Scymnus (Parapullus) Yang, 1978

Chen, Xiao-Sheng, Ren, Shun-Xiang & Wang, Xing-Min, 2012, Revision of the subgenus Scymnus (Parapullus) Yang from China (Coleoptera: Coccinellidae), Zootaxa 3174, pp. 22-34 : 23

publication ID	https://doi.org/ 10.5281/zenodo.279895
DOI	https://doi.org/10.5281/zenodo.6180326
persistent identifier	https://treatment.plazi.org/id/03CE87CC-6B03-FFBE-6D8E-FB5FFD1CFAD8
treatment provided by	Plazi
scientific name	Scymnus (Parapullus) Yang, 1978
status

Treatment

Scymnus (Parapullus) Yang, 1978: 27 . Type species: Scymnus (Parapullus) secula Yang , by original designation. Paucus Duverger, 1990: 67. Type species: Coccinella abietis Paykull, 1798 .

Diagnosis. Body small, length 2.00– 2.60 mm. Antenna 10-segmented ( Fig. 3 View FIGURE 1 – 9 ). Prosternum with distinct intercoxal carinae, almost reaching the anterior margin ( Fig. 7 View FIGURE 1 – 9 ). Humeral calli distinct. Abdominal postcoxal line incomplete, never reaching lateral margin of ventrite ( Fig. 6 View FIGURE 1 – 9 ). Penis slender with developed capsule ( Fig. 19 View FIGURE 18 – 27 ). Parameres of the tegmen usually with two groups of long setae ( Fig. 21 View FIGURE 18 – 27 ).

Description. Body elongate oval, moderately convex, with pubescence, widest at the middle of elytra ( Figs. 10–17 View FIGURE 10 – 17 ).

Head relatively small; frons broad, weakly convex, finely punctuate, about one-half as wide as head; innerocular margin slightly arcuated. Clypeus slightly incurvate anteriorly. Antennae 10-segmented ( Fig. 3 View FIGURE 1 – 9 ), 1st antennomere stout, curved and slightly rounded on outer side; 2nd a little narrower than and two times as long as 1st, 3rd obviously longer than 4th. Antennal club compact, 3-segmented. Labrum transverse with lateral margin almost rounded. Mandible bifid apically with a molar tooth at the base ( Fig. 4 View FIGURE 1 – 9 ). Terminal maxillary palpomere stout with lateral margins almost parallel, apical strongly obliquely truncate ( Fig. 1 View FIGURE 1 – 9 ). Labial palps 3-segmented, terminal palpomere blunt ( Fig. 2 View FIGURE 1 – 9 ).

Pronotum moderately convex, lateral margins curved, at middle of length twice as wide as long. Pronotal hypomeron broad without delimited foveae. Prosternal process moderately wide, quadrate, with nearly parallel carinae, joining anterior margin ( Fig. 7 View FIGURE 1 – 9 ). Scutellum small, triangular. Elytra distinctly wider at base than pronotum. Humeral calli rather prominent. Disc finely punctured. Elytral epipleuron narrow and terminated at level of hind coxae. Abdomen with six ventrites. Abdominal postcoxal lines incomplete ( Fig. 6 View FIGURE 1 – 9 ), slightly recurved toward the base of ventrite. Leg slender and long, not expanding beyond the external boundary of the body ( Fig. 5 View FIGURE 1 – 9 ). Tarsi 4- segmented, claws slender, bifid, the inner tooth shorter and more curved than the outer one.

Remarks. There is little known about the biology of this subgenus. Yu et al. (2000) investigated the natural enemies of the hemlock woolly adelgid ( Adelges tsugae Annand ) and found a species, Scymnus (Parapullus) tsugae Yu and Yao , which was collected from the Chinese hemlock ( Tsuga spp.). However, it didn’t record this species as predator of the hemlock woolly adelgid.

Kingdom	Animalia
Phylum	Arthropoda
Class	Insecta
Order	Coleoptera
Family	Coccinellidae
Genus	Scymnus