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Nematopogon schwarziellus
Sandy Long-horn (Zeller, 1839)
Adelidae: Nematopopgoninae
141 / 7.012
Photo © Neil Sherman,  Purdis Farm, Ipswich. May 2014

Similar Suffolk Species
Large Long-horn
Nematopogon swammerdamella
Buff Long-horn
Nematopogon metaxella
Wingspan: 14-17mm
Flight: May - June
Foodplant:   Various herbaceous plants.
Nat Status: Common
Verification Grade:  Adult: 3

Morley’s Final Catalogue: Bentley Woods, Dodnash, Ipswich, Butley, Blaxhall, Parham Wood, Monks Soham, Weston.

Recent Status: This species is common in Britain but rarely recorded in Suffolk. It is probably under-recorded.

Life Style: A single brooded species that comes to light and flies during May and June. The larvae feed on dead leaves from a portable case constructed from overlapping pieces of dead leaves. The case is flat, bivalve, tapering but rounded at each end. The larvae may take two years to develop. They pupate in the case.

Identification: The three species of Nematopogon in Suffolk, N. swammerdamella, N. schwarziellus and N. metaxella are similar. They can be distinguished as follows. N. swammerdamella is the largest at 18 to 22mm wing-span, N. schwarziellus is 14 to 18mm and N. metaxella is 13 to 17mm. M. metaxella has a white face and palps. They all have a have a yellow ochre crown. N. schwarziellus shows a distinct non reticulate tornal spot and a slight dark mark/line at the end of the discal cell. In N. metaxella the tornal spot is slight and the dark mark is strong. They are usually absent in N. swammerdamella. Reticulation is variable. The relative length of the antennae to the forewing length is only really of any value for identifying male N. metaxella where it is three. Note that it is two and a half for N. swammerdamella males and is sexually dimorphic in all species which makes this character difficult beyond those two males. The size, face colour and tornal spot are the primary factors. More Info

Retained Specimen / Photograph will be Required.

Recorded in 17 (29%) of 58 10k Squares.
First Recorded in 1987.
Last Recorded in 2021.

Latest 5 Records
Date#VC10k Area
09/06/2021125TG50 - Gorleston
03/06/2021+25TM35 - Snape/Tunstall
28/05/2021126TL78 - Brandon/Lakenheath
28/05/2021225TM25 - Wickham Market/Otley
24/05/2021425TM25 - Wickham Market/Otley
Further info: Nematopogon schwarziellus
 
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