Gyrophaena (Gyrophaena) korbi A. Strand, 1939

Glotov, S. V., 2022, A New Species, New Synonymy, And Additional Records Of Gyrophaena (Coleoptera, Staphylinidae, Aleocha- Rinae) From The Palaearctic Region, Zoodiversity 56 (5), pp. 373-384 : 378

Gyrophaena (Gyrophaena) korbi A. Strand, 1939

Strand, 1939: 109.

M a t e r i a l e x a m i n e d. Types. Lectotype Ơ Gyrophaena korbi : (here designated): “Kasp. Meer-Geb. Talysch 18.07 Korb [collector] / TYPUS Gyrophaena korbi [pink label] / NHMO: type collection 1000175161 / LECTOTYPE Ơ Gyrophaena korbi A. Strand, 1939 des. Glotov 2010” ( NHMO).

R e d e s c r i p t i o n. Measurements (in mm): length of antenna: 0.63; maximal head width (including eyes): 0.45; head length: 0.28; maximal width of pronotum: 0.51; length of pronotum (measured along its midline): 0.31; length of elytra at suture: 0.32; maximal width of elytra (combined width of each elytron when elytra closed along suture): 0.65; total length of body (from anterior margin of labrum to posterior margin of tergite VIII): 2.0.

Coloration: head dark-brown; pronotum pale brown; elytra yellow-brown, posteri- or angles and base dark brown; abdomen yellow-brown, abdominal tergites IV–VI dark brown; mouthparts, antennae and legs yellow.

Head strongly transverse, vertex with 10 or more sparse, small, round, distinct punctures on each side; microsculpture dense and distinct. Antennae: antennal segment I long, strongly widened towards apex; segment II long, narrower and shorter than segment I; segment III narrower and shorter than segment II; segments IV–X transverse, all segmentsalmost parallel-sided.

Pronotum strongly transverse, posterior angles and posterior margin of pronotal disc rounded; in the middle with 2 longitudinal rows of 5 (2 moderately large and 3 small) round, distinct punctures each; microsculpture dense and distinct.

Elytra as wide as pronotum; with dense and fine punctuation; microsculpture dense and distinct; with sparsely distributed fine setae.

Abdomen: abdominal tergites each with punctuation relatively indistinct or absent. Male: posterior margin of tergite VIII with wide incision bordered by 2 short, wide, apically weakly pointed, inward curved appendages and medially with 2 short and thin appendages ( fig. 1 , 5). Aedeagus ( fig. 2 , 4).

D i s t r i b u t i o n. Azerbaijan, Iran ( Enushchenko & Semenov, 2016).

Comments. The original description of G. korbi is based on 50 syntypes collected in “ Lenkoran ” ( Azerbaijan) and “Talysch” (a historical and geographical area of the southwest coast of the Caspian Sea which is divided between two states: Azerbaijan and Iran), by Korb and Leder ( Strand, 1939). A male syntype was found in the collections of NHMO. The designation of the male specimen as lectotype is done for the better fixation of the identity of the name Gyrophaena korbi A. Strand, 1939 .

Figures

Fig. 1. Abdominal tergites VIII of the male: 1 — G. anastasiarum sp.n.; 2 — G. kaunshanchiensis; 3–4 — G. hanseni; 5 — G. korbi; 6 — G. munsteri; 7 — G. pseudonana; 8 — G. pseudonitidula; 9 — G. transversalis; 10 — G. triquetra.

Fig. 2. Aedeagus: 1 — G. anastasiarum, sp. n.; 2 — G. hanseni; 3 — G. kaunshanchiensis; 4 — G. korbi; 5 — G. munsteri; 6 — G. pseudonana; 7 — G. pseudonitidula; 8 — G. transversalis; 9 — G. triquetra.