Hylaeus (Hylaeus) napacus 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 : 335-338

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

( Figs 3a–f , 4a–f )

Diagnosis. Male: Marks on face well developed, scape strongly turbinate broadened (fig. 3b); propodeum TRN, OBL and lateral carina indistinct, basal area of propodeum with cancellate wrinkles, central part rugose, posterior portion rugose, dull with minute and subcontiguous punctures (fig. 3d); T1 shiny with minute and scattered punctures (fig. 3f); terminalia see Figs. 4a–f . Female: Marks on face developed only in paraocular area, elongated (fig. 3a); T1 rugose, nearly without or with extremely minute punctures (fig. 3e).

Description. Male (Holotype). Measurements: BL 6.80mm; WL 4.59mm; HL 1.57mm; HW 1.68mm; CI 1.10; SI 1.26.

Coloration: The following yellowish: marks on clypeus, supraclypeal area, paraocular area, apical portion of pronotal lobe, anterior portion of tegula, lateral side of fore tibia, basal 1/4 of middle tibia, basal spot on middle basitarsus, basal half of hind tibia, most part of hind basitarsus. Tibial spur light yellow, other all mediotarsi, distitarsi, and tarsal claws brown. Apical part of mandibles transparent reddish brown. Flagellum (except basal 1/2 of the 1 st flagellum), veins and stigma, apical bands of tergum brown. Other parts all black.

Structure: Clypeus transverse lineolate-reticulation, punctures minute and scattered, lower portion weakly convex; supraclypeal area moderately convex, longitudinal lineolate-reticulation, punctures minute and scattered; upper portion of paraocular area pit-reticulation, with minute dense punctures, lower portion of paraocular area longitudinal lineolate-reticulation, punctures scattered; genal area slightly narrower than eyes in lateral view, recticulate-striation, punctures deep, minute to fine, dense; frons and vertex pit-reticulation, distinctly and densely punctated, punctures minute to fine; vertex coarser than frons; the 1 st and 2 nd flagellum shorter than others; malar area short, more or less 1/4 as long as width of mandible base, with weak longitudinal wrinkles; scape strongly turbinate broadened, punctures extremely minute and subcontiguous; pronotal collar roundly thickened, slightly attenuated toward middle; mesoscutum transverse lineolate-reticulation, moderately shiny, punctures deep, minute to fine and dense, uniformly distributed; scutellum transverse lineolate-reticulation, flattened, densely and uniformly punctated, moderately shiny; metanotum coarse and dull; mesopleuron moderately shiny, lineolatereticulation, in central part punctures fine and dense; propodeum TRN, OBL and lateral carina indistinct, basal area of propodeum with cancellate wrinkles, central part rugose, posterior portion rugose, dull with minute and subcontiguous punctures (fig. 3d); terga transverse lineolate-reticulate, T1 shiny with minute and scattered punctures (fig. 3f), T2 and the following terga punctures minute but denser and more coarse.

Pilosity: Hairs on clypeus yellowish brown, moderate long and sparse; hairs on vertex brown, long and dense; inner margin of scape with long erect yellowish brown hairs; hairs on flagellum whitish brown, dense and short; hairs on genal area very short and sparse; hairs on mesoscutum, scutellum, and metanotum brown, short and sparse; hairs on mesopleuron pale, long and dense; hairs on posterior portion of propodeum white, long and dense; pronotal collar with short sparse brown hairs; pronotal lobe with short dense whitish hairs; legs with moderate long and dense whitish hairs; hairs on T1 extremely short and sparse; the following terga hairs whitish or whitish brown, becoming longer and denser than those on T1.

Terminalia: See Figs. 4a–f .

Female (Paratype). Measurements: BL 6.36mm; WL 3.53mm; HL 1.54mm; HW 1.59mm; CI 1.26; SI 2.82.

Coloration: The following yellowish: marks on paraocular area, apical portion of pronotal lobe, basal spot on fore tibia, basal 1/3 of hind tibia. Tibial spur, tarsal claws yellowish brown. Apical part of mandibles transparent reddish brown. Veins and stigma, and apical bands of tergum brown. Other parts all black.

Structure: Clypeus, supraclypeal area and lower portion of paraocular area recticulate-striation; punctures on clypeus and supraclypeal area elongated, interspace rugose; anterior tentorial pit big and deep; lower portion of paraocular area with minute and sparse punctures, upper portion with denser punctures; frons above antennae with long unpunctated space, shiny longer than diameter of antennal socket; rest of frons and vertex recticulate-striation, punctures extremely minute and close; facial fovea ending nearer to inner eye margin than to lateral ocellus; genal area slightly narrower than eyes in lateral view, recticulate-striation, punctures deep, minute and sparse; the 1 st and 2 nd flagellum a little shorter than others; malar area very short, more or less 1/5 as long as width of mandible base, with weak microridges; pronotal collar roundly thickened, slightly attenuated toward middle; mesoscutum pitreticulation, interspace coarse, punctures minute to fine and close, uniformly distributed; scutellum flat, sculpture similar to mesoscutum; metanotum with minute and dense punctures, interspace with wrinkles, dull; mesopleuron lineolate-reticulation, in central part punctures minute and sparse to scattered; propodeum TRN, OBL and lateral carina indistinct, basal area of propodeum with sparse cancellate wrinkles, central part rugose, posterior portion rugose, dull with minute and subcontiguous punctures (fig. 3c); T1 rugose, nearly without or with extremely minute punctures (fig. 3e); T2 and the following terga transverse lineolate-reticulation, punctures minute but becoming denser and more coarse.

Pilosity: Pilosity of female similar to male: hairs on clypeus yellowish brown, moderate long and sparse; hairs on vertex brown, long and dense; hairs on scape sparse; hairs on flagellum whitish brown, dense and short; hairs on genal area very short and sparse; hairs on mesoscutum, scutellum, and metanotum brown, short and sparse; hairs on mesopleuron pale, moderate long and sparse; hairs on posterior portion of propodeum white, long and dense, but shorter than those on male; pronotal collar with short sparse brown hairs; pronotal lobe with short dense whitish hairs; legs with moderate sparse to dense yellowish brown hairs; hairs on T1 extremely short and sparse; the following terga hairs whitish, becoming longer and denser than those on T1.

Type material. Holotype: 1 male, the Napa Lake La Prairie protection zone, Zhongdian County, Yunnan Province, China (27°54'27"N, 99°37'41"E 3280m), 8.VI.2012, Huan Chen . Paratypes: 2 males, the Napa Lake La Prairie protection zone, Zhongdian County, Yunnan Province, China (27°54'27"N, 99°37'41"E 3280m) , 8. VI.2012, Huan Chen; 1 female, the Napa Lake La Prairie protection zone, Zhongdian County, Yunnan Province, China (27°54'27"N, 99°37'41"E 3280m) , 8. VI.2012, Huan Chen. Type material deposited in the entomological museum of China Agricultural University , Beijing, China .

Discussion. The face mark of this new species is similar to H. cardioscapus , the scape of H. cardioscapus with large marks, but H. napacus sp. n. without any marks on scape. And the male terminalia of the two species are quite different: in this new species, the penis valve is much beyond gonostylus (not much in H. cardioscapus ), gonoforceps with many short hairs; apical lobes of S7 triangular, upper parts finely pectinate (lower parts finely pectinate in H. cardioscapus ), and with hairs on the middle; S8 long, basal process strong, apical process long and bifid at apex (the middle of apical process a little uplift in H. cardioscapus ), with some short hairs.

Distribution. China, Yunnan Province.

Etymology. The type location Napa is given as the specific name.

Figures

FIGURE 3. Structure of Hylaeus (Hylaeus) napacus sp. nov.. Female left, male right: a, b Head; c, d Propodeum; e, f Tergum (female: paratype; male: holotype).

FIGURE 4. Male (holotype) terminalia of Hylaeus (Hylaeus) napacus sp. nov.. a. Ventral view of genitalia; b. Dorsal view of genitalia; c. Lateral view of genitalia; d. Dorsal view of S7; e. Ventral view of S8; f. Lateral view of S8. Scale bar=0.5mm.