Sphecodes bakeri Cockerell, 1915

Astafurova, Yulia V., Proshchalykin, Maxim Yu. & Schwarz, Maximilian, 2020, New and little-known species of the genus Sphecodes Latreille (Hymenoptera, Halictidae) from Southeast Asia, ZooKeys 937, pp. 31-88 : 31

Sphecodes bakeri Cockerell, 1915 Figures 3 , 5

Sphecodes bakeri Cockerell, 1915: 489, ♀ (holotype: ♀, Philippines, Dapitan, Mindanao, Baker leg.; USNM, http://n2t.net/ark:/65665/34c597e0b-f31f-4bd8-82fb-e3e6a1379222).

Diagnosis.

Structurally and sculpturally this species is very similar to the male of Sphecodes samarensis Blüthgen, 1927 and the female of S. duplex Blüthgen, 1927, but from the first species it differs by weakly developed antennal tyloids (versus tyloids covering large part of ventral flagellar surface in S. samarensis ) and from the second species by the ocello-ocular area (Fig. 5 ) having entirely confluent punctures (versus the ocello-ocular area with narrow shiny interspaces in S. duplex , Fig. 4 ).

Descriptive notes.

Wings with weak yellow-brownish darkening; hind wing with angle between basal (M) and cubital (Cu) veins ca. 70°, costal margin with eight hamuli. Lateral preoccipital carina present. Female. Total body length 6-8 mm. Head strongly transverse in front view, ca. 1.3 times as wide as long (Fig. 3 ); vertex weakly elevated with distance from top of head to upper margin of lateral ocellus approximately a lateral ocellar diameter as seen in frontal view; labrum trapezoidal, 0.6 times as long as basal width; face and ocello-ocular area with confluent punctures; paraocular and supraclypeal areas with adpressed white pubescence obscuring integument, gena with sparser pubescence. Mesoscutum and mesoscutellum areolate-punctate (30-50 μm); propodeal triangle (metapostnotum) and lateral parts of propodeum with longitudinal wrinkles and smooth shiny interspaces between them; mesepisternum reticulate-rugose. Metasomal terga almost impunctate, sometimes with a few fine punctures, red; pygidial plate widely rounded apically, 1.2-1.4 times as wide as metabasitarsus. Male. Total body length 5.5-6.5 mm. Head transverse, ca. 1.15 times as wide as long; vertex weakly elevated with distance from top of head to upper margin of lateral ocellus approximately a lateral ocellar diameter as seen in frontal view; tyloids weakly developed, narrowly linear as seen in lateral view; F2 1.6 times as long as wide; F3 = F4, 1.2-1.3 times as long as wide; face (below andabove the antennal sockets) with adpressed white pubescence obscuring integument. Mesoscutum and mesoscutellum areolate-punctate; propodeum and mesepisternum as in the female. Metasomal terga finely punctate (15-20 μm / 1-3); marginal zonesimpunctate; T1-T3 red; gonocoxite dorsally without impression; gonostylus short, apically broadened.

Material examined.

Indonesia: 1 ♀, NE Sulawesi, 47 km WSW Kotamobagu, Dumoga-Bone N. Pk., Toraut, 211 m, VII.1985, G.R. Else (NHMUK 013380350); Philippines: 1 ♂, Dapitan, Mindano, Baker leg. [ Sphec. bakeri Ckll., Blüthgen det.] (ZMHB); 1 ♀, Kolambugan, Mindanao, Baker leg. [ Sphec. bakeri Ckll., Blüthgen det.] (ZMHB).

Published records.

Cockerell 1915: 489 (Philippines); Blüthgen 1927: 74 (Philippines); Ascher and Pickering 2019 (Philippines).

Distribution.

*Indonesia, Philippines.

Figures

Figures 2 - 7. Sphecodes duplex Bluethgen (2, 4, 6, 7), S. bakeri Cockerell (3, 5), females 2, 3 head, frontal view 4, 5 vertex, dorso-lateral view 6 mesosoma, dorsal view 7 T 1 - T 3, dorsal view. Scale bars: 1.0 mm (2, 3, 6, 7), 0.5 mm (4, 5).