Sphecodes distinctus Meyer, 1925

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

publication ID

https://dx.doi.org/10.3897/zookeys.937.51708

publication LSID

lsid:zoobank.org:pub:31D11FB1-5646-44B5-89B7-4B529E582928

persistent identifier

https://treatment.plazi.org/id/89605763-F008-55A3-840D-2292E81690C5

treatment provided by

ZooKeys by Pensoft

scientific name

Sphecodes distinctus Meyer, 1925
status

 

Sphecodes distinctus Meyer, 1925 Figures 46-52 View Figures 46–52

Sphecodes distinctus Meyer, 1925: 11, ♂ (holotype: ♂, Annam, Laos [Vietnam]; HNHM, examined, Fig. 52 View Figures 46–52 ).

Diagnosis.

This species is similar to Sphecodes formosanus Cockerell, 1911 in having weakly developed tyloids, a densely punctate mesoscutum (close to areolate) and metasomal terga, but it differs in having a smaller body size (6.5-8.5 mm versus 9-10 mm), number of hamuli (seven or eight versus ten), and usually more developed tyloids (covering sometimes to basal 1/4-1/3 of distal flagellomeres compared to at most 1/5 in S. formosanus ). Females of S. takaensis Blüthgen 1927, S. howardi and S. binghami are structurally and sculpturally close to the male of S. distinctus and it is possible that one of these is the unknown female for S. distinctus .

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 or eight hamuli. Lateral preoccipital carina present. Male. Total body length 6.5-8.5 mm (Fig. 46 View Figures 46–52 ). Head transverse (Fig. 47 View Figures 46–52 ), ca. 1.2 times as wide as long; vertex elevated with distance from top of head to upper margin of lateral ocellus approximately an ocellar diameter as seen in frontal view; antennae (Fig. 51 View Figures 46–52 ) reach posterior margin of mesoscutum, F2 1.6-1.7 times as long as wide, remaining flagellomeres 1.2-1.3 times as long as wide; tyloids semicircular across basal 1/7-1/3 of flagellar surfaces; face and vertex finely areolate-punctate; face (below and above the antennal sockets) and gena with adpressed white pubescence obscuring integument. Mesoscutum and mesoscutellum coarsely and densely punctate (Fig. 48 View Figures 46–52 ), mostly with confluent punctures, but medially with interspaces approximately a puncture diameter; propodeal triangle (metapostnotum) roughly reticulate-rugose. Metasomal terga (Fig. 49 View Figures 46–52 ) coarsely punctate (20-25 μm / 1-3); marginal zone on T1 finely punctate (impunctate along posterior margin); remaining marginal zones impunctate; T1-T4 and T5 basally red; gonocoxite dorsally without impression; gonostylus as shown in Fig. 50 View Figures 46–52 . Female unknown.

Material examined.

Thailand: 13 ♂♂, Nan, MaeCharim NP Eingang, 18°36'N, 100°58'E, 10-24.V.2012, E. & J. Holzschuh (OLBL/PCMS).

Published records.

Meyer 1925: 11 (Vietnam); Ascher and Pickering 2019 (Vietnam).

Distribution.

*Thailand, Vietnam.

Remarks.

Annam (type locality of S. distinctus ) is actually located in Vietnam, not Laos as Meyer (1925: 11) pointed out.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Halictidae

Genus

Sphecodes

Loc

Sphecodes distinctus Meyer, 1925

Astafurova, Yulia V., Proshchalykin, Maxim Yu. & Schwarz, Maximilian 2020
2020
Loc

Sphecodes distinctus

Meyer 1925
1925