Hylaeus makaha, Magnacca, Karl N., 2011

Magnacca, Karl N., 2011, Two new species of Hylaeus (Nesoprosopis) (Hymenoptera: Colletidae) from O‘ahu, Hawai‘i, Zootaxa 3065, pp. 60-65 : 61

Hylaeus makaha n. sp.

Fig. 1

Diagnosis. The color pattern, with a black mesosoma and largely orange-red metasoma with prominent black bands, is unique. The metasoma color serves to distinguish it from H. mimicus and H. kokeensis , which have the female face similarly marked. It is also the only species aside from H. kona and H. kokeensis to have the median plate yellow.

Description. Ƥ. Head. Front of head only weakly convex in lateral view. Mandible with two teeth. Malar space short, length 0.4 times the diameter of the median ocellus. Upper paraocular area and frons with small round pits less than one pit width apart, somewhat closer near the midline but not congested or distorted. Apex of clypeus weakly emarginate. Dorsal end of facial fovea just reaching to level of lateral ocellus. Vertex hair 6–10, pale brown, plumose. Mesosoma. Fore tarsus with most hairs erect, apically curved. Scutum with inconspicuous punctation consisting of very small, shallow pits 2–3 pit widths apart, ground dull; hair extremely short (about 2, rarely to 6), pale brown, simple. Scutellum with slightly larger pits, slightly lustrous. Metanotum dull. Mesepisternum with shallow pits 1–2 pit widths apart, ground smoothly coriaceous, lustrous; with long, yellow, plumose hair. Hypoepimeron weakly punctate, slightly swollen. Basal area of propodeum, including brow, smoothly coriaceous and lustrous, sometimes with a few short rugae at base. Metasoma. Disk of T2 impunctate, smoothly coriaceous, lustrous, with fine, pale, appressed hairs spaced about one hair length apart or more. T6 hair long, dark brown, erect. Color. Head and mesosoma black; metasoma predominantly reddish-orange with black bands. Face with three separate yellow marks: paraocular area with a broad stripe filling in area between clypeus and eye, extended along eye above antennal socket; clypeus with a more or less triangular apical mark of variable size, at largest occupying about the middle half laterally and extended back about halfway, sometimes reduced to a small orange smudge (probably occasionally absent). Pronotum with marks on lobes and interrupted transverse collar stripe; tegula with a yellow spot; median plate at base of wing yellow. Legs black except front tibia with anterior pale area, all femora narrowly yellow apically, and all tibiae yellow on basal half. Wings hyaline. Metasoma predominantly reddish orange, each segment with a broad dark brown dorsal band and a small dark lateral spot; T1 also with a large irregular dark spot on each side. T6 entirely black.

3. Unknown. Probably with face marks resembling H. kona and body coloration resembling the female.

Holotype. O‘ahu: Ƥ ( BPBM 17298), Makaha Valley, 2200 ft., 21.502°N 158.168°W, at Bidens torta , 10.viii.2010, K. Magnacca.

Paratypes. 3Ƥ, same data as holotype, at Chamaesyce herbstii (1 at BPBM, 2 at UHIM).

Other Specimens. 1Ƥ, 20.ix.2009, otherwise same data as paratype (used for DNA extraction, specimen temporarily stored at University of Hawai‘i–Hilo research collection), GenBank accession no. JN679599 .

Etymology. From the type locality, Makaha Valley. It is to be treated as a noun in apposition.

Discussion. The female keys to couplet 32 in Daly & Magnacca (2003), where it does not fit with either H. kona or H. mimicus due to having both the median plate yellow and usually at least a trace of a clypeal mark (the 2009 specimen lacks a clypeal mark and would run to H. kona ). The distinctive banded metasoma is, oddly, otherwise only found in the sympatric H. ulaula , which is not closely related; both belong to the dumetorum species group but are not sibling species, and no other known members of the group have reddish coloration.

Figures

FIGURE 1. Hylaeus makaha, holotype Ƥ. A) Lateral habitus. B) Metasoma, dorsal view. C) Head, frontal view.