Tanyscelis Hardy & Gullan 2010

Hodgson, Chris, 2020, A review of neococcid scale insects (Hemiptera: Sternorrhyncha: Coccomorpha) based on the morphology of the adult males, Zootaxa 4765 (1), pp. 1-264 : 96-97

Tanyscelis Hardy & Gullan 2010 .

Tanyscelis Hardy & Gullan 2010 , 34–35. Type species: Opisthoscelis pisiformis Froggatt. Type designation unknown. Introduction. This genus is restricted to Australia and currently contains 12 species ( Hardy & Gullan 2010). The females induce galls on leaves and stems of Eucalyptus sp. ( Myrtaceae ), each gall either globular, hemispherical, conical mammiform or thorn-like. Most species were originally placed in the genus Opisthoscelis Schrader 1863 , but adult male Tanyscelis have 9-segmented antennae whereas those of Opisthoscelis species have 10 segments. In addition, the abdomen of adult male Tanyscelis species is attenuated, becoming very narrow near apex, and they lack glandular pouches, whereas the abdomen of adult male Opisthoscelis species is not attenuated and they have a pair of glandular pouches ( Hardy & Gullan 2010). Thus, the detailed description of adult male Opisthoscelis spp. by Theron (1968), based on specimens of two unidentified species collected from Keith, South Australia, actually refers to species of Tanyscelis .

Generic diagnosis based on adult male morphology of T. verrucula (described below) ( Fig. 39 ). Body: abdomen greatly attenuated, narrowing to a very narrow style; body fairly setose, with mainly long, flagellate fs. Head: simple pores present; ocular sclerite without striations or reticulations; dorsal mid-cranial ridge well developed; preocular ridge absent; genal setae present; antennae 9 segmented; flagellar segments with long fs; capitate setae restricted to 3 on apical segment; scape with many setae. Thorax: prosternal median ridge absent; prosternal setae and antemesospiracular setae present, mainly fs; scutal setae present laterally; postmesospiracular setae abundant, mainly fs; basisternal setae present, mainly fs; metasternum with abundant fs; postmetaspiracular setae few; wings without alar setae, alar lobes and alar sensoria; hamulohalteres absent; legs extremely long and hirsute; tibia and tarsi with mainly fleshy setae; tarsi 1 segmented; claw digitules capitate; claws short and sharply pointed. Abdomen: drawn out and very elongate; long fs numerous dorsally, ventrally and pleurally; glandular pouches absent; caudal extensions absent; entire penial sheath long and narrow; all setae posteriorly on style long; aedeagus blade-like (i.e., very narrow dorsoventrally).

Figures

FIGURE 39. Tanyscelis verrucula (Froggatt). Macropterous male. (Eriococcidae, Gondwanan group). Where A=cranial apophysis and X=pores on head.