Glemparon otago, 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 : 20-22

Glemparon otago sp. nov.

urn:lsid:zoobank.org:act:A10DF0E4-2C9C-45C9-B85C-79AC1296AE3F

Fig. 11

Diagnosis

The genitalia of this species ( Fig. 11 ) differ from what is typically found in Glemparon . In particular, while the gonostylus is narrowed apically, it is not laterally compressed; the gonocoxites lack membranous areas below the gonostyli; and the apex of the ejaculatory apodeme is not arrow-shaped. An absolutely distinguishing structure is the tegmen, which ends in a pair of sclerotized points (↓ 1, Fig. 11 ) and has a pair of lateral processes each consisting of about 10 tubercles (↓ 2, Fig. 11 ).

Etymology

The specific epithet, otago , is of Maori origin and refers to the Otago Region in the south of New Zealand’s South Island, where the holotype was collected.

Material examined

Holotype

NEW ZEALAND: ♂, South Island, Otago, Mount Aspiring National Park, Dart Hut , ca 1000 m a.s.l., 13–14 Feb. 1980, “in bush”, Malaise trap, J.S. Dugdale leg. ( NZAC, no. CEC1410).

Other characters

BODY SIZE. 2.3 mm.

HEAD. Eye bridge 3–4 ommatidia long dorsally. Flagellomeres 17; neck of fourth flagellomere 0.6 times the node. Palpus shorter than head height, 4 setae-bearing segments, apical segment longest of all.

THORAX. Pronotal setae absent.

WING. Length /width ratio 2.9. Rs short, one fifth of apicR 1.

LEGS. Basitarsal spines present.

TERMINALIA ( FIG. 11 ). Posterior edge of ninth tergite broadly rounded, with normal microtrichia. Gonocoxites with large unsetose portion ventrobasally; ventroposterior lobes small, rounded; ventral emargination shallow; posteromedial protuberance indistinct, apparently completely membranous (not depicted in Fig. 11 ); dorsal apodemes shorter and thicker compared with other Glemparon . Gonostylus strongly bent on apical third, with densely microtrichose protuberance dorso-subapically. Ejaculatory apodeme progressively membranous basally, with sclerotized broadening apically.

Discussion

Our reasons to classify this species in the genus Glemparon are the possession of 17 flagellomeres, i.e., more than the 14 flagellomeres usually found in Dicerurini , and the presence of five out of eight genitalic characters regarded as synapomorphous in Glemparon (see the generic diagnosis above). There is no better, alternative generic placement for G. otago sp. nov. The somewhat aberrant genitalic morphology of this species gives an idea of the diversity of structure met in Glemparon , a fact to bear in mind as other unusual, hard-to-place Dicerurini will be found in the future. Glemparon rotoiti sp. nov., which is described below, possibly lies between G. otago sp. nov. and other, more typical species of Glemparon .

Distribution and phenology

The holotype of G. otago sp. nov. was collected in summer in the high mountains of New Zealand’s Southern Alps, in a patch of native bush according to the specimen label.

Figures

Fig. 11. Genitalia of Glemparon otago sp. nov., holotype, ♂ (NZAC, no. CEC1410). Scale bar = 0.05 mm. Numbered arrows indicate diagnostic characters (see Diagnosis).