Caccothryptus orion Yoshitomi, 2015, sp. nov.
Creators: name: Yoshitomi, Hiroyuki
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Limnichidae
Caccothryptus
Caccothryptus orion

description: Caccothryptus orion sp. nov.
urn:lsid:zoobank.org:act: 42B7D5F0-7DC5-4BD5-8CCF-5A08F9222A54 [Japanese name: Okinawa-oo-chibi-doromushi] Figs 1B, 2 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.”.
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) U-shaped, bearing short setae in apical parts. Sternite IX (Fig. 2J) rather wide, with long and stout lateral projections. Aedeagus (Fig. 2 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) well sclerotized; coxite closely punctuate, pointed at apices, about 1.11 times as long as spiculum ventrale (Fig. 4C); 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 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).
description: Published as part of Yoshitomi, Hiroyuki, 2015, Four new species of the genus Caccothryptus (Coleoptera, Limnichidae), pp. 1-17 in European Journal of Taxonomy 147 on pages 6-7, DOI: 10.5852/ejt.2015.147, http://zenodo.org/record/3787532