Chrysolina (Allohypericia) pubitarsis Bechyné, 1950

Mikhailov, Yu. E., 2021, New and little known representatives of the genus Chrysolina Motschulsky, 1860 (Coleoptera: Chrysomelidae) from China, Far Eastern Entomologist 443, pp. 6-16 : 10-12

Chrysolina (Allohypericia) pubitarsis Bechyné, 1950 , stat. resurr.

Figs 3–5

Chrysolina (Allohypericia) pubitarsis Bechyné, 1950: 160 (lectotype - ♂, " Chine: Péking "; in

NMPC; designated here).

Chrysolina (Hypericia) pubitarsis: Bienkowski, 2001: 169 (nec Chrysolina pubitarsis Bechyné, 1950 ). Synonymised with Chrysolina (Hypericia) difficilis ussuriensis (Jacobson,

1901: 126) by Bienkowski, 2001: 169.

TYPE MATERIAL EXAMINED. Lectotype ( Fig. 3 ): 1♂, with labels ( Fig.4 ): Chine [p]

Pk. [h] / A. DAVID [p, w] | C. lobicollis Frm. [h] / J. Achard det. [p] ??? [h] | Coll. Achard

[h] | TYPUS [p, r] | Chrysolina TYPE / pubitarsis n. sp. / = aeruginosa Chen [h] / 1949 [h]

Det. J. Bechynĕ. [p] | LECTOTYPUS / Chrysolina pubitarsis / Bechynĕ, 1950 / Yu. Mikhailov design. 2020 [p, r] ( NMPC) .

REDESCRIPTION. Male (lectotype). Body moderately convex, elongate, ovate; length –

6.2 mm, width – 4.1 mm. Dorsum shining, smooth, metallic bronze; underside, legs,

antennae, maxillary palpi and tarsi pitchy brown, antennomeres 1 and 2 rufous.

Head: frontoclypeus densely covered with large punctures; frontal suture not pronounced,

epicranial suture slightly deepened. Last maxillary palpomere barrel-shaped, truncate apically,

1.2x longer then broad, 1.3x longer and 1.1x wider than previous palpomere. Relative length of antennomeres 1–3 as ratios 7, 4, 7. Tenth antennomere 1.4x longer than broad, eleventh antennomere – 2.1x. Orbital lines narrow, not reaching antennal insertion. Antenna inserted

1.1x closer to clypeus than to eye.

(lectotype, not completely mature); 6 – Ch. mauroi Lopatin (holotype, China: Sichuan), modified from Bienkowski (2019). Scale bars = 0.5 mm .

Thorax: pronotum transverse, twice broader than long, broadest at base; pronotal disc evenly convex, covered with dense medium sized punctures; sides almost straight and parallel in basal 2/3 and rounded only at anterior angles; width between anterior angles 1.5x less than basal width. Anterior angles produced, triangular; basal angles acute; anterior side margined and ciliate; basal edge arcuately convex. Lateral sides swollen along entire length, but visibly margined in dorsal view, lateral callus narrow, lateral impression present along entire length,

moderately deep and filled with coarse punctures partly coalescent in basal 3/4. Prothoracic hypomera slightly convex, outer side almost flat and shagreened with impression at basal 1/4

covered with merged large punctures; basal fold pronounced; prosternal process almost flat longitudinally, covered with coarse punctures; anterolateral portion of prosternum narrow,

with slightly impressed furrow medially; prosternum 1.1x shorter than metasternum; metasternum 1.25x shorter than first ventrite. Scutellum triangular, smooth, with only few fine punctures near base.

Elytra with weak humeral callus and flat intervals, each elytron 2.25 times longer than wide, elytral length 4.2 mm. Primary punctures moderately large, scutellar row quite long,

consist of 8-9 punctures, rows 2-9 regular, slightly paired, punctures spaced at distance mainly twice larger than their diameter. Secondary puncturation consists of very fine and fine punctures; latter rare and predominate on even intervals. Marginal stria with large sparse impressed punctures. Sutural stria distinct at apical slope. Epipleura inclined outside, visible along entire length. Hind wings absent.

Tarsi only slightly broadened, fore tarsi 2.7x as long as broad, ratio of width of fore tarsomeres 1–3 as 1.0, 0.8, 1.2. Tarsi with entire sole beneath, only all tarsomeres 1 in basal

2/5 with short glabrous stripe beneath.

Abdomen: pygidium with impression in basal half; all ventrites with pronounced greenish luster; ventrite 1 broadly margined on anterior edge, covered with sparse medium-sized punctures, only anterior intercoxal process covered with large punctures fused with longitudinal wrinkles. Last ventrite slightly convex, apex broadly truncate, medially covered with sparse punctures. Aedeagus with slightly narrowed and broadly rounded apex and sharp denticles ventrally at its sides ( Fig. 5 ).

DIFFERENTIAL DIAGNOSIS. Among Allohypericia only one species has all tarsomeres

1 entirely pubescent beneath in both sexes, namely Ch. mauroi Lopatin, 2005 from Sichuan.

Besides tarsal pubescense it similarly has impression in basal half of pygidium and similar aedeagus shape ( Fig. 6 ).

REMARKS. Bechyné (1950) compared Ch. pubitarsis with Ch. lobicollis and Ch.

aeruginosa and placed it in the subgenus Allohypericia . Although he noted its difference from all other members of this subgenus in tarsi wholly pubescent beneath in both sexes.

Bieńkowski (2001) examined one female determined by J. Bechyné as " Ch. pubitarsis " and found this specimen conspecific with Ch. difficilis . This specimen was not syntype, moreover it was collected not in Beijing, but in Manchuria. However based solely on such questionable material Bieńkowski (2001, 2019) placed Ch. pubitarsis in the subgenus Hypericia Bedel,

1892 and synonymised it with Ch. difficilis .

I found the type of Chrysolina pubitarsis in the collection of NMPC. It is a male but nobody prepared the aedeagus before. Although the specimen is not entirely mature, the aedeagus shape is clear ( Fig. 5 ). I did not find the female syntype but according to the original description it existed and had all tarsomeres 1 entirely pubescent beneath. However, it is possible that female is not conspecific with the male type. Here I designate the lectotype of

Chrysolina pubitarsis and confirm that it is a representative of subgenus Allohypericia as originally stated by J. Bechyné. The redescription is given above because the original description of this species (Bechyné, 1950) is brief and includes mainly differential diagnosis.

Figures

Figs 1–4. Habitus in dorsal view and labels of the types. 1, 2 – Chrysomela lobicollis Fairmaire: 1 – lectotype, female; 2 – labels of lectotype; 3, 4 – Ch. pubitarsis Bechynĕ: 3 –

Figs 5–6. Aedeagus in dorsal and ventro-lateral view. 5 – Chrysolina pubitarsis Bechynĕ