Adelphophylus oenderi, Çerçi & Koçak & Tezcan, 2019

Çerçi, Barış, Koçak, Özgür & Tezcan, Serdar, 2019, Two new species and ten new records of Heteroptera from Turkey, including the first record of the potential alien Campylomma miyamotoi in the Western Palaearctic, Acta Entomologica Musei Nationalis Pragae 59 (1), pp. 295-306 : 296-297

Adelphophylus oenderi sp. nov.

( Fig. 1 )

Type locality. Turkey, Mersin, Silifke, 36°22′39.1″N 33°56′10.7″E.

Material examined. HOLOTYPE: 1 3 ( LEMT), TURKEY: MERSIN: Silifke , 36°22′39.1″N 33°56′10.7″E, 25.07.1984; glued on a pointed cardboard with male genitalia inside a tube filled with glycerol, labels as follows: ʻTurkey, Mersin prov. / Silifke, on Verbascum sp. / F. Önder coll. [white printed label] // Holotypus / Adelphophylus oenderi sp. n. / B. Çerçi det. 2019 / [red printed label]’ . PARATYPES: TURKEY: MERSIN: 2 33 8 ♀♀, Silifke, 25.vii.1984, F. Önder leg., B. Çerçi det. ( LEMT); 2 ♀♀, Mut, 27.vii.1984, on Verbascum sp., F. Önder leg., B. Çerçi det. ( LEMT).

Diagnosis. The new species is recognized by the combination of the following characters: shape oval, general coloration reddish brown to black, head always more or less brownish, antennae, legs, coxae and labium pale yellow, hemelytra unicolorous, slightly translucent and enlarged towards apical half, vesica ( Fig. 1C ) with one short and two long processes, short process without any neighbouring teeth, one of long processes thin and unarmed, other one thick and armed with small teeth, sclerotized rings of bursa copulatrix large and broad, sclerotized recessses above sclerotized rings small. Description (3♀). Coloration. Reddish brown to black ( Figs 1 A–B). Head reddish brown to dark brown, in pale specimens tylus even reddish, antennae uniformly pale yellow; pronotum, scutellum and hemelytra uniformly reddish brown to black. Hemelytra slightly translucent. Membrane dark brown. Legs, coxae and rostrum pale yellow except for apex of last tarsomeres and claws which are slightly darkened. Body black.

Surface and vestiture. Smooth and slightly shiny. Setae covering head, pronotum, scutellum and hemelytra unicolorous brown, mostly erected on head and adpressed on pronotum, scutellum and hemelytra, setae covering antennae short, adpressed and hyaline. Tibiae with thin hyaline spines.

Structure. Body 3.2‒3.7 mm long, oval, 2.8‒3.2 times as long as width of posterior edge of pronotum. Head vertical, 5 times as wide as its length in dorsal view and 1.2 times as wide as width of anterior edge of pronotum, strongly sloped downwards, 1.4 times as wide as high in frontal view. Vertex with more or less obvious carina along posterior edge, ocular index 1.9‒2.1. Antennae half the length of body, first two antennal segments slightly but conspicuously thicker than last two segments, second segment 0.5‒0.7 as long as width of pronotum and as long as or slightly shorther than width of head, ratio of antennal segments 6:24:15: 14 in male and 8:30:21: 16 in female. Pronotum trapezoid, posterior margin 1.4‒1.6 times as wide as anterior margin, and twice as wide as length of pronotum, lateral margins straight. Basis of scutellum large. Hemelytra enlarged towards apex, more conspicuously in females than in males, considerably surpassing abdomen. Legs very gracile, hyaline spines of tibia as long as tibia width. Rostrum widely surpassing posterior coxae but not reaching apex of abdomen.

Vesica ( Fig. 1C ) large and gracile, U-shaped, with one short and two long apical sclerotized processes, finger-like short process smooth, without any teeth, one of long processes thicker and armed with small denticles, other one thin and unarmed. Both parameres very similar to that of congeners. Dorsal view of bursa copulatrix as in Fig. 1D . Sclerotized rings large, slighltly different from each other in shape. Sclerotized recess (SR) above rings small.

Differential diagnosis. The genus Adelphophylus consists of the following four species occurring in the mountainous areas of the Balkans: A. balcanicus Kormilev, 1939 from south Macedonia, south Bulgaria and Albania, A. kormilevi Protić, 2003 from south Macedonia, A. serbicus Protić, 2003 from central Serbia and A. pericarti Matocq & Magnien, 2009 from south Bulgaria and the north of Greece ( MATOCQ & MAGNIEN 2009). Adelphophylus oenderi sp. nov. was discovered in Toros mountains in South Anatolia. Its remote distribution readily suggests that this separate population might belong to a separate species. As noted by MATOCQ & MAGNIEN (2009), the species of Adelphophylus are almost undistinguishable from each other in appearance, and examination of male genitalia is necessary for a reliable identification. Adelphophylus oenderi is not an exception, being almost identical to the other species of the genus in general shape and coloration. With its length of 3.2‒3.7 mm, A. oenderi is slightly smaller than the four Balkan species of the genus (among them the smallest one is A. balcanicus , with females 3.8 mm long) ( WAGNER 1959, PROTIĆ 2003). In addition to its small size, the new species might be distinguished from A. pericarti by the reddish brown to dark brown colored head (black in A. pericarti ) and by the conspicuously enlarged hemelytra (parallel-sided in the other three species of the genus). However, these characters are not fully reliable and may vary substantially when a large number of specimens are examined. Consequently, the only reliable distinguishing feature is the structure of the vesica. As mentioned by MATOCQ & MAGNIEN (2009), the four Balkan species can be divided into two groups with respect to the shape of their vesica which is short, thick and robust in A. balcanicus , A. kormilevi , and A. serbicus , and long, thin and U-shaped in A. pericarti . In this respect, A. oenderi belongs to the second group but is unique in the genus due to the presence of a third apical process of vesica. Additionaly, the short apical process of the vesica is finger-shaped and mutic. In contrast, the short apical processes of A. balcanicus , A. serbicus , and A. pericarti are armed with numerous teeth which form a charateristic hand-like structure; A. kormilevi lacks the short process altogether ( PROTIĆ 2003). The new species can also be distinguished from A. pericarti by the structure of bursa copulatrix. Sclerotized rings of A. oenderi are larger and broader than those of A. pericarti , and the sclerotized recesses above sclerotized rings (SR in Fig. 1D ) are smaller.

Biology. The species of this genus are known to feed on Verbascum sp. ( Scrophulariaceae ) ( MATOCQ & MAGNIEN 2009). Specimens of A. oenderi were also found on Verbascum sp.

Etymology. The new species is dedicated to Prof. Dr. Feyzi Önder who was the finest Turkish entomologist that ever lived, contributed to the knowledge of the Heteroptera fauna of Turkey throughout his life and was the collector of this new species.

Figures

Fig. 1. Adelphophylus oenderi sp. nov.: A ‒ male; B ‒ female; C ‒ vesica; D ‒ bursa copulatrix. Abbreviation: SR ‒ sclerotized recess. Scale bars: A, B ‒ 1 mm; C ‒ 0.5 mm; D ‒ 0.1 mm.