Glemparon waipoua, Jaschhof & Jaschhof, 2018

Jaschhof, Mathias & Jaschhof, Catrin, 2018, Descriptions of eighteen new species of Glemparon, a previously monotypic genus of Porricondylinae (Diptera, Cecidomyiidae), European Journal of Taxonomy 450, pp. 1-38 : 32-33

Glemparon waipoua sp. nov.

urn:lsid:zoobank.org:act:8C07CF84-F7E3-4506-B538-C69C1F43B4E5

Fig. 18 A–C, E

Diagnosis

A combination of genitalic characters is diagnostic of G. waipoua sp. nov., as follows. The elongate gonostylus is peculiar for its pointed apex (↓ 1, Fig. 18A ); the ventral emargination of the gonocoxites, which is small, has a microtrichose bulge and no setae basally (↓ 2, Fig. 18C ); and the tegmen has two transverse struts (↓ 3, Fig. 18E ) as well as posterolateral processes each with 8–9 sclerotized teeth (↓ 4, Fig. 18E ).

Etymology

The specific epithet, waipoua , refers to Waipoua Forest, a sanctuary for the finest kauri forest preserved in New Zealand, which is the type locality of this new species.

Material examined

Holotype

NEW ZEALAND: ♂, North Island, Northland, Waipoua Forest , near road SH 12, 300 m a.s.l., 24 Jul.– 17 Aug. 2001, old-growth mixed kauri / podocarp forest, Malaise trap, M. and C. Jaschhof legs ( NZAC, no. CEC1412).

Other characters

BODY SIZE. 2.1 mm.

HEAD. Eye bridge 1–2 ommatidia long dorsally. Eight flagellomeres retained; neck of fourth flagellomere 1.9 times the node. Palpus almost as long as head height, 4 setae-bearing segments; apical segment conspicuously long, nearly twice as long as preceding segment.

THORAX. Pronotal setae present.

WING. Length /width ratio 3.0. Rs short, one fifth of apicR 1.

LEGS. Basitarsal spines present.

TERMINALIA. Posterior edge of ninth tergite with about 20 megatrichia medially flanked by inconspicuous microtrichose lobes ( Fig. 18B ). Gonocoxites with narrow, unsetose portion ventrobasally; ventral setae reduced to a transversal stripe in center; membranous areas below gonostyli large; ventroposterior lobes small, rounded; posteromedial protuberance unmodified except for a distinct longitudinal fold; medial bridges with short, densely microtrichose sections ( Fig. 18C ). Gonostylus more than 3.0 times longer than broad ( Fig. 18A ). Ejaculatory apodeme with elongate, membranous apex ( Fig. 18E ).

Distribution and phenology

This species, known only from the holotype, was collected in the subtropical winter of New Zealand’s Northland, in a forest predominated by kauri trees.

Notes on a possibly closely related, unnamed species

Among the Glemparon studied here is a male (NZAC, no. CEC1413) from the Westland Region in New Zealand’s South Island, which largely fits the description of G. waipoua sp. nov. given above, with the exception of the genitalic structures that resemble those shown in Figure 18D . In this specimen, the gonocoxal ventroposterior lobes are smaller; the ventral emargination has a sclerotized basal edge (no microtrichose bulge as found in G. waipoua sp. nov.); and, most importantly, the tooth-bearing processes of the tegmen protrude beyond the gonocoxal wall, which is something we have noted in no other Glemparon . We refrain from describing this specimen as a new species, because it resembles G. waipoua sp. nov. in all other respects and we cannot be absolutely sure whether the peculiarities observed are just due to preparation artifacts.

Figures

Fig. 18. Glemparon waipoua sp. nov., holotype, ♂ (NZAC, no. CEC1412) (A–C, E) and possibly closely related species (D). A. Gonostylus, lateral. B. Ninth tergite, dorsal. C. Genitalia, ventral. D. Ventroposterior edge of gonocoxites and tegminal processes, ventral. E. Apex of ejaculatory apodeme and tegmen, ventral. Scale bars = 0.05 mm. Numbered arrows indicate diagnostic characters (see Diagnosis).