Table Of ContentElytra,Tokyo,38(1):29(cid:2)34,May31,2010
Occurrence of Cryptarcha kapfereri R:>II:G in Japan, with Notes on
Cryptarcha inhalita R:>II:G (Coleoptera, Nitidulidae)
Sadatomo HISAMATSU
EntomologicalLaboratory,TheUnitedGraduateSchoolofAgriculturalSciences,
EhimeUniversity,5(cid:2)7,Tarumi3-chˆome,Matsuyama,790(cid:2)8566Japan
E-mail:[email protected]
Abstract AnitidulidspeciescurrentlytreatedasCryptarchainhalitaR:>II:G,
by H>H6HB6IHJ (1985) and many other Japanese coleopterists, is revealed to be a
misidentification of Cryptarcha kapfereri R:>II:G. The distinction between them is
discussed with illustrations of male genitalia and other important diagnosis of each
species, and is shown in the key to the Japanese species of the genus Cryptarcha.
CryptarchakapfereriR:>II:GisrecordedforthefirsttimefromJapan.
The identity of “Cryptarcha inhalita R:>II:G, 1884” is well known for many
Japanese coleopterists, because this species is iullustrated in the most popular Japanese
illustrated book, “The Coleoptra of Japan in Color, Vol. III” by Sadanari H>H6B6IHJ
(1985). In the course of my study on the nitidulid fauna of Japan, I noticed that
Cryptarcha inhalita R:>II:G (sensu H>H6B6IHJ, 1985) was a misidentification of
CryptarchakapfereriR:>II:G,1913,whichwasdescribedfromFarEasternSiberia,and
unknownfromanyotherareasbesidesthetypelocality. Asaconsequenceofexamina-
tion of Sadanari H>H6B6IHJ’s nitidulid collection preserved in Ehime University
Museum (EUM), the specimens which should be identified as the true Cryptarcha
kapfereriR:>II:Gwerealreadycollected in several localities in Japan, but regarded as
an intraspecific variation of C. strigata (F67G>8>JH).
Inthefollowinglines,I will provide diagnostic characters of both the species with
their salient figures, and a key to the species of Japanese Cryptarcha. The species,
Cryptarcha kapfereri R:>II:G, is recorded here for the first time from Japan.
Cryptarcha kapfereri R:>II:G, 1913
[Japanesename:Chibi-ko’oni-keshikisui]
(Figs.1,3,5,7,9,11)
Cryptarcha(Cryptarchula)KapfereriR:>II:G,1913:123(typelocality:Sotka-Gora,Ostsibirien).
Cryptarchakapfereri:K>G:?IH=J@,1992:203,pl.96,figs.6(cid:2)8[inkey,figured].(cid:3)J:A´>C:@&AJ9>H>D,2007:
468[catalogued].
Cryptarchainhalita:H>H6B6IHJ,1985:195,pl.31,fig.27[inkey,photo],necCryptarchainhalitaR:>II:G,1884.
30 SadatomoH>H6B6IHJ
Figs.1(cid:2)4. Cryptarchaspp.(cid:3)(cid:3)1,3,Cryptarcha kapfereriR:>II:G((cid:2),Chˆojabaru,«OitaPref.);2,4,
Cryptarcha inhalitaR:>II:G((cid:2),Takamine,kutchan,Hokkaido).(cid:3)(cid:3)1,2,Dorsalhabitus;3,4,
scutellum.
Diagnosis. Length 2.1(cid:2)2.7mm. Body brown. Each elytron always with two
yellowishmarkings(Fig.11),whicharerarelyconnectedwitheachother. Elytraabout
as long as wide, conjointly 0.96(cid:2)1.04 times as long as wide (n(cid:2)5); pubescence dual,
arrangedinthesamemannerasthoseoftheprecedingspecies. Subsuturalline(Fig.11)
moderateinlength,0.63(cid:2)0.67timesaslongaselytrallength(n(cid:2)5). Scutellum(Fig.3)
moderate in size, distinctly visible from above. Male genitalia with tegmen (Fig. 5)
gently narrowing in apical 3/7 to widely truncated apex; to the contrary, median lobe
OccurrenceofCryptarchakapfereriinJapan 31
(Fig. 7) abruptly narrowing to pointed apex in apical 2/7. Prosternal process (Fig. 9)
subparallel-sided, apical margin truncated. Abdominal sternite VII of female simple.
Specimens examined. JAPAN: [HOKKAIDO] 1 ex., Sapporo, 3(cid:2)VIII(cid:2)1967, M.
TDBD@JC>leg. [AOMORI]6exs.,Tsubai,Fukaura-chˆo,30(cid:2)VIII(cid:2)2007,A.&R.A7:
leg. [GUNMA]1(cid:2),Mt.Tanigawa,29(cid:2)VIII(cid:2)1963, S. H>H6B6IHJ leg. [NAGANO]
1ex.,Karuizawa,23(cid:2)VII(cid:2)1951,S.H>H6B6IHJleg.[GIFU]2exs.,Mt.Kinka,17(cid:2)VI(cid:2)
1947,D.M6IHJH>I6leg.;1ex.,10(cid:2)VI(cid:2)1947,K.O=76N6H=>leg.;1ex.,Mt.Kinkazan,
2(cid:2)VI(cid:2)1973, M. S6@6> leg.; 1 ex., Sakaguchi, 4(cid:2)VI(cid:2)1973, same collector as the preced-
ing. [SHIMANE] 1 ex., Hoki-Daisen, 17(cid:2)VII(cid:2)1933, H. AG6@> leg. [EHIME] 1 ex.,
Saragamine,22(cid:2)VIII(cid:2)1954,M.M>N6I6@:leg.;1ex.,samelocalityandcollectorasthe
preceding, 11(cid:2)VII(cid:2)1955. [TSUSHIMA Is.] 2 exs., Izuhara, Nagasaki Pref., 16(cid:2)19(cid:2)
VII(cid:2)1960, M. S6IˆD leg. [«OITA] 11 exs., Chˆojabaru, Kuju-chˆo, 11(cid:2)VII(cid:2)1968, S.
K>CDH=>I6leg.;1ex.,HandaHighlands,Mt.Kujˆu,25(cid:2)V(cid:2)1975,H.IG>:leg. [KUMA-
MOTO] 1 ex., Mt. Ichifusa, 3(cid:2)VIII(cid:2)1974, M. S6@6> leg.
Distribution. Russia (Far East) and Japan (new record).
Notes. Aswasmentionedabove,manyJapaneseauthorshaveregardedthisspecies
as“Cryptarchainhalita”. Cryptarchakapferericorrectlyidentifiedis first recorded here
from Japan.
Cryptarcha inhalita R:>II:G, 1884
[Japanesename:Chairo-ko’oni-keshikisui]
(Figs.2,4,6,8,10,12)
Cryptarcha inhalitaR:>II:G,1884:269[inkey] (type locality:FukahoribeiNagasaki,Japan);1985a:79
[described];1985b:175[listed];(cid:3)K>G:?IH=J@,1987:69,pl.2,figs.5(cid:2)9[redescribed,figured,inkey];
1992:203,pl.96,figs.1(cid:2)5[inkey,figured];(cid:3)J:A´>C:@&AJ9>H>D,2007:468[catalogued].
Diagnosis. Length 2.1(cid:2)3.8mm. Body brown, antennae and legs lighter. Each
elytron usually with two vague, dark-brown markings (Fig. 12), of which one is very
elongated,situatedonthemiddle,theotherisoval,situatedattheoutsideoftheformer,
though these markings occasionally disappeared completely. Elytra about as long as
wide,conjointly0.96(cid:2)1.00timesaslongaswide (n(cid:3)5); pubescence dual: suberect and
setulose ones forming distinct rows, and fine and long ones occuring between setae.
Subsutural line (Fig. 12) long, 0.71(cid:2)0.84 times as long as elytral length (n(cid:3)5).
Scutellum (Fig. 4) small, scarcely visible from above. Prosternal process (Fig. 10)
moderately dilated to vaguely emarginated apex. Male genitalia with tegmen (Fig. 6)
definitely narrowing to rounded apex in apical 3/7; median lobe (Fig. 8) indefinitely
narrowing to apex in apical 2/7. Abdominal sternite VII of female simple.
Specimensexamined. RUSSIA:3exs.,Vladivostok,PrimorskijKray, 5(cid:2)VII(cid:2)1997,
A. S6>ID leg. JAPAN: [HOKKAIDO] 6 exs., Mt. Esan, 16(cid:2)VII(cid:2)1970, M. S6@6> leg.;
1(cid:2), 1(cid:3), Takamine, kutchan-chˆo, Abuta-gun, 27(cid:2)V(cid:2)3(cid:2)VI(cid:2)2009, banana trap, A.
32 SadatomoH>H6B6IHJ
Figs.5(cid:2)12. Body parts of Cryptarcha spp.(cid:3)(cid:3)5, 7, 9, 11, Cryptarcha kapfereri R:>II:G
(Chˆojabaru,«Oita Pref.); 6,8,10,12,Cryptarcha inhalitaR:>II:G(6, 8,10:Takamine,kutchan,
Hokkaido; 12: Primorskij Kray, Russia). 5, 6, Tegmen; 7, 8, median lobe; 9, 10, prosternal
process;11,12,leftelytron.
K6H=>O6@> leg.; 1 ex., same locality and collector as the preceding, 20(cid:2)24(cid:2)VI(cid:2)2009.
[AOMORI]1ex.,Tsubai,Fukaura-chˆo,30(cid:2)VIII(cid:2)2007,A.&R.A7:leg.[NIIGATA]
2exs.,Kurokawa,12(cid:2)VIII(cid:2)1977,K.B676leg.[SAITAMA]1ex.,Urawa,17(cid:2)V(cid:2)1953,
H. K6?>BJG6 leg. [EHIME] 1 ex., Matsuyama City, 28(cid:2)V(cid:2)1973, K. IID leg. [FU-
KUOKA] 1 ex., Jˆoyama, Munakata City, 9(cid:2)VI(cid:2)1985, K. K>9D leg. [KUMAMOTO]
Kˆoshi-machi, Kikuchi-gun, 9(cid:2)V(cid:2)1987, K. FJ?>I6 leg. [MIYAZAKI] 1 ex., Mt. Tak-
achiho(cid:2)Mt. Kirishima, 16(cid:2)VII(cid:2)1938, H. AG6@> leg.
Distribution. Russia (Far East), China (Shaanxi), Japan and Oriental Region.
OccurrenceofCryptarchakapfereriinJapan 33
Notes. In Sadanari H>H6B6IHJ’s nitidulid collection of EUM, some specimens of
C.inhalitawerefoundinaboxminglingamongthespecimens sorted out as C. strigata
(F67G>8>JH). It is presumed that he erroneously recognized C. inhalita as one of the
intraspecific variation of C. strigata.
Japanese species of Cryptarcha including these two species is keyed as follows:
Key to the Japanese Species of the Genus Cryptarcha
1. Elytra with rows of hairs. (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)2
(cid:2) Elytra without rows of hairs.(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)5
2. Elytrausuallywithinfuscatedarkmarkings,thoughoccasionallywanting. Scutel-
lum invisible from dorsal view. (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)C. inhalita R:>II:G
(cid:2) Elytra usually with distinct light markings, though rarely wanting. Scutellum
visible from dorsal view. (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)3
3. Prosternal process strongly dilated, with apex emarginated. Each elytron with or
without yellowish markings, humeral one of which is 3-branched. Abdominal
sternite VII of female with circular, impunctate area. (cid:2)C. strigata (F67G>8>JH)
(cid:2) Prosternalprocessslightlydilatedorparallel-sided,withapextruncatedorvaguely
emarginate. Eachelytronalwayswithdistinctyellowishmarkings,withhumeral
onenot3-branched. AbdominalsterniteVIIoffemalewithoutcircular,impunc-
tate area. (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)4
4. Elytra 1.00(cid:3)1.10 times as long as wide; each elytron with 6 oblong yellowish spots
(posterior 3 spots rarely connected with one another). (cid:2)C. maculata R:>II:G
(cid:2) Elytra 0.96(cid:3)1.04 times as long as wide; each elytron with 2 yellowish spots at the
most. (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)C. kapfereri R:>II:G
5. Dorsalsurfaceofbodyfeeblyshiny. AbdominalsterniteVIIoffemalewithadeep,
circular impression at the middle. Distribution: Japan (Amami-«Oshima Is. and
Okinawa Is.). (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)C. okinawensis H>H6B6IHJ
(cid:2) Dorsal surface of body strongly shiny. Abdominal sternite VII of female with a
longitudinal carination at the middle. Distribution: Japan (Honshˆu, Shikoku,
Kyˆushˆu), Russia (Far East), China (Fujian, Hebei, Yunnan), Taiwan and
Korea. (cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)(cid:2)C. lewisi R:>II:G
Acknowledgments
IwishtoexpressmysinceregratitudetoProf. Dr.MasahiroS6@6>(EUM)forhis
critical reading of the manuscript. My hearty thanks are also due to Mr. Akira
K6H=>O6@> (Hokkaido), for donation of materials used for the present study.
(cid:2) (cid:3)
(cid:3)(cid:4)(cid:5)(cid:6)(cid:7) Cryptarcha kapfereri R:>II:G(cid:8)(cid:9)(cid:10)(cid:11)(cid:12)(cid:8)(cid:13)(cid:14)(cid:15) (cid:16)(cid:12)(cid:17)(cid:18)Cryptarcha inhalita
34 SadatomoH>H6B6IHJ
R:>II:G(cid:2)(cid:3)(cid:4)(cid:5)(cid:6)(cid:7)(cid:8) (cid:9)(cid:10)(cid:11)(cid:12)(cid:13)(cid:11)(cid:14)(cid:15)(cid:16)(cid:17)(cid:18)(cid:19)(cid:20)(cid:21)(cid:22) (cid:2)(cid:2) Cryptarchakapfereri(cid:23)(cid:24) 1913(cid:25)(cid:24)
R:>II:G(cid:2)(cid:26)(cid:27)(cid:5)(cid:28)(cid:16)(cid:29)(cid:30)(cid:31)(cid:26) !"#$(cid:24) %&’(cid:6)()*+(cid:6)!,(cid:23)-(cid:4)(cid:22) ./(cid:23)Cryptarcha
0(cid:6)1234(cid:2)5(cid:4)(cid:5)(cid:24) 6789(cid:6)12/:;(cid:12)<(cid:10)=>(cid:15)(cid:16)(cid:17)(cid:18)(cid:19)“Cryptarcha inhalita
R:>II:G”?@(cid:5)AB$(cid:5)(cid:4)CD(cid:23)(cid:24) E(cid:23)F(cid:6)C.kapfereri;G (cid:24) HI(cid:24) JK(cid:6)L C.inhalita(cid:23)(cid:24)
R:>II:G(cid:2)(cid:26)(cid:27)(cid:5)1884(cid:25)(cid:24) MN*+!"#$(cid:5)%&(cid:24) F$O;P@QRS#$F?(cid:6)-(cid:4)D;
GTF?UV*(cid:27)C(cid:22)./(cid:23)F(cid:6)WX(cid:2)(cid:24)YD(cid:6)Z[-\]^_‘+*(cid:2)aT??b(cid:2)(cid:24)cdR(cid:24)
efgh(cid:24) ijklmn-o(cid:6)R_pq(cid:5)(cid:24) rs(cid:2)t!"@C(cid:22) C.kapfereri(cid:23)89*+(cid:23)uv(cid:5)
Pw(cid:2)!,#$T(cid:22) OCxy(cid:2)z@(cid:5)(cid:24) (cid:12){(cid:19)|(cid:10)=>(cid:15)(cid:16)(cid:17)(cid:18)(cid:19) (cid:9)}~(cid:21) _C.inhalita(cid:2)(cid:24) (cid:12)
(cid:12)<(cid:10)=>(cid:15)(cid:16)(cid:17)(cid:18)(cid:19)_C.kapfereri(cid:2)G(cid:5)TF?_(cid:127)(cid:128)aT(cid:22)
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