Andrena (Brachyandrena) pinguis, Ariana, Ardeshir, Scheuchl, Erwin, Tadauchi, Osamu & Gusenleitner, Fritz, 2009

Ariana, Ardeshir, Scheuchl, Erwin, Tadauchi, Osamu & Gusenleitner, Fritz, 2009, A taxonomic revision of the subgenus Andrena (Brachyandrena) (Hymenoptera: Andrenidae), Zootaxa 2281, pp. 21-39 : 26-29

Andrena (Brachyandrena) pinguis sp. n.

( Figs. 3 A, 5, 6)

Female (holotype). BL= 8 mm, WL= 7 mm

Color. Flagellum pale reddish brown; mandible with apical half reddened; wing membrane subhyaline; veins and pterostigma reddish brown; posterior part of tegula translucent, reddish brown, anterior part black; tarsomeres except of basitarsi, reddish brown; the rest of body black.

Pubescence. Hairs on head and thorax short, not dense; those on clypeus 300–500 µm long, white; those on antennal area dense, dull white; those on vertex 300–400 µm, pale brownish; those on genal area short (100–200 µm), dull white; facial fovea light brown. Hairs on mesoscutum and scutellum very short (50–100 µm), yellowish, peripherally with longer scale-like hairs; those on mesepisternum longer (150–200 µm), dull white; propodeal corbicula not well developed, with dull white long plumose dorsal fringes, internal area with simple hairs, without anterior fringes; trochanteral flocculus not perfect, whitish; femoral flocculus perfect; tibial scopa relatively short, with more or less loose simple hairs; whitish. Hairs on metasomal terga scanty, T1–2 with broadly incomplete hair bands, T3–4 with complete whitish hair bands. Caudal fimbria yellowish brown, S2–5 with whitish subapical fimbriae.

Structure. Head: HL/HW = 0.8, HW:MsW:MtW = 1.1:1:1.2. Vertex nearly wide, 1.5 times as wide as ocellar diameter, densely punctate; surface above compound eyes with dense punctures but the interval area is visible; OOD:POD:OCD = 2:1.5:0.5; FL1 = FL2+FL3, FL2 = FL3; inner margin of eyes subparallel; facial fovea in upper part occupying 1/2 of distance between compound eye and lateral ocellus, not exceeding the lower level of antennal socket, FVL = 1 mm, FVW = 0.25 mm, facial quadrangle as long as broad (nearly 1:1). Face above antennal fossae reticulate without longitudinal rugulae, interrugal space smooth and shiny. Clypeus slightly convex, with slanting PP (Pd = 55 µm), IS<0.1, without clear impunctate median line, shiny and smooth; CPL = 0.8 mm. Process of labrum moderate, emarginated, shiny; galea truncate, weakly tessellate and without distinct PP; the last maxillary palpi (MXP3–6) distinctly protruding beyond apex of galea; lower paraocular area with very dense irregular, coarse PP (Pd = 55 µm), IS<0.1. Malar space linear. Genal area narrower than eye (2:2.5), surface smooth and shiny with very dense and irregular, nearly coarse PP (Pd = 35 µm, IS<0.1 near eye.

Mesosoma: Pronotum without humeral angle, with lateral ridge, laterally roughened by small rugulae, the rest smooth and shiny with scattered PP. Mesoscutum and scutellum smooth and shiny with dense PP (Pd = 20 µm), IS<0.1. Propodeal enclosure medium size, not well indicated by boundary line, strongly rugose with carina, interrugal surface smooth and shiny, dorsal area similar but with weaker rugose. Mesepisternum with dense PP, anterior part reticulate, posterior part with coarse PP, surface smooth and shiny; anterior part of tegula smooth, with PP.

Metasoma: Metasomal terga with dense, small PP (Pd = 20 µm), IS<0.1, smooth and shiny; posterior depression of T1–4 distinct, with smaller PP; pygidial plate V-shaped, with microscopic PP, without internal raised area; S2–5 smooth and shiny with fine and deep PP.

Male [ Turkey, Konya, 20 km SO Seydisehir 1000m, 5.viii.1991 (M. Halada)]: BL = 5.7 mm, WL = 5.2 mm.

Color. Flagellum reddish brown beneath; mandible with apical third reddened; wing membrane subhyaline, veins and pterostigma brown; posterior part of tegula translucent, brown, anterior part black; the rest of body black.

Pubescence. Hairs on head and thorax short, not dense; those on clypeus 100–200 µm, dull whitish; those on antennal area dense, dull whitish; those on vertex yellowish, very short (100 µm); those on genal area pale yellowish; Hairs on mesoscutum and scutellum, mesepisternum, metasomal and sternal terga as in female but hair bands on metasomal terga yellowish.

Structure. Head: HL/HW = 0.8, HW:MsW:MtW = 5.6:5:5.3. Vertex wide, two times as wide as ocellar diameter, densely punctate; OOD:POD:OCD = 1.5:1.5:1; FL1<FL2+FL3, FL2<FL3; inner margins of eyes as in female; facial quadrangle longer than wide. Face above antennal fossae reticulate without longitudinal rugulae, interrugal space smooth and shiny. Clypeus as in female; CPL = 0.6 mm. Process of labrum quadrangle, apically rounded and crescent-shaped; galea and last three maxillary palpi (MXP3–6) as in female; lower paraocular area and Malar space as in female. Genal area as in female but PP (Pd = 10–20 µm). Mandibles not crossing at rest.

Mesosoma: Pronotum, Mesoscutum and scutellum as in female. Propodeal enclosure small, indicated by boundary line, strongly rugose with carina, interrugal surface smooth and shiny; mesepisternum with dense PP, anterior part reticulate, posterior part with coarse PP, surface smooth and shiny; tegula smooth, anterior part with PP.

Metasoma: Metasomal terga and sterna as in female; genitalia and S7–8 as shown in Fig. 6 .

Variation. Ventral side of flagellum shows weak differences in the extension of the red color. Flagellum 4 is completely black in some specimens, in others it also has a red spot. The notch or emargination of the process of labrum is deeper in some specimens than the others. The variation in sculpture is rather weak. The length of impunctate margin of terga differs from a width of 4 to 6 puncture diameters.

Etymology. The name given to this species refers to the strong punctuation of the tergites; “ pinguis ” is a Latin term for rough and strong.

Type material: Holotype: female, Turkey, Siirt, 15 km W. Siirt, 6.vi.1980, leg. Max. Schwarz. Depository: Biologiezentrum des Oberösterreichischen Landesmuseums (OLL), Linz, Austria.

Paratypes: 1 male, Turkey, Konya, 20 km SO Seydisehir 1000m, 5.viii.1991 (M. Halada); 1 females, Turkey, Konya, sille b., 8.vi.1972 (J. Heinrich); 1 female, Akbes,(? Syria); 1 female, Turkey, Antalya, between Gölova and Korkuteli, 36°48’31"N, 30°00’50"E, 1143m, 0 7.06.2006, leg. E. Scheuchl; 2 females, Turkey, Antalya, between Korkuteli and Tefenni, 37°09’30"N, 30°01’53"E, 1445m, 0 8.06.2006, leg. E. Scheuchl; 1 female, Turkey, Burdur, around Tefenni, 37°10’54"N, 29°59’13E, 1487m, 0 8.06.2006, leg. E. Scheuchl; 5 females, 2 males, Turkey, Ankara, Hacettepe University, Beytepe Campus, 16.06.2006, leg. E. Scheuchl; 2 females, Turkey, Amasia, 30 km Amasya-Mecitzu, 3.000', 0 1.08.1960, leg. K. Guichard & D.H. Harvey; 1 female, Turkey, Ankara, Temelli c. 800 m, 27.07.1992, leg. K. Guichard & D.H. Harvey.

Remarks: This new species is very similar to Andrena colletiformis Morawitz but is separated by larger distance among punctures in the upper area of compound eye in both sexes, the occiput area less concave, the stronger punctuation of the terga and the broader hair bands on them, which are complete on T3–4, and the posterior depressions, which are clearly visible at the middle.

Distribution: Turkey, Syria.

Figures

FIGURE 6. Male terminalia of Andrena pinguis sp. n.: (A) genital capsule, dorsal view, (B) genital capsule, ventral view, (C) genital capsule, lateral view; (D) S 7, (E) S 8.