs 12-13.〃ο″α′οε 力αた,surstyli,posteHor view,and ventral cpandrial plate,intemal view -12 〃 α′bj′αrsJs Zett-13〃 bル″b″`′ra(Wahlb.).

Biology. Bred from rotten bark of Pinus (Zetterstedt Distribution. Known from S, SF, and the northwest 1838) and from Douglas fr stamp (Cogan & Dear part of European USSR. 1974). Biology. Unknown.

H omalocephala biumbrata (Wahlberg) H omaloc ephala bimaculata (Wahlberg) P sairoptera biumbrata Wahlberg, 1838:2 l. P sairoptera bimaculata Wahlberg, 1838:20. Homalocephala albitarsis auctt. nec Zetterstedt, 1 838:749. Wahlberg 1838: Og, Gusum. Zenerstedt 1847: Jii, Fax- Wahlberg 1.838: Og, Up, Jii. Zenerstedt 1847: Og. Vg. Ja, tilven and Siiter. Watrlgren l9l9: Og. Ja. Faxiilven; Ostersund, Villam sdter (x albitarsis Zntt.). The female was described from material taken ra- Wahlgren l9l9: Og - Lpl (incl. albitarsisZrtt.). Ringdahl 1935: Sk; 1948: Sk, Sm, Jii; 1951: ld (as albitarsis 7ntt.). rely in Sweden, Ostergcitland, Gusum. In coll. Wahlberg in Swedish Museum of Natural History, Both sexes were described from material from Swe- Stockhohn, there are 4d I I I, labelled with a small, den, Uppland, Stockholm, Haga, leg. Boheman, light green rhombic tag indicating the coastal area from Osterg

H omalocephala apicalis (Wahlberg) Biology. Unknown.

P sairoptera apicalis Wahlberg, 1838:21. Acknowledgements: I wish to thank Roy Daniels- Wahlberg 1838: Og. Zetterste.dt 1847: Og. Up. Holrnia. son, Lund, and Per lnge Persson, Stockholm, for Fi, UleAborg. WaUgren 1919: Og, Up. Ringdahl 1931:To; loan of material from the museum collections. 1948: Ol; 1951: Og, Up, Lpl. Both sexes were descrihd from a small material ("rarior") from Sweden. Ostergdtland, Cusum. ln References coll. Wahlberg there are 1l from Gusum (light d9I Cogan, B. H. & Dear, J. P. 1974. Additions and correc- green rhombic tag); in coll. Boheman 167I from tions to the list of British Acalypuatae Diptera. - Ent. the type area ("O. G.", "P. Wg"); in coll. Zetterstedt mon. Mag. 1 l0: 173-181. I d I 9; in coll. Roth 1d and in coll. Wallengren Frey, R. 1908. Mitteilungen tiber finnliindischen Dipte- ren. Acta Soc. Fauna Flora fenn. 31: l-24. I all from Gusum, leg. Wahlberg. I have desig- - 9, Perry, I. & Stubbs, A. E. 1978. Dead wood and sap runs. nated a male in coll. Wahlberg as the lectotype of - In. Stubbs & Chandler: A dipterists handbook. - P. apicalis Wahlberg and labelled it accordingly. The amateur entomologist 15: 65J3. The name is valid in the binomen Homalocephala Ringdahl, O. l93l.Insektfaunan inom Abisko National- park. III:6 Flugor-Diptera Brachycera. K. Sv. Vet. apicalis (Wahlberg, 1838). - Akad. Skr. i naturskyddsiirenden l8: 1-32. Studied material. Sweden. Sm: Hyltebruk, 7-15.6.1988, - 1935. Fyndorter f6r sydsvenska Dipera. - Ent. Tidskr. 1d; (Malaise-trap), q, & J. Ardd; Skillingaryd, 18.7.1940. 56:201-203. flugor. Ent. Tidskr. I 9, A. Jansson. - Og: Gusum, 20d 18I, Wahlberg. - - 1948. Nya fynd av holometopa - - Up: The coastal area (gilt rhombic tag), 1 I, Wahlberg; 69:14. Stockholm, 6.7.1922, 19; Ringdahl. To: Abisko. - 1951. Flugor frAn Lapplands, Jiimtlands och Hiirjeda- (Diptera 6.1 .1922, 1 d, Ringdahl. Norge, without- locality, July lens fjiilltrakter Brachycera). - Opusc. ent. 1913, ld; Ringdatrl. - 16:113-186. Steyskal, G. C. 1965. Otitidae. - In: Stone et al.: A Distribution. Known from N, S, SF, and the north- catalog of the Diptera north of Mexico. - USDA Agr. west part of European USSR. North America. Handbook No. 276: 642454. 1987. Otitidae. In: Manual of Nearctic Diptera 2: Biology. The species has been reared from sap of - - 799-808. Agriculture Canada, Monograph No. 28. Pinus monticola in USA, Montana (Steyskal 1965). Wahlberg, P. F. 1838. Bidrag till svenska diptemas kiinnedom. Stockholm (P. A. Norstedt & S6ner). H omalocephala angustata (Wahlberg) - 1839. Bidrag till svenska diptemas kiinnedom. - K. Vet. Acad. Handl. 1838: 1-23. P sairoptera angustata Wahlberg, 1838:22. Wahlgren, E. 1919. TvAvingar. Diptera Cyclorapha Wahlbe.rg 1838: Og. Zetterstedt 1847. 1860: Og. Wahlgren Schizophora. Fam. 13-20. - Svensk insektfauna 1919: Og. I 1:22. Uppsala. 32 Hugo Andersson

Zaitzev, V. F. 1984. Ulidiidae. - In: Soos & Papp: Cata- Sammanfattning logue of palaearctic Diptera. 9: 5946. Zetterstedt, J. W. 1837. Familiarum, generum et spe- De fem svenska artema i sliiktet Homalocephala cierum dipterorum, in Fauna insectorum Lapponica Zetterstedt (Otitidae) revideras. En bestiimnings- descriptorum. Isis von Oken. 1837: 2847. Leipzig. - ges frir de Fennoskandiska artema. Fyra av - 1838. Insecta Lapponica III, Diptera. Pp. 485-868. tabell Leipzig. artema iir vitt spridda i Sverige, med.an H. angus- - 1847, 1860. Diptera Scandinaviae. Vl 2363-2580, tata (Wahlberg) endast iir kiind fr6n Ostergdtland. XIV: 6191-6609. Lektotyper har utsetts och en ny synonym ges.

Om tre svarskittbara spetsvivlar

Dieckmann, L. 1989. Die mitteleuropiiischen Arten der Apion (Catapion) seniculus-Gruppe (Coleoptera, Cur- culionidae). Beitriige zur Entomologie 39(2): 23'7-253.

Vivelspecialisten Lothar Dieckmann, Eberswalde, hann att fcire sin diid i tryck f6 se sitt tio6riga arbete om de centraleuropeiska Apion-artema i seniculus-gruppen (usl. Catapion). Bakom denna ar- tikel ligger en entregen strevan att inf