Exrhynchites storozhenkoi Legalov, 2021

Legalov, A. A., 2021, A NEW SPECIES OF THE GENUS EXRHYNCHITES VOSS, 1930 (COLEOPTERA: RHYNCHITIDAE) FROM VIETNAM, Far Eastern Entomologist 438, pp. 1-5 : 2-5

Exrhynchites storozhenkoi Legalov , sp. n.

http://zoobank.org/NomenclaturalActs/ 9359385E-8043-41B8-90E1-32C0A6B172CC

Figs 1–8

TYPE MATERIAL. Holotype – ♂, Vietnam: Lai Châu Province, near Lai Châu,

VI 2020, local collector ( ISEA).

DESCRIPTION. MALE. Body length (without rostrum) 9.0 mm. Rostrum length

3.9 mm. Body black, without metallic blue luster, cowered with dense yellow-brown hairs. Antennal club and tarsi with black hairs. Head subconical behind eye. Man-

dibles large, externally edentate. Rostrum long, weakly curved, 1.4 times as long as pronotum, 6.2 times as long as wide at apex, 7.3 times as long as wide in middle,

5.7 times as long as wide at base, sparsely punctate, with median carina from base to antennal insertion, glabrous from apex to antennal insertion. Antennal scrobes weak, directed to eye. Eyes large, convex and rounded. Forehead weakly convex,

punctate, 1.1 times as wide as rostrum base width. Temples as long as eye. Antennae long, inserted behind middle of rostrum, almost reaching middle of pronotum. Antennomeres 1 and 2 oval. Antennomere 1 1.6 times as long as wide. Antennomere 2

1.6 times as long as wide, 0.9 times as long as and 0.9 times as narrow as antennomere 1. Antennomeres 3-4 long-conical. Antennomere 3 3.1 times as long as wide,

1.7 times as long as and 0.9 times as narrow as antennomere 2. Antennomere 4 2.4

view; 3 – frontal view; 4 – lateral view. Scale bar 1.0 mm.

times as long as wide, 0.8 times as long as and equal in width to antennomere 3. Antennomeres 5-8 subconical. Antennomere 5 0.9 times as long as wide, 0.4 times as long as and 1.19 times as wide as antennomere 4. Antennomere 6 1.3 times as long as wide, 1.9 times as long as and 1.3 times as wide as antennomere 5. Antennomere 7

equal in length and width, 0.8 times as long as and 1.1 times as wide as antennomere

6. Antennomere 8 0.9 times as long as wide, 0.9 times as long as and equal in width to antennomere 7. Antennal club loose and wide, weakly fattened. Antennomere 9

0.9 times as long as wide, 1.6 times as long as and 1.6 times as wide as antennomere

8. Antennomere 10 subequal to antennomere 9. Antennomere 11 2.3 times as long as wide, 2.3 times as long as and 0.9 times as narrow as antennomere 10. Pronotum

6 – tegmen; 7 – tergite 8; 8 – armament of endophallus. Scale bar 1.0 mm for figs 5–7 and

0.2 mm for fig. 8.

almost bell-shaped, 1.6 times as long as wide at apex, 1.1 times as long as wide in middle and at base. Disk weakly convex, densely punctate. Scutellum almost rhom-

boidal. Elytra 1.5 times as long as wide at base and at apical fourth, 1.3 times as long as wide in middle, 3.1 times as long as pronotum. Humeri weakly flattened.

Elytral striae distinct. Striae 9 striae merge with striae 10 before metacoxa. Intervals flattened, punctate. Pre- and postcoxal portions of prosternum short. Procoxal cavi-

ties contiguous. Metanepisternum quite wide, punctuate, 1.7 times as long as wide in middle. Metaventrite weakly convex, punctate, 1.8 times as long as length of meta-

coxal cavity. Abdomen convex, densely punctate. Ventrites 1 and 2 fused. Ventrite

1 0.7 times as long as length of metacoxa. Ventrite 2 1.1 times as long as ventrite 1.

Ventrite 3 0.6 times as long as ventrite 2. Ventrite 4 0.9 times as long as ventrite 3.

Ventrite 5 0.8 times as long as ventrite 4. Part of propygidium and pygidium exposed.

Procoxae large, conical, with large pit and hair bunches. Metacoxae transverse.

Trochanters small. Femora thickened, lacking teeth. Tibiae almost straight, with costate dorsal margin. Tarsi long. Tarsomere 1 conical. Tarsomere 2 wide-conical.

Tarsomere 3 wide-bilobed. Tarsomere 5 elongate. Tarsal claws divergent, with long teeth. Armament of endophallus sclerotized ( Fig. 8 ).

Female unknown.

COMPARISION. The new species differs from other species of the genus in the body without metallic blue luster, cowered with dense yellow-brown hairs, and sclerotized armament of the endophallus.

DISTRIBUTION. Vietnam: Lai Châu Prov.

ETYMOLOGY. The species is named in honor of Sergey Yu. Storozhenko

(Vladivostok, Russia), who contributed to the study of East Asian insects.

Figures

Figs 1–4. Exrhynchites storozhenkoi sp. n., holotype, habitus: 1 – dorsal view; 2 – ventral

Figs 5–8. Exrhynchites storozhenkoi sp. n., holotype, genitalia, dorsal view: 5 – aedeagus;