Patellapis (Chaetalictus) sakagamii, Timmermann & Kuhlmann, 2009

Timmermann, Kim & Kuhlmann, Michael, 2009, Variable Selection and Inference for Multi-period Forecasting Problems, Zootaxa 2099, pp. 1-188 : 147-149

Patellapis (Chaetalictus) sakagamii sp. n. Timmermann

( Figs. 103a–g ; 104a–h )

Diagnosis. The female is unique within this species-group in having reddish metasomal terga T2–T4 (T1 often partly or completely black). Further, the female can be distinguished from those of P. spinulosa and P. timpageleri by having the surface of scutum completely reticulate. The females of P. minima and P. renosterveldi differ from that of P. sakagamii in the scale of scutellum to basal area of propodeum. The basal area of propodeum is enlarged in P.sakagamii (about 1,5 times longer than the scutellum) and about as long as the scutellum in P. minima and P. renosterveldi . The male of P. sakagamii is similar to P. pulchrinitens . Both species have a highly polished face with well separated fine punctures on clypeus and supraclypeal area. They can be distinguished by the size and structure of S7, which is much larger in P. pulchrinitens than in P. sakagamii . The males of other species belonging to this species group differ from P. sakagamii in having the face more densely punctate (especially clypeus and supraclypeal area) and less shiny.

Description

Female. Bl = 5,1–5,6mm. General habitus ( Fig. 103e ). Head. L = 1,5–1,6mm; W = 1,5–1,6mm. Head as wide as long ( Fig. 103a ). Integument black except mandibles sometimes partly reddish-brown. Face polished and with loose, greyish, erect hairs. Mandibles bidentate. Clypeus and supraclypeal area (weakly) convex in profile. Clypeus finely and sparsely punctate; surface polished. Clypeoantennal distance 0,3mm. Supraclypeal area with well separated small punctures; surface sometimes partly and finely chagreened. Paraocular area finely and sparsely punctate; surface shiny and partly sculptured. Antennae reddish-brown. Mesosoma. L = 0,9–1,0mm; W (ITS) = 1,2–1,3mm. Integument black. Scutum shiny; surface completely reticulate; disc finely and sparsely punctate (i = 2,0–2,5d) ( Fig. 103b ). Scutellum as illustrated in Fig. 103c . Scutum, scutellum, metanotum, mesepisternum and propodeum with long, greyish, erect hairs. Basal area of propodeum as illustrated in Fig. 103c ; propodeum slightly dull, with well separated minute punctures; surface completely reticulate. Marginal region of posterior truncation slightly dull; surface completely reticulate.

Wings. Hyaline. Legs. Integument brownish. Vestiture greyish to yellowish. Ts coarsely serrate, with 6–7 oblique projections ( Fig. 103f ). Bp broad; pointed apically ( Fig. 103g ). Metasoma. L = 2,7–3,3mm; W = 1,7–2,0mm. Integument reddish to brownish except the margins of T pallid brownish and pallid yellowish (usually T2–T4); T1 often (extensively) blackish; margins of T1–T4 extensively translucent. Apical hair bands on metasomal terga absent (sometimes they are weakly present on T3–T4). Prepygidial fimbria mostly yellowish. Metasomal terga as illustrated in Fig. 103d .

Male. Bl = 5,1–5,2mm. General habitus ( Fig. 104e ). Head. L = 1,5–1,6mm; W = 1,5–1,6mm. Head as wide as long ( Fig. 104a ). Integument black except mandibles sometimes partly reddish-brown. Clypeus, supraclypeal area, paraocular area and vertex covered with erect, greyish hairs. Mandibles simple. Antennae brownish-black. Flagellomeres of normal structure, not knotty. A4 as long as A3. Mesosoma. L = 1,0– 1,1mm; W (ITS) = 1,1–1,2mm. Integument black. Scutum shiny; finely and sparsely punctate (i = 2,0–3,0d); surface completely reticulate ( Fig. 104b ). Scutellum as illustrated in Fig. 104c . Scutum, scutellum,metanotum, mesepisternum and propodeum with long, greyish, erect hairs. Basal area of propodeum as illustrated in Fig. 104c ; propodeum slightly dull, with well separated minute punctures; surface completely reticulate. Marginal region of posterior truncation slightly dull; surface completely reticulate. Wings. Hyaline. Legs. Integument brownish-black. Vestiture greyish. Metasoma. L = 3,0– 3,1mm; W = 1,5–1,7mm. Integument brownish-black except the margins of T pallid brownish; margins extensively translucent. Metasomal terga as illustrated in Fig. 104d . Apical plate slender; rounded apically. Posterior margin of S4 simple, without erect bristles. Metasomal sterna S5–S6 without dense hair patches. S7 and S8 as illustrated in Fig. 104f . Genitalia. Genitalia as illustrated in Fig. 104g –h ; gonocoxa with extensive dullish patches; gonostylus with dorsolateral, projection; projection with a few hairs ventrally (usually 6–8 curled, erect hairs).

Type material (212 specimens). Holotype, male, South Africa, Western Cape, Knersvlakte , 30km N Vanrhynsdorp, S31°22'23" / E18°42'37", 146m, 27.vii.2003, leg. K. Timmermann , on Augea capensis, SANC. Paratypes: 179♀, 32♂. South Africa. Western Cape : 8♀, 1♂, Sukkulent Karoo, Knersvlakte , 20.vii.2003, leg. K. Timmermann, KTPC ; 1♀, 1♂, idem., 16.viii.2003, KTPC ; 1♀, Sukkulent Karoo, Knersvlakte , 10km S Farm Kalkgat., 29.vii.2003, leg. K. Timmermann, KTPC ; 5♀, 2♂, Sukkulent Karoo, Knersvlakte , 30km N Vanrhynsdorp, 19.vii.2003, leg. K. Timmermann, KTPC ; 10♀, 9♂, idem., 27.vii.2003, KTPC ; 35♀, 7♂, idem., 22.viii.2003, KTPC ; 2♀, idem., 26.viii.2003, KTPC ; 12♀, 12♂, idem., 05.ix.2003, KTPC ; 63♀, 1♂, idem., 05–06.ix.2003, KTPC ; 6♀, idem., 06.ix.2003, KTPC ; 15♀, idem., 11.ix.2003, KTPC ; 4♀, idem., 29.ix.2003, KTPC ; 1♀, idem., 30.ix.2003, KTPC ; 1♀, Knersvlakte, Vanrhynsdorp , urban garden, 03.viii.2003, leg. K. Timmermann, KTPC ; 1♀, idem., 15.viii.2003, KTPC ; 1♀, 5 miles NE Worcester , 11.xi.1966, leg. J.G. Rozen, AMNH ; 1♀, Lamberts Bay , 04.xi.1966, leg. J.G. Rozen, AMNH ; Northern Cape: 2♀, Hester Malan Nature Reserve , 29.vi.1985, leg. M. Struck, SANC ; 3♀, idem., 27.vii.1985, SANC ; 2♀, idem., 02.x.1985, SANC ; Eastern Cape: 4♀, 4 miles NE Steytlerville , 12.xi.1968, leg. J.G. Rozen and E. Martinez, AMNH ; 1♀, 2 km N Steytlerville , 16.–20.xi.1999, leg. M.E. Irwin, E.I. Schlinger and F.D. Parker, BLCU .

Etymology. This species is dedicated to S. Sakagami for his works on the nesting biology and social organization of sweat bees (Halictinae).

Distribution ( Fig. 105 ). Several records from the Northern Cape to the southern part of the Eastern Cape.

Floral visitation. Osteospermum sinuatum (Asteraceae) , Augea capensis (Zygophyllaceae) .

Seasonal activity (first–last observations). vi–x.

Figures

FIGURE 103. Patellapis (Ch.) sakagamii, female: a. Head (scale=0,5mm); b. Scutum (scale=0,5mm); c. Scutellum and propodeum (scale=0,5mm); d. Metasomal terga (scale=1mm); e. Body (scale=1mm); f. Inner hind tibial spur (scale=100µm); g. Basitibial plate (scale=100µm).

FIGURE 104. Patellapis (Ch.) sakagamii, male: a. Head (scale=0,5mm); b. Scutum (scale=0,5mm); c. Scutellum and propodeum (scale=0,5mm); d. Metasomal terga (scale=1mm); e. Body (scale=1mm); f. Metasomal sterna S7 and S8, ventral view (scale=100µm); g. Genitalia, dorsal view (scale=100µm); h. Genitalia, lateral view (scale=100µm).

FIGURE 105. Distributions of P. renosterveldi and P.sakagamii.