Guimaraesiella lorica Gustafsson & Najer & Zou & Bush 2022, sp. nov.

Guimaraesiella lorica sp. nov.

urn:lsid:zoobank.org:act: 098F18CC-7E2C-4772-B9FD-A71392214857

Figs 22–28

Diagnosis

Guimaraesiella lorica sp. nov. is most similar to Guimaraesiella caligogularis sp. nov., with which it shares the following characters: male tergopleurites IV–V without aps, but tergopleurite VI with aps (Figs 22, 36); male abdominal segment VI with 3 ps on each side (Figs 22, 36); proximal mesosome trapezoidal, constricted distally (Figs 27, 41); female abdominal segment IV with 1 ps on each side and segment V with 2 ps on each side (Figs 23, 37).

These two species can be separated by the following characters: dorsal preantennal suture does not reach lateral margin of head in Gu. lorica sp. nov. (Fig. 24) but reaches lateral margin of head in Gu. caligogularis sp. nov. (Fig. 38); male abdominal segment V with 1 ps on each side in Gu. caligogularis sp. nov. (Fig. 36), but with 2 ps on each side in Gu. lorica sp. nov. (Fig. 22); proximal mesosome more constricted distally in Gu. lorica sp. nov. (Fig. 27) than in Gu. caligogularis sp. nov. (Fig. 41); distal mesosome more broadly rounded in Gu. caligogularis sp. nov. (Fig. 41) than in Gu. lorica sp. nov. (Fig. 27); ventral sclerite slender with thickening in proximal end in Gu. lorica sp. nov. (Fig. 27), but generally massive without such thickening in Gu. caligogularis sp. nov. (Fig. 41).

Etymology

The species name is derived from the Latin ‘ loricus ’ for ‘corselet’, referring to the distinct narrowing of the mesosome.

Material examined

Holotype (ex Hypsipetes leucocephalus nigerrimus [as H. madagascariensis nigerrimus]) TAIWAN • ♂; Liu Kuei; no date; T.C. Maa leg.; TMT 1562–1567; NHML.

Paratypes TAIWAN • 1 ♂, 1 ♀; same collection data as for holotype; UMSP • 1 ♀; Puli, Nantou Hsien; Jan. 1964; same collector and host as for preceding except TMT 42-47; PIPR • 1 ♂; same collection data as for preceding; UMSP • 1 ♂, 1 ♀; same locality, collector and host as for preceding except Nov.–Dec. 1963; TMT 572–573; UMSP.

Type host

Hypsipetes leucocephalus nigerrimus Gould, 1863 – black bulbul.

Description

Both sexes

Head pentagonal (Fig. 24), lateral margins of preantennal head straight to slightly convex, frons concave. Marginal carina moderate, narrowing slightly anteriorly, with shallowly undulating median margins. Dorsal anterior plate with shallowly concave anterior margin and slightly convex lateral margins. Ventral anterior plate roughly triangular, but with deeply concave anterior margin. Narrow dorsal preantennal suture does not reach ads in 2 examined males, and reaches ads on only one side in 2 examined females; in 2 males and 1 female suture reaches ads; suture does not reach lateral margins of head. Preantennal nodi moderate, not extended medianly. Head chaetotaxy as in Fig. 24. Coni do not reach distal margin of scapes. Temples rounded, temporal marginal carina slender, of more or less constant thickness. Thoracic and abdominal segments as in Figs 22–23. Base color pale brown yellow, darkening to pale brown on marginal carina, head nodi, gular plate, proepimera, and metepisterna, and to medium brown on lateral section of tergopleurites.

Male

Thoracic and abdominal chaetotaxy as in Fig. 22. Basal apodeme broad (Fig. 25), constricted at midlength. Proximal mesosome trapezoidal (Fig. 27). Ventral sclerite short, with thickened anterior end. Mesosomal lobes bulging slightly in anterior end, slender distally; 3 ames sensilla on each side; 2 pmes microsetae on lateral margins of mesosome. Gonopore deeply crescent shaped. Parameral heads as in Fig. 26. Parameral blades stocky, narrowing only near distal end; pst1–2 as in Fig. 26. Measurements as in Table 1.

Female

Thoracic and abdominal chaetotaxy as in Fig. 23. Subgenital plate broad (Fig. 28), with slender, somewhat diffuse, lateral submarginal extensions that reach slightly more than halfway to lateral ends of vulval margin. Vulval margin gently rounded (Fig. 28), with 3 short, slender vms and 6–7 short, thornlike vss on each side; 4–6 short, slender vos on each side of subgenital plate; distal 1 vos median to vss. Measurements as in Table 1.