Andrena (Micrandrena) tenuistriata Pérez, 1895

Dardón, María José, Torres, Félix & Ornosa, Concepción, 2014, The subgenus Andrena (Micrandrena) (Hymenoptera: Andrenidae) in the Iberian Peninsula, Zootaxa 3872 (5), pp. 467-497 : 491-493

Andrena (Micrandrena) tenuistriata Pérez, 1895

Andrena tenuistriata Pérez 1895:44 (Lectotype examined) Andrena pilosella Destefani 1889:207

Diagnosis. Individuals of this species are characterized by an facial fovea that is clearly narrowed in the lower half. The integument of the body looks weak. The scutum and scutellum have scarce and shallow PPs that are intermingled with the microsculpture.

Redescription based on lectotype. Female: Body length 7–8 mm. The body has a dark brown integument. There is a scarce pubescence that is whitish to yellowish-white in color.

Head: The genal area, frons, paraocular area, and supraclypeal area have a shiny microsculpture. On the genal area, the hypostoma has thin, large, and separated striations. The frons and paraocular area also have fine striations, and under the facial fovea, the smooth, shiny integument has PPs. The area bounded by the apical margin of compound eye, the lateral ocellus, and the top edge of the occiput have a microsculpture and obvious PBHs. The facial fovea is long, clearly exceeding the lower edge of the antennal socket, and it is narrowed in the lower half. The facial fovea has a velvety pubescence that is dark in color (with artificial light it appears whitish-iridescent). The antennae are brown, although towards the apex they are paler, A3≈A4+A5. The clypeus is convex, and slightly flattened at the center, with an absent microsculpture and shiny integument in the apical area. The top has shallow PPs that become coarse toward the lower region, E=1–3. The process of labrum is black, wider than it is long, and surrounded by yellow hairs. The head has a whitish pubescence equal in length to A1, but in the genal area and paraocular area it becomes longer.

Mesosoma: The pronotum has a dull microsculpture, with PPs and a pubescence in the middle area. The scutum and scutellum also have a microsculpture that is brighter in the middle zone. Both have observable, but shallow PPs, except in the anterior region of the scutum where they are more dense and obvious, E=1–4. The mesepisternum has a smooth microsculpture and bulky PBHs that are whitish and reach the length of A1, E=1–2. The metanotum has a coarse-dull microsculpture with PPs. The propodeal triangle is defined with a central area having a fine granular appearance, while about 0.3 of the top space has short and thick striations. The rest of the propodeum has a microsculpture and small clear PBHs. The wings have a brown tone, and at rest they reach the apex of the metasoma. The veins are brown in color. The legs are also brown, and the mediotarsus, distitarsus, and tarsal claw are paler. There is a whitish pubescence, except on the inner side of the basal area of the tibia, which is brown. The mesosoma has a short pubescence on the sides of the scutum, however, over the scutellum and metanotum it is long and visible.

Metasoma: The metasomal terga have a fine, smooth, and shiny microsculpture, with small, obvious PPs that are more evident on the sides (some individuals have more distinct PPs on the disc). The metasomal terga, at least T2, have the same microsculpture as in the marginal zones. The marginal zones are not marked, and occupy 0.4 times the length of the terga, especially in T1 and T2. The metasomal bands of whitish hair are exceptionally thin, and in T2 and T3 they are widely discontinuous, and less clear in T4 (in some specimens they are imperceptible). The disc has apical bands of hair covering the entire width of the terga that is scarce and interrupted at T2 and T3, while in T4 it is complete. T5 is covered with a yellowish pubescence, whereas the sides have whitish hairs as in the rest of the metasoma.

Male: Body length 5–6 mm. The integument is black with a brown metasoma and legs. The pubescence is yellow-brown to yellow-gray, and the metasoma has scarce hair. In general, the male is similar to the female in morphology.

Head: The frons and paraocular area have striations which are stronger than those of the female. The antennae are thick and orange, with A3=A5 but A3<A4+A5. The clypeus is convex, not flattened in the center, and a little shinier than in the lower zone, while the PPs are distinct and scarce, E=1–2.5. The process of labrum is small and occupies, at its base, at least 0.25 of the lower margin of the clypeus, however, in some individuals it is slightly higher. The head has a whitish-brown pubescence, the frons and genal area have some dark brown to black hairs, and the lower part of the genal area has whitish hairs that are the length of A1.

Mesosoma: The scutum has a microsculpture that is less bright than in the female, and the PPs are weak and small, E=1–4. The propodeum has clear PPs as in the mesepisternum, the latter of which has whitish dense hairs that reach the length of A1. The wings at rest reach the apex of the metasoma. The legs are brown, but slightly paler than the color of the head; however, the mediotarsus, distitarsus, and tarsal claw are orange. The legs have a whitish pubescence, and the inner side of the basitarsus has yellow hairs. The scutum and scutellum have a whitish pubescence intermingled with brown hairs.

Metasoma: The metasoma is shiny, with a smoother appearance than in the female. The PBHs are shallow, from the T1, and very small with white hairs that are more evident than in the female. T2 has a microsculpture that is equal to the disc and marginal zone. The marginal zones are shorter than in the female, and the length is 0.3 times the length of the terga. The metasomal bands of whitish hairs are the same as in the female, and are clear, narrow, and widely discontinuous. The male genitalia have a simple constitution similar to that of Andrena minutula ( Kirby, 1802) . The gonostylus is elongated and the penis valve reaches the maximal width of the gonostylus.

Comment. Gusenleitner & Schwarz (2002) redescribed this species and indicated, as one of the main attributes, the shiny lower margin of the clypeus because of a weak or absent microsculpture. After reviewing a large number of specimens, it can be noted that this characteristic appears in most of these specimens, although some individuals show a microsculpture over the entire surface of the clypeus, and an absence of a particular brightness in the lower extreme. Like Andrena abjecta Pérez, 1895 , A. tenuistriata presents a morphology that is different from the rest of the species of the subgenus Andrena (Micrandrena) in the Iberian Peninsula, and seems close to the subgenus Andrena (Distandrena) . However, the ornamentation with thick striations in the propodeal triangle, the shape of the process of the labrum, and the morphology of the male genitalia correspond to the features of Andrena (Micrandrena) and, therefore, should remain there.

Specimens examined.

Andrena tenuistriata Pérez 1895

Lectotype: France:Bord’, 1 ♀, undated, MPARIS, EY0000002011, Wildbienen Kataster 0 61024 scwe480. Paralectotype: Spain: Barcelona, 1 ♀, undated, OLINZ. Other material: Iberian Peninsula: Spain: Alicante: Alicante, 1 ♀, undated, Dusmet, J. leg., MNCNM; Arneva, 1 ♀, 02-IV-1934, Andréu leg., MNCNM. Almería: Berja, 50 Km. W., 1 ♀, 21-28-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Las Negras, 50 Km., 7 ♂, 27-IV- 2003, Halada, J. leg., MJ. Dardón det., OLINZ; Sierra Alhamilla, Lucainena, 7 ♀ and 1 ♂, 25-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Sierra Alhamilla, 50 Km. E, Nijar, 4 ♀ and 1 ♂, 20-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Sierra de María, 25 Km. W., Lorca, 9 ♀, 21-V-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Sierra Filabres, 9 Km. E., Albánchez, 2 ♀, 23-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Sierra Filabres, Albánchez, 1 ♀, 23-IV-2003 / 1 ♀ and 1 ♂ 24-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ. Ávila: Candeleda, 1 ♀, V-1941, Escalera, M. leg., MNCNM. Barcelona: Canet de Mar, 1 ♂, 28-III- 19631 and 1 ♂, 22-III- 1965, Vergés, F. leg., OLINZ; Balenyá, 1 ♂, 15-V-1922, Villarubia leg., OLINZ. Cáceres: Hervas, 1 ♀, 29-IV- 1987, Barrios, J. leg., MJ. Dardón det., USAL. Cuenca: Cañizares, 1 ♀, undated, Selgas leg., MNCNM. Córdoba: El Soldado, 1 ♀, 23-IV-1927, Seyrig leg., MNCNM; El Soldado, 2 ♂, undated, Seyrig leg., MNCNM. Granada: Sierra Sagra, Santiesteban, 1 ♂, undated, Cabre, J. leg., MNCNM; Sierra Nevada, Lanjarón , 3 ♀, 04-V-2003, Halada, J. leg., MJ. Dardón det., OLINZ. Huelva: Calañas, 1 ♀, 13-IV-1982, Schacht leg., OLINZ; Huelva, 1 ♀, V- 1927, Dusmet, J. leg., MNCNM; Huelva, 1 ♀, V-1927, Dusmet, J. leg., OLINZ. Madrid: Alberche, 1 ♀, undated, Mercet, G. leg., MNCNM; Casa Campo, 1 ♀, 04-V-1963, Llorente, R. leg., MJ. Dardón det., UCM; Cerro San Pedro, 1 ♀, 11-V-1979, P-Iñigo. C. leg., F. Torres det., USAL; Chamartín, 1 ♀, 23-III-1900 and 1 ♂, 05-IV-1901, MNCNM; Collado Mediano, 4 ♀, 07-VII-1979, P-Iñigo. C. leg., C. P-Iñigo det., UCM; El Chaparral, Navalafuente, 2 ♀, 18-V-1979, P-Iñigo. C. leg., C. P-Iñigo det., UCM; El Escorial, 1 ♀, 14-II-1942, Dusmet, J. leg., MNCNM; El Escorial, 1 ♂, 25-IV-1933, Dusmet, J. leg., OLINZ; El Pardo, 1 ♀, undated, Gil, J. leg., MNCNM; El Pardo, 1 ♀, 05-IV-1908, Dusmet, J. leg., OLINZ; El Robledo de Orante, 1 ♀, 09-V-1979, P-Iñigo. C. leg., C. P-Iñigo det., UCM; La Fortuna, 1 ♀, V-1928, Dusmet, J. leg., MNCNM; Los Molinos, 2 ♀, undated, Mercet, G. leg., MNCNM; Madrid, 4 ♀, undated, Mercet, G. leg., MNCNM; Madrid, 1 ♂, 15-V-1915, Mercet, G. leg., MNCNM; Montarco, 1 ♀, undated, Mercet, G. leg., MNCNM; Pedriza, Cerro Ortiyeso?, 1 ♀, 23-V-1979, P- Iñigo. C. leg., C. P-Iñigo det., UCM; Rivas, 1♀, 01-V-1920, Dusmet, J. leg., MNCNM; Robledo de Chavela, 1 ♂, 09-V-1979, P-Iñigo. C. leg., F. Torres det., USAL; Sierra de Guadarrama, 1♀, 14-V-1919, Dusmet, J. leg., MNCNM; Villaverde, 1 ♂, 17-III-1906 / 1 ♀, 31-III-1908 / 1 ♂, 26-III-1912, Dusmet, J. leg., OLINZ; Villaviciosa, 2 ♀, undated, Escalera, M. leg., MNCNM. Málaga: Ronda, 20 Km. NE, 1 ♂, 30-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Yunquera, 40 Km W., 5 ♀, 29-IV-2003, Halada, J. leg., MJ. Dardón det., OLINZ, at 800 masl. Murcia: Cartagena, Mar Minor, 30 Km. E., 3 ♀ and 7 ♂, 13-V-2003, Halada, J. leg., MJ. Dardón det., OLINZ; Sierra de Espuña, 20 Km. SW, 1 ♀ and 1 ♂, 11-V-2003, Halada, J. leg., MJ. Dardón det., OLINZ. Pontevedra: Vigo, 1 ♀, 23-IV-1926 and 1 ♂, 25-IV-1926, Trautmann, W. leg., MNCNM. Salamanca: Bejar Ca. Aldeacipreste, 2 ♂, 04-II-1978 / 1 ♀, 05-III-1978 / 1 ♀, 13-III-1978, Gayubo, S.F. leg., MJ. Dardón det., USAL, at 780 masl. Sevilla: Mar?, 1 ♀, 11-V-1995, Juísel? leg., MJ.Dardón det., OLINZ. Tarragona: Alcanar, 1 ♀, V-2002, Kadlec, J. leg., MJ. Dardón det., OLINZ; Tortosa, 50 Km. W., 2 ♀, 20-III-1995, Bareŝ, J. leg., MJ.Dardón det., OLINZ. Valencia: Bigastro, 1♀, 22-IV-1924, Andréu leg., OLINZ; Orihuela, 1 ♀, 01-III-1906, Dusmet, J. leg., MNCNM; Orihuela, 1 ♀, 08-IV-1926, Andréu leg., OLINZ; Orihuela, Escalona, 1 ♀, 08-V-1926, Andréu leg., OLINZ. Valladolid: La Armadilla, Cogeces del Monte, 1 ♂, 04-VI-1983, Asensio leg., USAL. Zamora: Toro, 1 ♀, 29-VI- 1982, Asensio leg., USAL; Zamora, 1 ♀, 23-VIII-1986, Unegaszo, M. leg., MJ. Dardón det., USAL. Zaragoza: Pina de Ebro, 1 ♀, 02-IV-1989 / 1 ♀, 17-III-1990 / 1 ♀, 22-IV-1990 / 1 ♀, 20-II-1991 / 1 ♀, 0 9-III-1991 /1 ♀, 07- V-1991 / 1 ♀, 20-III-1992 / 3 ♀, 10-IV-1992 / 3 ♀, 11-IV-1992, Blasco, J. leg., MJ. Dardón det., USAL; Zaragoza, 1 ♀, 09-III-1949 and 1 ♂, 28-IV-1933, OLINZ. Portugal: Lisbon: Lisbon, 1 ♂, 18-V-1952 / 1 ♀, 08-II-1953 / 1 ♀, 29-III-1953, Andrade, R. leg., OLINZ.