Sasajiscymnus Vandenberg 2004
Creators: name: TONG, JUNBO
name: CHEN, XIAOSHENG
name: ZHANG, XIAONING
name: HUO, LIZHI
name: WU, GANG
name: PENG, ZHENGQIANG
name: WANG, XINGMIN
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Sasajiscymnus

description: Genus Sasajiscymnus Vandenberg, 2004
Chinese name: ḧẋ毛瓢•ƌ
Pseudoscymnus Chapin, 1962: 50.
Type species: Scymnus hareja Weise, 1879, by original designation.
Sasajiscymnus Vandenberg, 2004: 483. Replacement name for Pseudoscymnus Chapin, 1962 (nec. Pseudoscymnus Herre 1935—Chordata: Chondrichthyes).
Diagnosis. Sasajiscymnus is similar to Axinoscymnus Kamiya in having three tarsomere tarsi. It also closely resembles Scymnus Kugelann in external appearance. However, it can be easily distinguished from the genera within the tribe Scymnini by its short antennae (nine antennomeres) with 2 or 3 extraordinarily long apical setae.
Description. Body elongate oval, moderately convex, dorsum pubescent (Fig. 1). Body size ranging from 1.3 mm to 3.6 mm in length. The elytral color is usually black and yellow.
Head exposed dorsally or withdrawn into prothorax (Fig. 2a). Eyes dorsally 0.6–0.7× length of head capsule, with ocular canthus extending slightly into eye. Frons wide and flat, not emarginate. Antennae short with 9 antennomeres (Fig. 2e): antennomere 1 large and bent; antennomere 2 about as broad as 1st; antennomeres 3–4 somewhat triangular, distinctly longer than wide; antennomere 5 transverse, broadening apically, forming a short support for club; antennomeres 6–9 forming a compact club, terminal antennomere with 2 or 3 long apical setae. Clypeus with anterior margin slightly arcuate. Labrum entirely exposed, transverse (Fig. 2d). Mandible robust, with a subapical tooth just behind apical tooth, molar teeth in both mandibles are asymmetric (Figs 2b–c). Maxilla with cardo subquadrate to weakly transverse; palpomere 2 subquadrate; palpomere 3 short; terminal palpomere short, parallel sided (Fig. 2f). Labial palps with 3 palpomeres; apical palpomere as long as penultimate one (Fig. 2g). Mentum cordiform, narrowed basally.
Pronotum convex; anterior angle of pronotum indistinct; lateral edge smooth; basal marginal line along the edge distinct and complete (Fig. 2h). Prosternum T-shaped; prosternal process 0.5 coxal diameter, with complete carinae joined anteriorly forming square (Fig. 2j). Prosternum in front of coxae distinctly longer than basal width of prosternal process. Procoxal cavity transverse.
Mesoventral process broad, meso-metaventral junction forming a straight line, with suture visible. Elytral epipleuron incomplete apically, surface nearly horizontal and flat without distinct foveae. Protibia cylindrical, tarsi trimerous; tarsal claws in both sexes with large basal tooth (Fig. 2i). Tibiae without apical spurs.
Abdomen with six ventrites in both sexes; ventrite 1 slightly longer than ventrite 2, posterior margin straight or weakly arcuate (Fig. 2k). Abdominal postcoxal lines incomplete, not reaching the hind and lateral margins of ventrite 1.
Penis long and siphonate, with distinct penis capsule (Fig. 2l). Penis guide symmetrical; parameres articulated with phallobase (Figs 2o–n). Coxites triangular or quadrangular; spermatheca sometimes with very short or indistinct ramus and nodulus (Fig. 3).
Distribution. Asia, Africa, Oceania, North America (introduced).
description: Published as part of TONG, JUNBO, CHEN, XIAOSHENG, ZHANG, XIAONING, HUO, LIZHI, WU, GANG, PENG, ZHENGQIANG & WANG, XINGMIN, 2022, A review of the genus Sasajiscymnus Vandenberg, 2004 from China (Coleoptera, Coccinellidae), pp. 1-104 in Zootaxa 5207 (1) on pages 5-8, DOI: 10.11646/zootaxa.5207.1.1, http://zenodo.org/record/7328080