(Heteroptera: Miridae) from Baltic Amber ALEKSANDER HERCZEK
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POLSKIE PISMO ENTOMOLOGICZNE P O L I S H J O U R N A L O F E N T O M O L O G Y VOL. 69:143-153 Gdynia 31 July 2000 First Phylinae (Heteroptera: Miridae) from Baltic amber ALEKSANDER HERCZEK Department ofZoology, Silesian University, Bankowa 9,40-007 Katowice, Poland e-mail: herczek~us.edu.pl ABSTRACT. Fossil Miridae ofthe subfamily Phylinae from Baltic amber are reported for the first time. A new genus Hallodapomimus gen. n. including two new species H. elektrinus sp. n. and H. succinus sp. n. are described and illustrated. The new genus is included in the tribe Hallodapini. KEY WORDS: Heteroptera, Miridae, Phylinae, Hallodapini, Baltic amber, fossil plant bugs. INTRODUCTION Most reports on heteropteran amber inclusions of the family Miridae concern representatives of the subfamilies Isometopinae and Cylapinae (CARVALHO 1966, 1985, CARVALHO & POPOV 1984, GERMAR & BERENDT 1856, JORDAN 1944, HERCZEK 1991a, 1993, HERCZEK & POPOV 1997a, b, PoPov & HERCZEK 1993). Species which belong to other mirid subfamilies have seldom been described (HERCZEK 1991b, HERCZEK & GORCZYCA 1991, HERCZEK & POPOV 1992), and there are no data on the representatives of Phylinae (in spite of available inclusions), even though this group has been studied extensively (e.g. by SCHUH 1974, 1984). This shortage seems to be resulted from the large number of extant genera, which constitute the latter subfamily (about 300), and to the wide distribution of their representatives, which occur in tropical, subtropical and temperate zones (ScHuH & SLATER 1995). The situation is firther complicated by the fact that in the analysis there are important characters ofgenitalia, which makes a comparison of fossil and recent forms difficult. The Phylinae, like Mirinae and Orthotylinae are rare among amber inclusions. The species described represent the tribe Hallodapini. The tribe sometimes is included in the subfamily Hallodapinae, sensu WAGNER 1973. Since both sexes ofthe same species have been found in amber, it has been established that dimorphism, frequent in recent Miridae, occurs also in this group. Moreover, certain characters have been observed 144 Polskie Pismo Entomologiczne 69 (2) which make bugs similar to ants (e.g. the basal part of abdomen narrowed), which again is typical of many recent representatives of Hallodapini, Leucopterophorini, Auricillocorini, Pilophoririi. Acknowledgements I would like to thank Dr. Wolfgang Weitschat and Mr. Jens Holt for the loan of amber inclusions. I also thank Mr. Jacek Serafin who kindly helped me to prepare the amber for study and also for the loan of specimens. Special thanks are due to Dr. Yu.A. Popov for his valuable suggestions and improvements ofthe manuscript. SYSTEMATIC PART Genus: Hallodapomimus HERCZEK, 1998 Type species: Hallodapomimus elektrinus sp. n. by present designation. Diagnosis The representatives of the genus Iallodapomimus differ from other Baltic amber Miridae in the shape of pronotum, the width of pronotal collar and the pattern of pale patches on hemelytra. The arcuate incision of the lateral margins of hemelytra, make bugs resemble ants. Derivatio nominis The generic name has been coined from the name ofthe recent genus Hallodapus and a Latin word mimus, which refers to similarity. Description Body length up to 6.5 mm, lateral margins of hemelytra slightly notched in their mid part. Body almost smooth, covered with sparse, short, clinging hairs. Hemelytra with two pale yellow patches, one close to the wing base reaches mid part of clavus, the other one in the basal part of cuneus. Head subvertical to subhorizontal, convex in the hind part. Eyes relatively big reaching half height of head and almost touching the anterior margin of pronotum. Vertex slightly beneath the upper margin of eyes. Foveae antennalis situated below 2/3 eye height, almost touching the inner margin ofeye. Antennae covered with very short, clinging setae, first antennal segment slightly longer than head, second segment almost cylindrical or club-shaped. Rostrum relatively short, reaching coxae of hind legs, first rostral segment touching the anterior margin of prostemum. Other segments equal in length. Pronotum 1.5 times broader than long in basal part, in the apical part strongly narrowed, collar-like. Latero-posterior angles rounded, slightly bevelled and flattened. Calli distinct, moderately convex. Collar distinct, flattened. Mesoscutum moderately exposed, scutellum slightly wider than long, markedly convex, separated from mesoscutum by a transverse dent. Hemelytra with radial and claval veins very weakly marked. Cuneus HERCZEK A.: First Phylinae (Heteroptera: Miridae) from Baltic amber 145 relatively long, about 1.5 times longer than broad. Membrane hazy, delicately creased along the long axis, with two distinct, closed cells (the smaller one narrow and elongated). All femora slender, elongated; hind femora extending slightly beyond abdomen. Tibiae with two rows ofspines on inner surface; length ofspines less than diameter oftibiae. First tarsal segment swollen, almost twice as long as the next one and subequal in length to third tarsal segment. Claws thicker at base, moderately crooked; parempodia hair-like, parallel; pulvilli very small. Hallodapomimus elektfinus sp. n. Hallodapomimus elektrinus: HERCZEK 1998, nom. nud. Description Male. Macropterous form. Body elongated. Body ground colour dark brown. Hemelytra with two creamy patches: one close to the basal part ofwing covers corium, the mid part of clavus and reaches commissura clavalis, the other occupies half ofthe basal part of cuneus. Apical part ofscutellum pale. Dorsal surface smooth, impunctate, covered with sparse, very short and clinging setae. Head subvertical, almost twice as broad as long, clypeus distinct, protruding above frons. Genal cones distinct. Eyes relatively large, slightly protruding sidewards, somewhat elevated above the vertex surface and slightly removed from the anterior margin of pronotun. Antennae inserted above the lower margin of eye, at 2/3 its height. Fovea antennalis touches the inner margin of eye. Second antennal segment almost cylindrical (only slightly expanded apically). Third segment almost twice as long as the fourth one; both thinner than the second. Rostrum relatively short, reaching hind coxae. All rostral segments (except the first one, which is somewhat shorter) are equal in length. Pronotum tapers strongly at 1/3 its length and forms a collar-like structure. Collar distinct, broad and flat. Calli distinct, slightly convex, separated in the middle, reaching the lateral margins of pronotum. Mesoscutum moderately exposed. Scutellum convex, more than twice as long as mesoscutum. Commissura clavale slightly longer than 1.5 length- of scutellum. Hemelytra with the lateral margins almost parallel, slightly concave at 1/3 their length (the widest part at a level with cuneal fracture). Membrane hazy, delicately creased along the long axis, with two closed cells: the smaller one narrow and elongated, the other with the posterior proximal angle rounded. Abdomen relatively narrow, slightly tapering in the basal part. All femora slender, elongated, hind femora with short spines scattered on the inner surface. All tarsi three-segmented: first tarsal segment slightly thicker than others, almost twice as long as the second one and subequal in length to third tarsal segment. Claws thicker at base, moderately crooked; parempodia parallel, hair-like; pulvilli very small. Female. Macropterous form. Body length 6.2 mm. Body ground colour brown. Hemelytra and the apical part ofscutellum with pale patches. One begins near the basal 146 Polskie Pismo Entomologiczne 69 (2) ,t Fig. 1. Hallodapomimus elektrinus sp. n., holotype, male, coil. Museum ofthe Earth, Warsaw. Fig. 2. Hallodapomimus elektrinus sp. n., paratype, female, Geologisch-Paldontologisches Institute und Museum, Universitdt Hamburg (coll. Jens von Holt). HERCZEK A.: First Phylinae (Heteroptera: Miridae) from Baltic amber 147 wing part ad occpis about 1/3 length of hemnelytra, the mid part of clavus and reaches commissura clavalis, the ote covers the basal half of cuneus. DoMsal surface smooth, cveed, wifth sparse, ort, clinging set&e. Frons, clypeus and first and second rostral sments covered with somewhat longer and denser seta. Head subhorizontal, the Posteior of vetex slightly convex. Diameter of eye smaller than weakly convex vertex, eye occupies somewhat more than half height of head, its posterior margin almost straight In lateral aspect clypeus does not protide above frons. Buccula and genae broad. hnta~ inserted at 2/3 eye height, foveae antennalis touch the inner margin of eye. First antal sem long, longer an had, second segment clib-shaped, third segment about 2.3 tines longer than the fourth one. All segments covered with short, clinging setae. Collar brd flatened, brader th the diameter of first antennal segment. Pronotum tapers in the apical third of its length; this part is covered by flat calli distinctly sparated from the posteror, stongly elongated part of pronotu. Latero-posterior angles bevelle the posterior marg weakly convex, with a shallow notch in the mid part. Mesosctwn covered, the exposed part 5 times shorter than the slightly convex scutellumn. Coriwn weakly dented at sides in te middle of its length. The widest body part slightly above cumeal fare, which forms acnte angl with the long body axis. Membrane with two distict, clsd cells, the bigger almos rectangular. Abdomen tapers basally, extends in the apicl put Hind femora slightly loner than abdomen,