Taxonomic study of the genus Cephalispa Malloch of Japan (Diptera: Muscidae)
Author
Yoshizawa, Satoshi
Author
Tachi, Takuji
text
Zootaxa
2016
4132
4
540
550
journal article
10.11646/zootaxa.4132.4.5
3f9d586b-a0bd-42c8-baee-b6068073c70d
1175-5326
262974
186BF266-6D45-4CA5-AA36-C3822F92AB3A
Cephalispa kudoi
sp. nov.
(
Figs 1‒6
,
25
,
28
,
30
)
Description.
Male and female.
Head
. First flagellomere cream yellow in basal 1/3 and yellowish brown in apical 2/3; palpus cream yellow; labella yellow. Gena 0.09‒0.11 of eye height.
Thorax
. Anterior and posterior spiracles yellow. Two‒three postsutural intra-alar setae.
Abdomen
. Whitish yellow in ground color with blackish brown pruinosity medially. Male 5th sternite (
Figs 1‒2
) nearly rectangular in ventral view, round and curved ventrally at posterior apex in lateral view with large ridge internally.
Male terminalia
(
Figs 3‒6
). Surstylus nearly straight and pointed apically with some setae on entire length in lateral view, slightly narrow at middle in dorsal view; bacilliform sclerite strongly reduced; hypandrium nearly triangular in lateral view; postgonite broad, curved ventrally at middle and pointed at apex; phallus nearly straight, strongly notched at middle, hook-like apically in lateral view, asymmetric at apical half with membranous area in dorsal view.
FIGURES 1–6.
Male 5th sternite and terminalia of
Cephalispa kudoi
sp. nov.
:
1.
Male 5th sternite in ventral view (setae omitted on the left side).
2.
Same in lateral view (setae omitted).
3.
Epandrium, surstylus and cerci in lateral view.
4.
Same in dorsal view (setae omitted on the left side).
5.
Hypandrium, postgonite and phallus in lateral view.
6.
Distiphallus in dorsal view. (Abbreviations: cerc: cerci; epand: epandrium; hypand: hypandrium; pgt: postgonite; ph: phallus; sur: surstylus). (Scale bars = 0.2 mm).
Female terminalia
(
Fig. 25
). Seventh sternite strongly reduced.
Body length
. 5.5‒7.0 mm (n = 53).
Type
material examined.
Holotype
: Male, Onoaida, Yakushima town, Yakushima Is., Kumage-gun, Kagoshima pref.,
Japan
[
N 30°14’39”
/
E 130°33’30”
],
9. III. 2013
, S. Yoshizawa (
BLKU
).
Paratypes
:
JAPAN
: Five males and
27 females
, same data as
holotype
(
BLKU
);
1 male
and
7 females
, same locality and collector as
holotype
,
7. III. 2013
(
BLKU
);
1 female
, Tenokuchi, Yakushima town, Yakushima Is., Kumage-gun, Kagoshima pref. [
N 30°17’29”
/
E 130°37’34”
],
4. VI. 2015
, S. Yoshizawa (
BLKU
);
2 males
and
2 females
, Mt. Higo, Sumiyo town, Amami city, Amami-ōshima Is., Kagoshima pref. [
N 28°12’47”
/
E 129°22’49”
],
4. VII. 2013
, S. Yoshizawa (
BLKU
);
1 female
, Mt. Yonaha, Azaokuma, Kunigami Vil., Kunigami-gun, Okinawa Is., Okinawa pref.,
8. IV. 1953
, T. Shiraki (
NIAES
);
1 male
, Inoda, Ishigaki city, Ishigakijima Is., Okinawa pref.,
27. II. 1953
, T. Shiraki (
NIAES
);
1 male
and
2 females
, Siramizu, Ishigaki city, Ishigakijima Is., Okinawa pref. [
N 24°25’19”
/
E 124°9’50”
],
31. V. 2012
, S. Yoshizawa (
BLKU
);
1 male
and
1 female
, Urauchi river, Urauchi, Taketomi town, Iriomotejima Is., Yaeyama-gun, Okinawa pref. [
N 24°24’15”
/
E 123°46’56”
],
22. VI. 2011
, S. Yoshizawa (
BLKU
);
1 female
, Urauchi, Taketomi town, Iriomotejima Is., Yaeyama-gun, Okinawa pref. [
N 24°24’10”
/
E 123°46’42”
],
24. V. 2012
, S. Yoshizawa (
BLKU
).
Distribution.
Japan
(Yakushima Is., Amami-Oshima Is., Okinawa Is., Ishigakijima Is., Iriomotejima Is.).
Bionomics.
This is a forest-inhabiting species.
Etymology.
The specific epithet is taken from Mr. Yuta Kudo, who supported us for material collecting in Yakushima Is.
Remarks.
This species is easily distinguished from the other Japanese species by having the asymmetric phallus and greatly reduced female abdominal 7th sternite (
Figs 6
,
25
). This species is thought to be close to Chinese species,
C. curtrata
Cui & Xue, 1995
and
C. breviabdominis
Cui & Xue, 1995
by having the asymmetric phallus (
Cui
et al
., 1995
). It is distinguishable from them by the narrowed surstylus at middle in dorsal view (
Fig. 4
).