Revision of the subgenus Dicranomyia (Erostrata) Savchenko, 1976 (Diptera, Limoniidae) of Japan
Kato, Daichi
Tachi, Takuji
Gelhaus, Jon
Zootaxa
2018
2018-06-26
4441
1
181
194
8GZJV
Kato & Tachi & Gelhaus, 2018
Kato & Tachi & Gelhaus
2018
[151,568,1555,1582]
Insecta
Limoniidae
Dicranomyia
GBIF
Animalia
Diptera
6
187
Arthropoda
species
submelas
sp. nov.
Erostrata
Specimensexamined: Holotypemale, JAPAN, Fukuoka, Fukuoka-shi, Sawara-ku, Itaya, Mt. Sefuri-san, 23.VIII, 2015, D. Kato( BLKU). Paratypes: JAPAN: [ Honshu] 1 male, Tochigi, Nikko-shi, 8.IX.2011, D. Kato( BLKU); 1 male, Echigo( Niitaga), Kurokawa, 18.VIII.1954, K. Baba( USNM/ identified as Limonia globulithoraxby Alexander); 1 male, Aichi, Sitara-chô, Tamine, Mt. Takanosu-yama, 17.VIII.2014, D. Kato( BLKU); 1 female, Gifu, Nakatsugawa-shi, Kashimo, Nishimata-dani Valley, 7.VIII.2015, D. Kato( BLKU); 1 female, Nara, Kamikitayama-mura, Nishihara, 23.VIII.2015, D. Kato( BLKU); 1 male, Tottori, Yazu-chô, Mt. Ôgino-sen, 17.IX.2014, D. Kato( BLKU); 1 male, Okayama, Maniwa-shi, Hiruzen-Shimotokuyama, 11.VIII.2015, D. Kato( BLKU); 1 male, Hiroshima, Hatsukaichi-shi, Yoshiwa, Mt. Misaka-yama, 2.IX.2015, D. Kato( BLKU); [ Shikoku] 1 male, Tokushima, Miyoshi-shi, Higashiiya-Ochiai, near Matsuogawa Dam, 10.VIII.2015, D. Kato( BLKU); [ Kyushu] 1 female, same data as holotype except 23.VIII.2015; 3 males, same data as previous except 5.IX.2015; 2 malessame data as previous except 15.IX.2015; 1 male, same data as previous except 27.VIII.2016; 1 male, Ôita, Taketa-shi, Imamizu-tozanguchi, 10.IX.2016, T. Mishima( BLKU); 1 male, Kumamoto, Yatsushiro-shi, Izumimachi-Momiki, Nigakobe-gawa River, 31.VII.2016, D. Kato( BLKU).
Diagnosis.General coloration ( Fig. 38) brown to dark brown. Head blackish; palpus ( Fig. 1) one segmented. Abdomen dark brown. Male genitalia ( Fig. 20) with tergite 9 produced posteriorly into a pair of rounded lobes; gonostylus strongly concaved on distal 1/3 of inner margin, with a row of strong setae along concaved margin. Ovipositor ( Figs. 23–25) with cercus weakly curved dorsally; hypogynial valve long, about 1.9 times as long as sternite 8; furca curled inward along lateral margins and long, extending far beyond base of cercus.
Description.Male. Body length 4.0– 5.2 mm. Wing length 4.6–5.8 mm. Head.Dark brown to black; antenna ( Fig. 1) brown to dark brown, pedicel about as wide as basal flagellomeres, flagellum with distinct pale pubescence; palpus ( Fig. 1) oval, one segmented. Thorax.Brown to dark brown, postpronotum on lateral sides and anepimeron near wing base weakly paler, antepronotum, pronotum, and anepisternum sometimes slightly darkened. Wing tinged with black. Legs dark brown, coxae, trochanters, and base of femora slightly paler. Halter dark brown. FIGURES 20–25.Male genitalia and female ovipositor of Dicranomyia( Erostrata) submelas sp. nov.20: Male genitalia (paratype, Japan, Aichi) in dorsal view; 21: Internal structure of male genitalia in dorsal view; 22: Paramere of male genitalia in outer view; 23: Female ovipositor (paratype, Japan, Fukuoka) in lateral view; 24: Sternite 8 and hypogynial valve in ventral view; 25: Furca in ventral view. Scale bars = 0.1 mm. Abdomen.Dark brown, sternite 7 with a long-conical, membranous internal sac on posterior end. Male genitalia ( Fig. 20) with tergite 9 squarish with rounded corners, bearing a pair of rounded lobes on posterior margin, each lobe separated by wide U- or V-shaped notch, disc on tergite 9 with a longitudinal internal ridge at middle; gonocoxite cylindrical, about as long as width of tergite 9, ventromesal lobe large and truncated at tip, about 1/4 as long as gonocoxite and about as long as width; gonostylus about as long as gonocoxite, widest at basal 2/3, distal 1/3 strongly concaved posteromesally with a row of strong setae along concaved margin, outer surface of gonostylus with a small protuberance bearing two setae near base; paramere ( Figs. 21–22) with mesal-apical lobe slender, curved dorsomedially and pointed at tip, with a ridge-like short extension near base of dorsal margin, lateral part of paramere strongly produced into ribbon-like plate, curled laterally and ventrally, the plate longer than 1/3 of width of paramere; aedeagus ( Fig. 21) cylindrical, narrowed near tip, tip bilobed and slightly widened, directed ventrally. Female. Body length 4.6–4.9 mm. Wing length 4.9–5.5 mm. Almost same as male except terminalia. Ovipositor ( Figs. 23–25) brown to dark brown; tergite 9 more acute on lateral angles than the other species; tergite 10 inlateral view narrow, about half height of tergite 8, tapered near tip, with two pairs of long setae on posterior margin; cercus longer than sternite 8, weakly curved dorsally on distal half, reaching at level of tip of hypogynial valve, ventral margin with weak setae on basal 1/3; sternite 8 roughly square with rounded corners, slightly longer than width, with a pair of distinct internal ridge; hypogynial valve long, about 1.9 times as long as sternite 8, tip subacute, basal part of the valve as high as tergite 10 inlateral view; furca long, about 2.3 as long as width, pointed at setigerous tip, extending far beyond base of cercus, lateral margin bent medially.
Distribution. Japan(Honshu, Shikoku, Kyushu ( Fig. 42)).
Etymology.The specific epithet refers to the similarity to a Taiwanese species, D. melas.
Remarks.This species is somewhat similar to D. globulithorax Alexander, 1924, but differing from it in the following characters: male genitalia with ventromesal lobe of gonocoxite stout and truncated at tip ( Fig. 20), while gradually narrowed and rounded at tip in D. globulithorax; gonostylus emarginated on distal 1/3 of inner apical edge ( Fig. 20), while emarginated on distal 1/6 of inner apical edge in D. globulithorax( Fig. 7); mesal-apical lobe of paramere with a ridge-like short extension along outer margin near base ( Fig. 22), while without a ridge-like short extension in D. globulithorax(as in Fig. 6). In addition, another similar species, D. melas, is differentiated from this species by the following characters: gonostylus more shallowly concaved at inner apical edge, the area 1/ 5 as long as gonostylus, with brush of shorter setae at tip, whereas apical 1/3 emarginated, with brush of longer setae at tip in this species ( Fig. 20)).
1851456495
23. VIII
BLKU
D. Kato
Japan
Specimens
Mt. Sefuri-san
Itaya
6
187
1
Fukuoka
holotype
1851456540
[429,1410,1699,1724]
2011-09-08
BLKU
D. Kato
Japan
Nikko-shi
Honshu
6
187
1
1
Tochigi
paratype
1851456497
1954-08-18
USNM
K. Baba & Alexander
Japan
Echigo
Kurokawa
Niitaga
6
187
1
1
Tochigi
paratype
1851456536
[295,1313,1771,1796]
2014-08-17
BLKU
D. Kato
Japan
Sitara-cho
Mt. Takanosu-yama
Tamine
6
187
1
1
Aichi
paratype
1851456604
2015-08-07
BLKU
D. Kato
Japan
Nakatsugawa-shi
Nishimata-dani Valley
Kashimo
6
187
1
1
Gifu
paratype
1851456500
2015-08-23
BLKU
D. Kato
Japan
Nishihara
Kamikitayama-mura
6
187
1
1
Nara
paratype
1851456602
2014-09-17
BLKU
D. Kato
Japan
Mt. Ogino-sen
Yazu-cho
6
187
1
1
Tottori
paratype
1851456535
2015-08-11
BLKU
D. Kato
Japan
Hiruzen-Shimotokuyama
Maniwa-shi
6
187
1
1
Okayama
paratype
1851456542
[260,1143,1915,1940]
2015-09-02
Japan
Hatsukaichi-shi
Mt. Misaka-yama
Yoshiwa
6
187
1
1
Hiroshima
paratype
1851456395
2015-08-10
BLKU
Japan
Kato
Miyoshi-shi
Shikoku
6
187
1
1
Tokushima
paratype
1851456391
2015-08-23
BLKU
D. Kato
Japan
Specimens
Kyushu
Kato
6
187
1
1
Fukuoka
paratype
1851456605
[865,1411,1987,2012]
2015-09-05
BLKU
D. Kato
Japan
Specimens
Kyushu
Kato
6
187
3
3
Fukuoka
paratype
1851456607
2015-09-15
BLKU
D. Kato
Japan
Specimens
7
188
Kyushu
Kato
6
187
2
2
Fukuoka
paratype
1851456529
[702,1278,151,176]
2016-08-27
BLKU
D. Kato
Japan
Specimens
Kyushu
Kato
7
188
1
1
Fukuoka
paratype
1851456541
2016-09-10
BLKU
T. Mishima
Japan
Imamizu-tozanguchi
Taketa-shi
7
188
1
1
Oita
paratype
1851456609
2016-07-31
BLKU
D. Kato
Japan
Yatsushiro-shi
Nigakobe-gawa River
Izumimachi-Momiki
7
188
1
1
Kumamoto
paratype