Dicranomyia (Erostrata) globulithorax Alexander, 1924

Kato, Daichi, Tachi, Takuji & Gelhaus, Jon, 2018, Revision of the subgenus Dicranomyia (Erostrata) Savchenko, 1976 (Diptera, Limoniidae) of Japan, Zootaxa 4441 (1), pp. 181-194: 184-186

publication ID

https://doi.org/10.11646/zootaxa.4441.1.11

publication LSID

lsid:zoobank.org:pub:E8507163-0F19-4BF2-8917-2E6C2C7A53A2

persistent identifier

http://treatment.plazi.org/id/BD535E3E-FFAA-B66A-FF6E-80D8FB83FE8A

treatment provided by

Plazi

scientific name

Dicranomyia (Erostrata) globulithorax Alexander, 1924
status

 

Dicranomyia (Erostrata) globulithorax Alexander, 1924 

( Figs. 7 View Figure , 36 View Figure , 41 View Figure )

Dicranomyia globulithorax Alexander, 1924: 547  . Type locality: Japan, Hokkaido, Chitose-shi, Shikotsu ; 

Limonia (Limonia) globithorax globulithorax: Alexander, 1955: 278  ;

Dicranomyia (Erostrata) globithorax globulithorax: Savchenko & Krivolutskaya, 1976: 132  ; Savchenko, 1983: 138; Savchenko, 1989: 307; Savchenko et al, 1992: 342; Nakamura et al, 2014: 41; Oosterbroek, 2018.

Specimens examined: Holotype, male, JAPAN, Hokkaido, Shikotsu , 27.IX.1922, T. Esaki ( USNMAbout USNM)  . Paratype, male, JAPAN: [Hokkaido], L. Shikotsu, 27.IX.1922, T. Esaki ( USNMAbout USNM)  .

Diagnosis. General coloration ( Fig. 36 View Figure ) brown to dark brown. Head blackish; palpus one segmented. Abdomen dark brown. Male genitalia with tergite 9 bearing a pair of rounded lobes on posterior margin (as in Fig. 4 View Figure ); gonostylus ( Fig. 7 View Figure ) concaved on distal 1/6 of inner margin, covered with strong setae at tip.

Description. Male. Body length 4.8 mm. Wing length 6.2 mm.

Head. Dark brown. Antenna dark brown, pedicel almost as wide as basal flagellomeres, flagellar segments with distinct pale pubescence; palpus oval, one segmented.

Thorax. Brown, lateral sides of postpronotum and anepimeron near wing base weakly paler. Wing blackish tinged. Legs brown, coxae, trochanters, and base of femora paler. Halter brown.

Abdomen. Brown, sternite 7 with a small, conical internal sac on posterior margin (as in Fig. 10 View Figure ). Male genitalia with tergite 9 oval, bearing a pair of rounded lobes on posterior margin, each lobe separated by wide U- or V-shaped notch, longitudinal internal ridge distinct on middle of tergite 9 (as in Fig. 4 View Figure ); gonocoxite cylindrical, about as long as width of tergite 9, ventromesal lobe finger-shaped, about 1/3 as long as gonocoxite and 1.5–2 times as long as width (as in Fig. 4 View Figure ); gonostylus ( Fig. 7 View Figure ) slightly shorter than gonocoxite and slightly wider on distal half than basal half, apex with outer edge produced about 1/5 as long as whole length of gonostylus, mesal surface of gonostylus weakly sclerotized and darkened, covered with strong setae, outer surface of gonostylus with a small protuberance bearing two setae near base; paramere (as in Figs. 5–6 View Figure ) with mesal-apical lobe slender, pointed at tip, lateral part of paramere produced into ribbon-like plate, curled laterally and ventrally, the plate 1/4 as long as width of paramere in lateral view; aedeagus (as in Fig. 5 View Figure ) cylindrical, narrowed near tip; tip shortly bilobed, directed ventrally.

Female. Not examined.

Distribution. Japan (Hokkaido, Shikoku ( Fig. 41 View Figure )), Russian Far East (Primorskiy kray, Kuril islands).

Remarks. As mentioned in the remark of D. globithorax  , D. globithorax globulithorax  is elevated to species rank based on the distinct differences in their male genitalia. This species is also somewhat similar to a Taiwanese species, D. (E.) melas ( Alexander, 1934)  , but is differentiated from it by the following male genital structures: male genitalia (as in Figs. 4–6 View Figure ) with ventromesal lobe of gonocoxite longer, about 1.5–2 times as long as width (about as long as width in D. melas  ); mesal-apical lobe of paramere without a ridge-like short extension near base of dorsal margin (with a ridge-like short extension near base of dorsal margin D. melas  ).

USNM

Smithsonian Institution, National Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Limoniidae

Genus

Dicranomyia

Loc

Dicranomyia (Erostrata) globulithorax Alexander, 1924

Kato, Daichi, Tachi, Takuji & Gelhaus, Jon 2018

2018
Loc

Dicranomyia globulithorax

: 547

Loc

Limonia (Limonia) globithorax globulithorax:

: 278

Loc

Dicranomyia (Erostrata) globithorax globulithorax: Savchenko & Krivolutskaya, 1976 : 132

: 132 : 138 : 307 : 342 : 41