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

description: Caccothryptus taiwanus sp. nov.
urn:lsid:zoobank.org:act: 578B475A-54DA-4600-9FFF-F5E7045F814E
Figs 1A, 2 A–E, 4A–B
Diagnosis
Smaller species in the genus; TL = 3.73–4.05 mm in male, 3.75–4.20 mm in female; parameres weakly pointed in lateral view; apical emargination of parameres deeply U-shaped, with small projections in inner margins.
Etymology
The species is named after the type locality.
Material examined
Holotype
TAIWAN: ♂ (TARI), “Taiwan: Ilan Fushan ---- [Chinese characters] 13. IV. 2011, leg. C. F. Lee ”.
Paratypes
TAIWAN: 2 ♂♂, 7 ♀♀, 13 ex. (TARI, EUMJ, NMW), same data as for the holotype; 1 ex. (TARI), “ Taiwan: Nantou Nanshanchi 25. VII. 2008, leg. W.-T. Liu”; 1 ♂, 1 ex. (SEHU), “ TAIWAN: NANTOU Nanshanchi 900 28. III. 1982 Col. T. FUJISAWA”; 1 ♂ (EUMJ), “[TAIWAN] Wulu Alt. ca. 700 m Haiduan Township Taitung Country ---- [Chinese characters] 17–18. VI. 2011 J. Yamasako leg.”; 1 ♀ (EUMJ), “(TAIWAN) Hsinhsien~Wulai Taipei Hsien 2. VII, 1970 Y. Hori leg.”.
Description
Male
Body (Fig. 1A) oblong, convex dorsally and ventrally, shiny, densely covered with short and long silver setae. Coloration of body black; legs and antennae paler.
Head densely punctate, slightly convex dorsally. Antennae relatively long, reaching about proximal 1/4 of elytra. Pronotum punctate as in head; PW/PL 1.90–2.11 (2.03). Scutellar shield equilateral triangular, finely punctate, lateral margins straight. Elytra oblong, widest at middle, lateral margins gently arcuate, coarsely and irregularly punctate; space between punctures same as their diameter; adpressed long silver setae forming obvious zigzag, irregular markings; apex obtuse; humeral parts weakly projecting dorsally; EL / EW 1.17–1.37 (1.31), EL / PL 3.00–3.50 (3.26), EW / PW 1.17–1.37 (1.23), TL / EW 1.53–1.78 (1.72). Each claw on foreleg of same size and shape.
Sternite VIII (Fig. 2D) U-shaped, bearing short setae in apical parts. Sternite IX (Fig. 2E) elongate, with long and stout lateral projections. Aedeagus (Fig. 2 A–C) stout, straightly curved ventrally in apical part, punctate in apical part of median lobe and parameres; median lobe wide in lateral view, rather pointed at apex; apical emargination of parameres deeply U-shaped, with small projections in inner margins; apices of parameres rounded in ventral view, weakly pointed in lateral view.
Female
Sexual dimorphism indistinct; PW / PL 1.65–2.26 (2.02), EL / EW 1.23–1.34 (1.30), EL / PL 2.65–3.56 (3.25), EW / PW 1.20–1.28 (1.23), TL / EW 1.60–1.79 (1.71). Ovipositor (Fig. 4B) well sclerotized; coxite closely punctuate, pointed at apices, about 1.18 times as long as spiculum ventrale (Fig. 4A); approximate ratio of coxite and baculus (n = 1) 1.0: 3.43.
Measurements
Males (n = 5): TL 3.73–4.05 (3.90) mm, PW 1.80–1.90 (1.86) mm, PL 0.88–1.00 (0.92) mm, EL 2.85– 3.15 (2.98) mm, EW 2.10–2.50 (2.28) mm.
Females (n = 8): TL 3.75–4.20 (4.02) mm, PW 1.80–2.03 (1.90) mm, PL 0.85–1.15 (0.95) mm, EL 2.90–3.20 (3.07) mm, EW 2.20–2.50 (2.35) mm.
Distribution
Only known from the type locality, Taiwan.
Remarks
This species belongs to the testudo species group (sensu Hernando & Ribera 2014). It resembles C. sinensis Hernando & Ribera, 2014, known from Fujian, China, in the shape of the parameres, which are broadly and deeply emarginated, and differs from it in the following male genital characteristics: apex of the median lobe rather rounded (rather pointed in C. sinensis); median lobe straightly projecting posteriorly (curved postero-ventrally in C. sinensis).
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 3-6, DOI: 10.5852/ejt.2015.147, http://zenodo.org/record/3787532