Hylaeus (Hylaeus) wuae Chen and Xu, 2013

Chen, Huan & Xu, Huanli, 2013, Full title of manuscript: Five new species of the genus Hylaeus (Hymenoptera: Colletidae) from China, Zootaxa 3669 (3), pp. 331-349 : 332-335

Hylaeus (Hylaeus) wuae Chen and Xu , sp. nov.

( Figs 1a–f , 2a–f )

Diagnosis. Male: Marks on face well developed (fig. 1b); occiput lacks a distinct marginal ledge; propodeum TRN, OBL and lateral carina indistinct, basal area of propodeum with longitudinal or irregular wrinkles (fig. 1d); T1 shiny with minute and sparse to scattered punctures (fig. 1f); terminalia see Figs 2a–f . Female: Marks on face developed only in paraocular area (fig. 1a); occiput lacks a distinct marginal ledge; T1 shiny with minute and sparse to scattered punctures (fig. 1e).

Description. Male (Holotype). Measurements: BL 6.0mm; WL 4.0mm; HL 1.34mm; HW 1.38mm; CI 1.51; SI 1.95.

Coloration. Marks on clypeus, supraclypeal area, paraocular area, and lateral margin of scape whitish. Apical portion of pronotal lobe, anterior portion of tegula, lateral side of fore tibia, small basal spot on middle tibia, basal half of hind tibia, base 1/3 of hind basitarsus yellowish, other all basitarsi, mediotarsi, distitarsi, tarsal claws and tibial spurs yellowish brown. Apical part of mandibles transparent reddish brown. Flagellum, veins and stigma, apical bands of tergum brown. Other parts all black.

Structure: Marks on face well developed (fig. 1b); scape slightly turbinate broadened, punctures minute and dense; face slightly shiny with fine to moderate punctures; clypeus with shallow fine sparse punctures, upper portion of clypeus with smooth integumental, lower portion of clypeus transverse lineolate-reticulate, slightly convex; supraclypeal area reticulate-striation, with fine sparse punctures, upper portion slightly convex; upper portion of paraocular area pit-reticulation, punctures fine and dense, lower portion of paraocular area longitudinally lineolate-reticulate with fine sparse punctures; frons with fine close punctures, interspace less than one diameter apart; frons above antennae with small free unpunctated space, about as long as diameter of antennal socket; facial fovea indistinct; punctures on vertex similar to those on frons; malar area short, more or less 1/4 as long as width of mandible base, with weak longitudinal wrinkles; genal area as broad as eyes in lateral view, reticulate-striation, moderately shiny with fine and dense to close punctures; occiput lacks a distinct marginal ledge; pronotal collar roundly thickened, slightly attenuated toward middle; mesoscutum moderately shiny with minute and close punctures; scutellum disc flat, moderately shiny with minute and close punctures, but a little sparser than those on mesoscutum; metanotum weakly convex and dull, with coarse integumental sculpture; mesopleuron moderately shiny, central part with uniform fine to moderate and dense punctures; propodeum TRN, OBL and lateral carina indistinct, basal area of propodeum with longitudinal or irregular wrinkles, posterior portion with minute and subcontiguous punctures (fig. 1d); T1 transverse lineolate-reticulate, shiny with minute and sparse to scattered punctures, T2 and the following terga with minute but much sparser punctures (fig. 1f).

Pilosity: Hairs on vertex whitish, dense and short; hairs on apical margin of clypeus white and very sparse; inner margin of scape with yellowish brown sparse hairs; hairs on flagellum white, dense and short; hairs on mesoscutum, scutellum, metanotum and propodeum white, short and sparse; hairs on mesopleuron longer and denser; hairs on posterior surface of propodeum denser than other parts; pronotal collar with short dense white hairs; pronotal lobe with short dense yellow hairs; hairs on T1 extremely short and sparse; hairs on T2 similar to T1; hairs on following terga white, extremely short and much denser than those on T1.

Terminalia: See Figs. 2a–f .

Female (Paratype). Measurements: BL 6.38mm; WL 3.53mm; HL 1.43mm; HW 1.49mm; CI 1.22; SI 3.22.

Coloration: Marks on paraocular area, apical portion of pronotal lobe, basal spot on fore tibia, basal 1/3 of hind tibia yellowish. Flagellum, posterior portion of tegula, veins and stigma, all basitarsi, mediotarsi, distitarsi, tibial spurs, tarsal claws, and apical bands of tergum brown. Apical part of mandibles transparent reddish brown. Other parts all black.

Structure: Marks on face developed only in paraocular area (fig. 1a); clypeus longitudinally lineolatereticulate, slightly convex, dull, rugose, punctures irregularly shaped; supraclypeal area slightly convex, lower portion of supraclypeal area longitudinally lineolate-reticulate, dull, upper portion punctures minute and close to sparse; upper portion of paraocular area pit-reticulation, punctures minute and close to sparse, lower portion of paraocular area longitudinally lineolate-reticulate with shallow fine sparse punctures; frons pit-reticulation, with minute dense punctures; frons above antennae with free unpunctated space, about twice as long as diameter of antennal socket; punctures on vertex similar to those on frons; malar area short, more or less 1/4 as long as width of mandible base, with weak longitudinal wrinkles; facial fovea indistinct; genal area as broad as eyes in lateral view, reticulate-striation, moderately shiny with minute and dense to close punctures; occiput lacks a distinct marginal ledge; punctures on scape minute and dense; pronotal collar roundly thickened, attenuated toward middle; mesoscutum transverse lineolate-reticulation, moderately shiny, punctures minute and close to sparse; scutellum lineolate-reticulation, moderately shiny with minute and sparse punctures; metanotum weakly convex and dull, coarse, punctures irregularly shaped or minute; mesopleuron moderately shiny, central part with minute and sparse to scattered punctures; propodeum TRN, OBL and lateral carina indistinct, basal area of propodeum with longitudinal wrinkles, posterior portion with minute and dense punctures (fig. 1c); T1 transverse lineolatereticulate, shiny, punctures minute and close to scattered, T2 similar to T1, but the following terga with minute and much sparser punctures (fig. 1e).

Pilosity: Hairs on vertex brown, sparse; hairs on clypeus and apical margin of clypeus brown and very sparse; hairs on flagellum white, dense and short; hairs on mesoscutum, scutellum, metanotum and propodeum white, short and very sparse; hairs on mesopleuron and pronotal collar short and sparse; pronotal lobe with short sparse brown hairs; hairs on posterior surface of propodeum denser than other parts; hairs on T1 and T2 extremely short and sparse; hairs on the following terga white, extremely short but denser than those on T1.

Type material. Holotype: 1 male, Qianshi mountain , Jianchuan County, Dali City, Yunnan Province, China (26°32'44"N, 99°52'49"E 2381m), 10.VI.2012, Huan Chen . Paratypes: 1 male, Yulong reservoir, Lijiang City, Yunnan Province, China (26°57'19"N, 100°11'34"E 2740m) , 14. VI.2012, Huan Chen; 1 female, Yulong reservoir, Lijiang City, Yunnan Province, China (26°57'19"N, 100°11'34"E 2740m) , 14. VI.2012, Huan Chen; 2 females, Qianshi mountain , Jianchuan County, Dali City, Yunnan Province, China (26°32'44"N, 99°52'49"E 2381m) , 10. VI.2012, Huan Chen; 1 female, Cang mountain , Dali City, Yunnan Province, China (25°38'49"N, 100°10'17"E 2220m) , 5. VI.2012, Huan Chen. Type material deposited in the entomological museum of China Agricultural University , Beijing, China .

Discussion. This new species is similar to H. altaicus , it is easily distinguished by the following: the shape of scape are different, scape just slightly turbinate broadened in H. wuae sp. (but much swollen in H. altaicus ); apical lobes of S7 pectinate and developed, more or less triangular (but apical lobes of S7 with rounded tips); S8 apical process long, swollen in the middle part, and bifid at apex, its two apical portions close to each other (but more separable in H. altaicus ).

Distribution. China, Yunnan Province.

Etymology. The specific name is dedicated to emeritus professor Wu Yan-ru of Institute of Zoology, Chinese Academy of Sciences for her contributions on bee taxonomy.

Figures

FIGURE 1. Structure of Hylaeus (Hylaeus) wuae sp. nov.. Female left, male right: a, b Head; c, d Propodeum; e, f Tergum (female: paratype; male: holotype).

FIGURE 2. Male (holotype) terminalia of Hylaeus (Hylaeus) wuae sp. nov. a. Ventral view of genitalia; b. Dorsal view of genitalia; c. Lateral view of genitalia; d. Ventral view of S7; e. Ventral view of S8; f. Lateral view of S8. Scale bar=0.5mm.