Caccothryptus orion, Yoshitomi, 2015

Yoshitomi, Hiroyuki, 2015, Four new species of the genus Caccothryptus (Coleoptera, Limnichidae), European Journal of Taxonomy 147, pp. 1-17 : 6-7

publication ID	https://doi.org/ 10.5852/ejt.2015.147
publication LSID	lsid:zoobank.org:pub:00F1D3DF-F6E2-4D73-A289-664ED02DD747
DOI	https://doi.org/10.5281/zenodo.3793901
persistent identifier	https://treatment.plazi.org/id/42B7D5F0-7DC5-4BD5-8CCF-5A08F9222A54
taxon LSID	lsid:zoobank.org:act:42B7D5F0-7DC5-4BD5-8CCF-5A08F9222A54
treatment provided by	Carolina
scientific name	Caccothryptus orion
status	sp. nov.

Treatment

Caccothryptus orion sp. nov.

urn:lsid:zoobank.org:act:42B7D5F0-7DC5-4BD5-8CCF-5A08F9222A54 [Japanese name: Okinawa-oo-chibi-doromushi] Figs 1B View Fig , 2 View Fig F–J, 4C–D, 5A–B

Diagnosis

Smaller species in the genus; TL = 3.68–3.73 mm in male, 3.82–4.00 mm in female; parameres rather pointed in lateral view, with furrows in ventral part; apical emargination of parameres deeply U-shaped.

Etymology

The species is named after “Orion Beer” (copyright: Orion Breweries, Ltd), which is a local, but wellknown and favored beer in Okinawa. The type locality of this species is situated near the Nago Factory of Orion Beer.

Material examined

Holotype

JAPAN: 1 ♂ ( EUMJ), “ Genkagawa, Nago-shi, Okinawa Japan N26.616704, E128.062778, 10-IV-2015, Masato MORI leg.”.

GoogleMaps

Paratypes

JAPAN: 1 ♂ ( EUMJ), same data as for the holotype; 1 ♀, 1 ex. ( EUMJ), same data, but collector K. Kitayama; 1 ♀ ( EUMJ), “Zatsun, Kunigami, Okinawa, Ryukyus 21-VI-2006 K. Takahashi leg.”; 2 ♀♀ ( EUMJ), “Genka-ohkawa Okinawa 22-VII-1996 C. F. Lee leg.”.

Description

Male

Very similar to C. taiwanus sp. nov. in external features; body a little smaller and slender; elytral punctures coarser; PW / PL 1.88–1.94 (1.91), EL / EW 1.39–1.42 (1.40), EL / PL 3.14–3.33 (3.24), EW / PW 1.16–1.25 (1.21), TL / EW 1.83–1.84 (1.84).

Sternite VIII ( Fig. 2I View Fig ) U-shaped, bearing short setae in apical parts. Sternite IX ( Fig. 2J View Fig ) rather wide, with long and stout lateral projections. Aedeagus ( Fig. 2 View Fig F–H) stout, curved ventrally in apical part, punctate in apical part of median lobe and parameres; median lobe wide in lateral view, pointed at apex; apical emargination of parameres deeply U-shaped; apices of parameres rounded in ventral view; pointed in lateral view.

Female

Sexual dimorphism indistinct; PW / PL 1.85–1.94 (1.91), EL / EW 1.36–1.45 (1.42), EL / PL 3.15–3.44 (3.33), EW / PW 1.18–1.29 (1.23), TL / EW 1.77–1.91 (1.84). Ovipositor ( Fig. 4D View Fig ) well sclerotized; coxite closely punctuate, pointed at apices, about 1.11 times as long as spiculum ventrale ( Fig. 4C View Fig ); approximate ratio of coxite and baculus (n = 1) as 1.0: 3.45.

Measurements

Males (n = 2): TL 3.68–3.73 (3.71) mm, PW 1.60–1.75 (1.68) mm, PL 0.85–0.90 (0.88) mm, EL 2.83 mm, EW 2.00–2.03 (2.02) mm.

Females (n = 4): TL 3.82–4.00 (3.92) mm, PW 1.70–1.75 (1.73) mm, PL 0.90–0.92 (0.91) mm, EL 2.90–3.10 (3.01) mm, EW 2.00–2.20 (2.13) mm.

Distribution

Only known from the type locality, Okinawa-jima, the Ryukyus, Japan.

Remarks

This species belongs to the testudo species group (sensu Hernando & Ribera 2014). It is similar to C. taiwanus sp. nov. in the shape of the male genitalia, but differs from it in the following characteristics: parameres rather pointed in lateral view, with furrows in the ventral part; apex of the median lobe rather pointed in lateral view.

Biological notes

The type locality ( Fig. 5 View Fig A–B) is a small river and the specimens were collected from under the surface of water-logged wood (personal communication from Mr. Masato Mori).