Sasajiscymnus Vandenberg, 2004

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), Zootaxa 5207 (1), pp. 1-104 : 5-8

publication ID	https://doi.org/ 10.11646/zootaxa.5207.1.1
publication LSID	lsid:zoobank.org:pub:A57EB27B-8524-42D8-8B85-564F879A5938
DOI	https://doi.org/10.5281/zenodo.7328088
persistent identifier	https://treatment.plazi.org/id/314287B0-F635-FFA6-FF7B-F8EC08E5FD04
treatment provided by	Plazi
scientific name	Sasajiscymnus Vandenberg, 2004
status

Treatment

Genus Sasajiscymnus Vandenberg, 2004 View in CoL View at ENA

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 View FIGURE 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Head exposed dorsally or withdrawn into prothorax ( Fig. 2a View FIGURE 2 ). 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 View FIGURE 2 ): 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 View FIGURE 2 ). Mandible robust, with a subapical tooth just behind apical tooth, molar teeth in both mandibles are asymmetric ( Figs 2b–c View FIGURE 2 ). Maxilla with cardo subquadrate to weakly transverse; palpomere 2 subquadrate; palpomere 3 short; terminal palpomere short, parallel sided ( Fig. 2f View FIGURE 2 ). Labial palps with 3 palpomeres; apical palpomere as long as penultimate one ( Fig. 2g View FIGURE 2 ). 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 View FIGURE 2 ). Prosternum T-shaped; prosternal process 0.5 coxal diameter, with complete carinae joined anteriorly forming square ( Fig. 2j View FIGURE 2 ). 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 View FIGURE 2 ). 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 View FIGURE 2 ). Abdominal postcoxal lines incomplete, not reaching the hind and lateral margins of ventrite 1.

Penis long and siphonate, with distinct penis capsule ( Fig. 2l View FIGURE 2 ). Penis guide symmetrical; parameres articulated with phallobase ( Figs 2o–n View FIGURE 2 ). Coxites triangular or quadrangular; spermatheca sometimes with very short or indistinct ramus and nodulus ( Fig. 3 View FIGURE 3 ).

Distribution. Asia, Africa, Oceania, North America (introduced).

Kingdom	Animalia
Phylum	Arthropoda
Class	Insecta
Order	Coleoptera
Family	Coccinellidae