Sphecodes samarensis Bluethgen , 1927

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 samarensis Bluethgen, 1927 Figures 110-114

Sphecodes samarensis Blüthgen, 1927: 73, Fig. 19a-e , ♂ (holotype: ♂, Philippines, Insel Samar, Baker leg.; ZMHB, examined, illustrated in Fig. 125 ).

Diagnosis.

This species is closest to Sphecodes bakeri (refer to diagnosis of S. bakeri , above). The male is also similar to S. biroi Friese, 1909 and S. laticeps Meyer, 1920 owing to a similar structure, sculpture and coloration of the body, including the shape of the male genitalia. The species differs from S. laticeps by the areolate and less elevated vertex with distance from top of head to upper margin of lateral ocellus half or one of a lateral ocellar diameter as seen in frontal view (versus shining vertex with interspaces between punctures and distance from top of head to upper margin of lateral ocellus one and a half or two lateral ocellar diameters. The female of S. samarensis is unknown, but these features would work in both sexes). From S. biroi the species differs in the shape of tyloids with a glabrous medial spot on ventral surface of flagellomeres (versus tyloids usually covering entire ventral flagellar surface or sometimes with a small non-setae spot on basal flagellomeres). The unknown female is probably closest to S. duplex and S. bakeri .

Descriptive notes.

Wings with weak yellow-brownish darkening; hind wing with the angle between basal (M) and cubital (Cu) veins almost 80°, costal margin with seven hamuli. Lateral preoccipital carina present. Male. Total body length 5-6.5 mm. Head (Fig. 110 ) transverse, ca. 1.25 times as wide as long; vertex weakly elevated with the distance from top of head to upper margin of a lateral ocellus half or one of a lateral ocellar diameter as seen in frontal view; antennae (Fig. 110 ) short, reaching posterior margin of mesoscutum, F2 ca. 1.5 times as long as wide, remaining flagellomeres ca. 1.2 times as long as wide; tyloids well developed, covering entire lateral flagellar surfaces and peripheral part of ventral surface (ventral surface medially with glabrous round spot); face and vertex (Fig. 111 ) finely areolate-punctate; face (below and above the antennal sockets) with adpressed white pubescence obscuring integument, gena with sparser pubescence. Mesoscutum and mesoscutellum areolate (Fig. 112 ); propodeal triangle sculpture roughly reticulate-rugose, forming a row of large deep longitudinal cells; lateral parts of propodeum rugose with large smooth shiny interspaces. Metasomal terga (Fig. 113 ) with fine punctures (10-15 μm /1-3); marginal zones impunctate; T1-T3 red; gonocoxite dorsally without impression; gonostylus as on Fig. 114 . Female unknown.

Material examined.

Indonesia: 1 ♂, Sumatra, 500 m, Sirggalang Annai Valley n.r., 14.X.2005, S. Jakl (OLBL/PCMS); Malaysia: 1 ♂, Pahang, 30 km NE Raub, 300 m, Lala Lembik, 3°56'N, 101°38'E, IV-V.2002, E. Jendek, O. Sausa (OLBL/PCMS); Philippines: 4 ♂♂ (holotype and paratypes), Insel Samar, Baker [leg.] (ZMHB).

Published records.

Blüthgen 1927: 73 (Philippines), Ascher and Pickering 2019 (Philippines).

Distribution.

*Indonesia, *Malaysia, Philippines.

Figures

Figures 110 - 114. Sphecodes samarensis Bluethgen, male 110 head, frontal view 111 vertex, dorsal view 112 mesosoma, dorsal view 113 T 1 - T 3, dorsal view 114 genitalia, dorsal view. Scale bars: 1.0 mm.

Figures 17 - 21. Sphecodes biroi Friese, male 17 antennae, lateral view 18 head, frontal view 19 mesosoma, dorsal view 20 genitalia, dorsal view 21 T 1 - T 3, dorsal view. Scale bars: 1.0 mm (17 - 19, 21), 0.5 mm (20).

Figures 120 - 126. Sphecodes sauteri Meyer, male, holotype (120 - 125) 120 head, frontal view 121 antennae, lateral view 122 mesepisternum, lateral view 123 scutum, dorsal view 124 propodeum, dorsal view 125 holotype labels 126 genitalia, dorsal view. Scale bars: 1.0 mm (120 - 123), 0.5 mm (124, 126).