Hylaeus (Nesoprosopis) dathei Chen and Xu

Chen, Huan & Xu, Huanli, 2012, Three new species of the genus Hylaeus (Hymenoptera: Colletidae) from South Korea, Zootaxa 3419, pp. 62-68 : 63-64

Hylaeus (Nesoprosopis) dathei Chen and Xu , sp. nov.

( Figs. 1–6 , 19)

Diagnosis. Male: medium size; marks on face well developed; propodeal TRN, OBL and lateral carinae indistinct, anterior portion of propodeal with transverse wrinkles; scape slightly turbinate broadened. S8 more or less rhombiform, apical process without hairs, slender and simple.

Description. Male (Holotype). Measurements: BL 6.11mm; WL 4.64mm; HL 1.55mm; HW 1.65mm; CI 1.32; SI 1.67.

Coloration: Black. The following whitish: clypeus except anterior tentorial pit; well developed lateral face marks ending narrowly and rather acutely at eye margins beyond the level of upper margins of antennal sockets; lateral mark on scape; linear band marks on collar of pronotum; apical spots on tubercles (pronotal lobe); lateral mark on fore tibia, basal spot on middle tibia, basal half of hind tibia, all basitarsi; posterior portion of tegula. Underside of flagellum brown; base portion of tegula brown; mediotarsus and distitarsus yellowish brown; veins and stigma brown.

Structure: Scape slightly turbinate broadened; face slightly shiny with fine to moderate punctures; clypeus transverse lineolate-reticulate, with shallow fine close punctures, lower portion slightly convex; paraocular area longitudinally lineolate-reticulate with dense punctures; lower portion of paraocular area punctures become sparse and indistinct; supraclypeal area moderately convex, with fine sparse puntures; frons with close punctures; punctures become larger and sparser along margins of eyes; facial fovea indistinct; gena slightly narrower than eye in lateral view, moderately shiny with fine and close to sparse punctures; pronotal collar roundly thickened, attenuated toward middle; mesoscutum moderately shiny with fine and sparse punctures; scutellum slightly convex, moderately shiny with larger and sparser punctures than those on mesoscutum; metanotum weakly convex and slightly shiny, with close punctures; mesopleuron moderately shiny with fine to moderate and dense to close punctures; propodeal TRN, OBL and lateral carinae indistinct, anterior portion of propodeal with transverse wrinkles, posterior portion with moderate and subcontiguous punctures; T1 transverse lineolate-reticulate, shiny with minute and scattered punctures,T2 and following terga with larger and closer punctures.

Pilosity: Hairs on vertex yellow, dense and short; hairs on apical margin of clypeus yellow and very sparse; hairs on mesoscutum white and particularly short; hairs on lateral metanotum longer; hairs on mesopleuron white and sparse; pronotal collar and pronotal lobe with short dense yellow hairs; hairs on T1 extremely short and sparse, hairs on T 2 and T3 white, short and sparse.

Terminalia: See Figs. 1–6 . Apical lobe of S7 reduced and without hairs. S8 more or less rhombiform, apical process slender.

Type material. Holotype: 13, South Korea, Gangwondo Chunnchem Nam Myeon 31.VII-30.IX.2006, Denis Michez.

Paratypes: 13, South Korea, Jirisan, Hamyang Songjeon-li Munsu-sa 400m, 9.VII-17.VIII.2005, Denis Michez; 13, South Korea, Jirisan Hamyang Songjeon-li Munsu-sa 400m, 5.IX-4.X.2005, Denis Michez.

Type material deposited in the entomological museum of China Agricultural University, Beijing, China.

Distribution.: South Korea

Etymology. The specific name is dedicated to H.H. Dathe of Germany entomologist for his big contributions on systematics of the Hylaeus .

Figures

FIGURES 1 – 6. Male terminalia of Hylaeus (Nesoprosopis) dathei sp. nov. 1. Ventral view of genitalia; 2. Dorsal view of genitalia; 3. Lateral view of genitalia; 4. Dorsal view of S 7; 5. Ventral view of S 8; 6. Lateral view of S 8. Scale bar = 1 mm.