Anthomalachius pseudospinosus ( Medvedev, 1964 )

Tong, Junbo, Tshernyshev, Sergei E., Yang, Yuxia & Liu, Haoyu, 2024, First record of the genus Anthomalachius Tshernyshev, 2009 (Coleoptera, Malachiidae) from China, Biodiversity Data Journal 12, pp. e 141874-e 141874 : e141874-

Anthomalachius pseudospinosus ( Medvedev, 1964)

Malachius pseudospinosus Medvedev, 1964 - Medvedev (1964): 156; Medvedev (1980): 117 (type locality: Kazakhstan).

Anthomalachius pseudospinosus ( Medvedev, 1964): Tshernyshev (2009): 29.

Materials

Type status: Other material. Occurrence: recordedBy: Shijun Ma; sex: 3 females; lifeStage: adult; occurrenceID: F6F52111-1D86-59E2-9C68-9BA111398C79; Location: country: China; stateProvince: Xinjiang; locality: Tacheng ; Event: year: 1955; month: 7; day: 22; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Shijun Ma; sex: 2 females; lifeStage: adult; occurrenceID: 19C4AD13-1C41-5A74-8975-A2D06ABE1179; Location: country: China; stateProvince: Xinjiang; county: Emin; locality: Emin River ; Event: year: 1955; month: 7; day: 22; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Xiongyi Yang; sex: 1 male; lifeStage: adult; occurrenceID: C5519162-0015-5F11-8500-DFC3488E92A2; Location: country: China; stateProvince: Xinjiang; county: Qinghe; Event: year: 1956; month: 8; day: 2; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: collector unknown; sex: 3 females; lifeStage: adult; occurrenceID: C00F1CDC-2D2B-5CA5-BA20-2AF2620DB5A3; Location: country: China; stateProvince: Xinjiang; county: Qinghe; locality: Aerxiate ; Event: year: 1956; month: 8; day: 2; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Chunpei Hong; sex: 7 males, 5 females; lifeStage: adult; occurrenceID: 8CD71849-D176-5498-A855-6E4CD5B3A324; Location: country: China; stateProvince: Xinjiang; county: Wulumuqi; locality: Wulabai ; Event: year: 1957; month: 6; day: 2; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Guang Wang; sex: 1 female; lifeStage: adult; occurrenceID: 0F597C9B-A0D5-5002-81B0-13AFD57B5AF0; Location: country: China; stateProvince: Xinjiang; county: Shihezi; locality: Manasi ; verbatimElevation: 510 m; Event: year: 1957; month: 6; day: 7; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Guang Wang; sex: 3 females; lifeStage: adult; occurrenceID: 8FE13DA6-C456-5882-A40E-BB4FCFDCB694; Location: country: China; stateProvince: Xinjiang; county: Shihezi; locality: Manasi ; verbatimElevation: 415-550 m; Event: year: 1957; month: 6; day: 8; habitat: Clover field; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Guang Wang; sex: 1 female; lifeStage: adult; occurrenceID: 9213E76F-910F-544B-A745-C28626E50A82; Location: country: China; stateProvince: Xinjiang; county: Shihezi; locality: Manasi ; verbatimElevation: 460-510 m; Event: year: 1957; month: 6; day: 8; habitat: Cotton field; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Guang Wang; sex: 1 female; lifeStage: adult; occurrenceID: 4D36D9C8-CBDF-5C05-8252-056F23B94A2D; Location: country: China; stateProvince: Xinjiang; county: Zhaosu; verbatimElevation: 1120-1620 m; Event: year: 1957; month: 8; day: 7; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: collector unknown; sex: 1 female; lifeStage: adult; occurrenceID: 190DA624-1382-5E0A-849F-836BCE4E86AD; Location: country: China; stateProvince: Xinjiang; county: Hutubi; Event: year: 1959; month: 7; day: 8; habitat: Mung bean field; Record Level: institutionID: Institute of Zoology, Chinese Academy of Sciences; institutionCode: IZAS

Type status: Other material. Occurrence: recordedBy: Guodong Ren; sex: 1 female; lifeStage: adult; occurrenceID: 57A0A65C-3EFE-53D7-9602-BB0D567637B3; Location: country: China; stateProvince: Xinjiang; county: Beitun; locality: Mu'erchang ; Event: year: 1992; month: 8; day: 8; Record Level: institutionID: Museum of Hebei University; institutionCode: MHBU

Description

Male. Length of body 4.2–5.0 mm, width at widest part of elytra 1.4–1.8 mm and at the base of elytra 1.0– 1.2 mm.

Body mostly black with metallic lustre, except clypeus, mandibles, genae and front side of labrum yellow and the elytral apices orange or yellow (Fig. 1 A and Fig. 3 A). Vesicles yellow. Dorsum with double pubescence consisting of adpressed pubescence and sparse black stiff bristles. Sculptures inconspicuous.

Head almost as wide as pronotum. Frons with a shallow depression. Labial palps with 3 palpomeres, apical palpomere suboval (Fig. 3 B). Clypeus distinct and membranous (Fig. 3 C). Mandible triangular, with a subapical tooth just behind apical tooth (Fig. 3 D). Maxilla with cardo short; palpomere Ⅱ elongate; III subquadrate; Ⅳ subconical (Fig. 3 E). Antennae long, reaching the middle of elytra; antennomere Ⅰ club-shaped; Ⅱ small and subquadrate; Ⅲ – Ⅹ trapezoidal; Ⅺ elongated oval (Fig. 3 F).

Pronotum slightly transverse, anterior margin arcuate, posterior margin straight, all angles rounded, with distinct depressions at posterior angles.

Scutellar shield small, transverse, with smoothed edges.

Elytra subparallel, base of elytra slightly wider than pronotum. Humeri distinct, slightly protruding. Elytral apices distinctly depressed, with lamellate vertical appendages provided with small curved plate, bearing a tuft of long curved hairs distally (Fig. 2 ).

Hind wings normally developed.

Legs slender. Hind femora reaching elytral apices. All tibiae thin and straight. All tarsi with 5 tarsomeres; tarsomere II of fore tarsi simple, lacking specialised comb; Ⅴ longest and Ⅳ shortest in all legs. Claws thin and sharp, with membrane at base.

Metathorax simple, lacking appendages. Pygidium rectangular, with apical margin emarginate (Fig. 4 B); ultimate abdominal ventrite narrowly connected at middle with very deep apical incision (Fig. 4 A). Tegmen elongate; aedeagus slender with lateral margins nearly parallel, apex with a distinct protuberance in ventral view (Fig. 4 C and D).

Female. Length of body 4.2–5.6 mm, width at widest part of elytra 1.5–2.0 mm and at the base of elytra 1.1–1.3 mm.

Similar to male species, except for antennae thinner, interocular depression feeble and elytral apices simple without lamellate appendages (Fig. 1 B).

Pygidium large and elongate (Fig. 5 A). Ultimate abdominal ventrite with long spiculum ventrale (Fig. 5 B). Ovipositor elongate and membranous (Fig. 5 C).

Diagnosis

This species closely resembles A. senylia ( Tshernyshev, 2000) , but can be distinguished from the latter by the thinner antennae, pygidium with apical margin emarginate in males and aedeagus with a distinct apical protuberance in ventral view. In A. senylia , antennae are more robust, pygidium slightly extending outwards in males and aedeagus is without protuberance ( Tshernyshev 2000, Tshernyshev 2009).

Distribution

China (Xinjiang) (Fig. 6 ); Kazakhstan; Turkey.

Figures

Figure 1. Anthomalachius pseudospinosus (Medvedev, 1964), habitus: A male, dorsal view; B female, dorsal view. Scale bars: 1.0 mm.

Figure 2. Anthomalachius pseudospinosus (Medvedev, 1964), male, elytral apices. Scale bars: 1.0 mm.

Figure 3. A. pseudospinosus (Medvedev, 1964), male. A head; B labium; C labrum; D mandible; E maxilla; F antenna. Scale bars: 0.2 mm.

Figure 4. Anthomalachius pseudospinosus (Medvedev, 1964), male: A ultimate abdominal ventrite; B pygidium; C male genitalia, lateral view; D male genitalia, ventral view. Scale bars: 0.2 mm.

Figure 5. Anthomalachius pseudospinosus (Medvedev, 1964), female: A pygidium; B ultimate abdominal ventrite; C ovipositor. Scale bars: 0.2 mm.

Figure 6. Distribution map of Anthomalachius pseudospinosus (Medvedev, 1964) in Xinjiang Autonomous Region of China (red circle).