Glemparon manuka, 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 : 33-35

Glemparon manuka sp. nov.

urn:lsid:zoobank.org:act:49E0AEC8-D15A-4E75-ABBE-F39B9B532D13

Figs 1A, F , 19 A–B

Diagnosis

The complex genitalic structures found in G. manuka sp. nov. make this the most unusual species we have seen of Glemparon . The tegmen and ejaculatory apodeme form a structural unit, which is also linked to the gonocoxal ventral wall; for simplicity we refer to this entire structure as the tegmen. The abundance of serrate and tooth-bearing lobes on the tegmen, which is unique, is shown in Figure 19A . The gonocoxal posteromedial protuberance is missing as a distinct structure, but we suppose it is merged into the tegmen.

Etymology

The specific epithet, manuka , refers to the Manuka Road in the Warra Long Term Ecological Research site, Tasmania, where the holotype specimen of this species was collected. Manuka ( Leptospermum scoparium J.R. Forst. & G. Forst. ), a small tree of the Myrtaceae family, is a common native of southeast Australia and New Zealand.

Material examined

Holotype

AUSTRALIA: ♂, Tasmania, Warra Long Term Ecological Research site, Manuka Road , 19 May 2004, eucalypt forest, Malaise trap, R. Bashford leg. ( AM, no. CEC1409).

Differential diagnosis

Genitalic morphology indicates that G. manuka sp. nov. is most closely related to G. rotoroa sp. nov. from New Zealand ( Fig. 15 ). The gonostyli, gonocoxites and ninth tergites of both species are broadly similar, while the tegmina are completely different.

Other characters

BODY SIZE. 2.1 mm.

HEAD. Eye bridge 0–1 ommatidium long dorsally. Nine flagellomeres retained; neck of fourth flagellomere 2.2 times longer than node ( Fig. 1F ). Palpus about as long as head height, 4 setae-bearing segments; apical segment longest of all.

THORAX. Pronotal setae present.

WING. Length /width ratio 3.2. Rs short, one twelfth of apicR 1.

LEGS. Basitarsal spines present ( Fig. 1A ).

TERMINALIA. Ninth tergite markedly narrowed posteriorly, posterior edge with about 20 dense megatrichia ( Fig. 19B ). Gonocoxites very sparsely setose ventrally; ventral emargination filled with membrane with fine microtrichia and setulae; ventroposterior lobes conspicuously large ( Fig. 19A ). Gonostylus 3.0 times longer than broad; strongly bent on apical third; outside densely setose; inside and apex with dense microtrichia and a few setulae ( Fig. 19A ). Ejaculatory apodeme shorter than in other Glemparon , as long as gonocoxites; base weakly sclerotized; apex broadened, strongly sclerotized, merged with tegmen ( Fig. 19A ).

Distribution and phenology

This species is known from a single specimen collected in autumn, in a stretch of old-growth wet eucalypt forest in lowland Tasmania.

Figures

Fig. 1. Morphology of Glemparon spp., ♂♂. A. Basitarsus of foreleg in G. manuka sp. nov., lateral. B. Basitarsus of foreleg in G. warra sp. nov., lateral. C. Palpus of G. orautahi sp. nov., lateral. D. Palpus of G. tomelilla sp. nov., lateral, holotype. E. Palpus of G. tomelilla sp. nov., lateral, paratype. F. Fourth flagellomere of G. manuka sp. nov., lateral. G. Fourth flagellomere of G. orautahi sp. nov., lateral. H. Fourth flagellomere of G. tomelilla sp. nov., lateral. Scale bars = 0.05 mm.

Fig. 19. Glemparon manuka sp. nov., holotype, ♂ (AM, no. CEC1409). A. Genitalia, ventral. B. Ninth tergite, dorsal. Scale bars = 0.05 mm.

Fig. 15. Glemparon rotoroa sp. nov., ♂♂. A, C. Holotype (NZAC, no. CEC1415). A. Genitalia, ventral. B. Ninth tergite, dorsal, paratype (NZAC, no. CEC1416). C. Apex of ejaculatory apodeme and tegmen, ventral. Scale bars = 0.05 mm. Numbered arrows indicate diagnostic characters (see Diagnosis).