Patellapis (Chaetalictus) spinulosa (Cockerell 1941)

Timmermann, Kim & Kuhlmann, Michael, 2009, Variable Selection and Inference for Multi-period Forecasting Problems, Zootaxa 2099, pp. 1-188 : 150-153

Patellapis (Chaetalictus) spinulosa (Cockerell 1941)

Halictus spinulosus Cockerell, 1941a: 302 .

( Figs. 106a–g ; 107a–f )

Diagnosis. The most similar species is P. timpageleri . They can only be reliably distinguished with the help of reference specimens. Both sexes of P. spinulosa differ from P. timpageleri in having the metasomal terga T1–T2 more sparsely punctate and the vertex between the lateral ocellus and eye hardly punctate. This area is extensively polished in P. spinulosa , whereas in P. timpageleri more sculptured and less shiny. Further, both sexes of P. timpageleri have the metasomal terga T1–T2 more densely punctate than in P. spinulosa .

Description

Female. Bl = 4,7–5,1mm. General habitus ( Fig. 106e ). Head. L = 1,4–1,5mm; W = 1,6–1,7mm. Head sligthly wider than long ( Fig. 106a ). Integument black except mandibles sometimes partly reddish-brown. Face shiny and with loose, greyish, erect hairs. Mandibles bidentate. Clypeus and supraclypeal area convex in profile. Clypeus moderately strongly and sparsely punctate; surface shiny. Clypeoantennal distance 0,3mm. Supraclypeal area with well separated small punctures; surface sometimes finely chagreened. Paraocular area sparsely punctate; surface partly sculptured; partly shiny. Antennae brownish-black. Mesosoma. L = 1,0– 1,1mm; W (ITS) = 1,2–1,3mm. Integument black. Mesonotum with a strong, median groove. Scutum shiny; surface partly chagreened anteriorly; disc sparsely punctate (i = 1,5–2,0d) ( Fig. 106b ). Scutellum as illustrated in Fig. 106c . Scutum, scutellum and metanotum with brownish to yellowish, erect hairs; mesepisternum and propodeum with long, greyish, erect hairs. Basal area of propodeum as illustrated in Fig. 106c ; propodeum slightly dull, with well separated small punctures; surface completely reticulate. Marginal region of posterior truncation slightly dull; surface extensively reticulate. Wings. Hyaline. Legs. Integument brownish. Vestiture mostly greyish. Ts finely serrate; 8–10 small and slender, oblique projections ( Fig. 106f ). Bp as illustrated ( Fig. 106g ). Metasoma. L = 2,7–2,8mm; W = 1,6–1,8mm. Integument brownish except the margins of T pallid brownish to pallid yellowish; margins partly translucent. Apical hair bands on metasomal terga absent. Prepygidial fimbria mostly yellowish-brown. Metasomal terga as illustrated in Fig. 106d .

Male. Bl = 5,2–5,5mm. General habitus ( Fig. 107e ). Head. L = 1,4–1,5mm; W = 1,6–1,7mm. Head slightly wider than long ( Fig. 107a ). Integument black except mandibles sometimes partly reddish-brown. Clypeus, supraclypeal area, paraocular area and vertex covered with erect, greyish and brownish 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; sparsely punctate (i = 1,5–2,0d); surface completely reticulate ( Fig. 107b ). Scutellum as illustrated in Fig. 107c . Scutum, scutellum and metanotum with brownish, erect hairs; mesepisternum and propodeum with long, greyish, erect hairs. Basal area of propodeum as illustrated in Fig. 107c ; propodeum slightly dull, with small punctures close together; surface completely reticulate. Marginal region of posterior truncation slightly dull; surface extensively reticulate. Wings. Hyaline. Legs. Integument brownish-black. Vestiture greyish. Metasoma. L = 3,1–3,3mm; W = 1,5–1,7mm. Integument brownish except the margins of T pallid brownish to pallid yellowish; margins partly translucent. Metasomal terga as illustrated in Fig. 107d . Apical plate broad; rounded apically. Posterior margin of S4 simple, without erect bristles. Metasomal sterna S5–S6 without dense hair patches. Genitalia. Genitalia as illustrated in Fig. 107f ; gonocoxa extensively dull; gonostylus with dorsolateral, slender, hyaline projection; projection with 8–10 curled hairs ventrally.

Type material ( 1 specimen). Holotype, female, Type (round red-white label), B.M. TYPE HYM 17 .a.1206 (white label), Halictus spinulosus Ckll. Type (handwritten white label), S. Africa, Cape Province, Calvinia , [S31°28ʹ / E19°45ʹ], xi.1931, Miss A. Mackie, BMNH.

Additional material (24 specimens). 17♀, 7♂. South Africa. Northern Cape : 1♀, Leliefontein, pan trap, 02.x.2002, leg. C. Mayer, KTPC ; 1♀, idem., 07.x.2002, KTPC ; 1♀, idem., 14.x.2002, KTPC ; 1♀, idem., 04.–18.x.2002, KTPC ; 1♂, idem., 31.viii.2003, KTPC ; 1♂, idem., 05.ix.2003, KTPC ; 1♀, 2♂, idem., 07.ix.2003, KTPC ; 1♂, idem., 11.ix.2003, KTPC ; 1♂, Remhoogte, pan trap, 05.ix.2003, leg. C. Mayer, KTPC ; 1♂, idem., 07.ix.2003, KTPC ; 1♀, idem., 23.ix.2003, KTPC ; 1♀, idem., 14.x.2003, KTPC ; 7♀, Oorlogskloof farm, 12.–19.x.2000, leg. S. van Noort and H.G. Robertson, SANC ; 3♀, Farm Glenlyon, Nieuwoudtville, 11.–18.x.2000, leg. H.G. Robertson, D. Larsen and R . Adams, SANC .

Distribution ( Fig. 110). Records only exist for the winter rainfall area of the Northern Cape.

Floral visitation. Unknown

Seasonal activity (first–last observations). viii–xi.

Figures

FIGURE 106. Patellapis (Ch.) spinulosa, 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 107. Patellapis (Ch.) spinulosa, 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. Genitalia, dorsal view (scale=100µm).