Andrena (Simandrena) heinzi, Dubitzky, Andreas, 2006

Dubitzky, Andreas, 2006, New palearctic species of the bee genus Andrena (Insecta: Hymenoptera: Andrenidae), Zootaxa 1284, pp. 1-27 : 23-26

Andrena (Simandrena) heinzi sp. n.

( Figs 3 A, F, 4C)

Female. BL: 8.0– 9.1 mm (8.4 mm). FWL: 5.8–6.6 mm (6.2 mm).

Structure. Head 1.2 times broader than long in frontal view. Galea shiny, finely tesselate, without distinct punctation. Mandibles bidentate. PLR nearly 2.5 times broader than long, trapezoid, smooth and shiny. Apical margin of PLR about 0.6 times as wide as basal margin, with broad emargination in the middle. Clypeus weakly shiny, about 1.5 times as broad as long, distinctly tesselate with indistinct punctation (=1). POA slightly tesselate, weakly shiny with dense coarse punctation (<1). SCA dull, minutely wrinkled, with indistinct punctation. Frons dull with irregular longitudinal ridges between indistinct punctation. Vertex tesselate to finely wrinkled, dull to weakly shiny with indistinct punctation. Hind margin of vertex rounded. Distance from hind margin of LO to hind margin of vertex about 1.5 times OD. FOV especially upper part extremely broadened, maximum width about 2.7 times OD, reaching from hind margin of LO below upper margin of clypeus. GA tesselate, shiny with indistinct punctation, about as wide as compound eye in lateral view. AS 3 about 1.7 times as long as broad, as long as AS 4 and AS 5 together. AS 4 and AS 5 distinctly broader than long (1.2 and 1.3 times as broad as long respectively), AS 6– AS 11 about as long as broad, AS 12 about 1.6 times as long as broad. Pronotum strongly tesselate, dull to weakly shiny, with inconspicuous punctation (1). Scutum anteriorly as well as along hind margin, strongly tesselate, dull. Disc of scutum weakly tesselate to nearly smooth, shiny with coarse and distinct punctation (1). Scutellum nearly smooth on disc, strongly tesselate along margins, with irregular, coarse punctation. Metanotum strongly tesselate to granulate, dull. PT dull, finely wrinkled, strongly granulate between. DLP coarsely wrinkled, dull. LP finely tesselate, weakly shiny, impunctate. Mesepisterna finely tesselate, weakly shiny, with indistinct coarse punctation (<1). Claws of all legs distinctly bidentate. T finely tesselate, shiny, with dense punctation (<0.5), punctation most dispersed on T1 (=1). Dorsolateral convexity of T weakly developed apically smooth and shiny. Pygidial plate tesselate, dull with weakly elevated area in the middle. S2–5 strongly tesselate dull to weakly shiny with coarse dense punctation (<0.7). S6 tesselate dull, with indistinct punctation.

Integument colour. Black to blackish­brown except the following: Proboscis dark brownish. Mandibles dark reddish apically. AS 3 and AS 4 apically on underside with small yellowish­brown maculation, AS 5– AS 12 completely yellowish­brown on underside. Tegulae dark brownish transparent. Stigma bright yellowish­brown transparent, with dark brownish hind margin. Legs dark brownish except for bright yellowish­brown on distal tarsal segments of front leg, apical part of tibia and tarsus of mid leg as well as tibia and tarsi of hind leg. Claws of all legs yellowish­grey basally, bright brownish apically. Spurs yellowish­grey. Marginal zone of T1–5 brownish transparent. Pygidial plate dark reddish basally, black apically.

Pubescence. Head as well as lateral parts of thorax with yellowish grey pubescence of varying length. FOV bright yellowish­grey all over. Scutum, scutellum and metanotum of fresh animals with yellowish­brown pubescence of medium­long (about as long as metanotum), strong hairs. PT bare, DLP with long yellowish­grey hairs. Propodeal corbicula complete, anterior and dorsal fringe consisting of long and dense yellowish­grey hairs. LP bare. Pubescence of legs bright yellowish­grey. Flocculus of trochanter of hind leg of long and dense silvery­white hairs. T1 with two short yellowish­white hair patches lateroapically and few dispersed yellowish­grey hairs basally. T2 with broadly interrupted yellowish­white apical hair fringe. T3 and 4 each with complete yellowish­white hair fringe apically, short and dispersed brownish hairs basally. Prepygidial as well as pygidial fimbria with bright yellowish­brown pubescence. S2–6 with sparse yellowish­grey pubescence forming weak hair fringes along apical margin. Disc of S2 with sparse brush of medium­long hairs.

Male. BL: 7.1–7.5 mm (7.2 mm). FWL: 5.1–5.6 mm (5.4 mm).

Structure. As in female except for usual secondary sexual characteristics and as follows: Head oval, 1.3 times broader than long in frontal view. Mandibles rather short distinctly bidentate. PLR shiny, rectangular, nearly twice as broad as long. Apical margin of PLR with weak emargination in the middle. Clypeus about 1.6 times broader than long. GA 1.2 times as wide as compound eye in lateral view. Frons with stronger longitudinal ridges than in female. Vertex more rugose than in female. AS 3 1.4 times as long as broad, about as long as AS 4. AS 4 and AS 5 of equal length, nearly 1.3 times as long as broad. AS 6– AS 12 nearly 1.4 times as long as broad, AS 13 nearly twice as long as broad. Disc of scutellum stronger tesselate, punctation therefore more indistinct than in female. PT stronger wrinkled than in female. Claws distinctly bidentate. T less tesselate than in female, with more dispersed punctation (1). S2–6 tesselate, shiny with more dispersed punctation than in female (=1). S7 and 8 as shown in Figs 3 A and F. Male genitalia as in Fig. 4 C.

Integument colour. Black to blackish­brown except the following: Proboscis darkbrownish. Mandibles apically reddened. AS 4– AS 13 dark brownish on underside. Legs dark brownish, except for bright yellowish­brown distal tarsal segments of front leg and tarsi of mid and hind leg. Often also distal part of mid and hind tibia with yellowish­brown maculation of varying size. Spurs yellowish­grey. Marginal zone of T1–5 brownish transparent. S brownish.

Pubescence. Head with long yellowish­brown pubescence, distinctly more colourful than in female. Scutum, scutellum and metanotum with yellowish­brown pubescences of rather long hairs. T1 with sparse pubescence of medium­long yellowish­grey hairs. Apical hair fringes of T2–4 more sparse and indistinct than in female. T5 and 6 with dense yellowish­brown pubescence of long stiff hairs. S with sparse, short to long yellowish­grey pubescence.

Diagnosis. A. heinzi is placed in subgenus Simandrena by the following characters: Propodeal corbicula of females with distinct anterior and dorsoposterior hair fringe; LP of females completely bare; flocculus of trochanter of hind leg consisting of long and dense fringe of strongly curled hairs; clypeus of males dark coloured; shape of male genitalia, S7 and S8; penis valve of male genitalia without lateral lamella. Within subgenus Simandrena, the new species is most similar to the Central Asian A. (Simandrena) sarta Morawitz, 1876 , and the western palearctic species A. (Simandrena) mehelyi Alfken, 1936 and A. (Simandrena) combinata ( Christ, 1791) . It can be distinguished from A. sarta by the following characters (character states of A. sarta given in parentheses; all characters listed below refer to females only, because no males of A. sarta were available for comparison): clypeus strongly tessellated on disc, dull (smooth and shiny on disc); hind margin of vertex rounded (carinate); distance from hind margin of LO to hind margin of vertex about 1.5 times OD (nearly as wide (0.8 times) as LO); scutum and scutellum distinctly tesselate, weakly shiny on disc (weakly tesselate to smooth, strongly shiny); punctation on T more fine and dispersed (punctation more coarse and dense); pubescence of head, lateral parts of thorax and apical hair fringes of metasoma yellowish­grey (whitish); pubescence of scutum, scutellum and metanotum bright yellowish brown of medium­length (whitish, short); only apical hair fringes of T3 and 4 complete, apical fringe of T2 broadly interrupted (apical hair fringes complete on T2–4); distal tarsal segments of front leg, apical part of tibia and tarsus of mid leg, as well as tibia and tarsi of hind leg, bright yellowish­brown (blackish­brown); AS 5– AS 12 bright yellowish­brown on underside (dark brownish). The new species can be separated from A. mehelyi and A. combinata as follows (character states of A. mehelyi and A. combinata given in parentheses): AS 5– AS 12 of female yellowish­brown on underside (blackish­brown); male AS 3 about 1.2 times as long as broad, distinctly longer (1.4 times) than AS 4 ( AS 3 as long as broad, slightly shorter (0.9 times) than AS 4); clypeus with impunctate median line (female), transverse wrinkles absent in both sexes (impuctate median line absent, strong transverse wrinkles developed); FOV broad, about 2.9 times OD (distinctly narrower, 2.6 times OD); PT of female with few wrinkles basally, mainly granulate (nearly completely coarsely wrinkled, only apically granulate); tarsi of all legs and hind tibia yellowish in female (blackish); lateroapical hair fringes of T1 and laterobasal hair fringes of T2 absent in female (distinctly developed); prepygidial, as well as pygidial fimbria, bright yellowishgrey (greyish­brown); punctation on T minute, dense in both sexes (coarse, honeycombed); dorsal lobe of gonocoxite weakly developed (absent).

Etymology. This species is named in honor of my beloved father Heinz Dubitzky for his wonderful support during the duration of my studies and for his broad interest in the natural world.

Type material. Holotype, Ψ, Kazakhstan, Karatau, 16 km NO Kentau, Biresek­Tal, auf Ferula, 5.V.1994, leg. W. Dolin, ex coll. Grünwaldt ( ZSM). Paratypes: 5 ΨΨ, 2 ɗɗ, same data as holotype ( ZSM, CAD); 2 ΨΨ, 4 ɗɗ, same data as holotype except 7.V.1994 ( ZSM, CAD); 1 Ψ, same data as holotype except 12.V.1994 ( ZSM); 1 Ψ, Kyrgyzstan, Tschatkal, G. K., Kanysch­Kija, 1700 m, 4.VI.1998, leg. W. Dolin, ex coll. Grünwaldt ( ZSM).

Figures

FIGURE 4. Male genitalia, part I, left dorsal, middle lateral and right ventral view. A: A. susanneae sp. n.; B: A. planti sp. n.; C: A. heinzi sp. n. Scale bars: 250 µm.

FIGURE 3. S 7 (A – E, ventral side) and S 8 (F – K) of male. A: A. heinzi sp. n.; B: A. planti sp. n.; C: A. susanneae sp. n.; D: A. yangi sp. n.; E: A. cheni sp. n.; F: A. heinzi sp. n. (dorsal side); G: A. planti sp. n. (ventral side); H: A. susanneae sp. n. (left dorsal, right ventral side); I: A. yangi sp. n. (left dorsal, right ventral side); J: A. nantouensis sp. n. (left dorsal, right ventral side); K: A. cheni sp. n. (left dorsal, right ventral side). Scale bars: 250 µm.